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Gel Coat Resin
Gel Coat Resin

Gel Coat Resin

TIANMA Gel Coat Resin is a gem in our product line, meticulously designed to achieve superior surface effects. We are committed to providing high-quality resin solutions for various applications. Our Gel Coat Resin boasts superior surface protection, offering a robust protective layer for smooth and durable surfaces in challenging environments, whether for boat hulls, wind energy equipment, or automotive exteriors. With a wide range of colors and effects, our Gel Coat Resin series meets diverse design and aesthetic requirements. Its excellent flowability and ease of application make it an idea...
Introduction

At TIANMA, we take pride in being a premier Gel Coat Resin supplier, offering top-notch solutions for boat finishes. Our Gel Coat Resin stands out as a high-performance coating designed to elevate the aesthetics and durability of marine vessels. Let's delve into the world of "gel coat boat paint" and "gel coat resin" to understand their pivotal roles in enhancing the longevity and appearance of boats.

1. Superior Protection with Gel Coat Resin:TIANMA Gel Coat Resin serves as a robust protective layer for boats, shielding them from the harsh marine environment. As a specialized "gel coat boat paint," our resin creates a durable barrier that guards against UV radiation, water intrusion, and abrasion. This not only preserves the structural integrity of the boat but also ensures a lasting, lustrous finish.

2. Unmatched Aesthetics:Boat owners and manufacturers choose TIANMA Gel Coat Resin for its ability to deliver impeccable aesthetics. Our gel coat resin enhances the visual appeal of boats, providing a glossy and smooth surface. The "gel coat boat paint" aspect of our resin allows for customizable color options, enabling boat enthusiasts to express their individual style while maintaining a sleek and polished appearance.

3. Application Versatility:TIANMA Gel Coat Resin is a versatile solution that goes beyond conventional boat finishes. Its applications extend to a variety of marine structures, including yachts, jet skis, and watercraft. The adaptability of our "gel coat resin" ensures that it can be seamlessly applied to different surfaces, offering a consistent and high-quality finish across various marine vessels.

In conclusion, TIANMA Gel Coat Resin is your go-to choice for achieving excellence in boat finishes. Whether you're looking for superior protection, unmatched aesthetics, or versatile applications, our "gel coat boat paint" and "gel coat resin" solutions are crafted to meet and exceed your expectations. Trust TIANMA for quality, durability, and a flawless finish that stands the test of time on the open waters.

Parameter

CodeViscosityGel TimeFlexible StrengthFlexible ModulusTensile StrengthTensile ModulusElongation At BreakImpact StrengthBarcol HardnessHDTDescription
Product(25°C)
mpa.s
(25°C ) minMPaGPaMPaGPa%KJ/ m2°C

General Gelcoat

TM31

1600-2600

/3500-5500

8-201103.2683.22.6124381

Isophthalic acid GELCOAT Resin. It has good construction performance, high hardness, heat resistance, wear resistance, impact resistance, etc., and is suitable for high performance products,such as cooling tower, yacht , amusement park Playground facilities. It has been approved by CCS and DNV ,Hand lay-up or spray up process.

TM333500-550010-201203.2683.23.0133860Isophthalic acid GELCOAT Resin.It has good comprehensive performance such as impact resistance, water resistance, weather resistance, and construction performance, and is suitable for manufacturing general products with high requirements. It is certified by China Shipyard Inspection.It has been approved by CCS and DNV ,Hand lay-up or spray up process.
TM34

1600-2600

/3500-5500

8-201003.0683.02.4104670

Orthophthalic type general purpose GELCOAT resin

It has good construction performance, high hardness, heat resistance, wear resistance, impact resistance, etc., and is suitable for general purpose products. Hand lay-up or spray up process.

TM36

1600-2600

/3500-5500

8-201103.0683.12.6124275M-Benzene Neopentyl glycol gel coat resin, with excellent physical properties, construction and water resistance, weather resistance, chemical resistance, is suitable for manufacturing outdoor FRP products with high requirements. Hand brush or spray molding can be used.
TM52

1600-2600

/3500-5500

8-201053.0653.02.4104368The o-benzene Neopentyl glycol gel coat resin has good workability, weather resistance, water resistance and other characteristics, and is suitable for manufacturing outdoor general products. Hand brush or spray molding can be used.
TM68

1600-2600

/3500-5500

8-201253.2683.22.6104590M-Benzene Neopentyl glycol gel coat resin, with excellent physical properties, construction and water resistance, weather resistance, chemical resistance, is suitable for manufacturing outdoor FRP products with high requirements. Hand brush or spray molding can be used.
TMV21

1600-2600

/3500-5500

8-201103.0703.02.01243105Vinyl based gel coating resin has excellent physical properties, construction and water resistance, chemical resistance, and good corrosion resistance. Hand brush or spray molding can be used.
TM78

1600-2600

/3500-5500

5-201103.1683.22.6124390M-Benzene Neopentyl glycol gel coat resin, with excellent comprehensive performance, outstanding water resistance, good gloss retention, can be used for products with high surface requirements. Hand brush or spray molding can be used.

Sanitary Gelcoat

TM72

1600-2600

/3500-5500

8-161303.0703.02.01047105Isobenzene Neopentyl glycol gel coat resin is characterized by good gloss, transparency, high hardness, wear resistance, and especially excellent water resistance. It is suitable for making artificial marble, artificial agate, sanitary ware and other products with high water resistance requirements.

Fire-retardant Gelcoat

TM48

1600-2600

/3500-5500

8-301003.2683.22.3104565Isobenzene type flame retardant gel coat resin has excellent flame retardant properties (high oxygen index, low smoke density), physical properties, construction and water resistance, and is suitable for manufacturing products with flame retardant requirements such as train components and lifeboats. Hand brush or spray molding can be used.

Plate Gelcoat

TMP321-H3000-50008-201103.2683.23153860The TM P321 series flat gel coat is an unsaturated polyester gel coat specially designed for manufacturing large flat products or components such as composite material carriage boards and large countertops. It has good mechanical properties (high bending strength, high impact strength, and high elongation), good construction performance (good leveling, no glue flow, wide process adaptability), high glossiness, good weather resistance, good wear resistance, and good flexibility. Choose different varieties and specifications according to different construction processes.
TMP321-C500-20008-201103.2683.25153860
TMP321-S1600-20008-201103.2683.25153860

Sanding Gelcoat

TMS301

2000-2500

/4000-4500

8-151203.2683.22.6124381TMS301/S201 is a special polishing gel coat resin (TMS301 is m-benzene Neopentyl glycol type, TMS201 is m-benzene type), which has good mechanical properties and construction performance. The gel coat layer has good bonding performance with the outer layer, and is easy to polish and level after forming and demolding. It is very suitable for manufacturing products that require painting on the surface of the gel coat, such as car bodies and accessories, racing boats, and other products. Hand brushing or spray molding can be used.
TMS201

2000-2500

/4000-4500

8-151153.2683.22.6124378

Mould Gelcoat

TM822000-500010-301103.5623.03.0124590Vinyl ester resin type high-performance mold gel coat has the advantages of high hardness, high gloss, strong impact resistance, excellent heat resistance, good wear resistance, good toughness and so on. It is specially used to make FRP molds with high requirements, and can also be used for some FRP products with high performance requirements. Hand brush or spray molding can be used, and it is recommended to use a hand brush.
TM86

1600-2600

/3500-5500

10-301503.6833.55.01545110

Gelcoat

Benzene based gel coating resin has excellent physical properties, construction performance, water resistance, weather resistance, and heat resistance, especially suitable for manufacturing products with high comprehensive performance requirements such as cooling towers, yachts, and amusement facilities. It has been certified by China Ship Inspection and DNV Ship Inspection. Hand brush or spray can be used

Tianma Brand Color Paste

Brief IntroductionLevelQuantityMain Component
AppearanceThicknessColor

Color paste is made by distribution and miling in the special media from color pigment and assistant solvent it can be used for coloring frpproducts. during usace. to mix the color paste with resin based on a certain ratio evenly. ater formation the final products with the reouiredcolor will be got, detailed colors please find the color card or according to the customer's request.

Tianma brand color paste is with the characteristics such as vivid color , heat resistance. stable aualitv . strong coloring performance etc.Theunction of the pigment can not be fuly carried out unti the color paste has good coloring performance, tianma brand color paste can reach thesame color and color strenath as other brand by using the minimum auantity and meanwhie with good coverina performance.

Paste like substance with

even color

≤30 Micron

Even color after

sample solidifying

In resin, a portion of 3%-5% isrecommende to add. Of course.the final ruantity can beincreased or decreasedaccording to diffent technologyand request.

Pigment powder

assistant

special media



Common Problems And SolutionsⅠ

1 Gum coat layer wrinkling - Gum coat formation in contact with the mold
ReasonSolution
1)The adhesive layer is too thinKeep the thickness of the gel coat layer between 0.4 and 0.6mm
2)If the adhesive layer is not fully cured, make a backing layerWait until the fingers are not sticky before proceeding to the next step
3)Insufficient dosage of curing agentIncrease the dosage of curing agent
4)Operating environment humidity too highMaintain operating environment humidity of 40-60RH
5)Low operating environment temperatureIncrease operating temperature
2 Cracks appear on the surface of the gel coat layer
ReasonSolution
1)Insufficient flexibility of gel coatChoose flexible gel coat
2)The gel coat layer is too thickKeep the thickness of the gel coat layer between 0.4 and 0.6mm
3)Excessive amount of curing agentAdd curing agent according to the manufacturer's instructions
4)Uneven thickness of gel coat layerEnsure uniform thickness of the gel coat layer
5)Gel coat diluted with solventDo not add solvents, adjust the viscosity according to the manufacturer's instructions
6)Excessive force during demoldingDo not use heavy objects to strike when removing the film
7)Undercuring of structural layerAfter the structural layer is fully cured, demolding can be carried out
8)Insufficient reinforcement of structural layersNecessary parts of reinforced structural layer
9)Cracks on the surface of the moldClean or replace the mold
3 Pinholes - tiny air holes formed on the surface of the gel coat
ReasonSolution
1)The gel coat layer is too thickKeep the thickness of the gel coat layer between 0.4 and 0.6mm
2)Spray flow rate too highAdjusting spray flow rate
3)Poor atomization of gel coatAdjust the spraying pressure to ensure good atomization
4)Gel coat sprayed too thick at onceGenerally, it is necessary to evenly spray 3-4 times to achieve the required thickness
5)Gel coat gel is too fast to defoamingAdjusting the dosage of curing agent
6)Improper operating environment temperature and humidityAdjusting the operating environment temperature and humidity
7)Improper selection of release agentDo not use silicone release agents, use designated release agents
8)Contaminants presentClean the mold and related spraying equipment and pipelines
9)Improper distance between the spray gun nozzle and the moldKeep the spray gun nozzle 45-75cm away from the mold
10)Poor quality of accelerator and curing agentPromoter using styrene as solvent and curing agent with low water content
4 Fish Eye - Small pores formed on the surface of the gel coat (usually circular in shape)
ReasonSolution
1)Spraying equipment and pipelines are not cleanCheck relevant equipment and pipelines
2)Improper selection of release agentDo not use silicone release agents, use designated release agents
3)Wax or dirt on the moldClean the mold again
4)The adhesive layer is too thinKeep the thickness of the gel coat layer between 0.4 and 0.6mm
5)Gel coat viscosity and thixotropic index are too lowCheck the indicators of the gel coat and do not add solvents
5 Demolding - the gel layer detaches from the mold in advance
ReasonSolution
1)Insufficient toughness of gel coatChoose resilient gel coat
2)The gel coat layer is too thick and unevenEnsure that the adhesive layer is of the recommended thickness and uniform
3)Large shrinkage of gel coatDo not dilute with solvents
4)Improper selection of release agentDo not use silicone release agents, use designated release agents
5)Gel coat contaminationEnsure cleanliness of equipment and pipelines
6)Inhibition of styrene leads to uneven curingStrengthen ventilation to avoid styrene on the mold
7)Excessive curing agent and excessive heat release of the gel coatAdjusting the dosage of curing agent
8)The wax on the mold was not treated thoroughlyThoroughly handle the mold
9)The gel time is too short or the ambient temperature is too highAdjust appropriately
6 Hanging - Gel coat flows in a vertical plane
ReasonSolution
1)The gel coat layer is too thickCheck the thickness of the adhesive layer and adjust it
2)Gel coat viscosity and thixotropic index are too lowCheck the indicators of the gel coat and do not add solvents
3)Improper selection of release agentDo not use silicone release agents, use designated release agents
4)The spray gun pressure is too high to impact the adhesive layerAdjusting the pressure of the spray gun
5)The spray gun nozzle is too close to the moldKeep the spray gun nozzle 45-75cm away from the mold
6)Gel coat construction too fastUniformly construct three times to achieve thickness
7)Incorrect nozzle diameterIf the caliber is too small, it can easily cause significant shear force on the gel coat, reducing its viscosity. Therefore, the caliber should be increased
7 Poor gloss - on the surface of the product
ReasonSolution
1)Insufficient curing of gel coatAdjusting the dosage of curing agent
2)Operating environment with high humidity and low temperatureAdjusting the operating environment temperature and humidity
3)Gel coat and resin contaminatedCheck relevant equipment and pipelines
4)Poor wettability of glass fiberChoose glass fiber with good wettability
5)Low solid content of gel coatContact suppliers
6)DemoldingRefer to 'demolding'
7)When demolding, the adhesive layer has not yet fully solidifiedEnsure sufficient curing of the gel coat during demolding
8)Poor surface of the moldClean the mold again
8 Mucosa - adhesive coating adheres to the mold and separates from the structural layer
ReasonSolution
1)Uneven waxingCarefully and evenly waxing
2)The wax model used is incorrectUsing supplier recommended models
3)Mold contaminatedClean the mold and repax it
4)The mold has been left for too long after wax removalAfter removing wax, glue coat should be applied in a timely manner
5)Excessive curing of gel coatThe gel coat should be made into a structural layer within 8 hours
6)The glass fiber in contact with the gel coat is not soakedWhen making structural layers, the resin should be fully immersed in the reinforcing material
7)Glass fiber contaminatedCheck fiberglass
8)Gel coat containing waxCorrect selection of gel coat model
9 Ripples - on the surface of the gel coat
ReasonSolution
1)The adhesive layer is too thinKeep the thickness of the gel coat layer between 0.4 and 0.6mm
2)Make a structural layer before the adhesive layer has solidifiedWait for the adhesive layer to solidify before proceeding to the next step of operation
3)Wet fiberglassGlass fiber should be stored dry
4)Improper use of reinforcing materialsThe first layer of the structural layer should be coated with surface felt.
5)Start demolding before fully curingExtend curing time
6)The heat release from the structural layer is too concentratedLayered construction or use of low heat release structural resin
7)Uneven dispersion of curing agentEnsure that the gel coat and curing agent are thoroughly mixed and atomized
10 Uneven color - product surface
ReasonSolution
1)Gel coat contaminatedCheck brushes, rollers, spray guns, and other equipment and clean them
2)Gel coat flowingRefer to the content of "hanging"
3)Uneven dispersion of curing agentCalibrate injection or mixing equipment
4)Excessive curing doseAdjusting the dosage of curing agent
5)Insufficient or incompatible color pasteConsultation with suppliers
6)Gel coat is too thick or uneven in thicknessConstruct at the recommended thickness and as evenly as possible
7)Separation of gel coat and color pastePlease refer to 'Phase Separation'
8)Poor quality of color paste productionUsing high-quality color paste
9)Poor atomization of gel coatAdjusting atomization pressure
11 Deformation - Gel Coat Layer
ReasonSolution
1)Demolding too earlyThe product should have sufficient curing time
2)The resin selection for the reinforcement layer is incorrectResins with low heat release and shrinkage should be used
3)Reinforcement layer resin curing too fastAdjusting the resin curing speed of the reinforcement layer
4)Local overheating of the strength layerControl the heating uniformity and thickness of the strength layer, as well as the ratio of resin to glass fiber
5)Improper use of reinforcing materialsThe first layer of the structural layer is applied with surface felt
6)Improper mold designMold design should pay attention to stress concentration
7)The adhesive layer is too thinKeep the thickness of the gel coat layer between 0.4 and 0.6mm
12 Blistering - Gel Coat Layer
ReasonSolution
1)Improper use of curing agentCheck the dosage of curing agent and select high-quality curing agent with low water content
2)Improper selection of acceleratorChoose styrene as a high-quality promoter for the solvent.
3)Uneven mixing of curing agentEnsure that the curing agent is evenly mixed with the gel coat
4)There is a closed gas between the gel coat layer and the strength layerWhen making structural layers, all bubbles should be expelled
5)Wet fiberglassPreservation of glass fibers under dry conditions
6)Damping of fillers in the strength layerWhen using fillers, they should be kept dry
7)Gel coat and resin contaminatedInspect pipelines and equipment
8)Poor wettability of glass fiberRe select fiberglass
9)Gel coat and resin do not meet the environmental requirements for useRe select materials
10)Undercuring of gel coat or structural layerCheck the curing system and operation status
13 Orange Peel - Back of Gel Coat Layer
ReasonSolution
1)The viscosity of hand glue coat is too lowAdjusting viscosity
2)The spray gun is too close to the mold or the spray angle is incorrectAdjust the angle and distance from the mold (45-75cm)
3)Poor atomizationAdjust the atomization pressure or replace the nozzle
4)The adhesive layer is too thinKeep the thickness of the gel coat layer between 0.4 and 0.6mm
14 Poor leveling
ReasonSolution
1)Gel coat viscosity and thixotropy are too highAdjusting the viscosity and thixotropy of gel coat
2)The adhesive layer is too thinKeep the thickness of the gel coat layer between 0.4 and 0.6mm
3)The flow rate of gel coat is too highAdjusting the flow rate of gel coat
4)The spray gun is too close to the moldMaintain spray distance between 45-75cm
5)Low temperature of gel coatKeep the temperature of the gel coat at 20-30 ℃
15 Phase separation - separation of pigments and resins (usually on an inclined plane)
ReasonSolution
1)Gel coat or compressed air containing waterThe construction environment should be dehumidified to ensure the dryness of the mold surface and compressed air
2)Curing agent mixing is not localCheck the spraying equipment
3)The curing agent does not match the gel coat (incompatible)Replace the curing agent
4)Curing time too longAdjusting the curing time
5)The gel coat layer is too thickKeep the thickness of the gel coat layer between 0.4 and 0.6mm
6)SaggingRefer to the content of "hanging"
7)Gel coat viscosity and thixotropy are too lowCheck the viscosity of the gel coat




Application

In order to ensure a satisfactory FRP product and obtain a satisfactory appearance, the mold needs to be fully prepared in advance and the operation of the gel coat needs to be correct. When using colored gel coats, the application process is as follows:

1. Choose the appropriate color gel coat model based on product needs and application environment.

2. Prepare the mold and thoroughly treat the surface of the mold.

3. Mix each barrel of gel coat thoroughly before use, but at a slow pace to avoid mixing with bubbles.

4. Before starting the homework, the temperature of the gel coat and mold should be maintained at 16 ℃ -30 ℃, and the ideal mold temperature should be 2 ℃ -3 ℃ higher than the gel coat temperature. In this way, after curing, a more glossy surface of the gel coat is obtained.

5. The relative humidity in the workshop should be lower than 80%, and high humidity will increase the required curing temperature. In addition, it is necessary to prevent water from accumulating on the surface of the mold.

6. The surface of the mold needs to be thoroughly waxed. Do not use release wax containing silicone. The water-soluble demolding wax must wait for its moisture to evaporate before applying the gel coat.

7. When using gel coats, do not dilute with solvents such as acetone. If a lower viscosity is required during use, only a small amount of styrene (<2%) can be added.

8. The curing agent used for gel coat is methyl ethyl ketone peroxide (generally 1-3%) or liquid Cyclohexanone peroxide (generally 2-4%). If the amount of curing agent is too high or too low, the curing may result in a decrease in the water resistance and weather resistance of the gel coat.

9. When spraying, in order to achieve the appropriate thickness, it should be sprayed 2-3 times, which is also to achieve good defoaming effect. Hand paste needs to be applied twice. After the first layer solidifies, the next layer is applied, with a total thickness of 0.4-0.6mm. During hand paste, it is prohibited to directly pour the gel coat onto the mold for brushing to avoid leaving shadows.

10. When spraying gel coat, choose the appropriate nozzle (2.5-5mm), spraying pressure (7-9bar), spraying distance (45-75cm), and vertical direction for the Kolas spray gun.

11. Obtain a smooth gel coating layer with a spray thickness of 0.4-0.6 millimeters (equivalent to 600-800 grams of gel coating per square meter), which is too thin and causes undercooling; Too thick, prone to sagging, cracking, and pinholes. Thickness measurement can be done using a thickness gauge.

12. Ensure good ventilation during construction, as styrene monomer acts as a polymerization inhibitor due to its high molecular weight, which can settle in the concave area of the mold.

13. After the gel coat has fully solidified (the gel coat layer only sticks to the hand with fingers and does not adhere to the hand), proceed to the next step of operation.



Issues to be paid attention to in the application of gel coat and colored gel coat

1. When storing gel coats, direct sunlight should be avoided, and the storage temperature should be ≤ 25 ℃. They should be stored separately from MEKP.

2. The pre-treatment mold and gel coat construction area should avoid the generation of dust. The gel coat should be poured into a clean bucket.

3. When stirring the curing agent or color paste, use low speed mixing. Do not mix too much air.

4. Do not use high shear mixing equipment. Otherwise, it will lead to a decrease in thixotropy index, separation/aggregation of color paste, bleeding, and bubbles.

5. It is prohibited to directly pour the gel coat onto the mold and apply it directly, as this can easily cause shadows.

6. The gel time should not be adjusted too fast, which is not conducive to the escape of bubbles.

7. The amount of curing agent added should be appropriately calibrated by measuring the gelation time.

8. Do not use mold release wax containing silicone, as they can produce fish eyes.

9. When using gel coats, accelerators can be added appropriately according to process requirements and weather changes, but avoid adding a large amount of accelerators to avoid changing the color of the gel coat.

10. When using accelerators, styrene should be used as a solvent to avoid the excessive presence of other solvents that do not react with the system, resulting in a decrease in the pinholes, water resistance, and strength of the gel coat curing layer.

11. As the outer surface of fiberglass products, gel coats provide protection and beautification. Therefore, high-quality curing agents with low water content and guaranteed quality should be used during use to avoid the decrease in needle holes, water resistance, weather resistance, and strength of the gel coat curing layer caused by poor quality of the curing agent.


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