How to choose the material of FRP and the proportion of the material?

FRP materials are generally unsaturated polyester resin, fiberglass cloth or felt, curing agent, accelerator. The curing agent is commonly used methyl ethyl ketone peroxide, the accelerator is the styrene solution of cobalt liquor commonly used E4 or E5, the addition of the curing agent (methyl ethyl ketone peroxide) in the resin is 2%, and the addition of the accelerator is, the variable is adjusted according to the temperature, production progress, etc. Generally, the accelerator is added in advance and stirred evenly, and only the reinforcing agent is needed when used.

These two materials should not be put together, especially methyl ethyl ketone peroxide should be placed in a cool and ventilated place, and should not be impacted, so as not to cause **.

If epoxy resin is used to make FRP, the curing agent is ammonia curing agent, and the commonly used is diethylene triammonia, which is more toxic, and pay attention to bringing back the mask during operation, and the dosage is generally 8%-15%. Because the curing mechanism is different from that of unsaturated polyester, no accelerator is required.

As for what kind of resin material to choose, it depends on the specific product you make, what media requirements you have, etc. There are several kinds of unsaturated polyester, such as vinyl, but the curing principle is the same as above.

FRP material:

Glass fiber and its products (glass cloth, tape, felt, yarn, etc.) are used as reinforcing materials;

A composite material with synthetic resin as the matrix material.

The ratio of materials is the trade secret of each manufacturer and will not be made public.

Glass fiber reinforced plastic (FRP), also known as GFRP, is a fiber-reinforced plastic, which generally refers to a matrix of glass fiber reinforced unsaturated polyester, epoxy resin and phenolic resin. Reinforced plastics with glass fiber or its products as reinforcing materials are called glass fiber reinforced plastics, or glass fiber reinforced plastics, which are distinguished from tempered glass. Due to the different types of resins used, it is known as polyester FRP, epoxy FRP and phenolic FRP.

Light and hard, non-conductive, stable performance, high mechanical strength, less utilization, corrosion resistance. It can be used instead of steel to make machine parts and shells of automobiles and ships.

Hello, dear, the main material composition of FRP is as follows: resin, fiber products, curing agent, accelerator. Proportions:

Curing agent 1%-2%, accelerator 1%-3% (do experiments to determine the proportion by yourself, there are many influencing factors), can be calculated by quality, thank you for your consultation, I hope I can help you, I wish you a happy life and smooth work!

Raw materials: resins, fiber products, curing agents, accelerators.

Ratio: curing agent 1%-2%, accelerator 1%-3%.

Mechanism: Ratio - resin 30%, fiber 70%, individual parts need to be strengthened.

Handmade: Ratio - resin 55-65%, fiber 45-35%, resin content is too large to affect the toughness of the product.

FRP mechanical property parameters.

1. Containers. 1. Atmospheric pressure small and medium-sized containers (DN<4000).

Hoopic tensile strength 210MPa

Axial tensile strength 130MPa

The circumferential modulus of elasticity is 17gpa

Axial modulus of elasticity 10gpa

2. Atmospheric pressure large container (DN>4000).

Hoop tensile strength 260MPa

Axial tensile strength 90MPa

3. Large pressure storage tank.

Hoop tensile strength 300MPa

Axial tensile strength 150MPa

Hoopic modulus of elasticity 25gpa

Axial modulus of elasticity.

2. Pipelines. Hoop tensile strength 300MPa

Axial tensile strength 150MPa

Axial bending strength 140MPa

Shear strength. Surface shear strength 50MPa

Vertical shear strength 60MPa

Hoopic tensile modulus 25gpa

Axial tensile modulus GPA

Shear modulus 7gpa

Flexural modulus. 3. Pipe fittings.

Tensile strength 140MPa

Flexural strength 135MPa

Compressive strength 130MPa

Tensile modulus. Flexural modulus.

Fourth, FRP physical and other performance parameters.

Barcol hardness 40

Poisson coefficient. Coefficient of linear expansion 20 10-6

Thermal conductivity. Extension of the break.

Oxygen index 30%.

Volume resistivity.

Surface resistivity 25*1011

Inner surface roughness.

Food grade residue unit content 200ppm

PVC-FRP interlaminar shear strength 7MPa

Please write down what you need, thank you!