Preparation method of carbon fiber liquid molded carbon fiber composite material with no halogen, low toxicity and high flame resistance
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A technology of liquid molding and composite materials, which is applied in the field of preparation of halogen-free high flame-retardant resin-based carbon fiber composite materials, can solve the problems of flammability, large quantities, harmful gases, etc., and achieve the effect of excellent mechanical properties
Inactive Publication Date: 2017-07-25
HENGSHEN
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Problems solved by technology
As a high-molecular organic material, the high-performance resin matrix has a fatal shortcoming that it is flammable and produces a large amount of harmful gases and smoke when burned. The resulting fire hazard has become a global concern
Method used
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Embodiment 1
[0022] Option A
[0023] Add hexaphenoxycyclotriphosphazene into bisphenol F epoxy and novolac epoxy mixture and stir at 90±5°C until completely dissolved. After cooling to room temperature, add bisphenol A bis(diphenyl phosphate), m-benzene Stir the diphenol bis(diphenyl phosphate) and o-cresyl glycidyl ether until they are evenly mixed, and finally add the curing agent isophorone diamine, and mix evenly to obtain the resin system a.
[0024] The amount of each component in the resin system a:
[0025]
[0026] The composite material sheet was prepared by vacuum introduction process.
[0027] The carbon fiber twill fabric with an area density of 200gsm is selected as the reinforcement material; the carbon fiber fabric is cut and laid according to the requirements, and the auxiliary materials are laid and then vacuum bagged, vacuumed and the vacuum retention rate of the vacuum bag is tested. When the vacuum degree meets the requirements, carry out Glue injection.
[0028...
Embodiment 2
[0042] Plan C
[0043] Weigh bisphenol F epoxy and o-cresyl glycidyl ether, stir until mixed evenly, add curing agent isophorone diamine, mix evenly, and obtain resin system c.
[0044] The amount of each component in the resin system c:
[0045]
[0046] Composite sheets were prepared by RTM molding process.
[0047] The reinforcing material is carbon fiber twill fabric with an area density of 200gsm; the fabric is shaped by epoxy setting agent (the amount of epoxy setting agent per square meter is 50g), and the shaped carbon fiber fabric is cut and laid according to the requirements to make a prefabricated body, and According to the requirements of RTM process, the plastic injection plate is made.
[0048] After injection, heat up and solidify. The curing system is 50°C for 2h+120°C for 3h, and the heating rate is 1-2°C / min.
[0049] Plan D
[0050] Preparation of flame-retardant setting powder: Add ammonium molybdate, ammonium polyphosphate, zinc borate, and epoxy s...
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Abstract
The invention discloses a preparation method of a carbon fiber liquid molded carbon fiber composite material with no halogen, low toxicity and high flame resistance. The method comprises the following steps: 1) preparation of a flame retardant setting powder; 2) uniform spreading of the flame retardant setting powder on the surface of a carbon fiber fabric; 3) high temperature setting; and 4) fabric layer setting, and liquid molding process manufacturing. The preparation method of the carbon fiber liquid molded carbon fiber composite material with no halogen, low toxicity and high flame resistance is characterized in that a powdery high-efficiency flame retardant is mixed with a setting agent to form the flame retardant setting powder, and the flame retardant setting powder is used as a flame retardant setting agent to set the carbon fiber fabric in order to solve the flame retardation problem and reach the fabric setting effect. The carbon fiber composite material prepared from flame-retardant or non-flame-retardant resin through a liquid molding technology has a high flame retardation level, and can reach the highest requirements of Germany flame retardant standards DIN5510-2:2009, that is, the combustion property reaches S4, the smoke density reaches SR2, the droplet characteristic reaches ST2, and the smoke toxicity FED is not more than 1.
Description
technical field [0001] The invention relates to a preparation method of a halogen-free high flame-retardant resin-based carbon fiber composite material, and in particular to a preparation method of a halogen-free high flame-retardant resin-based carbon fiber composite material suitable for a liquid molding process. Background technique [0002] Composite materials are new materials with excellent comprehensive properties composed of matrix materials (polymer materials, metals, ceramics) and reinforcements (fibers, whiskers, particles), and are one of the fastest-growing new materials in this century. Among them, carbon fiber composite materials have the unique advantages of high specific strength and specific stiffness, strong designability, good fatigue fracture resistance, corrosion resistance, good structural dimensional stability, and easy large-area overall forming. , automotive industry and other fields have been widely used. [0003] Composite material liquid molding...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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