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Expandable graphite modified SMC material

A technology of expanding graphite and modification, which is applied in the field of SMC materials modified by expandable graphite, can solve the problems of poor compatibility between flame retardants and organic materials, decreased mechanical properties, and decreased material toughness, so as to improve mechanical properties and reduce Dosage, the effect of promoting carbonization

Inactive Publication Date: 2021-06-08
湖南三合汽车新材料有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

The use of this type of flame retardant to achieve the V0 flame retardant level requires the addition of a flame retardant with a ratio of 75%-65%. Adding a large amount of flame retardant will lead to a decrease in the mechanical properties of the material and a decrease in the toughness of the material. Poor compatibility, prone to interface defects

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  • Expandable graphite modified SMC material
  • Expandable graphite modified SMC material

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Embodiment Construction

[0011] The technical solution of the present invention is clearly and completely described below. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0012] The present invention uses expandable graphite to replace a part of inorganic flame retardants (aluminum hydroxide, etc.), reduces the amount of inorganic fillers and other components in the total system, and improves the flame retardancy of SMC materials through blending modification, thereby indirectly improving the use of the SMC. The mechanical strength of a product formed from a material.

[0013] At the same time, because expandable graphite has the ability to resist damage at high temperatures and has a high expansion rate, and is non-toxic and non-polluting, it can be used alone or mixed with other flame retardants to achieve the ideal flame retardant effect. ,...

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Abstract

The invention belongs to the field of modified flame-retardant materials, and particularly relates to an expandable graphite modified SMC material. The expandable graphite modified SMC material comprises resin, a flame retardant and an inorganic filler, and is characterized by further comprising expandable graphite. According to the above technical scheme, a small amount of the expansible graphite is used for replacing a part of the flame retardant and is mixed with the modified SMC material, so the consumption of the flame retardant can be reduced on the premise of meeting a requirement for flame retardant property; and thus, the mechanical property of a product is improved, the environmental protection requirements for no toxicity and no pollution can be met, and the damping effect and the electrostatic charge gathering prevention effect of a material system can also be improved.

Description

technical field [0001] The invention belongs to the field of modified flame-retardant materials, in particular to SMC materials modified by expandable graphite. Background technique [0002] The current flame retardants for SMC materials mainly include aluminum hydroxide, magnesium hydroxide, and antimony trioxide. Compared with molded products, the use of current flame retardants must meet the A0 level under the UL94-2013 standard, and the flame retardant must be The proportion of fuel is raised to more than 65% of the whole system. As people pay more and more attention to fire-resistant and flame-retardant materials, corresponding products have also put forward stricter requirements for the flame-retardant grade of raw material systems. The flame retardant mechanism of flame retardants is to release bound water during combustion, and at the same time reduce the flammability of organic materials by increasing the filling amount. The use of this type of flame retardant to ...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L27/06C08L23/06C08L25/06C08L31/04C08K13/04C08K7/24C08K3/22C08K3/26C08K3/30
CPCC08L61/06C08K2003/2227C08K2003/2224C08K2003/265C08K2003/3045C08L2201/02C08L2201/04C08L2201/08
Inventor 王稳陈傲杰张青山林静
Owner 湖南三合汽车新材料有限公司
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