Damp-heat-resistant PC/ABS flame-retardant composite material and preparation method thereof

A flame retardant composite material and technology of heat and humidity resistance, applied in the field of polymer materials, can solve the problems of easy hydrolysis, reduced flame retardant effect, ester bond hydrolysis aging and yellowing, etc. Moisture and heat resistance, dense and stable carbon layer

Active Publication Date: 2020-12-29
横店集团得邦工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PC / ABS is a flammable material with potential safety hazards, so it is very important to modify PC / ABS flame retardant
[0003] Bisphenol A-(bisdiphenyl phosphate) is an effective flame retardant, but it is easy to precipitate from the matrix in a hot and humid environment, thereby reducing the flame retardant effect
Secondly, because the carbonate group of PC in the PC / ABS composite material is a polar water-absorbing group, it is prone to hydrolysis, and the excess bisphenol A contained in PC and the by-product Cl in high-temperature and high-humidity environment - The reaction generates HCl, which leads to hydrolysis of ester bonds and yellowing due to aging, which is not conducive to the long-term application and development of PC / ABS in the field of automotive equipment and electronic products. Therefore, it is also extremely important to improve the moisture and heat resistance of PC / ABS materials and flame retardants.
[0004] Chinese invention patents CN109280355A and CN106317821A both disclose a high hydrolysis-resistant flame-retardant PC / ABS composite material. performance, but there are still problems with the addition of a large amount of flame retardant, a large amount of hydrolysis-resistant stabilizer, and not resistance to heat and humidity

Method used

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  • Damp-heat-resistant PC/ABS flame-retardant composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Obtain the heat and humidity resistant PC / ABS flame retardant composite material as follows:

[0027] (1) Prepare materials according to the following components and parts by weight: 60 parts of PC resin, 40 parts of ABS resin, 1 part of silane coupling agent KH-550, 5 parts of flame retardant BDP, auxiliary flame retardant KH-550-melamine benzene sulfonate 1 part salt, 0.4 parts of calcium silicate and zinc silicate as anti-moisture and heat stabilizer, the mass ratio of calcium silicate and zinc silicate is 1:1, and the sulfonation reaction temperature of auxiliary flame retardant melamine and benzenesulfonate 100°C (the molar ratio of melamine and benzenesulfonic acid is 1:1), the reaction temperature of melamine benzene sulfonate and coupling agent is 75°C (the molar ratio of KH-550 and melamine benzene sulfonate is 1:1);

[0028] (2) Dry PC resin, ABS resin, silane coupling agent, flame retardant, auxiliary flame retardant and moisture-heat resistant stabilizer in...

Embodiment 2

[0031] Obtain the heat and humidity resistant PC / ABS flame retardant composite material as follows:

[0032](1) Prepare materials according to the following components and parts by weight: 50 parts of PC resin, 50 parts of ABS resin, 2 parts of silane coupling agent KH-550, 2 parts of flame retardant BDP, auxiliary flame retardant KH-550-melamine benzene sulfonate Salt 3 parts, humidity and heat resistant stabilizer calcium silicate and zinc silicate 0.5 parts, the mass ratio of calcium silicate and zinc silicate is 2:1, the temperature of the sulfonation reaction of auxiliary flame retardant melamine and benzenesulfonate is 110°C (the molar ratio of melamine and benzenesulfonic acid is 1:2), the reaction temperature of melamine benzene sulfonate and coupling agent is 80°C (the molar ratio of KH-550 and melamine benzene sulfonate is 2:1).

[0033] (2) Dry PC resin, ABS resin, silane coupling agent, flame retardant, auxiliary flame retardant and moisture-heat resistant stabili...

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Abstract

The invention belongs to the technical field of high polymer materials, and discloses a damp-heat-resistant PC/ABS flame-retardant composite material and a preparation method thereof. The damp-heat-resistant PC/ABS flame-retardant composite material comprises the following components in parts by weight: PC resin, ABS resin, a silane coupling agent, a phosphorus-based flame retardant, an auxiliaryflame retardant and a damp-heat-resistant stabilizer, the phosphorus-based flame retardant is bisphenol A-bis(diphenyl phosphate), and the auxiliary flame retardant is a sulfur-nitrogen-silicon flameretardant. According to the invention, a P-S-N-Si-based efficient composite flame retardant is adopted, commercial BDP is selected as a phosphorus-based flame retardant, but BDP is not resistant to damp and heat, and a large amount of BDP can reduce the mechanical properties of PC/ABS and the like, so S, N and Si flame retardant elements are additionally introduced to improve the flame retardant efficiency of the flame retardant; and by adding hydrolysis-resistant KH-550-melamine benzene sulfonate as an S-N-Si flame retardant, the flame retardant effect is improved, the addition amount of thecomposite flame retardant is reduced, the cost can be reduced, and the possibility of migration of the flame retardant can also be reduced.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a heat-and-humidity resistant PC / ABS flame-retardant composite material and a preparation method thereof. Background technique [0002] PC / ABS material is a thermoplastic blended from polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS). PC has excellent dimensional stability, mechanical properties and electrical properties, ABS has good impact resistance and processing properties, and PC / ABS combines the advantages of both, and is widely used in the fields of automotive interior parts, communication equipment, and electronic products. However, PC / ABS is a flammable material with potential safety hazards, so it is very important to modify PC / ABS flame retardant. [0003] Bisphenol A-(bisdiphenyl phosphate) is an effective flame retardant, but it is easy to precipitate from the matrix in a hot and humid environment, thereby reducing the flame retardant effect. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08K13/02C08K5/544C08K5/523C08K5/3492C08K3/34
CPCC08L69/00C08L55/02C08K2201/014C08L2201/02C08L2201/08C08K13/02C08K5/544C08K5/523C08K5/34928C08K3/34
Inventor 蒋红藤吴飞洋赵志航金镇江卢勇
Owner 横店集团得邦工程塑料有限公司
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