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Polycarbonate composite material with low heat release and low smoke

A technology of polycarbonate and composite materials, which is used in the field of flame-retardant materials for vehicles and low heat release, and can solve the mechanical properties of flame-retardant materials (impact resistance/scratch resistance, machinability (adverse effects of solution fluidity, There is no disclosure of the effect data of flame retardancy and mechanical properties of PC composite materials, deterioration of mechanical or physical properties, etc., to achieve the effect of low price, good light transmittance, excellent flame retardancy and mechanical properties

Active Publication Date: 2019-04-16
宁波力达得为高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the modified component includes polyetherimide (PEI). After adding PEI, the maximum average heat release rate (MAHRE) and smoke density (Ds-4) of the flame retardant material have been significantly improved, but the mechanical properties of the flame retardant material Performance (impact / scratch / ductility) and processability (melt flow) are adversely affected
Moreover, after using PEI, the color of the material is yellowish and the price is expensive, so it is not suitable for surface decoration
[0004] CN105348763A discloses a preparation method of an environmentally friendly heat-resistant and flame-retardant polycarbonate composite material, but the embodiment part only provides the preparation method, and does not disclose any effect data on the flame-retardant performance and mechanical properties of the PC composite material
The disadvantage of this modification method is that pearl, talc and mica filled polycarbonates or blends may degrade during processing, resulting in deterioration of mechanical or physical properties

Method used

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  • Polycarbonate composite material with low heat release and low smoke
  • Polycarbonate composite material with low heat release and low smoke
  • Polycarbonate composite material with low heat release and low smoke

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056] Preparation of component a polycarbonate:

[0057] The polycarbonate of the present invention is prepared by the melt polycondensation method from the monomer of bisphenol A and formula (1) structure and diphenyl carbonate,

[0058]

[0059] where R 1 , R 2 selected from H, hydroxyl, C1-C6 alkyl, C1-C6 alkoxy, C6-C20 aryl, wherein R 1 and R 2 At least one C6-C20 aryl group; R 3 Selected from hydroxyl, C1-C6 alkyl, C1-C6 alkoxy, C6-C20 aryl, examples of the C6-C20 aryl include phenyl, naphthyl, biphenyl, the C6- C20 aryl is optionally substituted by 1-3 C1-C6 alkyl, C1-C6 alkoxy.

[0060] The melt polycondensation method is well known in the art, such as the methods described in patents CN1382172A and CN1090296A. The specific method is as follows: 1) In the first-stage transesterification step, the aromatic bisphenol monomer and diphenyl carbonate are added into the transesterification reactor according to the molar ratio of 1:1.05-1.1 and melted, then a cataly...

Embodiment 1-12

[0079] Examples 1-12 The polycarbonate composite materials prepared according to the above-mentioned general manufacturing method are described, and the raw material composition and mass percentage of these composite materials are shown in Table 3:

[0080] The raw material composition component and mass percentage of table 3 embodiment 1-12

[0081]

[0082] Continued Table 3

[0083]

[0084]

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Abstract

The invention relates to a polycarbonate composite material with low heat release and low smoke, which is characterized in that the composite material is prepared from, by mass, a, 70-90% of polycarbonate; b, 3-10% of organic silicon material; c, 1-7% of promoter containing transition metal; d, 1-7% of molybdenum-containing compound; and e, at most 5% of other auxiliaries; wherein a total mass percentage of the five components a, b, c, d and e is 100%; by selecting a monomer with a specific structure and preferably selecting a proportion thereof, and modifying the polycarbonate material by using polyborosiloxane with the specific structure and a specific branching degree, the flame-retardant performance of prepared polycarbonate composite material reaches a level of V-0 of UL94@3mm, and the smoke density (Ds-4)<120, a heat release rate (MAHRE)<60kW / m2; in the preferred embodiment of the invention, the smoke density (Ds-4)<100), the heat release rate (MAHRE)<50kW / m2, the light transmittance is above 82%. Therefore, the polycarbonate composite material is suitable for flame retardant and fireproof materials inside vehicles (such as airplanes, trains and automobiles).

Description

technical field [0001] The invention relates to the field of thermoplastic engineering plastics, in particular to a low-heat release, low-smoke polycarbonate (PC) composite material and its manufacturing method and application, especially the application as a vehicle flame-retardant material. Background technique [0002] Polycarbonate (PC) is a thermoplastic polymer with excellent comprehensive performance, but the flame retardant performance of PC is average, and its own flame retardant grade can reach the UL94V-2 standard, but because of the specific use of polycarbonate, it needs to have Higher flame retardancy is generally required to meet the UL94V-0 standard, and at the same time requires good mechanical properties, which puts forward very high requirements for the modification of polycarbonate. Modification methods can generally be divided into: 1) chemical modification, that is, introducing halogen, phosphate, silicon and other functional groups with flame retardant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/14C08K13/02C08K3/24C08K3/22C08K3/30
CPCC08K2003/2255C08K2003/3009C08K2201/014C08L69/00C08L2201/02C08L2205/03C08L83/14C08K13/02C08K3/24C08K3/22C08K3/30
Inventor 王鑫
Owner 宁波力达得为高分子科技有限公司
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