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PBT-PC composite material and preparation method and application thereof

A composite material, PBT resin technology, applied in the field of polymer materials, can solve the problem of uneven heating of PBT, achieve excellent dimensional stability, improve crystalline properties, and solve the effect of warping

Pending Publication Date: 2022-08-02
SHANGHAI ZHONGLEI NEW MATERIAL SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For the deficiencies in the prior art, the object of the present invention is to provide a kind of PBT-PC composite material and its preparation method and application, use specific PBT-graphene oxide composite material, and combine it with PC resin, flame retardant and glass The fiber is compounded, so that the PBT-PC composite material has excellent thermal conductivity, crystallinity, impact toughness, flame retardancy and dimensional stability, which essentially solves the problem of warpage caused by uneven heating of PBT

Method used

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  • PBT-PC composite material and preparation method and application thereof
  • PBT-PC composite material and preparation method and application thereof
  • PBT-PC composite material and preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example 1

[0105] A PBT-graphene oxide composite material A1 comprises, in parts by weight: 99 parts of PBT resin, 0.5 part of graphene oxide, 0.04 part of silane coupling agent, and 0.1 part of antioxidant.

[0106] The preparation method of the described PBT-graphene oxide composite material A1 is as follows: according to the formula amount, the PBT resin, graphene oxide, silane coupling agent and antioxidant after the baking material are mixed at high speed in a mixer, and the rotating speed is 700rpm, The mixing time is 10min to keep it uniform; the mixed material is fed into the twin-screw extruder through the main feed, and the temperature of each zone is as follows: the temperature of the first zone is 215°C, the temperature of the second zone is 225°C, and the temperature of the third zone is 235°C , the temperature in the fourth zone is 235°C, the temperature in the fifth zone is 235°C, the temperature in the sixth zone is 235°C, the temperature in the seventh zone is 235°C, the ...

preparation example 2-5

[0108] A PBT-graphene oxide composite material, denoted as A2-A5 respectively, differs from Example 1 only in that the consumption of the components is different, as shown in Table 1; the types and preparation methods of the components are the same as those of the Example 1 is the same.

Embodiment 1

[0120] A PBT-PC composite material, comprising the following components in parts by weight:

[0121]

[0122] The preparation method of the PBT-PC composite material is as follows: according to the formula amount, the baked PBT-graphene oxide composite material, PC resin, flame retardant, glass fiber, transesterification inhibitor, anti-drip agent, compatibility Mixing agent, antioxidant, toughening agent and lubricant in a mixer, the mixing speed is 500rpm, and the mixing time is 15min; the mixed material is added to the twin-screw extruder, and the temperature of each zone is set as follows: 1. The temperature of zone 2 is 220℃, the temperature of zone 2 is 230℃, the temperature of zone 3 is 240℃, the temperature of zone 4 is 240℃, the temperature of zone 5 is 240℃, the temperature of zone 6 is 240℃, the temperature of zone 7 is 240℃, and the temperature of zone 8 is 240℃. The temperature is 235°C, the temperature of the ninth zone is 235°C, the temperature of the tenth z...

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Abstract

The invention provides a PBT-PC composite material as well as a preparation method and application thereof. The PBT-PC composite material comprises the following components in parts by weight: 20-60 parts of a PBT-graphene oxide composite material, 5-40 parts of PC resin, 5-20 parts of a flame retardant and 5-40 parts of glass fibers, the PBT-graphene oxide composite material is prepared from the following components in parts by weight: 80 to 100 parts of PBT resin and 0.2 to 5 parts of graphene oxide. Through compounding of the PBT-graphene oxide composite material with specific components, the PC resin, the flame retardant and the glass fiber, the overall comprehensive performance of the composite material is greatly improved, the problems of warping and the like caused by uneven heating of PBT are fundamentally solved, and the provided PBT-PC composite material has excellent crystallization property, heat resistance, impact toughness, dimensional stability and flame retardance and is suitable for industrial production. And the performance requirements of electrical equipment and engine peripheral parts on materials can be fully met.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a PBT-PC composite material and a preparation method and application thereof. Background technique [0002] Polybutylene terephthalate (PBT) is obtained by the polycondensation of phthalic acid and 1,4-butanediol. It is a semi-crystalline engineering plastic with a fast crystallization rate. The molecular structure contains rigid chains of benzene rings. It has good solvent resistance and weather resistance, etc., and the four methylene structures make it have good melt fluidity, as well as good heat resistance, self-lubrication, and low water absorption. However, the glass transition temperature T of PBT g Low, only about 45 ℃, the molding shrinkage of the product is large, about 1.7-2.3%, resulting in strong notch sensitivity and poor impact toughness. At the same time, due to the uneven temperature during the crystallization process, the orientation and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08K3/04C08K7/14C08K5/523C08K3/34
CPCC08L69/00C08L67/02C08L2201/08C08L2201/02C08K3/042C08K7/14C08K5/523C08K3/34
Inventor 刘春艳王慧珊
Owner SHANGHAI ZHONGLEI NEW MATERIAL SCI CO LTD
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