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A kind of high-strength flame-retardant PCT engineering plastics and preparation method thereof

An engineering plastic, high-strength technology, which is applied in the field of high-strength flame-retardant PCT engineering plastics and its preparation, can solve the problems of PCT engineering plastics, such as the decline in mechanical properties, affecting the performance of PCT engineering plastics, and the improvement effect is not obvious, so as to achieve the improvement Heat resistance, high bending strength, and strong overall performance

Active Publication Date: 2021-07-23
广东九彩新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, although traditional PCT engineering plastics have good heat resistance, their strength and flame retardant effect are biased.
In the prior art, the strength can be improved by adding inorganic fibers to PCT engineering plastics, but there is a problem that the compatibility between inorganic fibers and PCT engineering plastics is poor, resulting in a not very obvious improvement effect, and It will also affect other properties of PCT engineering plastics
In addition, although the flame retardant effect of PCT engineering plastics can be improved by adding a certain amount of flame retardant, it will lead to a decrease in the mechanical properties of PCT engineering plastics.

Method used

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  • A kind of high-strength flame-retardant PCT engineering plastics and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] A high-strength flame-retardant PCT engineering plastic, which uses PCT resin as a matrix and includes the following components in parts by weight: 75 parts of PCT resin, 15 parts of modified glass fiber, 6 parts of modified expanded vitrified microspheres, and lignin 3 parts of sodium sulfonate and 1 part of auxiliary agent; among them, the modified glass fiber is obtained by coating nano-titanium dioxide and carbon nanotubes on the surface of the glass fiber through electrostatic adsorption technology, and the modified expanded vitrified microbeads are organic silicon surface active In addition, the above-mentioned additives include the following components in parts by weight: 0.3 parts of coupling agent, 0.2 part of antioxidant, 0 part of halogen-free flame retardant, 0.5 part of toughening agent , wherein the coupling agent is a polyether modified silane coupling agent, and the toughening agent is a graft copolymer of polyolefin and acrylate monomer.

[0025] The pr...

Embodiment 2

[0031] A high-strength flame-retardant PCT engineering plastic, with PCT resin as the matrix, including the following components in parts by weight: 40 parts of PCT resin, 30 parts of modified glass fiber, 12 parts of modified expanded vitrified microspheres, lignin 8 parts of sodium sulfonate, 10 parts of additives; among them, the modified glass fiber is obtained by coating nano-titanium dioxide and carbon nanotubes on the surface of the glass fiber through electrostatic adsorption technology, and the modified expanded vitrified microbeads are organic silicon surface active In addition, the above-mentioned additives include the following components in parts by weight: 1 part of coupling agent, 0.5 parts of antioxidant, 3 parts of halogen-free flame retardant, 9 parts of toughening agent , wherein the coupling agent is a polyether modified silane coupling agent, and the toughening agent is a graft copolymer of polyolefin and acrylate monomer.

[0032] The preparation method o...

Embodiment 3

[0038] A high-strength flame-retardant PCT engineering plastic, with PCT resin as the matrix, including the following components in parts by weight: 65 parts of PCT resin, 20 parts of modified glass fiber, 8 parts of modified expanded vitrified microspheres, lignin 5 parts of sodium sulfonate and 2 parts of additives; among them, the modified glass fiber is obtained by coating nano-titanium dioxide and carbon nanotubes on the surface of the glass fiber through electrostatic adsorption technology, and the modified expanded vitrified microbeads are organic silicon surface active In addition, the above-mentioned additives include the following components in parts by weight: 0.3 parts of coupling agent, 0.2 parts of antioxidant, 0.1 part of halogen-free flame retardant, 1.4 parts of toughening agent , wherein the coupling agent is a polyether modified silane coupling agent, and the toughening agent is a graft copolymer of polyolefin and acrylate monomer.

[0039] The preparation m...

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Abstract

The invention discloses a high-strength flame-retardant PCT engineering plastic and a preparation method thereof, belonging to the field of new chemical materials. The PCT engineering plastic is based on PCT resin, and includes the following components in parts by weight: 40-75 parts of PCT resin, 15-30 parts of modified glass fiber, 6-12 parts of modified expanded vitrified microspheres, wood 3-8 parts of sodium sulfonate, 1-10 parts of additives; wherein, the modified glass fiber is obtained by coating nano-titanium dioxide and carbon nanotubes on the surface of the glass fiber by electrostatic adsorption technology. In the present invention, by adding components such as modified glass fibers, modified expanded vitrified microspheres and sodium lignosulfonate, engineering plastics with high strength and excellent flame retardancy and heat resistance can be prepared, which can solve the existing problems. PCT engineering plastics have low strength and poor flame retardant effect, thus increasing the application range of PCT engineering plastics.

Description

technical field [0001] The invention relates to the field of new chemical materials, in particular to a high-strength flame-retardant PCT engineering plastic and a preparation method thereof. Background technique [0002] The focus of my country's new chemical materials development includes: special synthetic rubber, engineering plastics, high-performance fibers, fluorosilicon materials, degradable materials, functional membrane materials, functional polymer materials and composite materials. Among them, poly(1,4-cyclohexanedimethylene terephthalate) (PCT) is a new type of engineering resin, compared with traditional polybutylene terephthalate (PBT), polyester (PET ) and polycarbonate (PC), to have better heat resistance. Therefore, engineering plastics made of PCT resin can be applied to many fields of high temperature resistant materials. [0003] However, although traditional PCT engineering plastics have good heat resistance, their strength and flame retardant effect a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L97/00C08L51/06C08K9/02C08K7/14C08K9/12C08K3/22C08K3/04C08K9/06C08K7/28
CPCC08K2003/2241C08K2201/011C08L67/02C08L2201/02C08L2201/08C08L97/005C08L51/06C08K9/02C08K7/14C08K9/12C08K3/22C08K3/041C08K9/06C08K7/28
Inventor 李刚杨迪忠
Owner 广东九彩新材料有限公司