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High volume resistivity ptt composite material and preparation method thereof

A technology of high volume resistivity and composite materials, which is applied in the field of composite materials, can solve the problems that the volume resistivity and mechanical properties cannot meet the needs of reality and limit the application range, so as to improve creep resistance and reduce the amount of flame retardants , Improve the effect of dimensional stability

Active Publication Date: 2018-09-11
古道尔工程塑胶(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the upgrading and development of industrial fields such as electronic appliances have put forward higher requirements for the comprehensive performance of electrical insulation bearing materials, but the existing PTT materials cannot meet the actual needs in terms of volume resistivity and mechanical properties, which will greatly limit its use. Application range

Method used

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  • High volume resistivity ptt composite material and preparation method thereof

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preparation example Construction

[0032] The preparation method of the high volume resistivity PTT composite material of an embodiment of the present invention, comprises the following steps:

[0033] Mix PTT, syndiotactic polystyrene, flame retardant, flame retardant synergist, compatibilizer, coupling agent, antioxidant, nucleating agent and other additives to obtain a premix, and mix the premix with The basalt fiber is extruded and granulated to obtain a PTT composite material with high volume resistivity.

[0034] Specifically, PTT and sPS can be dried at 100-130°C for 1-4 hours, and then the dried PTT and sPS, compatibilizer and coupling agent can be added to the mixer at a speed of 200-500 rpm Stir and mix for 1-3 minutes, then add flame retardant, flame retardant synergist, antioxidant, nucleating agent and other additives, stir and mix for 3-5 minutes at a speed of 200-500 rpm to obtain a mixed Homogeneous premix. Adding the premixture into a twin-screw extruder, adding basalt fiber, melting, extrudi...

Embodiment 1

[0038]After the PTT resin with an intrinsic viscosity of 1.0dl / g, a syndiotacticity of 97%, and a weight-average molecular weight of 300,000 sPS resin was air-dried at 120°C for 3 hours, 46 parts of PTT, 18 parts of Add sPS, 5 parts of compatibilizer ethylene vinyl acetate copolymer, 0.6 parts of silane ester coupling agent into the mixer, mix and stir for 1 minute at a speed of 300 rpm, and then add 16.6 parts of flame retardant after the mixer stops Agent brominated polystyrene, 3 parts of flame retardant synergist sodium antimonate, 0.2 part of antioxidant 1098, 0.2 part of antioxidant 626, 0.4 part of nucleating agent sodium benzoate in a mixer at a speed of 450 rpm Stir and mix for 3 minutes to obtain a homogeneous premix;

[0039] Place the premix in a twin-screw extruder and melt and extrude it under the following conditions: Zone 1: 180°C; Zone 2: 220°C; Zone 3: 240°C; Zone 4: 250°C; Zone 5: 240°C; Zone 6: 230°C; zone 220°C; zone 8 210°C; zone 9 220°C; machine head 24...

Embodiment 2

[0041] After the PTT resin with an intrinsic viscosity of 0.9dl / g, a syndiotacticity of 97.5%, and a weight-average molecular weight of 400,000 sPS resin was air-dried at 110°C for 4 hours, 45.4 parts of PTT, 10 parts of Add sPS, 2 parts of compatibilizer maleic anhydride grafted polyethylene-vinyl acetate copolymer elastomer, and 0.4 part of titanate coupling agent into the mixer, mix and stir for 2 minutes at a speed of 250 rpm, and wait for the mixer to stop Finally, add 16.6 parts of flame retardant brominated epoxy resin, 2.5 parts of flame retardant synergist antimony trioxide, 2 parts of flame retardant synergist montmorillonite, 0.3 part of antioxidant 1076, 0.3 part of antioxidant 168. Put 0.2 part of nucleating agent calcium monocarboxylate and 0.3 part of lubricant SEED in a mixer, stir and mix for 4 minutes at a speed of 300 rpm to obtain a uniformly mixed premix;

[0042] Put the premix in a twin-screw extruder and melt and extrude it under the following condition...

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Abstract

The invention relates to a high-volume resistivity PTT composite material and a preparation method thereof. The high-volume resistivity PTT composite material comprises 20 to 55 parts of PTT, 10 to 20 parts of syndiotactic polystyrene, 10 to 50 parts of basalt fibers, 12 to 16.6 parts of a flame retardant, 3 to 4.5 parts of a flame retardant synergist, 2 to 5 parts of a compatibilizer, 0.4 to 0.6 parts of a coupling agent, 0.4 to 0.6 parts of an antioxidant, 0 to 0.4 parts of a nucleating agent and 0 to 3 parts of other adjuvants. The high volume resistivity PTT composite material is modified by syndiotactic polystyrene so that the volume resistivity and heat resistance of the PTT composite material are improved. Through use of the corresponding coupling agent and compatibilizer, the basalt fibers, PTT and sPS are coupled so that volume resistivity is not influenced, mechanical properties and heat resistance of the PTT composite material are greatly improved, and corrosion resistance is excellent. The high-volume resistivity PTT composite material has a good application prospect in the fields of electronics, electric appliances, aerospace, automotives, fire fighting and machinery.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a high volume resistivity PTT composite material and a preparation method thereof. Background technique [0002] Polytrimethylene terephthalate (PTT) is a new type of thermoplastic polyester with broad development prospects successfully developed in the 1990s. It is mainly formed by polycondensation of terephthalic acid (PTA) and 1,3-propylene glycol (PDO). , and polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) belong to the same high molecular aromatic polymer series. Compared with PBT and PET, it has better high elasticity, processing performance, electrical performance, mechanical performance and dimensional stability. PTT maintains the excellent wrinkle resistance and chemical resistance of PET, and because of its unique helical structure and the softness of nylon, its good comprehensive performance has been rapidly developed and applied in engineering...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L25/06C08L23/08C08L51/06C08L51/00C08K13/04C08K7/10C08K5/54C08K5/10C08K3/24C08K5/20C08K5/098C08K3/22C08K3/34
CPCC08K2201/003C08L67/02C08L2201/02C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L25/06C08L23/0853C08K13/04C08K7/10C08K5/54C08K2003/2282C08K5/20C08K5/098C08L51/06C08L63/00C08K5/10C08K5/526C08K3/2279C08L51/006C08K3/346C08K5/1345
Inventor 刘辉陶德良
Owner 古道尔工程塑胶(深圳)有限公司
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