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Heat-resistant and high-crystallized enhanced PET/LCP (polyethylene terephthalate/liquid crystal polymer) alloy material and preparation method thereof

An alloy material and high crystallization technology, applied in the field of heat-resistant high crystallization reinforced PET/LCP alloy material and its preparation, can solve the problems of low notched impact strength of PBT, slow crystallization speed of PET, large molding shrinkage, etc., and achieve reduction Effects of stress and warpage, high compatibility, and low internal stress

Inactive Publication Date: 2019-07-23
SUZHOU WEIRUICHENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, PET has a slow crystallization speed, is easy to warp, and has a relatively narrow application range. At the same time, PBT has low notched impact strength and large molding shrinkage, which is difficult to meet people's needs.

Method used

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  • Heat-resistant and high-crystallized enhanced PET/LCP (polyethylene terephthalate/liquid crystal polymer) alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A heat-resistant high-crystallization reinforced PET / LCP alloy material comprises the following components in parts by weight:

[0039] Polyethylene terephthalate (PET) 50 parts

[0040] Liquid crystal polymer (LCP) 20 parts

[0041] 30 parts glass fiber

[0042] 0.3 part of transesterification inhibitor

[0043] 0.3 parts of coupling agent

[0044] Nucleating agent 1 part

[0045] Antioxidant 0.2 part

[0046] Lubricant 0.5 parts

[0047] 2 parts of compatible toughening agent.

[0048] Specifically, the intrinsic viscosity of the polyethylene terephthalate (PET) is 0.87.

[0049] Specifically, the liquid crystal polymer (LCP) is a copolyester liquid crystal polymer.

[0050] Specifically, the glass fiber is short glass fiber dedicated to polyester.

[0051] Specifically, the transesterification inhibitor is one or both of triphenyl phosphite and disodium hydrogen phosphate. Further, the transesterification inhibitor is SA-PGP-B transesterification inhibitor....

Embodiment 2

[0063] The difference between this embodiment and Embodiment 1 is that a heat-resistant high-crystallization reinforced PET / LCP alloy material includes the following components in parts by weight:

[0064] Polyethylene terephthalate (PET) 45 parts

[0065] Liquid crystal polymer (LCP) 25 parts

[0066] 30 parts glass fiber

[0067] 0.4 part of transesterification inhibitor

[0068] 0.3 parts of coupling agent

[0069] Nucleating agent 1 part

[0070] Antioxidant 0.2 parts

[0071] Lubricant 0.5 parts

[0072] 2 parts of compatible toughening agent.

[0073] The present invention also provides a preparation method of the heat-resistant high crystallization reinforced PET / LCP alloy material, comprising the following steps:

[0074] (1) Preparation of raw materials: In parts by weight, it includes 45 parts of polyethylene terephthalate (PET), 25 parts of liquid crystal polymer (LCP), 30 parts of glass fiber, 0.4 part of transesterification inhibitor, coupling 0.3 parts of...

Embodiment 3

[0079] The difference between this embodiment and Embodiment 1 is that a heat-resistant high-crystallization reinforced PET / LCP alloy material includes the following components in parts by weight:

[0080] Polyethylene terephthalate (PET) 40 parts

[0081] Liquid crystal polymer (LCP) 30 parts

[0082] 30 parts glass fiber

[0083] Transesterification inhibitor 0.5 parts

[0084] 0.3 parts of coupling agent

[0085] Nucleating agent 1 part

[0086] Antioxidant 0.2 parts

[0087] Lubricant 0.5 parts

[0088] 2 parts of compatible toughening agent.

[0089] The present invention also provides a preparation method of the heat-resistant high crystallization reinforced PET / LCP alloy material, comprising the following steps:

[0090] (1) Preparation of raw materials: In parts by weight, it includes 40 parts of polyethylene terephthalate (PET), 30 parts of liquid crystal polymer (LCP), 30 parts of glass fiber, 0.5 parts of transesterification inhibitor, coupling 0.3 parts of ...

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Abstract

The invention discloses a heat-resistant and high-crystallized enhanced PET / LCP (polyethylene terephthalate / liquid crystal polymer) alloy material and a preparation method thereof. The alloy materialis prepared from components in parts by weight as follows: 40-50 parts of PET, 20-30 parts of LCP, 30-40 parts of glass fibers, 0.1-0.5 parts of an ester exchange inhibitor, 0.2-0.5 parts of a coupling agent, 0.2-2 parts of a nucleating agent, 0.2-0.5 parts of an antioxidant, 0.2-0.6 parts of a lubricating agent and 0.5-3 parts of a compatible toughening agent. The alloy material prepared with themethod has the characteristics of high heat resistance, good crystallization and the like, is applied to heat-resistant and high-performance engineering plastics used by electric appliance forced members, structural members and accessories with requirements for heat resistance and high rigidity and has good electrical performance, the safe and environment-friendly raw materials are adopted, the crystallization rate of PET is increased by LCP, and meanwhile, rigidity and heat resistance of the material are improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a heat-resistant high-crystallization reinforced PET / LCP alloy material and a preparation method thereof. Background technique [0002] PET (polyethylene terephthalate) is one of the most commonly used engineering thermoplastic materials, it is a semi-crystalline material, has very good chemical stability, mechanical strength, electrical insulation properties and thermal stability, and moisture absorption Very weak. [0003] However, PET has a slow crystallization speed, is easy to warp, and has a relatively narrow application range. At the same time, PBT has low notched impact strength and large molding shrinkage, which is difficult to meet people's needs. [0004] LCP (Liquid Crystal Polymer) is a new type of polymer material, which generally exhibits liquid crystallinity in the molten state. This type of material has excellent heat resistance and molding processabil...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/00C08L51/04C08L23/08C08K13/04C08K7/14C08K5/06C08K5/526C08K3/32C08K5/5435C08K5/544
CPCC08K2003/324C08L67/02C08L2201/08C08L2205/03C08L2205/24C08L67/00C08L51/04C08L23/0869C08L23/0884C08K13/04C08K7/14C08K5/06C08K5/526C08K3/32C08K5/5435C08K5/544
Inventor 唐强王克成李世平
Owner SUZHOU WEIRUICHENG NEW MATERIAL
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