Low-dielectric high-toughness reinforced PBT/PPO (polybutylene terephthalate/polyphenylene oxide) composition and preparation method thereof

A high-toughness, low-dielectric technology, applied in the field of materials, to achieve the effect of reducing the dielectric constant and dielectric loss, uniform and stable dielectric properties, and optimizing compatibility

Inactive Publication Date: 2019-04-05
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is mainly used as a printed circuit board film material to improve the high dielectric constant and high dielectric loss of polyimide film, but only by adding untreated PTFE, it does not involve the field of engineering plastic modification

Method used

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  • Low-dielectric high-toughness reinforced PBT/PPO (polybutylene terephthalate/polyphenylene oxide) composition and preparation method thereof
  • Low-dielectric high-toughness reinforced PBT/PPO (polybutylene terephthalate/polyphenylene oxide) composition and preparation method thereof
  • Low-dielectric high-toughness reinforced PBT/PPO (polybutylene terephthalate/polyphenylene oxide) composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] In this embodiment, a low-dielectric and high-toughness reinforced PBT / PPO composition is prepared from the following raw materials in parts by weight:

[0068] PBT

45

PPOs

55

glass fiber

20

Compatibilizer

6

antioxidant

0.6

PTFE

5

Plasticizer

1

A silane coupling agent

1

[0069] The number average molecular weight of PBT is 30,000, the number average molecular weight of PPO is 30,000, the compatibilizer is PE-g-MAH, the plasticizer is DINP, and the silane coupling agent is γ-(2,3-glycidyloxy)propyltrimethyl Oxysilane, the antioxidant is a mixture of pentaerythritol esters (antioxidant 1010) and phosphite esters (antioxidant 168) (weight ratio 1:1), PTFE molecular weight is 150000, particle size is 20μm, plastic The weight ratio of curing agent to silane coupling agent is 1:1.

[0070] The preparation process of the above-mentioned low dielectric high toughness reinforced PBT / PPO comp...

Embodiment 2

[0074] In this embodiment, a low-dielectric and high-toughness reinforced PBT / PPO composition is prepared from the following raw materials in parts by weight:

[0075] PBT

55

PPOs

45

glass fiber

25

Compatibilizer

8

antioxidant

0.7

PTFE

10

Plasticizer

0.8

A silane coupling agent

0.4

[0076] The number average molecular weight of PBT is 40000, the number average molecular weight of PPO is 40000, the compatibilizer is PPO-g-MAH, the plasticizer is DOP, the silane coupling agent is γ-aminopropyltriethoxysilane, and the antioxidant is A mixture of pentaerythritol esters (antioxidant 1010) and phosphite esters (antioxidant 168) (weight ratio 1:1), PTFE molecular weight 200000, particle size 30μm, plasticizer and silane coupling agent The weight ratio is 2:1.

[0077] The preparation process of the above-mentioned low dielectric high toughness reinforced PBT / PPO composition is as follows:

[007...

Embodiment 3

[0081] In this embodiment, a low-dielectric and high-toughness reinforced PBT / PPO composition is prepared from the following raw materials in parts by weight:

[0082] PBT

65

PPOs

35

glass fiber

30

Compatibilizer

10

antioxidant

0.8

PTFE

20

Plasticizer

0.9

A silane coupling agent

0.3

[0083] The number average molecular weight of PBT is 50,000, the number average molecular weight of PPO is 50,000, the compatibilizer is PP-g-MAH, the plasticizer is DBP, and the silane coupling agent is γ-(methacryloyloxy)propyltrimethoxysilane , the antioxidant is a mixture (weight ratio 1:1) of pentaerythritol esters (antioxidant 1010) and phosphite (antioxidant 168), the molecular weight of PTFE is 350000, and the particle size is 35 μm. The plasticizer and The weight ratio of silane coupling agent is 3:1.

[0084] The preparation process of the above-mentioned low dielectric high toughness reinforced PBT / ...

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Abstract

The invention relates to a low-dielectric high-toughness reinforced PBT/PPO (polybutylene terephthalate/polyphenylene oxide) composition and a preparation method thereof. The low-dielectric high-toughness reinforced PBT/PPO composition is made from, by weight, 45-85 parts of PBT and 15-55 parts of PPO, adding up to 100 parts, as well as 20-40 parts of glass fiber, 6-14 parts of a compatibilizer, 0.6-1 part of an antioxidant, 5-20 parts of polytetrafluoroethylene, 0.2-1 part of a plasticizer, 0.2-1 part of a silane coupling agent, wherein the weight ratio of the plasticizer to the silane coupling agent is 1:1 to 5:1. The PBT/PPO composition can meet the high requirements of the fields, such as electronic and electrical engineering, integrated circuit packaging and electromagnetic wave shielding, for dielectric properties, strength and toughness.

Description

technical field [0001] The invention relates to the field of materials, in particular to a low-dielectric and high-toughness reinforced PBT / PPO composition and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a semi-crystalline thermoplastic polyester with good heat resistance, weather resistance and chemical resistance, as well as excellent electrical properties, low water absorption and good The product appearance and other advantages are widely used in automobiles, mechanical equipment, and electrical and electronic manufacturing industries, such as connectors, transformers, fuse casings, switches, relays, energy-saving lamps, coil skeletons, motor casings, etc. These industries are harmful to combustion and safety. Sex has strict requirements. In addition, with the expansion of application performance, the demand for PBT materials in the fields of electronics and electrical engineering, integrated circuit packaging, and ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L71/12C08L27/18C08L51/06C08K7/14B29C48/40B29C48/92
CPCC08L67/02C08L71/12C08L2205/035C08L2205/08C08L27/18C08L51/06C08K7/14C08L51/08
Inventor 易庆锋廖虎辉王灿耀于海鸥方安平
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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