Anti-aging PC-PET (poly carbonate-polyethylene terephthalate) plastic alloy

A technology of PC-PET and plastic alloy, applied in the field of plastic alloy, can solve problems such as poor corona resistance, stress cracking, thermal deformation, etc., and achieve good mechanical properties and dimensional stability, strong impact and high thermal deformation temperature, excellent Effect of Low Temperature Resistance

Active Publication Date: 2013-10-23
SHANTOU LONGQI PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The advantage of PC is that it is rigid and tough at room temperature, but at high temperatures, the thermal deformation is serious
The disadvantage is stress cracking and high viscosity; the long-term use temperature of PET can reach 120 degrees, and its electrical insulation is excellent. Even at high temperature and high frequency, its electrical properties are still good, but its corona resistance is poor, creep resistance, and resistance Good fatigue resistance and dimensional stability; PC-PET plastic alloy retains the advantages of both
[0005] However, the current PC-PET plastic alloys have poor aging resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Each raw material was weighed according to the data corresponding to Example 1 in Table 1. Put each component into a high-speed mixer, control the rotation speed at 300-400 rpm at room temperature, mix for 5-10 minutes, take it out and transfer it to a screw extruder, and extrude at a temperature of 225-245°C for granulation , Obtain anti-aging PC-PET plastic alloy.

[0022] Table 1: Anti-aging PC-PET plastic alloy formula table Unit: kg

[0023]

Example 1

Example 2

Example 3

Example 4

PC resin

70

70

70

70

PET resin

20

20

20

20

Compatibilizer SMA

3

3

3

3

4,4'-Thiobis(6-tert-butyl-3-methylphenol)

0.4

0.8

/

0.5

1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane

0.4

/

0.8

0.5

Dioctadecyl Thiodipropionate

0.2

0.2

0.2

/

[0024] The PC resin is the injection molding grade PC resin of Teijin Company b...

Embodiment 2-4

[0028] Each raw material was weighed according to the data corresponding to Examples 2-4 in Table 1. The method described in Example 1 was used to prepare the anti-aging PC-PET plastic alloy.

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PUM

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Abstract

The invention discloses an anti-aging PC-PET (poly carbonate-polyethylene terephthalate) plastic alloy which consists of the following components in parts by weight: 60-80 parts of PC, 15-25 parts of PET, 2-4 parts of compatilizer and 0.5-1.5 parts of anti-aging agent. The anti-aging PC-PET plastic alloy disclosed by the invention has the characteristics of excellent low-temperature resistance, high impact strength and thermal deformation temperature and good stability in mechanical property and size, and can be widely applied to the fields such as home appliances, electronics, building materials, automobiles and the like; and moreover, the anti-aging PC-PET plastic alloy has excellent thermal aging performance and is applicable to an extreme high-temperature environment.

Description

technical field [0001] The invention relates to a plastic alloy, in particular to an anti-aging PC-PET plastic alloy. Background technique [0002] PET plastic is the abbreviation of Polyethylene terephthalate in English, referred to as PET or PETP. Chinese means: Polyterephthalic acid plastics, mainly including polyethylene terephthalate PET and polybutylene terephthalate PBT. The molecular structure of PET plastic is highly symmetrical, and it has a certain crystal orientation ability, so it has high film-forming properties. PET plastic has good optical performance and weather resistance, and amorphous PET plastic has good optical transparency. In addition, PET plastic has excellent wear resistance, dimensional stability and electrical insulation. [0003] Polycarbonate (referred to as PC) is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08K5/375C08K5/13C08K5/372
Inventor 黄美蓉
Owner SHANTOU LONGQI PLASTIC PROD
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