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Toughening PBT plastic and preparation method thereof

A PBT resin and plastic technology, applied in the field of modified PBT plastic and its preparation, can solve the problems of tensile strength, bending strength, Vicat heat resistance decline, material toughness decline, etc.

Inactive Publication Date: 2017-01-04
JIANGSU SONGSHANG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The notch sensitivity of untoughened PBT resin has become the main factor limiting its further application. It must be modified by adding a toughening agent during use. Although adding a toughening agent can improve the impact strength, it has an adverse effect on other mechanical strengths. , will reduce the tensile strength, bending strength and Vicat heat resistance of the material, and the excessive addition of reinforcing agent will also lead to a decrease in the toughness of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of toughened PBT plastics, its component ratio by mass percentage is: PBT resin 65%, PA6 resin 14%, antioxidant 0.5%, lubricant 0.5%, toughening agent 10%, compatibilizer 10%, The lubricant is EBS, the antioxidant is a mixture of two antioxidants 168 and 1010 in a weight ratio of 1:1, the toughening agent is AX8900, and the compatibilizer is ring oxygen resin.

[0017] A preparation method of toughened PBT plastics, comprising the steps of:

[0018] (1) Weigh each component according to the above mass ratio;

[0019] (2) Put the weighed PBT resin, PA6 resin, toughener and compatibilizer into the mixer with a rotation speed of 200-300r / min and mix for 20-30min, then add antioxidant and lubricant at 1000-3000r / min / min in a high-speed mixer for 10 to 20 minutes to obtain a mixture;

[0020] (3) Add the mixture obtained in step (2) into the twin-screw extruder, under the conveying and shearing action of the twin-screw extruder, fully melt and plasticize, knead an...

Embodiment 2

[0022] A kind of toughened PBT plastics, its composition ratio by mass percentage is: PBT resin 68%, PA6 resin 12%, antioxidant 0.5%, lubricant 0.5%, toughening agent 12%, compatibilizer 7%, The lubricant is EBS, the antioxidant is a mixture of two antioxidants 168 and 1010 in a weight ratio of 1:1, the toughening agent is AX8900, and the compatibilizer is ring oxygen resin.

[0023] A preparation method of toughened PBT plastics, comprising the steps of:

[0024] (1) Weigh each component according to the mass ratio;

[0025] (2) Put the weighed PBT resin, PA6 resin, toughener and compatibilizer into the mixer with a rotation speed of 200-300r / min and mix for 20-30min, then add antioxidant and lubricant at 1000-3000r / min / min in a high-speed mixer for 10 to 20 minutes to obtain a mixture;

[0026] (3) Add the mixture obtained in step (2) into the twin-screw extruder, under the conveying and shearing action of the twin-screw extruder, fully melt and plasticize, knead and kne...

Embodiment 3

[0028] A kind of toughened PBT plastics, its composition ratio by mass percentage is: PBT resin 72%, PA6 resin 10%, antioxidant 0.5%, lubricant 0.5%, toughening agent 11%, compatibilizer 6%, The lubricant is EBS, the antioxidant is a mixture of two antioxidants 168 and 1010 in a weight ratio of 1:1, the toughening agent is AX8900, and the compatibilizer is ring oxygen resin.

[0029] A preparation method of toughened PBT plastics, comprising the steps of:

[0030] (1) Weigh each component according to the mass ratio;

[0031] (2) Put the weighed PBT resin, PA6 resin, toughener and compatibilizer into the mixer with a rotation speed of 200-300r / min and mix for 20-30min, then add antioxidant and lubricant at 1000-3000r / min / min in a high-speed mixer for 10 to 20 minutes to obtain a mixture;

[0032] (3) Add the mixture obtained in step (2) into the twin-screw extruder, under the conveying and shearing action of the twin-screw extruder, fully melt and plasticize, knead and kne...

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Abstract

The invention discloses a toughening PBT plastic and a preparation method thereof. The toughening PBT plastic is prepared from the components in percentage by mass: 60%-75% of PBT resin, 10%-14% of PA6 resin, 0.3%-0.5% of an antioxidant, 0.5%-1% of a lubricant, 10%-14% of a flexibilizer, and 5%-10% of a compatibilizer, wherein the lubricant is EBS, the antioxidant is a mixture of an antioxidant 168 and an antioxidant 1010 in the weight ratio of the antioxidant 168 to the antioxidant 1010 being 1:1-1:1.2, the flexibilizer is AX8900, and the compatibilizer is epoxy resin. According to the toughening PBT plastic and the preparation method thereof, the notch impact strength is improved notably, and the toughening PBT plastic has favorable tensile strength, is simple in technology and stable in properties.

Description

technical field [0001] The invention belongs to the technical field of plastic modification, and in particular relates to a modified PBT plastic and a preparation method thereof. Background technique [0002] Polybutylene terephthalate, also known as polytetramethylene terephthalate, or PBT for short, is a condensation polymer of terephthalic acid and 1,4-butanediol. PBT plastic is widely used in automobiles, electronic appliances, industrial machinery and other industries because of its high strength, fatigue resistance, dimensional stability, small creep, heat aging resistance, excellent insulation performance, and good processing performance. Such as distributors in automobiles, car body parts, igniter coil skeletons, insulating covers, exhaust system parts, motorcycle igniters, deflection coils in televisions, picture tubes and potentiometer brackets, and sound output in the electronic and electrical industry Transformer frame, adapter frame, switch connector, electric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L77/02C08L63/00C08L23/08C08K5/20C08K5/526C08K5/134
CPCC08L67/02C08L2201/08C08L2205/035
Inventor 孙桂松马兴昌黄忠平
Owner JIANGSU SONGSHANG TECH CO LTD
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