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Tin-soldering resistant polybutylece terephthalate (PBT) engineering plastic and method for preparing same

A technology for engineering plastics and soldering, which is applied in the field of solder-resistant engineering plastic PBT and its preparation, can solve the problems of inability to meet the use environment, and achieve the effects of meeting the requirements of solder resistance, good compatibility, and cost reduction

Inactive Publication Date: 2010-06-02
JIANGYIN JIHUA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat deflection temperature of pure PBT resin is about 156°C at 0.46MPa, and about 60°C at 1.82MPa, which makes pure PBT resin unsatisfactory when used as engineering electrical products.

Method used

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  • Tin-soldering resistant polybutylece terephthalate (PBT) engineering plastic and method for preparing same
  • Tin-soldering resistant polybutylece terephthalate (PBT) engineering plastic and method for preparing same
  • Tin-soldering resistant polybutylece terephthalate (PBT) engineering plastic and method for preparing same

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Experimental program
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Effect test

Embodiment Construction

[0014] (1) Product formula

[0015]

product name

Add ratio (weight percent

Compare)

PBT

40.4％

Decabromodiphenylethane

13％

[0016]

product name

Add ratio (weight percent

Compare)

Antimony trioxide

5％

PTW (ethylene-butyl acrylate-glycidyl

ester terpolymer)

4％

Antiaging agent 1076 (β-(3,5-di-tert-butyl

-4-Hydroxyphenyl) octadecyl propionate)

0.2％

Anti-aging agent 626 (pentaerythritol diphosphite

Ester bis-(2,4-di-tert-butylphenyl))

0.4％

Short glass fiber (length 2-4mm)

30％

TN3500 (modified polytetrafluoroethylene)

5％

A-C 540 (polyethylene wax)

2％

Sum

100％

[0017] (2) Production process

[0018] Polybutylene terephthalate enters from the first barrel of the twin-screw extruder after drying, flame retardants (decabromodiphenylethane and antimony trioxide),...

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Abstract

The invention relates to tin-soldering resistant polybutylece terephthalate (PBT) engineering plastic and a method for preparing the same. The PBT engineering plastic comprises the following raw material by weight percent: 40-45 percent of PBT, 9-16 percent of flame retardant of decabromodiphenyl ethane, 3-6 percent of antimony trioxide, 1-5 percent of plasticizer of ethylene-butyl acrylate-glycidyl ester terpolymer, 0.1-0.5 percent of compound anti-aging agent of Belta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecanol ester, 0.1-0.5 percent of pentaerythritol bis-phosphite ester (2, 4-di-tert-butyl-phenyl), 25-35 percent of short glass fiber, 3-6 percent of modified polytetrafluoroethylene TN3500 and 1-4 percent of release agent of polyethylenewax. The total weight percent of the raw materials is 100. The tin-soldering resistant PBT engineering plastic has low price and low requirement for the mold injecting and molding equipment.

Description

(1) Technical field [0001] The invention relates to a solder-resistant engineering plastic PBT and a preparation method thereof. Solder-resistant engineering plastic PBT is mainly used in transformer skeleton and connector engineering electrical products. (2) Background technology [0002] Polybutylene terephthalate (PBT) is a polymer obtained by esterification and polycondensation of terephthalic acid (TPA) and 1,4-butanediol (BDO). PBT has high mechanical strength, outstanding chemical resistance and excellent electrical properties. The heat distortion temperature of pure PBT resin is about 156°C at 0.46MPa, and about 60°C at 1.82MPa, which makes pure PBT resin unsatisfactory for its use environment when used as engineering electrical products. In order to increase the heat distortion temperature of PBT under pressure, it is usually necessary to effectively modify the pure PBT resin. Effective reprocessing is carried out by strengthening (such as adding glass fiber), fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L27/18C08L23/08C08L33/08C08L23/06C08K13/04C08K5/03C08K3/22C08K5/101C08K5/524C08K7/14
Inventor 卞成祥
Owner JIANGYIN JIHUA NEW MATERIAL
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