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Filled and modified PBT powder and preparation method thereof

A powder and modification technology, which is applied in the field of filling and modified PBT powder and its preparation, can solve the problems of limited application of PBT, low notched impact strength, poor flame retardancy, etc., and achieves good processing performance, simple preparation method, and excellent flame retardancy. performance effect

Inactive Publication Date: 2015-08-19
QINGDAO WANLI TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

However, pure PBT materials have shortcomings such as low notched impact strength, high brittleness, and poor flame retardancy, which greatly limit the application of PBT in certain fields.

Method used

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Embodiment Construction

[0016] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0017] A filling modified PBT powder, its components are proportioned by mass percentage: PBT 56%, particle size 0.1μm ~ 20μm ground calcium carbonate 25%, melamine polyphosphate flame retardant 15%, aluminum-titanium composite couple Joint agent 0.4%, light stabilizer 2%, erucamide 0.3%, pentaerythritol stearate 1%, antioxidant 0.3%. The PBT is polybutylene terephthalate. Wherein, the light stabilizer is a compound composed of hindered amine light stabilizer HS-944 and HS-622 with a mass ratio of 1:1; the antioxidant is a hindered phenolic antioxidant with a mass ratio of 1:1 A compound of 1076 and phosphite antioxidant 168.

[0018] The preparation method is as follows: (1) Dry the PBT at 120°C-140°C for 4-6 hours, and dry the melamine polyphosphate flame retardant at 60°C-80°C for 30-45 minutes before use; (2) 1. Weigh the heavy calcium carb...

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Abstract

The present invention discloses filled and modified PBT powder and a preparation method thereof, wherein the filled and modified PBT powder comprises, by mass, 50-80% of PBT, 5-25% of heavy calcium carbonate, 10-15% of a flame retardant agent, 0.1-0.5% of an aluminum-titanium composite coupling agent, 0.5-2% of a light stabilizer, 0.1-1% of erucylamide, 0.1-1% of pentaerythrityl tetrastearate, and 0.1-0.5% of an antioxidant, wherein the particle size of the heavy calcium carbonate is 0.1-20 [mu]m. The filled and modified PBT powder of the present invention has beneficial effects of good mechanical property, good heat resistance, excellent flame retardant property, good processability, simple preparation method, and cost reducing, can achieve the UL94V-0 grade, and has good practical values and prospects in the fields of electronic apparatuses, chemical industry, machinery and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a filling modified PBT powder and a preparation method thereof. Background technique [0002] PBT (polybutylene terephthalate) is a crystalline linear saturated polyester engineering plastic, which has been widely used in many fields. However, pure PBT materials have the disadvantages of low notched impact strength, high brittleness, and poor flame retardancy, which greatly limit the application of PBT in certain fields. Contents of the invention [0003] The purpose of the present invention is to provide a filling modified PBT powder with high mechanical strength, good flame retardancy and low cost and a preparation method thereof. [0004] The technical scheme adopted by the present invention to solve the technical problem is: a kind of filled modified PBT powder, its components are proportioned by mass percentage: PBT 50%-80%, heavy calcium carbonate 5%-25%, flame...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/06C08K9/10C08K9/04C08K3/26C08K5/523C08K5/3492
Inventor 不公告发明人
Owner QINGDAO WANLI TECH
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