PBT/ABS alloy material and method for preparing same

A technology of alloy material and composition, which is applied in the field of PBT/ABS alloy material and its preparation, can solve the problems of low heat resistance of bumpers, increased processing and logistics costs, bumper loosening or damage, etc., so as to omit processing Craftsmanship, short baking time, not easy to loosen or damage

Inactive Publication Date: 2008-10-15
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, both foreign and domestic bumper materials are mainly composite materials of polypropylene plus elastomer and minerals. Although they meet the current automotive material standards, there are many functional deficiencies in subsequent processing, which need to be compensated by increasing processes. Not only Increased processing and logistics costs, and the increase of defective products in the process of processing, the typical problems are:
Flame treatment is a key procedure in the current polypropylene bumper coating process. Under normal production conditions, its product rate is about 3% of the total amount of the bumper system. However, if the flame process is not handled properly, the The entire batch of painted bumpers will be scrapped, which will cause hu

Method used

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  • PBT/ABS alloy material and method for preparing same

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example 1

[0036] Preparation of activated compatibilizer: 2KG of activator glycine methacrylate, 56.5KG of acrylonitrile-styrene copolymer, 40KG of acrylonitrile-butadiene-styrene copolymer, initiator bis(tert-butyl peroxy 0.5KG of isopropyl) benzene peroxide, and 1KG of other additives are reacted and extruded in a twin-screw with a length of 48:1, and the reaction temperature is 240°C, and the reaction time is 40 seconds;

[0037] PBT 70%, ABS 25%, activated compatibilizer 4%, processing lubricant polysiloxane 0.4%, phenolic antioxidant 1076 (CIBA company) 0.3%, light stabilizer 2-(2 hydroxyl-3, 5-di-tert-amylphenyl)-benzotriazole light stabilizer (CYTEC company) 0.3%; Mix evenly and put into the hopper of twin-screw extruder, extrude through melting, granulate, fully plasticize, melt, Composite, then extruded, drawn, cooled, pelletized, dried and packaged; the processing technology is as follows: twin-screw extruder at 230°C in the first zone, 235°C in the second zone, 235°C in the t...

Embodiment 2

[0039] PBT 60%, ABS 31%, activated compatibilizer 8%, processing lubricant polysiloxane 0.4%, phenolic antioxidant 1076 (CIBA company) 0.3%, light stabilizer 2-(2 hydroxyl-3, 5-di-tert-amylphenyl)-benzotriazole light stabilizer (CYTEC company) 0.3%; Mix evenly and put into the hopper of twin-screw extruder, extrude through melting, granulate, fully plasticize, melt, Composite, then extruded, drawn, cooled, pelletized, dried and packaged; the processing technology is as follows: twin-screw extruder at 230°C in the first zone, 235°C in the second zone, 235°C in the third zone, 235°C in the fourth zone, and 235°C in the fifth zone Zone 235°C, Zone 6 230°C, Zone 7 230°C, Zone 8 230°C; screw speed controlled at 350 rpm; residence time 2-10min.

Embodiment 3

[0041]PBT 45%, ABS 44%, activated compatibilizer 10%, processing lubricant polysiloxane 0.4%, phenolic antioxidant 1076 (CIBA company) 0.3%, light stabilizer 2-(2 hydroxyl-3, 5-di-tert-amylphenyl)-benzotriazole light stabilizer (CYTEC company) 0.3%; Mix evenly and put into the hopper of twin-screw extruder, extrude through melting, granulate, fully plasticize, melt, Composite, then extruded, drawn, cooled, pelletized, dried and packaged; the processing technology is as follows: twin-screw extruder at 230°C in the first zone, 235°C in the second zone, 235°C in the third zone, 235°C in the fourth zone, and 235°C in the fifth zone Zone 235°C, Zone 6 230°C, Zone 7 230°C, Zone 8 230°C; screw speed controlled at 350 rpm; residence time 2-10min.

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Abstract

The invention discloses a PBT/ABS alloy material and a method for manufacturing an automobile bumper. The compositions by weight percentage of the PBT/ABS alloy material are: 45 to 70 percent of PBT, 20 to 45 percent of ABS, 1 to 10 percent of active compatibilizer, 0.1 to 0.6 percent of lubricant, 0.1 to 1.2 percent of chemical inhibitor and 0.1 to 0.6 percent of light stabilizer. The PBT/ABS alloy material has high surface activity, excellent low temperature toughness, excellent dimension stability and high thermal distortion temperature, and other indexes all reaching or exceeding the prior automobile material standards. The bumper molded by the material has high surface activity and strong bonding force with oil paint, can undergo direct spray painting without flame treating, have high thermal distortion temperature and stable dimension, can not cause obvious distortion due to vast-scale variance of the temperature, have smooth and bright surface, good spray painting effect and short baking time, and improve the production efficiency. Moreover, the material can be directly dyed into the same color with a metal part according to the appearance demand of the part, thereby the spray painting technique is saved and the spray painting free effect is achieved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PBT / ABS alloy material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a relatively new type of thermoplastic engineering plastic developed and industrialized by Celanese Corporation of the United States in the 1970s. It has fast crystallization speed, excellent electrical properties and changes with temperature and humidity. Small; good weather resistance, suitable for outdoor use, and excellent chemical resistance; outstanding electrical properties, is an ideal material for electronics and electrical industries, widely used in electronics, electrical, automobiles, household appliances, electric tools, sports equipment, etc. It is also one of the fastest growing engineering plastics in the last decade. [0003] At present, both foreign and domestic bumper materials are mainly composite materials of polypropylene pl...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L55/02C08K5/13C08K5/3475B29B9/12B29C47/92B29C48/40B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/625B29C48/9185B29C2948/92561B29C2948/9259B29C2948/92885B29C2948/92895
Inventor 徐东贺永李茂林
Owner SHENZHEN KEJU NEW MATERIAL
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