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Dedicated styrene material for spoiler of automobile and preparation method thereof

A technology of styrene and special materials, which is applied in the field of materials, can solve problems such as poor blow molding performance, low melt strength, and poor dimensional stability of resin compositions, and achieve good dimensional stability, high melt strength, and improved The effect of vacuum formability

Inactive Publication Date: 2010-10-20
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been proposed in the literature to increase the rubber content to improve the impact resistance of ABS resins. However, due to the high linear expansion coefficient of rubber, the resulting resin composition has poor dimensional stability.
U.S. Patent No. 4,430,478, 5,605,963 and 5,696,204 propose that the polymer particles produced in the emulsion polymerization process are mixed with the polymer particles produced in the bulk polymerization process to improve the impact strength of the material, but the melt strength of the material obtained by this method is relatively low. Low, poor blow molding performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 45Kg of emulsion method ABS resin, 5Kg of dispersant, 0.1Kg of bisphenol A and 0.1Kg of IG-168 into a high-speed mixer and stir for 20 minutes before discharging to obtain mixture A.

[0034] Add 50Kg of heat-resistant agent from the main feeding port of the twin-screw extruder, add the mixture A from the side feeding port of the twin-screw extruder, extrude and granulate to obtain heat-resistant masterbatch, and the barrel temperature of the extruder is 240-300°C, the screw speed is 180-600 rpm.

[0035] 35Kg acrylonitrile-butadiene-styrene copolymer 1 (Mw=400,000-600,000), 47Kg acrylonitrile-butadiene-styrene copolymer 2 (Mw=10-200,000), 15Kg heat-resistant masterbatch , 3Kg ethylene-acrylate copolymer, 0.1Kg bisphenol A, 0.1Kg IG-168, put into a high-speed mixer and stir for 20 minutes, then discharge to obtain mixture B. The mixture B is added from the main feeding port of the twin-screw extruder, extruded and granulated to obtain the final product, the barrel ...

Embodiment 6

[0052] A preparation method of special material for styrene-based automobile tail, the method comprising the following steps:

[0053] (1) Preparation of heat-resistant masterbatch:

[0054] (a) 10 parts by weight of binary random copolymers of 30 parts by weight of ABS resin produced by conventional emulsion grafting method, 10 parts by weight of dispersant ethylene-methacrylate and 0.5 parts by weight of antioxidant (1010) are put into high-speed mixer Mixture A was obtained after being stirred in the middle for 5 minutes; the average particle diameter range of the ABS resin was 200nm, the polybutadiene rubber content was 15%, the relative density was 1.02, and the melting temperature was 190°C;

[0055] (b) Add 60 parts by weight of the terpolymer of maleic anhydride, methyl methacrylate and styrene from the main feeding port of the twin-screw extruder, and mix A from the side of the twin-screw extruder Add it into the feeding port, extrude and granulate, the temperature o...

Embodiment 7

[0061] A preparation method of special material for styrene-based automobile tail, the method comprising the following steps:

[0062] (1) Preparation of heat-resistant masterbatch:

[0063] (a) 3 weight parts of binary random copolymers and 0.1 weight parts of antioxidant (1076) of ABS resin 60 weight parts produced by conventional emulsion grafting method, dispersant ethylene-butyl acrylate are put into high-speed mixer Mixture A was obtained after being stirred in the middle for 30 minutes; the average particle diameter range of the ABS resin was 600nm, wherein the polybutadiene rubber content was 20%, the relative density was 1.05, and the melting temperature was 220°C;

[0064] (b) 30 parts by weight of the terpolymer of the heat-resistant agent N-phenylmaleimide and the terpolymer of maleic anhydride and styrene are added from the main feeding port of the twin-screw extruder, and the mixture A is added from the side feeding port of the twin-screw extruder, extruded and ...

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Abstract

The invention relates to a dedicated styrene material for the spoiler of an automobile and a preparation method thereof. The styrene material comprises the following components by weight part: 20 to 70 parts of acrylonitrile-butadiene-styrene (ABS) copolymer, 20 to 70 parts of acrylonitrile-styrene copolymer, 1 to 10 parts of ethylene-acrylate copolymer, 5 to 40 parts of heat-resisting master batch and 0.05 to 0.5 part of antioxidant. The preparation method comprises the following steps: loading the components into a high-speed mixer, mixing for 5 to 30 minutes and discharging to obtain a mixture B; carrying out extrusion pelletization on the mixture B by a twin-screw extruder to obtain the product, wherein the barrel temperature of the extruder is 180 to 280 DEG C, and the rotating speed of the screws is 180RPM to 600RPM. Compared with the prior art, the invention has the characteristics of high melt strength, good balance of longitudinal and horizontal extension, good dimensional stability, high heat deflection temperature and easy fabrication.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a styrene-based special material for automobile tail fins and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, the domestic and foreign demand for blow molding materials for automobile rear fins has risen sharply. The automotive industry usually requires that the car tail can be placed in an environment of 95-105°C for 24-168 hours without deformation. The car tail obtained by blow molding with ordinary ABS cannot meet this high heat resistance requirement. If heat-resistant ABS is used for blow molding, on the one hand, it is difficult to plasticize the heat-resistant monomer with a high glass transition temperature in the material; Poor molding. [0003] At present, there are no relevant reports on blow-molding grade heat-resistant ABS in China. Most of the reports have improved the rigidity, surface appearan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L25/12C08L23/08C08L33/04C08L35/06C08L25/16C08J3/22B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 邱卫美丁宗勤董建廷李荣群周霆辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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