PC/ABS alloy with excellent weather resistance and preparation method of PC/ABS alloy

A technology of alloy and performance, applied in the field of polymer engineering plastics and its molding processing, can solve the problems of not being able to achieve good weather resistance stably, and achieve excellent mechanical properties, easy demoulding, and easy extrusion and granulation

Active Publication Date: 2015-03-11
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a PC/ABS alloy with excellent weather resistance and its preparation method in order to overcome the defects in the above-mentione

Method used

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  • PC/ABS alloy with excellent weather resistance and preparation method of PC/ABS alloy
  • PC/ABS alloy with excellent weather resistance and preparation method of PC/ABS alloy
  • PC/ABS alloy with excellent weather resistance and preparation method of PC/ABS alloy

Examples

Experimental program
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Example

[0031] Examples 1 to 5:

[0032] A method for preparing PC / ABS alloy with excellent weather resistance. The method includes the following steps: according to the component ratio in Table 1, after fully mixing in a high-speed mixer, it is exported, and then put into a screw machine for extrusion and granulation. The rotating speed of the screw machine is 300-500rpm and the temperature is 225-255°C, and the product is obtained.

[0033] Table 1 The content of each component by weight

[0034]

[0035] Remarks: ①It means that you can choose the combination from A1, A2, A3 according to the design requirements.

[0036] The material composition in Table 1 is as follows:

[0037] Component A1 is PC, the weight average molecular weight of polycarbonate is 32,000, produced by LG Chem;

[0038] Component A2 is PC, the weight average molecular weight of polycarbonate is 22,000, produced by Hunan Petrochemical;

[0039] Component A3 is PC, the weight average molecular weight of polycarbonate is 18,...

Example Embodiment

[0056] Example 6:

[0057] In this embodiment, the PC / ABS alloy with excellent weather resistance includes the following components and parts by weight: 81 parts of PC, 25 parts of ABS, 5 parts of toughening agent, 0.08 parts of primary antioxidant, 0.2 parts of auxiliary antioxidant, 0.5 parts of anti-UV additives and 0.4 parts of lubricants.

[0058] The weight-average molecular weight of PC is 17000 and the glass transition temperature is 145~150℃. The weight-average molecular weight of ABS is 140,000. Among them, the weight percentage of butadiene is 15%. Acrylonitrile The weight percentage content of styrene is 22%, and the weight percentage content of styrene is 63%.

[0059] Among them, the toughening agent is an acrylic toughening agent, the main antioxidant is a hindered phenolic antioxidant, and the auxiliary antioxidant is bis(2-cumyl, 4-(1,1,3,3-tetramethyl )-Butyl) pentaerythritol diphosphite, the anti-UV assistant is a benzotriazole anti-ultraviolet light absorber, an...

Example Embodiment

[0064] Example 7:

[0065] In this embodiment, the PC / ABS alloy with excellent weather resistance includes the following components and parts by weight: 48 parts of PC, 8 parts of ABS, 5 parts of toughening agent, 0.2 parts of main antioxidant, 0.5 parts of auxiliary antioxidant, 0.1 part of anti-UV additive, 0.5 part of lubricant.

[0066] The weight average molecular weight of PC is 35000 and the glass transition temperature is 145~150℃. The weight average molecular weight of ABS is 140,000. Among them, the weight percentage of butadiene is 24%. Acrylonitrile The weight percentage content of styrene is 26%, and the weight percentage content of styrene is 50%.

[0067] Among them, the toughening agent is a mixed toughening agent of ethylene-methyl acrylate and ethylene-butyl acrylate in a mass ratio of 2:3, the main antioxidant is a hindered phenol antioxidant, and the auxiliary antioxidant is three (2 , 4-Di-tert-butylphenyl) phosphite, anti-UV additives are benzotriazole anti-ul...

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Abstract

The invention relates to a PC/ABS alloy with excellent weather resistance. The PC/ABS alloy is prepared from the following components in parts by weight: 31-85 parts of PC, 8-58 parts of ABS, 1-5 parts of a toughening agent, 0.05-0.5 part of a main antioxidant, 0.05-0.5 part of an auxiliary antioxidant, 0.1-0.8 part of an anti-UV additive and 0.1-0.5 part of a lubricant. The PC/ABS alloy is prepared by putting the components into a high-speed mixing machine, sufficiently mixing, discharging out, further putting into a screw extruder, and extruding to pellet when controlling the rotation speed of the screw extruder to be 300-500rpm and the temperature to be 225-255 DEG C, so as to obtain a product. Compared with the prior art, the PC/ABS alloy is relatively good in synergistic effect as the toughening agent, the antioxidants and the anti-UV additive are used together, the weather resistance of the PC/ABS alloy is improved, the brittleness of the material is also effectively degraded, the toughness of the material is improved, and excellent mechanical property of the material is stilled maintained for a long time under the condition that the requirements on the weather resistance of the PC/ABS alloy are relatively high.

Description

Technical field [0001] The invention belongs to the field of polymer engineering plastics and its forming and processing, and relates to a polymer alloy and a preparation method thereof, in particular to a PC / ABS alloy with excellent weather resistance and a preparation method thereof. Background technique [0002] Polycarbonate (Polycarbonate, hereinafter referred to as PC) has excellent impact resistance, heat resistance, good dimensional stability, electrical insulation properties, and has the characteristics of non-toxic and low water absorption, and can operate in a wide temperature range. Used within the same, and the light transmittance can reach 90%, known as the title of "transparent metal", widely used in electronics, electrical, machinery, automobiles, aerospace, construction, office and household products and other fields. However, due to the high molecular rigidity and steric hindrance, its melting temperature is high (270-320℃), it is difficult to manufacture large-...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08K5/527B29B9/06
CPCC08K2201/014C08L69/00C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L55/02C08L51/04C08K5/527C08K5/1345C08K5/3475C08K5/103C08L33/00C08K5/098C08K5/20C08L23/0869C08K5/526C08L83/04C08L33/20C08L91/06
Inventor 李文强李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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