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Polycarbonate/acrylonitrile-acrylic ester-styrene (PC/ASA) alloy and preparation method thereof

An acrylate and polycarbonate technology, applied in the field of polymer composite materials, can solve problems such as poor weather resistance, and achieve the effects of convenient operation and control, excellent dimensional stability, and excellent balance.

Active Publication Date: 2014-06-04
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] There are many known methods for preparing PC plastic alloys to improve these shortcomings, wherein PC / ABS plastic alloys are the most common method, such as US Patent No. 3130177, US No. 4624986, etc., by blending ABS with PC. A low-cost PC / ABS plastic alloy composition with high impact toughness and improved fluidity, but this PC / ABS plastic alloy also has the disadvantage of poor weather resistance

Method used

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  • Polycarbonate/acrylonitrile-acrylic ester-styrene (PC/ASA) alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of ASA masterbatch: 25 parts of the first ASA resin, 10 parts of basalt fiber, 0.2 parts of antioxidant tris(2,4-di-tert-butylphenyl) phosphite were fully mixed in a high-speed mixer for 5 minutes , using twin-screw extrusion melt kneading and blending method, the twin-screw extruder temperature from the feed port to the extrusion die is 170 ° C, 200 ° C, 210 ° C, 220 ° C, 230 ° C, the host speed is 20 Hz , make fiber-filled ASA masterbatch, make fiber-filled ASA masterbatch, standby;

[0044] (2) 35.2 parts of ASA masterbatch prepared in step (1) were bonded with 40 parts of polycarbonate PC (weight average molecular weight 20000g / mol), 25 parts of second ASA resin, 0.1 part of compatibilizer maleic anhydride Branch AS, 0.6 parts of light stabilizer 2-hydroxyl-4-n-octyloxybenzophenone are fully mixed, adopt the melting and kneading blending method of screw extruding, from feeding port to extrusion die head temperature is respectively 200°C, 220°C, 230°...

Embodiment 2

[0046] (1) Preparation of ASA masterbatch: 15 parts of the first ASA resin, 4 parts of carbon fiber, 1 antioxidant tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester After fully mixing in the high-speed mixer for 3 minutes, the twin-screw extrusion melt kneading and blending method is adopted. The temperature of the twin-screw extruder from the feed port to the extrusion die is 190°C, 220°C, 240°C, 240°C, 250°C, the speed of the host machine is 40 Hz, and the fiber-filled ASA masterbatch is made, and the fiber-filled ASA masterbatch is prepared for use;

[0047] (2) 20 parts of ASA masterbatch prepared in step (1) were bonded with 85 parts of polycarbonate PC (weight average molecular weight: 30000g / mol), 15 parts of second ASA resin, 0.5 parts of compatibilizer maleic anhydride ABS, 0.4 parts of light stabilizer N,N'-bis(2,2,2,6-tetramethyl-4-piperidinyl)-1,6-hexamethylenediamine are fully mixed, and extruded by screw The melting kneading and b...

Embodiment 3

[0049] (1) Preparation of ASA masterbatch: 5 parts of the first ASA resin, 7 parts of glass fiber, 0.5 parts of antioxidant β-(4-hydroxy-3,5-di-tert-butylphenyl) propanoic acid n-octadecyl After the alcohol ester is fully mixed in the high-speed mixer for 4 minutes, the twin-screw extrusion melt kneading and blending method is adopted. The temperature of the twin-screw extruder from the feed port to the extrusion die is 180 ° C, 190 ° C, 230 ° C, 230 ° C ℃, 240 ℃, the host speed is 30 Hz, make fiber-filled ASA masterbatch, make fiber-filled ASA masterbatch, spare;

[0050] (2) Combine 12.5 parts of ASA masterbatch prepared in step (1) with 60 parts of polycarbonate PC (weight average molecular weight 40000g / mol), 5 parts of second ASA resin, 0.3 parts of compatibilizer maleic anhydride Branched styrene, 0.2 parts of light stabilizer bis-2,2,6,6-tetramethylpiperidinyl sebacate are fully mixed, and the melting kneading blending method of screw extrusion is adopted, from the feed...

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Abstract

The invention belongs to the field of polymer composites materials, and relates to a polycarbonate / acrylonitrile-acrylic ester-styrene (PC / ASA) alloy and a preparation method thereof. The PC / ASA alloy is prepared from the following components in parts by weight: 40-85 parts of PC, 5-25 parts of second ASA resin, 0.1-0.5 part of a compatilizer, 0.2-0.6 part of a light stabilizer and 9.2-36 parts of ASA master batch. The coefficient of linear expansion of the alloy material provided by the invention can be reduced to be 2.8*10<-5> / DEG C to the minimum from 6.5*10<-5> / DEG C of a pure PC system, and the tensile strength can be 170MPa; meanwhile, the preparation method of the composite material is simple in production process, convenient to operate and control and stable in quality. A prepared product is a PC resin composition with excellent size stability, flowability and thermal resistance, and is particularly excellent in balance between the thermal resistance and flowability of a granular material.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and relates to a polycarbonate (PC) / acrylonitrile-acrylate-styrene (ASA) alloy and a preparation method thereof. Background technique [0002] Polycarbonate (PC) resin has the advantages of high heat resistance, good transparency, high gloss, good toughness, etc., but it has poor fluidity and difficult molding; the product is sensitive to gaps and prone to stress cracking; it is not resistant to solvents and is expensive. [0003] Acrylonitrile-acrylate-styrene (ASA) resin is an impact-modified resin polymerized from styrene, acrylonitrile and acrylate terpolymer. Since ASA resin introduces acrylic rubber without double bonds, only light with a wavelength of less than 300nm will have an aging effect on it, so it has better weather resistance. Its dyed products do not require coating protection, and can replace painted ABS outdoors. When used directly, it can maintain the stability of m...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L51/00C08K13/04C08K7/14C08K7/06C08K7/10C08K5/3435C08K5/132C08J3/22B29C47/92B29C48/92
CPCB29B7/46B29B7/72B29B7/90B29C48/04B29C48/40B29C48/92B29C2948/92695B29C2948/92761B29C2948/9298
Inventor 赵陈嘉
Owner HEFEI GENIUS NEW MATERIALS
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