Granulation method for high-polished injection-molded piece resin

A technology of injection molded parts and resin, which is applied in the granulation field of high-gloss injection molded resins, which can solve the problems of limiting ABS development space, heat resistance, poor weather resistance, poor heat resistance, etc., and achieves reduced spraying links, good gloss and high, The effect of excellent weather resistance

Inactive Publication Date: 2014-05-28
ANHUI LAND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although ABS has the advantages of acrylonitrile, butadiene and styrene, it also has its shortcomings, such as poor heat resistance, weather resistance, and easy combustion, especially the poor heat resistance of ABS, which seriously limits The development space of ABS

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of granulation method that is used for high-gloss injection molded part resin, described granulation method comprises the steps:

[0017] (1) Material preparation: 60 parts of polymethyl methacrylate; 20 parts of ABS graft powder; 20 parts of styrene-acrylonitrile copolymer resin; 15 parts of compatibilizer (styrene-maleic anhydride SMA); Agent (tris(2,4-di-tert-butylphenol) phosphite) 0.5 part; lubricant (ethylene bisstearamide) 0.5 part;

[0018] (2) Blending: Dry the above components and stir them evenly;

[0019] (3) Granulation: Mechanical blending is carried out in a co-rotating twin-screw extruder and combined with a cold pelletizer. The screw speed of the twin-screw extruder is 120r / min; the temperature of the first stage is 180 ℃ , the temperature of the second section is 210°C, the temperature of the third section is 230°C, the temperature of the fourth section is 230°C, the temperature of the fifth section is 230°C, the temperature of the sixth sectio...

Embodiment 2

[0026] A granulation method for high-gloss injection molded parts resin, the parts by weight of each component are: 60 parts of polymethyl methacrylate; 20 parts of ABS graft powder; 20 parts of styrene-acrylonitrile copolymer resin; Agent (dicumyl peroxide DCP) 15 parts; antioxidant (tris(2,4-di-tert-butylphenol) phosphite) 0.5 part; lubricant (ethylene bisstearamide) 0.5 part.

[0027] The preparation method and test conditions are the same as in Example 1, and the performance test is as follows: the tensile strength is 53.3 MPa, the elongation at break is 9%, the gloss test result is 81, and the Rockwell hardness is 109.

Embodiment 3

[0029] A granulation method for high-gloss injection molding resin, the parts by weight of each component are: 70 parts of polymethyl methacrylate; 30 parts of ABS graft powder; 30 parts of styrene-acrylonitrile copolymer resin; compatible Agent (dicumyl peroxide DCP) 20 parts; antioxidant (tris(2,4-di-tert-butylphenol) phosphite) 1 part; lubricant (ethylene bisstearamide) 1 part.

[0030] The preparation method and test conditions are the same as in Example 1, and the performance test is as follows: the tensile strength is 56.3 MPa, the elongation at break is 7%, the gloss test result is 80, and the Rockwell hardness is 101.

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Abstract

The invention discloses a granulation method for high-polished injection-molded piece resin. The granulation method comprises the following steps: weighing 20-70 parts of polymethyl methacrylate, 10-30 parts of styrene-acrylonitrile copolymer resin, 10-20 parts of a compatilizer, 0.1-1 part of an antioxidant and 0.1-1 part of a lubricating agent; uniformly stirring all the components in parts by weight after all the components are dried; mechanically blending the components in a synclastic double-screw extruder, and granulating the material after the material is cooled and dried through a cold granulator. The granulation technology is simple; special equipment is not needed, and the quality is controllable; when resin particles are used in an injection-molded piece, an injection-molded piece product has excellent weather resistance, higher surface hardness, high glossiness, high brightness and the like; the glossiness of a product is more than 80 degrees (60 degrees) according to a corresponding test standard; the tensile strength is more than 50MPa, and the Rockwell hardness is more than 100.

Description

technical field [0001] The invention belongs to the field of thermoplastic resin materials, and in particular relates to a granulation method for high-gloss injection molding resin. Background technique [0002] Plastic parts made of thermoplastic resin materials are increasingly used in various industries. Due to safety and environmental considerations, spray-free plastic parts have increasingly become the leading direction of the plastic parts market. If a material with scratch-resistant and spray-free surface is developed, then injection molded products do not need to be sprayed, which not only improves production efficiency, saves labor and reduces production costs, but also reduces solvent volatilization, so it is more environmentally friendly. [0003] ABS is an acrylonitrile-butadiene-styrene terpolymer. Early ABS resin was prepared by blending method, generally blending 70 parts of styrene-acrylic copolymer with 30 parts of nitrile rubber; currently, the industriall...

Claims

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Application Information

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IPC IPC(8): C08L33/12C08L25/12B29B9/06B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704B29C2948/92761B29C2948/92885B29C2948/92895B29C2948/92904B29C2948/9298
Inventor 李正祥华文荣殷成楼张永刚
Owner ANHUI LAND GRP
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