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Scratch-resistant high-gloss spray-free pc/asa alloy material and preparation method thereof

An alloy material and spray-free technology, which is applied in the field of polymer molding and polymer blending, can solve the problems of fogging on the high-gloss surface, poor dispersion, poor compatibility between scratch-resistant agents and material substrates, etc., to achieve Improve compatibility, strengthen dispersion, and solve the effect of fogging problem

Active Publication Date: 2018-06-22
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor compatibility between the scratch resistance agent and the material substrate, the dispersion is poor, and it is easy to cause fogging on the high-gloss surface

Method used

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  • Scratch-resistant high-gloss spray-free pc/asa alloy material and preparation method thereof
  • Scratch-resistant high-gloss spray-free pc/asa alloy material and preparation method thereof
  • Scratch-resistant high-gloss spray-free pc/asa alloy material and preparation method thereof

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Experimental program
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preparation example Construction

[0025] The preparation method of scratch-resistant high-gloss spray-free PC / ASA alloy material in the described embodiment and comparative example comprises the following steps:

[0026] S1. After mixing all the components through the mixer, feed them from the main feeding port of the twin-screw extruder;

[0027] S2. Melt extrusion and granulation to obtain scratch-resistant high-gloss PC / ASA alloy material without spraying;

[0028] A special die is added to the die of the twin-screw extruder. One end of the special die is provided with an inlet and the other end is provided with an outlet. The inlet is connected to the die of the twin-screw extruder; the diameter of the inlet is larger than the diameter of the outlet.

[0029] The barrel temperature of the twin-screw extruder is successively set to 200°C, 240°C, 260°C, 260°C, 260°C, 240°C, 240°C, 250°C, 260°C and 260°C; 500-800rpm.

[0030] The length of the special die is 120mm, the outlet size is 1mm×50mm, and the inlet...

Embodiment 1

[0042] A scratch-resistant high-gloss spray-free PC / ASA alloy material and a preparation method thereof, the method comprising the following steps:

[0043] (1) Weigh each component by weight: PC: 70, ASA: 10, scratch resistance agent: 18, compatibilizer: 5, carbon black masterbatch: 2; antioxidant 1010 0.1, antioxidant 168 0.1, lubricant 0.3,

[0044] (2) Feed all the raw materials from the main feeding port, melt and extrude at 200-260°C, the screw extruder rotates at 500rpm, melt and extrude, and granulate to obtain the product.

[0045] A special die is added to the die of the twin-screw extruder to make the flow channel generate a strong stretching flow, which is composed of a continuous flow channel whose diameter changes from large to small.

Embodiment 2

[0047] A scratch-resistant high-gloss spray-free PC / ASA alloy material and a preparation method thereof, the method comprising the following steps:

[0048](1) Weigh each component by weight: PC: 50, ASA: 25, anti-scratch agent: 20, carbon black masterbatch: 2; compatibilizer: 3; antioxidant 1010 0.1, antioxidant 168 0.1, lubricant 0.3

[0049] (2) Feed all the raw materials from the main feeding port, melt and extrude at 200-260°C, the screw extruder rotates at 500rpm, melt and extrude, and granulate to obtain the product.

[0050] A special die is added to the die of the twin-screw extruder to make the flow channel generate a strong stretching flow, which is composed of a continuous flow channel whose diameter changes from large to small.

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Abstract

The invention relates to a scratch-resistant high-gloss spraying-free PC / ASA alloy material and a preparation method thereof. The alloy material is prepared from, by weight, 50-70 parts of PC resin, 10-40 parts of ASA resin, 5-20 parts of a scratch-resistant agent, 0.1-1 part of a compatilizer, 0.1-1 part of an antioxidant, 0.1-1 part of a lubricant and 2-5 parts of carbon black masterbatch. The preparation method of the alloy includes the following steps that all the components are mixed through a stirrer and then fed in from a main feeding port of a twin-screw extruder; melt extrusion and granulation are performed, and the alloy is obtained, wherein a special mouth mold is additionally arranged on a mouth mold of the twin-screw extruder. According to the scratch-resistant high-gloss spraying-free PC / ASA alloy material and the preparation method thereof, with the compatilizer, the compatibility of the scratch-resistant agent and the system is improved; by introducing the special mouth mold, a strong flow field is obtained, dispersion of the scratch-resistant agent is enhanced, the problem of fogging caused by introduction of the scratch-resistant agent is solved, and the scratch-resistant high-gloss spraying-free PC / ASA alloy material is obtained.

Description

technical field [0001] The invention belongs to the fields of polymer blending and polymer molding processing, and in particular relates to a scratch-resistant, high-gloss, spray-free PC / ASA alloy material and a preparation method thereof. Background technique [0002] PC / ASA alloy materials are widely used in the fields of automobiles and electronic products due to their excellent impact resistance, heat resistance and weather resistance. For example, in the patent document CN 103408912 A, a PC / ASA alloy and its preparation method are disclosed. The alloy contains the following components: 60-80 parts of polycarbonate, 5-15 parts of acrylonitrile-styrene-acrylate, and 1-5 parts of compatibilizer, 3-6 parts of toughening agent, 8-15 parts of flame retardant, 0.2-0.5 parts of flame retardant synergist, 0.2-2 parts of light stabilizer; wherein the weight average molecular weight of the polycarbonate 30,000 to 50,000, and a density of 1.18-1.20g / cm3. The acrylonitrile-styrene-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L51/00C08L33/12C08L25/14C08L23/06C08K13/02C08K3/04C08K5/134C08K5/526C08J3/22B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704C08J3/226C08J2369/00C08J2423/06C08L69/00C08L2205/035C08L2205/08C08L51/003C08L33/12C08L25/14C08L23/06C08K13/02C08K3/04C08K5/1345C08K5/526
Inventor 柏莲桂李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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