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Noise reduction PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy material and preparation method thereof

An alloy material and noise reduction technology, which is applied in the field of polymers, can solve the problems of inability to reduce noise and silence, and achieve the effects of good appearance, simple preparation process, and improved impact toughness

Active Publication Date: 2017-05-31
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared alloy material can be used in automotive interior parts (such as instrument panels), household appliances and other components, but the alloy material cannot play the role of noise reduction

Method used

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  • Noise reduction PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy material and preparation method thereof
  • Noise reduction PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy material and preparation method thereof
  • Noise reduction PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0033] Examples 1-5 PC / ABS alloy material for noise reduction and sound elimination, the components and contents of the PC / ABS alloy material are shown in Table 1; wherein, the weight-average molecular weight of the PC resin is 22000g / mol and the glass transition temperature is 140°C; the relative weight-average molecular weight of ABS resin is 125,000g / mol, wherein the weight percentage content of butadiene is 25%, the weight percentage content of acrylonitrile is 25%, and the weight percentage content of styrene is 50%; the weight percentage of high damping silicone rubber The average molecular weight is 140000g / mol, the rubber particle size is 400-500nm, and the damping coefficient is 1.4; the antioxidant is Irganox 168 of Ciba Company; the lubricant is commercially available N,N-ethylene bisstearic acid amide.

[0034] High damping silicone rubber is to put silicone rubber, damping agent polybutanone oxime silane, and white carbon black in the internal mixer at a weight rat...

Embodiment 6

[0047] This embodiment relates to a noise-reducing and sound-absorbing PC / ABS alloy material, and its preparation method is as follows:

[0048]a. Take the corresponding raw materials according to the following components and weight:

[0049]

[0050] b. First mix PC resin, ABS resin, high damping silicone rubber, antioxidant and lubricant in a mixing mixer;

[0051] c. Then, the mixture is blended and granulated by a twin-screw extruder to obtain noise-reducing and sound-absorbing PC / ABS alloy particles. The barrel temperature of the extruder is 220-270° C., and the screw speed is 300-700 rpm.

[0052] The relative molecular weight of PC resin is 18000g / mol, and its glass transition temperature is 140°C. It is a PC resin synthesized by transesterification method;

[0053] The relative molecular weight of the ABS resin is 120000g / mol, wherein the weight percentage content of butadiene is 20%, the weight percentage content of acrylonitrile is 26%, and the styrene weight per...

Embodiment 7

[0063] This embodiment relates to a noise-reducing and sound-absorbing PC / ABS alloy material, the preparation method of which is the same as that of Embodiment 6, except that:

[0064] Prepare materials according to the following components and parts by weight:

[0065]

[0066] The relative molecular weight of PC resin is 32000g / mol, and its glass transition temperature is 150°C. It is a PC resin synthesized by phosgene method;

[0067] ABS resin is a graft copolymer composed of acrylonitrile-butadiene-styrene, and its relative molecular weight is 185000g / mol, wherein the weight percentage content of butadiene is 30%, the weight percentage content of acrylonitrile is 25%, and the weight percentage content of styrene The percentage content is 45%;

[0068] High damping silicone rubber molecular weight is 200000g / mol, rubber particle size is 800-1000nm, damping coefficient is 0.8, and preparation method is identical with embodiment 7;

[0069] Antioxidant is the compound o...

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Abstract

The invention relates to a noise reduction PC / ABS (polycarbonate / acrylonitrile-butadiene-styrene) alloy material and a preparation method thereof. The alloy material comprises, by weight, 40-75 parts of polycarbonate resin, 15-55 parts of acrylonitrile-styrene-butadiene copolymer resin, 5-20 parts of high damping silicone rubber, 0.1-1 part of antioxidants and 0.1-1 part of lubricants. Raw materials are added into a mixer and mixed, obtained mixture is fed into a double-screw extruder through a weightless feeder and blended and granulated by the double-screw extruder to obtain the noise reduction PC / ABS alloy material. By the aid of the high damping silicone rubber, viscoelastic characteristics of PC / ABS alloys are improved, internal friction of macromolecular segments is caused by mechanical energy of noise when plastic products have noise risks, so that the mechanical energy is converted into heat energy to be dissipated, the noise risks of the plastic products are reduced, and noise can be reduced. Besides, the impact toughness of the PC / ABS alloys is improved by the high damping silicone rubber serving as a toughening agent.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a PC / ABS alloy material for noise reduction and sound elimination and a preparation method thereof. Background technique [0002] PC / ABS is a kind of polymer alloy widely used in automobile interiors, but its parts will produce "squeak" noise due to friction during assembly and long-term use. The current common solutions mainly include coating silicone oil, non-woven fabrics, etc. during the assembly process. Although such methods can play the role of lubrication and noise reduction in the short term, the manufacturing process is cumbersome and the cost is high. The noise reduction effect is difficult to guarantee. [0003] In addition, there is also a method of reducing the surface friction coefficient of the PC / ABS alloy to achieve noise reduction of the PC / ABS alloy. A common method to reduce the surface friction coefficient of PC / ABS alloy. For example, adding silicone oil lubrican...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08L83/04
CPCC08L55/02C08L69/00C08L2205/03C08L83/06C08L83/08
Inventor 鲁加荣李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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