Special polypropylene composite material for reducing noise of air conditioner and preparation method of special polypropylene composite material

A polypropylene and special material technology, applied in the field of reducing the noise of air conditioner polypropylene composite material and its preparation, can solve the problems of poor low temperature impact, large molding shrinkage, high melting point, and achieve the effect of reducing the linear expansion coefficient and good dimensional stability

Inactive Publication Date: 2016-12-21
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the melting point is as high as 167°C, which has the advantages of heat resistance and corrosion resistance. In addition, polypropylene has a low density and is the lightest general-purpose plastic. However, PP has poor low-temperature impact resistance and large molding shrinkage.

Method used

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  • Special polypropylene composite material for reducing noise of air conditioner and preparation method of special polypropylene composite material
  • Special polypropylene composite material for reducing noise of air conditioner and preparation method of special polypropylene composite material
  • Special polypropylene composite material for reducing noise of air conditioner and preparation method of special polypropylene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Take various raw materials respectively by formula ratio;

[0029]

[0030] (2) Add the above-mentioned polypropylene resin, barium sulfate, ethylene-octene copolymer, antioxidant, lubricant, nucleating agent, and graft compatibilizer into a high-speed mixer and mix at high speed for 2 minutes;

[0031] (3) Put the mixed components into a parallel twin-screw extruder to melt, and at the same time side-feed chopped glass fiber ECS305K-4.5 to extrude and pelletize. The barrel temperature of the extruder is: 200 ° C, the screw speed The temperature is 500r / min, the melt pressure is 1.6MPa; the vacuum degree is -0.04~-0.05MPa, that is, the special polypropylene material for reducing air-conditioning noise is obtained.

Embodiment 2

[0033] (1) Take various raw materials respectively by formula ratio;

[0034]

[0035] (2) Add the above-mentioned polypropylene resin, barium sulfate, ethylene-octene copolymer, antioxidant, lubricant, nucleating agent, and graft compatibilizer into a high-speed mixer and mix at high speed for 2 minutes;

[0036] (3) Put the mixed components into the parallel twin-screw extruder to melt, and at the same time, side-feed the chopped glass fiber ECS305K-4.5mm, extrude and granulate, the barrel temperature of the extruder is: 190 ° C, the screw The rotational speed is 400r / min, and the melt pressure is 2.0MPa; the vacuum degree is -0.05~-0.06MPa, that is, the special polypropylene material for reducing air-conditioning noise can be obtained.

Embodiment 3

[0038] (1) Take various raw materials respectively by formula ratio;

[0039]

[0040]

[0041] (2) Add the above-mentioned polypropylene resin, barium sulfate, ethylene-octene copolymer, antioxidant, lubricant, nucleating agent, and graft compatibilizer into a high-speed mixer and mix at high speed for 2 minutes;

[0042] (3) Put the mixed components into the parallel twin-screw extruder to melt, and at the same time, side-feed the chopped glass fiber ECS305K-4.5mm, extrude and granulate, the barrel temperature of the extruder is: 200 ° C, the screw The rotational speed is 600r / min, and the melt pressure is 2.0MPa; the vacuum degree is -0.06~-0.07MPa, that is, the special polypropylene material for reducing air-conditioning noise can be obtained.

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Abstract

The invention discloses a special polypropylene composite material for reducing noise of an air conditioner and a preparation method of the special polypropylene composite material. The special polypropylene composite material is prepared from 50-60 parts of polypropylene, 15-30 parts of barium sulfate, 15-30 parts of chopped glass fibers, 5-10 parts of a grafting compatilizer, 5-10 parts of an ethylene-octene copolymer, 0.1-0.5 part of a nucleator, 0.5-1.0 part of an antioxidant, 0.5-1.0 part of a lubricant and 0-3 parts of other additives. The special polypropylene composite material has the characteristics of high intensity, high tenacity, low linear expansion coefficient and low noise. The material can be used for a chassis of a split wall hanging type air conditioner, so that the noise value of the air conditioner is notably reduced, and the use comfortableness of the air conditioner is improved.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a polypropylene composite material for reducing air-conditioning noise and a preparation method thereof. Background technique [0002] Polypropylene is a thermoplastic resin produced by the polymerization of propylene, usually a translucent colorless solid, odorless and non-toxic. Highly crystalline due to regular structure. Therefore, the melting point is as high as 167°C, which has the advantages of heat resistance and corrosion resistance. In addition, polypropylene has a low density and is the lightest general-purpose plastic. However, PP has poor low-temperature impact resistance and large molding shrinkage. [0003] With the improvement of people's living standards, air conditioners have become a must-have for family life. They have the functions of adjusting indoor temperature and humidity and purifying air, bringing comfort to people, but also have the problem of noise ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/08C08L23/06C08L51/06C08K13/04C08K7/14C08K3/30C08K5/526C08K5/134
CPCC08L23/14C08L2205/035C08L2205/08C08L2205/24C08L23/12C08L23/0815C08L23/06C08L51/06C08K13/04C08K7/14C08K2003/3045C08K5/526C08K5/1345
Inventor 邢纪普范保林宋钰徐元元任东方
Owner ORINKO NEW MATERIAL CO LTD
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