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Super silence material and preparation method thereof

An ultra-quiet, barium sulfate technology, applied in the field of material preparation, can solve problems such as high melt flow rate, failure to meet standard requirements, and processing technology limitations

Inactive Publication Date: 2013-01-02
浙江仁智股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN102002183 proposes a polypropylene-modified sound-insulating material. This patent adopts a modified polypropylene to obtain a sound-insulating material to ensure good dimensional stability and small warping deformation of the product. However, the patent has the following defects: The melt flow rate of the patented product is too high, which cannot meet the standard requirements, the processing technology is limited, and the Vicat softening point is also low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this example, we use the following steps to prepare ultra-quiet materials:

[0025] Add 17.5kg of 2000-mesh barium sulfate, 17.5kg of 800-mesh barium sulfate, 9.1kg of 2000-mesh calcium carbonate, and 9.1kg of 800-mesh calcium carbonate into a high-mixing pot at 140°C, and stir at a high speed of 600 rpm Add 1.26kg of aluminate, after surface activation, add 14kg of polypropylene, 0.7kg of anti-aging agent titanium dioxide, 0.84kg of antioxidant 1010, stir evenly, and then through the combination of leading meshing and rotor disk kneading, continuous The special twin-screw extruder with dispersed thread combination design extrudes the strands, air cooling, pelletizing temperature is set at 150°C, and the speed is set at 200 rpm, so that the ultra-quiet material with high sound-absorbing effect and high Vicat of the present invention can be obtained. The sound absorption effect is below 12db, and the Vicat is above 152°C.

Embodiment 2

[0027] In this example, we use the following steps to prepare ultra-quiet materials:

[0028] Add 20kg of 2000-mesh barium sulfate, 15kg of 1250-mesh barium sulfate, 9.1kg of 2000-mesh calcium carbonate, and 9.1kg of 1250-mesh calcium carbonate into a high-mixing pot at 140°C, and add them under high-speed stirring at 750 rpm Titanate 1.26kg, after surface activation, add 14kg of polypropylene, 0.7kg of anti-aging agent titanium dioxide, 0.84kg of antioxidant 1010, stir evenly after mixing, and then pass through a combination of leading meshing, rotor disc kneading, and continuous dispersion thread The special twin-screw extruder designed in combination extrudes the strands, air-cools, and pelletizes at a temperature of 180°C and a speed of 180 rpm to obtain the ultra-quiet material with high sound-absorbing effect and high Vicat of the present invention. The sound absorption effect is below 12db, and the Vicat is above 152°C.

Embodiment 3

[0030] In this example, we use the following steps to prepare ultra-quiet materials:

[0031] Add 10kg of 3000-mesh barium sulfate, 25kg of 1250-mesh barium sulfate, 8.2kg of 3000-mesh calcium carbonate, and 10kg of 800-mesh calcium carbonate into a high-mixing pot at 140°C, and add silane under high-speed stirring at 900 rpm 1.26kg, after surface activation, add 14kg of polypropylene, 0.7kg of anti-aging agent titanium dioxide, 0.84kg of antioxidant 1010, stir evenly, and then use the design of leading meshing, rotor disk kneading combination, and continuous dispersion thread combination The special twin-screw extruder extrudes the strands, air-cools, and pelletizes at a temperature of 220°C and a speed of 400 rpm to obtain the ultra-quiet material with high sound-absorbing effect and high Vicat of the present invention. The sound absorption effect is below 12db, and the Vicat is above 152°C.

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Abstract

The invention relates to a super silence material and a preparation method thereof. The super silence material comprises the components by weight percent: 30-65% of barium sulfate, 10-30% of calcium carbonate, 10-40% of polypropylene, 0.5-2% of surface modification agent, 0.5-4% of anti-ageing agent and 0.1-2% of antioxidant. The preparation method comprises the steps of: evenly mixing all the components in a high mixing pot, and extruding by a double-screw extruder with the design of front guide meshing and rotor disc kneading and continuous dispersion capability; and carrying out air cool on brace, and chopping, wherein the temperature is set to150-220 DEG C and the screw rotation speed is set to180-400r / min. Compared with the silence material on the market, the super silence material disclosed by the invention has the pipe ring stiffness reaching up to more than 14KN / M2, the vicat softening point of more than 152 DEG C and the silencing effect of less than 45db. Thus, the super silence material meets the requirement of a silence pipe for the sound absorption effect.

Description

technical field [0001] The invention relates to an ultra-quiet material and a preparation method of the material. Background technique [0002] Traditionally, building drainage pipes are made of cast iron, PVC and other materials, which have problems such as mechanical strength, shrinkage, sound insulation effect and low softening point. The existence and constraints of many factors make the market urgently need an alternative product that can overcome the above problems and cover the advantages of the above two pipes. [0003] Compared with cast iron drainage pipes and PVC drainage pipes, ultra-quiet pipes have the following significant advantages. They have excellent performances such as quietness, shock resistance, flame retardancy, high temperature resistance, corrosion resistance, aging resistance, and non-toxicity. It is a green, environmentally friendly and energy-saving product. It is suitable for high-rise office buildings, apartments, hotels, restaurants, hospital...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/04C08K9/06C08K3/30C08K3/26B29C47/92B29B9/06B29C48/92
CPCB29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 郭林陈波王曦冯海军徐正华杨建华
Owner 浙江仁智股份有限公司