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Preparation method of microporous foamed polymer-based automobile damping mat

A microcellular foaming and polymer technology, applied in the field of damping material preparation, can solve problems such as poor damping material performance, and achieve the effects of good processing performance, good elasticity and low production cost

Inactive Publication Date: 2018-05-22
ANHUI ZHICHENG ELECTROMECHANICAL SPARE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are also some relatively new methods of preparing damping materials. For example, in the Chinese patent with the publication number CN1594436, a polymer hot-melt damping material and its preparation method are disclosed. The damping material prepared by this patent is also polymer. , so the performance of the damping material is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Adopt TPU40kg, LLDPE 1kg, calcium carbonate 70kg, antimony trioxide / polybrominated diphenyl ether (mass ratio 1:1 composite) 5kg, glycerol monopalmitate, dodecyl sulfopropyl betaine, carbon black (mass ratio 1:1:3 compound) 10kg, β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.1kg, oleic acid amide 0.1kg, polyethylene wax 0.1kg , the above materials are mixed uniformly in a high mixer and then added to a twin-screw extruder for melt blending and extrusion, wherein the screw speed of the extruder is 300rpm, and the temperature of the screw from the feed port to the machine head is 50°C, 50°C, 150°C, 160°C, 165°C, 170°C, then put the extruded sample into the autoclave, and pass through supercritical CO 2 , so as to obtain the microcellular thermoplastic polyurethane elastomer composite material, and obtain the required microcellular foamed polymer-based automobile damping pad through subsequent processing and molding. The noise reduction performance and fl...

Embodiment 2

[0031] Adopt TPU50kg, LLDPE 5kg, calcium carbonate 80kg, antimony trioxide / polybrominated diphenyl ether (mass ratio 1:1 composite) 15kg, glycerol monopalmitate, dodecyl sulfopropyl betaine, carbon black (mass ratio 1:1:3 compound) 5kg, β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.5kg, oleic acid amide 0.5kg, polyethylene wax 0.5kg , the above materials are mixed uniformly in a high mixer and then added to a twin-screw extruder for melt blending and extrusion, wherein the screw speed of the extruder is 300rpm, and the temperature of the screw from the feed port to the machine head is 50°C, 50°C, 150°C, 160°C, 165°C, 170°C, then put the extruded sample into the autoclave, and pass through supercritical CO 2 , so as to obtain the microcellular thermoplastic polyurethane elastomer composite material, and obtain the required microcellular foamed polymer-based automobile damping pad through subsequent processing and molding. The noise reduction performance and fl...

Embodiment 3

[0033] Adopt TPU40kg, LLDPE 5kg, calcium carbonate 70kg, antimony trioxide / polybrominated diphenyl ether (mass ratio 1:1 composite) 15kg, glycerol monopalmitate, dodecyl sulfopropyl betaine, carbon black (mass ratio 1:1:3 compound) 5kg, β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.5kg, oleic acid amide 0.5kg, polyethylene wax 0.5kg , the above materials are mixed uniformly in a high mixer and then added to a twin-screw extruder for melt blending and extrusion, wherein the screw speed of the extruder is 300rpm, and the temperature of the screw from the feed port to the machine head is 50°C, 50°C, 150°C, 160°C, 165°C, 170°C, then put the extruded sample into the autoclave, and pass through supercritical CO 2, so as to obtain the microcellular thermoplastic polyurethane elastomer composite material, and obtain the required microcellular foamed polymer-based automobile damping pad through subsequent processing and molding. The noise reduction performance and fla...

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PUM

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Abstract

The invention discloses a preparation method of a microporous foamed polymer-based automobile damping mat, and belongs to the technical field of preparation of a damping material. The mat comprises, according to a weight part ratio, 40-50 parts of thermoplastic polyurethane elastomer (TPU), 1-5 parts of low-density polyethylene (LDPE), 70-80 parts of calcium carbonate,5-10 parts of a fire retardant, 1-5 parts of an antistatic agent, 0.1-0.5 part of an anti-oxidant, 0.1-0.5 part of oleamide, and 0.1-0.5 part of polyethylene wax. The preparation method comprises: uniformly mixing the raw materials in a high-speed mixer, adding the obtained mixture in a double-screw extruder for melt extrusion, putting the extruded object sample strips in an autoclave, leading supercritical CO2 in to obtain microporous foamed thermoplastic polyurethane elastomer composite material, and performing following processing moulding to obtain a required microporous foamed polymer-based automobile damping mat. The preparation method is low in production cost and good in processing performance, and doesn't produce any toxic or harmful substances in a preparation process. A microporous structure is establishedin a material substrate, so that the sound insulation effect of the polymer-based damping mat is improved.

Description

technical field [0001] The invention relates to a preparation method of a microporous foamed polymer-based automobile damping pad, which belongs to the technical field of damping material preparation, in particular to a preparation method of a microporous foamed polymer-based automobile damping pad. Background technique [0002] Thermoplastic elastomers (including TPU, SEBS, POE, etc.) have good elasticity, shock absorption and noise reduction effects, and can still maintain good elasticity at low temperatures, effectively overcoming the hardness and brittleness of asphalt-based damping rubber sheets at low temperatures. insufficient. Especially TPU, that is, thermoplastic polyurethane elastomer, thermoplastic polyurethane elastomer is cross-linked by intermolecular hydrogen bonds or slightly cross-linked between macromolecular chains. As the temperature increases or decreases, these two cross-linked structures are reversible. In the molten state or solution state, the inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L23/08C08K13/02C08K3/26C08K5/20C08K3/22C08K5/06C08K3/04
CPCC08K2003/265C08L75/04C08L2201/02C08L2201/04C08L2203/14C08L2205/03C08L2207/04C08L2207/066C08L23/0815C08L23/06C08K13/02C08K3/26C08K5/20C08K3/2279C08K5/06C08K3/04
Inventor 方举何斌韦章年段启松
Owner ANHUI ZHICHENG ELECTROMECHANICAL SPARE PARTS
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