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TPV (thermoplastic vulcanizate) thermoplastic elastomer composite sheet and manufacturing method thereof

A thermoplastic elastomer and composite sheet technology, applied in chemical instruments and methods, electronic equipment, synthetic resin layered products, etc., can solve the problems of low speaker life, easy aging of speakers, easy adhesion of rewinding, etc., and achieve low density , Blister molding is superior, and the effect of improving the elasticity ratio of the product

Active Publication Date: 2016-06-08
浙江亿铭新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of TPV thermoplastic elastomer composite sheet that is not easy to age and not easy to stick when rewinding, aiming at the problems that the loudspeaker of the prior art material is easy to age, makes the life of the speaker low, and is easy to stick when rewinding , TPV thermoplastic elastomer composite sheet production method

Method used

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  • TPV (thermoplastic vulcanizate) thermoplastic elastomer composite sheet and manufacturing method thereof
  • TPV (thermoplastic vulcanizate) thermoplastic elastomer composite sheet and manufacturing method thereof
  • TPV (thermoplastic vulcanizate) thermoplastic elastomer composite sheet and manufacturing method thereof

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Embodiment 1

[0025] 1) The mass percentage composition of the middle layer is composed of EPDM rubber 40%, softener 31%, polypropylene 16%, vulcanizing agent 3%, black masterbatch 0%, talcum powder 10%; surface layer mass percentage composition: It is composed of 50% EPDM rubber, 9.2% softener, 35% polypropylene, 2.4% vulcanizing agent, 2.5% black masterbatch, 0.1% anti-aging agent, and 0.8% anti-blocking agent;

[0026] 2) Granulation: According to the proportion of the middle layer, first take EPDM rubber and softener for plasticizing, then add polypropylene, vulcanizing agent, black masterbatch, and talcum powder for pre-dispersion to obtain the middle layer mixture, and mix the middle layer The material is put into a twin-screw granulator for dynamic vulcanization and extruded into middle layer particles. The main engine speed of the granulator is 35 rpm, the feeding speed is 33 rpm, and the melt pressure is between 5 MPa; according to the surface layer The mass ratio is to take EPDM r...

Embodiment 2

[0032] The components and process parameters of the middle layer and the surface layer are shown in Table 1. The mass percentage components of the vulcanizing agent are: bismaleimide 40%, octyl phenolic resin 35%, di-tert-butyl peroxide cumene 25. Antiblocking agent adopts the polymer of methacrylate; All the other are the same as embodiment 1. The thickness of the prepared sheet is 0.5mm

Embodiment 3

[0034] The components and process parameters of the middle layer and the surface layer are shown in Table 1. The mass percentage components of the vulcanizing agent are: bismaleimide 30%, octylphenolic resin 20%, di-tert-butyl peroxide cumene 50%, antiblocking agent adopts the polymer of methacrylate; All the other are with embodiment 1. The thickness of the prepared sheet is 0.4mm

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Abstract

In order to overcome the defects of short service life of the loudspeaker and high adhesion tendency during rewinding due to the high aging tendency of the loudspeaker prepared from the material in the prior art, the invention relates to a TPV (thermoplastic vulcanizate) thermoplastic elastomer composite sheet with the advantages of low aging tendency and low adhesion tendency during rewinding and a manufacturing method thereof. In the TPV thermoplastic elastomer composite sheet, the middle layer is composed of 40-63% of ethylene propylene diene copolymer, 20-45% of softening agent, 10-30% of polypropylene, 2-5% of vulcanizing agent, 0-5% of black color master batch and 3-10% of talcum powder; the surface layer is composed of 43-65% of ethylene propylene diene copolymer, 7.5-30% of softening agent, 23-45% of polypropylene, 2-5% of vulcanizing agent, 0-5% of black color master batch, 0-2% of anti-aging agent and 0.5-1% of antiblocking agent. Due to the addition of the antiblocking agent, the composite sheet has low adhesion tendency during rewinding. The TPV adopts the surface layer raw material of the composite sheet, and thus, also has the antiblocking property.

Description

[0001] This application is a divisional application of a patent application with the application number CN201310187851 and the application date being 2013.05.17, and the name is "TPV, TPV thermoplastic elastomer composite sheet, and method for making TPV thermoplastic elastomer composite sheet". technical field [0002] The invention relates to a TPV thermoplastic elastomer composite sheet and a manufacturing method of the TPV thermoplastic elastomer composite sheet. Background technique [0003] At present, most of the loudspeaker materials on the market are rubber or PVC rubber. The loudspeakers made of this material are easy to age. Due to aging, inertial deformation and moiré will occur, which will affect the sound and quality of the loudspeaker, thereby affecting the use of the loudspeaker. In addition, the use of the above-mentioned materials Sheets tend to stick after rewinding. Contents of the invention [0004] The purpose of the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/12C08L61/06C08L83/04C08L33/10C08K3/34C08K5/3415C08K5/14B32B25/04B32B25/08B32B25/14B32B27/18B32B27/32B32B33/00B29B9/10B29C47/06
CPCB29B9/10B29C48/21B29L2009/00B32B25/042B32B25/08B32B25/14B32B27/18B32B27/32B32B33/00B32B2250/24B32B2250/40B32B2270/00B32B2307/306B32B2307/536B32B2307/552B32B2307/554B32B2307/582B32B2307/714B32B2307/7145B32B2307/72B32B2457/00C08L23/12C08L23/16C08L2205/02C08L2205/03C08L61/06C08K3/34C08K5/3415C08K5/14C08L83/04C08L33/10
Inventor 毛丛敏林咸雄
Owner 浙江亿铭新材料科技有限公司
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