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EVA (Ethylene vinyl-acetate) film and manufacturing method thereof

A technology of film and ethylene, applied in the field of polymer compound composition, can solve the problems of low damping, poor sound insulation performance and shockproof performance, and inability to have good strength, transparency and damping performance, etc., to achieve outstanding tensile strength and improve Transparency, improvement of sound insulation performance and shockproof performance

Active Publication Date: 2013-07-17
GUANGDONG ANDELI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing EVA film focuses on the simple bonding function, or only gives the laminated glass a variety of colors and appearances, but its strength, transparency or damping performance are relatively insufficient, that is to say, it cannot have good strength, Transparency and damping properties, especially low damping results in poor sound insulation and shock resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In the present embodiment, the manufacture method of EVA film comprises the following steps successively:

[0032] (1) Prepare the following raw materials in proportion by weight: ethylene-vinyl acetate copolymer 69% (49% of which is EVA produced by Mitsui Chemicals Co., Ltd. with the brand EV150, and its vinyl acetate content is 33%; the other 20% is Mitsui The EVA produced by Chemical Co., Ltd. with the grade EV170 has a vinyl acetate content of 33%), polyolefin plastomer 30% (both POP with the grade AFFINITY EG8200G produced by Dow Chemical), and 0.2% silane coupling agent (both γ-methacryloxypropyltrimethoxysilane), light stabilizer 0.5% (both polysuccinic acid (4-hydroxy-2,2,6,6-tetramethyl-1-piperidine Ethanol) esters), antioxidant 0.3% (both tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester);

[0033] (2) Stir the ethylene-vinyl acetate copolymer, silane coupling agent, light stabilizer and antioxidant until they are evenly mixed t...

Embodiment 2

[0038] In the present embodiment, the manufacture method of EVA film comprises the following steps successively:

[0039] (1) Prepare the following raw materials in proportion by weight: ethylene-vinyl acetate copolymer 89% (29% of which is EVA produced by Mitsui Chemicals Co., Ltd. with the brand name EV150, and its vinyl acetate content is 33%; the other 60% is Mitsui The grade of EVA produced by Chemical Co., Ltd. is EV170, and its vinyl acetate content is 33%), polyolefin plastomer 10% (both POP with the grade of AFFINITY EG8200G produced by Dow Chemical), and 0.4% of silane coupling agent (both N-phenyl-γ-aminopropyltrimethoxysilane), light stabilizer 0.2% (both polysuccinic acid (4-hydroxy-2,2,6,6-tetramethyl-1-piperidine Ethanol) esters), antioxidant 0.4% (both tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester);

[0040] (2) Stir the ethylene-vinyl acetate copolymer, silane coupling agent, light stabilizer and antioxidant until they are e...

Embodiment 3

[0045] In the present embodiment, the manufacture method of EVA film comprises the following steps successively:

[0046] (1) Prepare the following raw materials in proportion by weight: ethylene-vinyl acetate copolymer 74.3% (all are EVA produced by Mitsui Chemicals Co., Ltd. with the brand name EV170, and its vinyl acetate content is 33%), polyolefin plastomer 25% ( Both are POP produced by Dow Chemical with the brand name AFFINITY EG8100G), 0.3% silane coupling agent (both are γ-methacryloxypropyl trimethoxysilane), 0.3% light stabilizer (both are polybutylene Diacid (4-hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol) ester), antioxidant 0.1% (both tetrakis(β-(3,5-di-tert-butyl-4 -Hydroxyphenyl) propionate) pentaerythritol ester);

[0047] (2) Stir the ethylene-vinyl acetate copolymer, silane coupling agent, light stabilizer and antioxidant until they are evenly mixed to obtain a mixed material;

[0048] (3) Add the polyolefin plastomer and the mixed material obtained in...

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PUM

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Abstract

The invention provides an EVA (Ethylene vinyl-acetate) film used for laminated glass which is prepared from raw materials in percentage by weight as follows: 69-89.5% of ethylene-vinyl acetate copolymer, 10-30% of polyolefin plastomer, 0.2-0.4% of a silane coupling agent, 0.2-0.5% of an optical stabilizer and 0.1-0.4% of an antioxidant. The content of vinyl acetate in the ethylene-vinyl acetate copolymer is 32-33%. The EVA film consists of an upper layer, a middle layer and a lower layer, wherein the upper and lower layers are prepared from the ethylene-vinyl acetate copolymer, the silane coupling agent, the optical stabilizer and the antioxidant. The middle layer is prepared from the polyolefin plastomer. The EVA film provided by the invention is not only high in strength and transparency, but also good in sound insulating and shockproof performance. The invention further provides a preparation method of the EVA film, and the process is simple and easy to control.

Description

technical field [0001] The invention relates to a polymer compound composition, in particular to an EVA film used for laminated glass, and a manufacturing method of the EVA film. Background technique [0002] Due to its good optical properties, rigidity and low cost, glass has been more and more widely used in the fields of building decoration and automobiles. However, the single piece of glass has the disadvantages of being fragile and having poor impact resistance, and it is very easy to hurt people after the glass is broken. [0003] In order to maintain the high transparency and visibility of the glass while improving the impact strength of the glass, laminated glass came into being. Laminated glass is a composite glass formed by bonding two or more pieces of glass together with an interlayer film. Since the glass is still stuck together by the interlayer film after being broken by an external force, it will not cause harm to the human body. At the same time, the interl...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J123/08B32B27/08B32B27/30B32B27/32
Inventor 王毅刚
Owner GUANGDONG ANDELI NEW MATERIALS CO LTD
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