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Ionization modified ethylene-acrylic acid copolymer and preparation method thereof, and ionic polymer intermediate membrane and application thereof

A technology of ionic polymers and copolymers, applied in chemical instruments and methods, films/sheets without carriers, layered products, etc.

Active Publication Date: 2022-01-28
盛鼎高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ionization modification method provided by the present invention will not cause the problems of increased haze and decreased hydrothermal resistance

Method used

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  • Ionization modified ethylene-acrylic acid copolymer and preparation method thereof, and ionic polymer intermediate membrane and application thereof
  • Ionization modified ethylene-acrylic acid copolymer and preparation method thereof, and ionic polymer intermediate membrane and application thereof
  • Ionization modified ethylene-acrylic acid copolymer and preparation method thereof, and ionic polymer intermediate membrane and application thereof

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preparation example Construction

[0040] In the present invention, the preparation method of the ion-type polymer intermediate film comprises the following steps: extruding, stretching, pelletizing and flow-forming the ionized modified ethylene-acrylic acid copolymer described in the above technical solution in sequence film extension to obtain the ionic polymer intermediate film.

[0041] In the present invention, the thickness of the ionomer intermediate film is preferably 0.35-2.5 mm, more preferably 0.75-1.5 mm.

[0042] The present invention also provides the application of the ionic polymer intermediate film described in the above technical solution in laminated safety glass.

[0043]The present invention also provides a laminated safety glass. The laminated safety glass comprises the ionomer interlayer and a glass layer, and the glass layer is arranged on both sides of the ionomer interlayer.

[0044] In order to further illustrate the present invention, the ionized modified ethylene-acrylic acid copol...

Embodiment 1

[0054] Get commercially available ethylene-methacrylic acid copolymer, wherein the content of methacrylic acid structural unit is 15wt%, makes intermediate film 1 after forming film through extrusion casting process, the thickness of gained intermediate film 1 is 1.2mm, pulls The tensile strength is 23.7Mpa. Combine the above-mentioned interlayer film 1 with two pieces of glass, and then use vacuum bag degassing to prepare laminated safety glass through a lamination furnace process to obtain sample 1, and further test the light transmittance, haze, impact resistance and hydrothermal resistance of sample 1 , and the results are listed in Table 1.

[0055] Get above-mentioned ethylene-methacrylic acid copolymer, wherein the content of methacrylic acid structural unit is 15wt%, add zinc oxide powder (the amount of the added zinc ion is 15% of the molar content of carboxylic acid functional group), place in kneader, Mix at 20°C for 0.5h, heat up to 115°C for ionization reaction, ...

Embodiment 2

[0071] Get commercially available ethylene-methacrylic acid copolymer, wherein the content of methacrylic acid structural unit is 7.0wt%, add zinc acetylacetonate (the amount of zinc acetylacetonate added is 5% of the molar content of carboxylic acid functional group), place kneading In the machine, mix at 20°C for 0.5h, heat up to 140°C and melt, add zinc hydroxide powder (the amount of zinc ions added is 30% of the molar content of carboxylic acid functional groups), carry out ionization reaction, react for 5h, extrude and pelletize , after being further formed into a film by extrusion casting process, the thickness of the obtained interlayer film is 1.2mm, and the tensile strength is 31.1MPa. After being combined with two pieces of glass, the laminated safety glass is prepared by vacuum bag degassing and lamination furnace process. , the sample is smooth and free of bubbles, its light transmittance reaches 90.4%, and its haze is 1.05%. figure 1 This is a photo of the impact...

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Abstract

The invention provides an ionization modified ethylene-acrylic acid copolymer and a preparation method thereof, and an ionic polymer intermediate membrane and application thereof, and belongs to the field of safety glass. According to the invention, zinc acetylacetonate is adopted to assist zinc hydroxide or zinc oxide in ionizing modification of an ethylene-acrylic acid polymer, wherein the zinc acetylacetonate and the ethylene-acrylic acid copolymer have good compatibility, so that the zinc acetylacetonate effectively serves as a transmission bridge of zinc ions, and ionizing modification of the ethylene-acrylic acid copolymer is achieved; the reaction is simple and easy to implement, and the zinc acetylacetonate is stable in property, small in dosage and extremely good in compatibility with the copolymer, so that negative effects on the performance of the material are avoided; the ionic polymer prepared by the modification method disclosed by the invention can be used for preparing a novel intermediate membrane and is further applied to the production of laminated safety glass; and the produced laminated safety glass is good in transparency, low in haze and resistant to water and heat.

Description

technical field [0001] The invention relates to the technical field of safety glass, in particular to an ionized modified ethylene-acrylic acid copolymer, a preparation method thereof, an ion-type polymer intermediate film and its application. Background technique [0002] Laminated glass is a kind of safety glass, which is usually composed of two or more pieces of glass with one or more layers of organic polymer interlayer film, and then undergoes special high temperature pre-pressing (or vacuuming) and high temperature and high pressure. After processing, the glass and the organic polymer interlayer film are permanently bonded together as a composite glass product. The organic polymer interlayers commonly used according to different application scenarios mainly include EVA interlayer (ethylene-vinyl acetate copolymer), PVB interlayer (polyvinyl butyral), SGP interlayer (ethylene-methacrylic acid ionic copolymer) ), TPU interlayer film (polyurethane elastomer). SGP lamina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/44C08F210/02C09J7/10C09J123/26B32B17/10C03C27/12
CPCC08F8/44C09J7/10C09J123/26B32B17/10743C03C27/10B32B2307/306C08F210/02
Inventor 王超张辉其他发明人请求不公开姓名
Owner 盛鼎高新材料有限公司
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