Production process of EVA (Ethylene Vinyl Acetate) film for flame-retardant laminated glass

A technology of laminated glass and production technology, applied in applications, adhesives, household appliances, etc., can solve problems such as fire hazards, and achieve the effects of high impact resistance and destructiveness, high hardness, and high strength

Active Publication Date: 2021-12-10
安徽省阳明达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

However, EVA is easy to burn and has potential fire hazards. Improving its fire resistance is a necessary prerequisite for the preparation and application of EVA.

Method used

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  • Production process of EVA (Ethylene Vinyl Acetate) film for flame-retardant laminated glass
  • Production process of EVA (Ethylene Vinyl Acetate) film for flame-retardant laminated glass
  • Production process of EVA (Ethylene Vinyl Acetate) film for flame-retardant laminated glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] DesmophenA165, its hydroxyl content is 2.6%, CG-602, N-(β-aminoethyl)-γ-aminopropylmethyldimethoxysilane, CG-560γ-aminopropyl from Jiangxi Chenguang New Materials Co., Ltd. Triethoxysilane. The EVA compound is COSMOPLENE TPC KA-31 ethylene-vinyl acetate copolymer 68phr, maleic acid 6phr, Hubei Qiaofeng TPI-40 trans-1,4-polyisoprene rubber 5 parts by weight , Henan Zhengtong Food Polyglycerol Ricinoleate 2.5phr, Huangshan Xinfeng Chemical MTA5R Hydroxyl Modified Vinyl Resin 2phr, Dicumyl Peroxide 0.4phr, 2,6-tert-butyl-p-cresol 0.2phr, in First add trans-1,4-polyisoprene rubber, ethylene-vinyl acetate copolymer and hydroxyl-modified vinyl acetate into the reaction kettle with agitator, heat to 120°C, and continue to add 2,6-di tert-butyl-p-cresol, dicumyl peroxide and polyglycerol ricinoleate, stir evenly, continue to add maleic acid, continue to heat up to 130°C, and react for 2 hours to obtain the EVA mixture; One step, mix the composite flame retardant evenly and th...

Embodiment 2

[0030] The mass ratio of the composite flame retardant to the plasticizer solution containing 1.5% by mass fraction of the silane coupling agent and the EVA compound was 23:6:50, and the temperature parameters of each section of the twin-screw extruder were set at 170°C, 175°C, 180°C, 185°C, 180°C, 175°C, screw speed 100r / min, feeding speed 10r / min, EVA mixture is EVACOSMOPLENE TPC KA-31 ethylene-vinyl acetate copolymer 75phr in parts by weight , Huangshan Xinfeng Chemical MTA5R Hydroxyl Modified Vinyl Resin 5phr, Maleic Acid 8phr, Dicumyl Peroxide 1.5phr, Henan Zhengtong Food PGPR Polyglycerol Ricinoleate 3.1phr, Hubei Qiaofeng TPI-40 Trans-1,4-polyisoprene rubber 7phr, 2,6-tert-butyl p-cresol 0.3phr, first add trans-1,4-polyisoprene in the reactor with agitator Rubber, ethylene-vinyl acetate copolymer and hydroxy-modified vinyl acetate resin, heated to 140 ° C, continue to add 2,6-di-tert-butyl p-cresol, dicumyl peroxide and polyglycerol ricinoleate , stir evenly, continue ...

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Abstract

The invention discloses a production process of an EVA (Ethylene Vinyl Acetate) film for flame-retardant laminated glass, and belongs to the technical field of glass interlayer glue. The EVA film in the laminated glass has the advantages of high hardness, high strength, high collision resistance and high damage resistance, the high-altitude safety of the laminated glass is improved, the curability and weather resistance are good, the creep deformation caused by thermal expansion and cold contraction of the laminated glass is prevented, the stability and the service life of an interlayer are guaranteed, and flat glass is transparent and flame-retardant and still has good light transmission. The fireproof glass is still transparent in the initial stage of a fire, flames can be seen through the glass, and the fire site and the fire danger degree can be judged. Along with fire spreading and expanding, indoor temperature is increased, the interlayer is heated to expand and foam, a transparent substance is gradually expanded and converted into a non-transparent porous substance to form a very thick fireproof heat-insulating layer, and the fireproof heat-insulating protection effect is achieved. The excellent fireproof heat-insulating performance is achieved, and the application environment and temperature range is wide.

Description

technical field [0001] The invention belongs to the technical field of glass interlayer glue, and in particular relates to a production process method of EVA film for flame-retardant laminated glass. Background technique [0002] The substrate of laminated glass used 5mm flat glass in the early stage, and later reduced the thickness to 3.5mm~4mm. Now the automotive glass uses 1.8mm, 2.0mm or 2.3mm thin glass to achieve the effect of thin plate and light weight. The diaphragm can be made of polyvinyl butyral (PVB), which is a polymer compound produced by the action of polyvinyl alcohol and butyraldehyde, containing 65%-78% polyvinyl butyral, 32%-19% polyvinyl alcohol and no More than 3% polyvinyl acetate. Usually PVB diaphragm is colorless or yellowish translucent, with two thicknesses of 0.76mm and 0.38mm. Laminated film with a 0.38mm thick film is called ordinary laminated (laminated) glass, while a 0.76mm film is used on automotive glass. The bonding force between this f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/08B29C48/28B29B13/06C09J123/08C09J109/00C09J11/08C09J11/04B29L7/00
CPCB29C48/08B29C48/28B29B13/06C09J123/0853C09J11/08C09J11/04C08L2205/035C08L2201/02B29L2007/00C08L9/00C08L27/06C08L71/00C08L33/14C08K5/34928
Inventor 陈武杰周正发徐晓敏张华
Owner 安徽省阳明达新材料科技有限公司
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