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Preparation method for high-strength acrylic reflective membrane supporting layer resin

A technology of acrylic and reflective film, applied in the field of resin, can solve the problems of poor acid, alkali and solvent resistance, low temperature flexibility and smoke resistance, poor weather resistance of PU hot melt adhesive, etc., to improve leveling, high resistance High and low temperature constriction, shortening drying time effect

Active Publication Date: 2014-02-05
浙江海川安全防护用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the support layer of high-strength acrylic reflective film produced in China is processed by PU hot melt adhesive. The disadvantage is that PU hot melt adhesive has poor long-term weather resistance, poor acid and alkali resistance, poor solvent resistance, low temperature flexibility and poor smoke resistance.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] A method for preparing a high-strength grade acrylic reflective film support layer resin, comprising the following steps:

[0029] (1), synthetic hard acrylic resin

[0030] The components of the hard acrylic resin include acrylic resin system monomers, initiators and medium-boiling point solvents;

[0031] During preparation, weigh 505.0 g of ethyl methacrylate monomer, 200.5 g of special functional group acrylic acid monomer (alkoxylated nonylphenol acrylate), 120.0 g of acrylic acid monomer, 25.0 g of initiator azobisisobutyronitrile, solvent Use 1100.0 g of a mixture of ethyl acetate and toluene with a mass ratio of 2:1;

[0032] In the jacketed reaction kettle equipped with a condensation reflux device and a drop-adding device with flow control, first add 40% of the total monomer weight, that is, 330.2g of mixed monomers, raise the temperature to 90°C for solvent reflux, and add the total monomers dropwise at 95°C. 60% weight of mixed monomer is 495.3g; the react...

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Abstract

The invention discloses a preparation method for a high-strength acrylic reflective membrane supporting layer resin. The preparation method comprises the following steps: (1) synthesis of a hard acrylic resin; (2) synthesis of a soft acrylic resin; and (3) blending of components. According to the invention, a formula for the resin is reasonable; a used cellulose acetate butyrate resin can improve levelability of the supporting layer resin, inhibit sagging and cavity shrinkage to reduce surface defects and shorten drying time; a prepared high-strength acrylic reflective membrane has good resilience, tensile strength, oil resistance, resistance to contractility at high and low temperature, water resistance, acid and alkali resistance and salt fog resistance.

Description

technical field [0001] The invention belongs to the technical field of resins, and relates to a preparation method of a reflective film resin, in particular to a preparation method of a high-strength grade acrylic reflective film support layer resin. Background technique [0002] At the beginning of the 20th century, Dong Qifang, a Chinese-American doctor, invented and developed reflective film technology, which was applied to the manufacturing of road traffic signs. Its long-distance visibility under lighting at night is widely used in the road traffic safety industry. [0003] Reflective film is an optical film with a special structure that uses optical principles to retroreflect light back to the light source. It is composed of a film layer with good weather resistance, a layer of tiny glass beads, a reflective layer, an adhesive layer and a peeling layer. [0004] According to my country's latest road traffic reflective film GB / T18833-2012 standard, high-strength refl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/10C08L33/08C08L1/14C08K3/22C08F220/18C08F220/06C08F220/14
Inventor 池有钢郭平生缪凡
Owner 浙江海川安全防护用品有限公司