Tackifier capable of improving gluing property of EVA hot melt adhesive

A tackifier, hot melt adhesive technology, applied in the direction of adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of general thermal stability, large amount of tackifier, and decreased adhesion Fast speed and other problems, to achieve the effects of good thermal stability, improved adhesion, improved fluidity and diffusivity

Inactive Publication Date: 2018-12-11
ANHUI SOYA DECORATIVE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the common problem is that the amount of tackifier is large, the thermal stability is average, and the adhesiveness decreases rapidly with time and temperature changes.

Method used

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  • Tackifier capable of improving gluing property of EVA hot melt adhesive
  • Tackifier capable of improving gluing property of EVA hot melt adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A tackifier for improving the bonding performance of EVA hot-melt adhesives, made of the following components in parts by weight: 80 parts of bisphenol A epoxy resin, 25 parts of polydimethylsiloxane, and 1.4 parts of sodium methacrylate , 0.3 parts of nano zinc oxide, 1.0 parts of silane coupling agent, 0.3 parts of sodium laurate, 1.5 parts of triethanolamine, 0.6 parts of boron nitride, 12 parts of xylene, 5 parts of sodium bicarbonate aqueous solution, 18 parts of sodium chloride solution, 120 parts of ethanol, the preparation method comprises the following steps:

[0019] (1) Put nano-zinc oxide in a high-speed mixer, add triethanolamine and sodium laurate at 1200 rpm, stir for 20 minutes, increase the speed to 1800 rpm, and add silane coupling agent at the same time and stir for 15 minutes, Then heat treatment at 200°C for 2 hours to obtain pretreated nano-zinc oxide;

[0020] (2) In an ice-water bath at 0°C, add bisphenol A epoxy resin and polydimethylsiloxane i...

Embodiment 2

[0028] A tackifier for improving the bonding performance of EVA hot-melt adhesives, made of the following components in parts by weight: 82 parts of bisphenol A epoxy resin, 27 parts of polydimethylsiloxane, and 1.5 parts of sodium methacrylate , 0.35 parts of nano zinc oxide, 1.1 parts of silane coupling agent, 0.4 parts of sodium laurate, 1.55 parts of triethanolamine, 0.7 parts of boron nitride, 13 parts of xylene, 6 parts of sodium bicarbonate aqueous solution, 19 parts of sodium chloride solution, 135 parts of ethanol, the preparation method comprises the following steps:

[0029] (1) Put nano-zinc oxide in a high-speed mixer, add triethanolamine and sodium laurate at 1250 rpm, stir for 25 minutes, increase the speed to 1900 rpm, and add silane coupling agent at the same time and stir for 18 minutes, Then heat treatment at 215°C for 2.5 hours to obtain pretreated nano-zinc oxide;

[0030] (2) In an ice-water bath at 2°C, add bisphenol A epoxy resin and polydimethylsiloxa...

Embodiment 3

[0038] A tackifier for improving the bonding performance of EVA hot-melt adhesives, made of the following components in parts by weight: 85 parts of bisphenol A epoxy resin, 28 parts of polydimethylsiloxane, and 1.6 parts of sodium methacrylate , 0.4 parts of nano zinc oxide, 1.2 parts of silane coupling agent, 0.5 parts of sodium laurate, 1.6 parts of triethanolamine, 0.8 parts of boron nitride, 15 parts of xylene, 8 parts of sodium bicarbonate aqueous solution, 20 parts of sodium chloride solution, 150 parts of ethanol, the preparation method comprises the following steps:

[0039] (1) Put nano-zinc oxide in a high-speed mixer, add triethanolamine and sodium laurate at 1300 rpm, stir for 30 minutes, increase the speed to 2000 rpm, and add silane coupling agent at the same time and stir for 20 minutes, Then heat treatment at 230° C. for 3 hours to obtain pretreated nano-zinc oxide;

[0040] (2) In an ice-water bath at 5°C, add bisphenol A epoxy resin and polydimethylsiloxane i...

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Abstract

The invention relates to the technical field of chemical materials and discloses a tackifier capable of improving the gluing property of an EVA hot melt adhesive. The special main chain structure andspatial structure of silicone resin are utilized to tightly combine inorganic nano particles with macromolecular layers through chemical bonds, thereby endowing resin with favorable performance; the prepared tackifier has good compatibility with EVA resin, can achieve a synchronous softening effect, and is capable of improving the fluidity and diffusibility of the melt adhesive; the adhesive interface wetting property and initial viscosity are good, and the melt adhesive can spread on an adherend; even if in an repeated changed outside environment, stable fusing point of the hot melt adhesivecan be maintained; the EVA hot melt adhesive prepared by adding the tackifier is good in gluing property and good in thermostability; and the tackifier amount is 30-40% of common tackifiers, so that the cost is saved. The tackifier is capable of obviously improving the gluing property of the EVA hot melt adhesive, and realizing practical significance of high-quality and low-cost production of hotmelt adhesives, thereby being a technical scheme worthy of popularizaiton and use.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and in particular relates to a tackifier for improving the bonding performance of EVA hot-melt adhesives. Background technique [0002] EVA hot melt adhesive is a solid meltable polymer that does not require solvents and does not contain 100% moisture; it is solid at room temperature, and when heated and melted to a certain temperature, it becomes a fluid and viscous liquid. The melted EVA hot melt adhesive is light brown or white. EVA hot melt adhesives are composed of basic resins, tackifiers, viscosity modifiers and antioxidants. The basic resin of hot melt adhesive is the copolymerization of ethylene and vinyl acetate under high temperature and pressure, that is, EVA resin. This resin is the main component of making hot melt adhesives. The proportion and quality of the basic resin determine the basic performance of hot melt adhesives. The higher the crystallinity, the higher the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J163/00C09J183/04C09J11/08C09J11/06C09J11/04
CPCC08K2003/2296C08K2003/385C08K2201/011C08L2205/03C09J11/04C09J11/06C09J11/08C09J123/0853C08L63/00C08L83/04C08K13/02C08K5/098C08K3/22C08K3/38
Inventor 李华令刘华平
Owner ANHUI SOYA DECORATIVE MATERIALS
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