Preparation method for anti-aging polyester hot melt adhesive for electronic products

A technology for polyester hot melt adhesive and electronic products, which is applied in the directions of adhesives, polymer adhesive additives, rosin adhesives, etc. achieve good adhesion

Inactive Publication Date: 2017-12-26
潘明华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem to be solved: the purpose of this invention is to provide an aging-resistant polyester hot-melt adhesive for electronic products, which solves the problem of attenuation of the cohesive force of the polyester hot-melt adhesive during use. still have high adhesion

Method used

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  • Preparation method for anti-aging polyester hot melt adhesive for electronic products

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Embodiment 1

[0015] A method for preparing an aging-resistant polyester hot-melt adhesive for electronic products, comprising the following steps: (1) Weighing the following components by mass ratio: 15 parts of disproportionated rosin, 100 parts of toluene, 4 parts of thionyl chloride, triethylamine 3 parts, 0.01 part of hydroquinone, 12 parts of 2-ethylhexyl acrylate; (2) After dissolving disproportionated rosin with toluene, add thionyl chloride at the same time, react at 45°C for 8 hours, add triethylamine, Hydroquinone and 2-ethylhexyl acrylate were reacted at 70°C for 7 h, filtered, washed with water, and solvent removed to obtain a rosin tackifying resin; (3) Copolyester, rosin tackifying resin, α-Methylstyrene modified C 5 Petroleum resin, ethylene-vinyl acetate-vinyl alcohol terpolymer, and terpene resin were mixed according to the mass ratio of 40:24:10:8:12, stirred at 160°C at a speed of 60r / min for 10min, and extruded by a twin-screw Extrude and granulate to obtain polyester ...

Embodiment 2

[0017] A method for preparing an aging-resistant polyester hot-melt adhesive for electronic products, comprising the following steps: (1) Weighing the following components by mass ratio: 28 parts of disproportionated rosin, 40 parts of toluene, 12 parts of thionyl chloride, triethylamine 10 parts, 0.002 parts of hydroquinone, 6 parts of 2-ethylhexyl acrylate; (2) After dissolving disproportionated rosin with toluene, add thionyl chloride at the same time, react at 80°C for 3 hours, add triethylamine, Hydroquinone and 2-ethylhexyl acrylate were reacted at 85°C for 2 h, and the rosin tackifying resin was obtained after filtering, washing with water, and solvent removal; (3) copolyester, rosin tackifying resin, α-Methylstyrene modified C 5 Petroleum resin, ethylene-vinyl acetate-vinyl alcohol terpolymer, and terpene resin were mixed according to the mass ratio of 65:15:5:22:5, stirred at 160°C for 3 minutes at a speed of 100r / min, and extruded with a twin-screw Extrude and granu...

Embodiment 3

[0019] A method for preparing an aging-resistant polyester hot-melt adhesive for electronic products, comprising the following steps: (1) Weighing the following components by mass ratio: 18 parts of disproportionated rosin, 50 parts of toluene, 10 parts of thionyl chloride, triethylamine 5 parts, 0.008 parts of hydroquinone, 8 parts of 2-ethylhexyl acrylate; (2) After dissolving disproportionated rosin with toluene, add thionyl chloride at the same time, react at 55°C for 6 hours, add triethylamine, Hydroquinone, 2-ethylhexyl acrylate, react at 75°C for 6 hours, filter, wash with water, and remove solvent to obtain rosin tackifying resin; (3) Copolyester, rosin tackifying resin, α -Methyl styrene modified C 5 Petroleum resin, ethylene-vinyl acetate-vinyl alcohol terpolymer, and terpene resin were mixed at a mass ratio of 45:18:9:14:10, stirred at 160°C for 8 minutes at a speed of 70r / min, and extruded with a twin-screw Extrude and granulate to obtain polyester hot-melt granul...

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Abstract

The invention provides a method for preparing an aging-resistant polyester hot-melt adhesive for electronic products. The preparation method is as follows: (1) Weigh and prepare the rosin tackifying resin component by weight; (2) After dissolving the disproportionated rosin with toluene, add thionyl chloride at the same time, after the reaction, add triethylamine, hydroquinone, acrylic acid ‑2‑Ethylhexyl ester, continue to react, after filtering, washing, and removing solvent, get rosin tackifying resin; (2) Copolyester, rosin tackifying resin, α‑methylstyrene modified C5 petroleum resin , ethylene-vinyl acetate-vinyl alcohol terpolymer, and terpene resin are uniformly mixed according to the mass ratio, and are extruded and granulated by a twin-screw extruder to obtain polyester hot-melt rubber particles. The aging-resistant polyester hot-melt adhesive for electronic products of the invention is suitable for bonding and assembling plastics and metal parts in electronic products.

Description

technical field [0001] The invention relates to the field of electronic material adhesives, in particular to a method for preparing an aging-resistant polyester hot-melt adhesive for electronic products. Background technique [0002] Polyester hot melt adhesive is a saturated linear thermoplastic resin made from polybasic acid (ester) and polyol through esterification reaction, transesterification reaction and polycondensation reaction. The main raw materials are dicarboxylic acid (ester) and diol. Since the polyester molecular chain contains a large number of polar groups such as ester bonds and ether bonds, it has good heat resistance, adhesive strength, impact resistance, weather resistance, water resistance, elasticity and electrical insulation properties, so it is suitable for fabrics. , leather, wood, plastic, ceramics and other non-metal and metal materials have good adhesion. However, domestic copolyester hot melt adhesives have disadvantages such as high crystallin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/00C09J193/04C09J123/08C09J11/08
CPCC09J167/00C08L2201/08C08L2205/035C09J11/08
Inventor 潘明华
Owner 潘明华
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