CN103788894A - EVA (Ethylene-Vinyl Acetate) hot melt adhesive - Google Patents

Abstract

The invention disclosed an EVA (Ethylene-Vinyl Acetate) hot melt adhesive. The EVA hot melt adhesive comprises the following raw materials in parts by weight: 60-70 parts of EVA resin, 10-16 parts of hydrogenated rosin glycerol ester, 0.2-0.4 part of tributyl tin chloride, 1-2 parts of polybenzimidazole, 10-20 parts of polyethylene wax, 4-6 parts of di-n-butyl maleate, 1-2 parts of polydimethylsilane, 1-2 parts of sodium tripolyphosphate, 1-2 parts of medical stone powder and 10-14 parts of Tthickening agent. The hot melt adhesive is quick in curing speed, good in wettability and high in adhesive strength for non-polar plastics which are difficultly bonded by other adhesives; and the hot melt adhesive is specially suitable for sealing edges of furniture.

Description

A kind of EVA hot melt adhesive

Technical field

The present invention relates generally to a kind of hot melt adhesive powder, relates in particular to a kind of EVA hot melt adhesive.

Background technology

Hot melt adhesive is a kind of plastic tackiness agent, and in certain temperature range, its physical condition changes with temperature change, and chemical property is constant, and it is nonpoisonous and tasteless, belongs to environmental-protecting chemical product.

Summary of the invention

The object of the invention is just to provide a kind of EVA hot melt adhesive.

The present invention is achieved by the following technical solutions:

A kind of EVA hot melt adhesive, it is made up of the raw material of following weight parts:

EVA resin 60-70, hydrogenated rosin glyceride 10-16, tributyl tin trichloride 0.2-0.4, polybenzimidazole 1-2, polyethylene wax 10-20, dibutyl maleate 4-6, polydimethyl silane 1-2, tripoly phosphate sodium STPP 1-2, medical stone powder 1-2, tackifier 10-14;

Described tackifier are made up of the raw material of following weight parts:

Poly-hexanodioic acid-BDO esterdiol 10-16, tertiary carbonic acid glycidyl ester 2-3, staybelite 10-14, silane coupling agent KH560 1-2, borax 1-2, turps 0.5-1;

By above-mentioned poly-hexanodioic acid-1,4-butanediol ester glycol is heated to 75-80 ℃, add borax, after stirring, reducing temperature is 55-60 ℃, adds staybelite, insulated and stirred 3-5 minute, add silane coupling agent KH560,400-500 rev/min of dispersed with stirring 10-12 minute, adds the each raw material of residue, dry after fully mixing, obtain described tackifier.

A preparation method for EVA hot melt adhesive, comprises the following steps:

Above-mentioned EVA resin is mixed with polydimethyl silane, tripoly phosphate sodium STPP, at 70-80 ℃, be uniformly mixed 10-20 minute, add the each raw material of residue, send into mixing roll and mix, be heated to 95-100 ℃, mixing 20-30min; Mixing product after is evenly joined to twin screw extruder, extrude product and obtain described EVA hot melt adhesive through cooling, granulation.

Advantage of the present invention is:

Hot melt adhesive of the present invention has very fast curing speed, even if some are difficult to the non-polar plastic glueing joint with other tackiness agent, also has good wetting property and higher Joint strength, is specially adapted to edge sealing of furniture.

Embodiment

Embodiment 1

A kind of EVA hot melt adhesive, it by following weight parts (kilogram) raw material form:

EVA resin 70, hydrogenated rosin glyceride 16, tributyl tin trichloride 0.4, polybenzimidazole 1, polyethylene wax 20, dibutyl maleate 4, polydimethyl silane 1, tripoly phosphate sodium STPP 1, medical stone powder 2, tackifier 14;

Described tackifier are made up of the raw material of following weight parts:

Poly-hexanodioic acid-BDO esterdiol 16, tertiary carbonic acid glycidyl ester 3, staybelite 14, silane coupling agent KH560 2, borax 1, turps 0.5;

By above-mentioned poly-hexanodioic acid-1,75 ℃ of 4-butanediol ester glycol heating, add borax, after stirring, reducing temperature is 60 ℃, adds staybelite, insulated and stirred 5 minutes, add silane coupling agent KH560,500 revs/min of dispersed with stirring 12 minutes, add the each raw material of residue, dry after fully mixing, obtain described tackifier.

A preparation method for EVA hot melt adhesive, comprises the following steps:

Above-mentioned EVA resin is mixed with polydimethyl silane, tripoly phosphate sodium STPP, at 80 ℃, be uniformly mixed 20 minutes, add the each raw material of residue, send into mixing roll and mix, be heated to 100 ℃, mixing 30min; Mixing product after is evenly joined to twin screw extruder, extrude product and obtain described EVA hot melt adhesive through cooling, granulation.

Performance test

Shearing resistance: 4.7Mp;

Softening temperature: 94 ℃.

Claims (2)

1. an EVA hot melt adhesive, is characterized in that what it was made up of the raw material of following weight parts:

EVA resin 60-70, hydrogenated rosin glyceride 10-16, tributyl tin trichloride 0.2-0.4, polybenzimidazole 1-2, polyethylene wax 10-20, dibutyl maleate 4-6, polydimethyl silane 1-2, tripoly phosphate sodium STPP 1-2, medical stone powder 1-2, tackifier 10-14;

Described tackifier are made up of the raw material of following weight parts:

Poly-hexanodioic acid-BDO esterdiol 10-16, tertiary carbonic acid glycidyl ester 2-3, staybelite 10-14, silane coupling agent KH560 1-2, borax 1-2, turps 0.5-1;

By above-mentioned poly-hexanodioic acid-1,4-butanediol ester glycol is heated to 75-80 ℃, add borax, after stirring, reducing temperature is 55-60 ℃, adds staybelite, insulated and stirred 3-5 minute, add silane coupling agent KH560,400-500 rev/min of dispersed with stirring 10-12 minute, adds the each raw material of residue, dry after fully mixing, obtain described tackifier.

2. a preparation method for EVA hot melt adhesive as claimed in claim 1, is characterized in that comprising the following steps:

Above-mentioned EVA resin is mixed with polydimethyl silane, tripoly phosphate sodium STPP, at 70-80 ℃, be uniformly mixed 10-20 minute, add the each raw material of residue, send into mixing roll and mix, be heated to 95-100 ℃, mixing 20-30min; Mixing product after is evenly joined to twin screw extruder, extrude product and obtain described EVA hot melt adhesive through cooling, granulation.