Holt melt adhesive for book binding and preparation method thereof

Abstract

The invention discloses a hot melt adhesive for book binding, and belongs to the field of hot melt adhesives. The hot melt adhesive is prepared from the raw materials in parts by weight: 35 to 47 parts of modified EVA (Ethylene-Vinyl Acetate) resin, 12 to 20 parts of paraffin, 3 to 5 parts of a viscosity modifier, 26 to 32 parts of a tackifier, 0.25 to 0.8 part of an antioxidant, 20 to 40 parts offiller and 0.5 to 2.5 parts of a coupling agent. The hot melt adhesive for book binding, provided by the invention, has the advantages of high bonding strength, strong oxidation and aging resistanceand strong durability.

Description

technical field

[0001] The invention relates to the field of hot-melt adhesives, in particular to a hot-melt adhesive for bookbinding and a preparation method thereof. Background technique

[0002] Hot melt adhesive is a kind of plastic adhesive, which is in solid state at room temperature, and becomes a liquid with certain viscosity after being heated to a certain temperature, and can be quickly bonded.

[0003] There are three main methods of book binding: wire binding, nail binding and glue binding, among which glue binding is the most commonly used method, and adhesive is an important supporting material for glue binding. Due to the simplicity of the glue binding process and the relatively fast publishing cycle, in recent years, the glue binding process has become the main method of bonding books, and the scope of use will further expand in the future. Therefore, the development of bonding materials for bookbinding is also more quickly. The development process of bindi...

Examples

preparation example 1

[0034] Under nitrogen protection conditions, 50Kg of ethylene-vinyl acetate copolymer, 15Kg of polyethylene glycol-polypropylene adipate-1,2-propylene glycol ester multi-block copolymer, 1Kg of glycerin and trimethylolpropane-tri(3 -Aziridinyl)propionate 0.5Kg mixed, heated to 60°C, then sheared at a speed of 5000r / min for 15min to obtain mixture A; after that, added 5Kg of maleic anhydride and 3Kg of polycaprolactone and raised to 100°C , keep warm and stir for 30min, the stirring speed is 300r / min, to obtain the modified EVA resin.

preparation example 2

[0036] Under the condition of nitrogen protection, ethylene-vinyl acetate copolymer 60Kg, polyethylene glycol-polyadipate-1,2-trimethylene glycol ester multi-block copolymer 17Kg, glycerin 2Kg and trimethylolpropane-tri( Mix 1Kg of 3-aziridinyl)propionate, heat up to 80°C, and then shear at a speed of 8000r / min for 20min to obtain mixture A; after that, add 8Kg of maleic anhydride and 5Kg of polycaprolactone and heat up to 105°C , keep warm and stir for 45min, the stirring speed is 300r / min, to obtain the modified EVA resin.

preparation example 3

[0038] Under the condition of nitrogen protection, ethylene-vinyl acetate copolymer 70Kg, polyethylene glycol-polyadipate-1,2-trimethylene glycol ester multi-block copolymer 20Kg, glycerin 3Kg and trimethylolpropane-tri( Mix 1.5Kg of 3-aziridinyl)propionate, heat up to 100°C, and then shear at a speed of 10000r / min for 30min to obtain mixture A; after that, add 10Kg of maleic anhydride and 8Kg of polycaprolactone and heat up to 110°C ℃, keep warm and stir for 60min, the stirring speed is 300r / min, the modified EVA resin is obtained.

[0039] Two, embodiment and comparative example

technical field

[0001] The invention relates to the field of hot-melt adhesives, in particular to a hot-melt adhesive for bookbinding and a preparation method thereof. Background technique

[0002] Hot melt adhesive is a kind of plastic adhesive, which is in solid state at room temperature, and becomes a liquid with certain viscosity after being heated to a certain temperature, and can be quickly bonded.

[0003] There are three main methods of book binding: wire binding, nail binding and glue binding, among which glue binding is the most commonly used method, and adhesive is an important supporting material for glue binding. Due to the simplicity of the glue binding process and the relatively fast publishing cycle, in recent years, the glue binding process has become the main method of bonding books, and the scope of use will further expand in the future. Therefore, the development of bonding materials for bookbinding is also more quickly. The development process of bindi...

Examples

preparation example 1

[0034] Under nitrogen protection conditions, 50Kg of ethylene-vinyl acetate copolymer, 15Kg of polyethylene glycol-polypropylene adipate-1,2-propylene glycol ester multi-block copolymer, 1Kg of glycerin and trimethylolpropane-tri(3 -Aziridinyl)propionate 0.5Kg mixed, heated to 60°C, then sheared at a speed of 5000r / min for 15min to obtain mixture A; after that, added 5Kg of maleic anhydride and 3Kg of polycaprolactone and raised to 100°C , keep warm and stir for 30min, the stirring speed is 300r / min, to obtain the modified EVA resin.

preparation example 2

[0036] Under the condition of nitrogen protection, ethylene-vinyl acetate copolymer 60Kg, polyethylene glycol-polyadipate-1,2-trimethylene glycol ester multi-block copolymer 17Kg, glycerin 2Kg and trimethylolpropane-tri( Mix 1Kg of 3-aziridinyl)propionate, heat up to 80°C, and then shear at a speed of 8000r / min for 20min to obtain mixture A; after that, add 8Kg of maleic anhydride and 5Kg of polycaprolactone and heat up to 105°C , keep warm and stir for 45min, the stirring speed is 300r / min, to obtain the modified EVA resin.

preparation example 3

[0038] Under the condition of nitrogen protection, ethylene-vinyl acetate copolymer 70Kg, polyethylene glycol-polyadipate-1,2-trimethylene glycol ester multi-block copolymer 20Kg, glycerin 3Kg and trimethylolpropane-tri( Mix 1.5Kg of 3-aziridinyl)propionate, heat up to 100°C, and then shear at a speed of 10000r / min for 30min to obtain mixture A; after that, add 10Kg of maleic anhydride and 8Kg of polycaprolactone and heat up to 110°C ℃, keep warm and stir for 60min, the stirring speed is 300r / min, the modified EVA resin is obtained.

[0039] Two, embodiment and comparative example