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Glue for shoemaking and preparation method thereof

A technology for glue and shoes, which is applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc. It can solve the problems of increased leveling glue consumption, easy glue overflow, poor fluidity, etc., to achieve adhesion Enhanced strength, improved fluidity, and improved bond strength

Inactive Publication Date: 2020-06-05
江西正博实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, in the manufacturing process of shoes, the upper and the sole often need to be glued and bonded. The traditional glue for shoemaking needs to ensure high viscosity and poor fluidity while ensuring the bonding strength. Thereby affecting its leveling and the amount of glue will also increase, and it is also prone to overflow glue, therefore, a kind of glue for shoemaking with low viscosity and high adhesive strength is an important subject for those skilled in the art to study

Method used

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  • Glue for shoemaking and preparation method thereof
  • Glue for shoemaking and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A glue for shoemaking, comprising the following components in parts by weight: 32 parts of polyurethane prepolymer, 55 parts of organic solvent and 0.1 part of inorganic micron powder;

[0032] Wherein, polyurethane prepolymer comprises the raw material of following parts by weight:

[0033] 53 parts of mixed polyol, 5 parts of diisocyanate, 5 parts of epoxy resin, 1 part of chain extender, 5 parts of crosslinking agent and 0.3 part of inorganic nano powder.

[0034] The mixed polyols include polyester polyols and polyether polyols with a ratio of parts by weight of 1:2.

[0035] In the present embodiment, polyester polyol is polybutylene adipate diol;

[0036] Polyether polyol uses sorbitol and glycerin as the initiator, and the polymerized monomer is propylene oxide, which is a product formed by ring-opening polymerization;

[0037] In the present embodiment, diisocyanate is selected from 1,6-hexamethylene diisocyanate; Organic solvent adopts acetone;

[0038] In t...

Embodiment 2

[0049] A glue for shoemaking, comprising the following components in parts by weight: 67 parts of polyurethane prepolymer, 70 parts of organic solvent and 0.3 part of inorganic micron powder;

[0050] Wherein, polyurethane prepolymer comprises the raw material of following parts by weight:

[0051] 64 parts of mixed polyol, 7 parts of diisocyanate, 8 parts of epoxy resin, 2 parts of chain extender, 7 parts of crosslinking agent and 1.5 parts of inorganic nano powder.

[0052] The mixed polyols include polyester polyols and polyether polyols with a ratio of parts by weight of 1:1.

[0053] In this embodiment, the polyester polyol is polycarbonate diol.

[0054] Polyether polyol is made of sucrose and diethylene glycol as the initiator, and the polymerization monomer is propylene oxide, which is formed by ring-opening polymerization; the hydroxyl value is 560mgKOH / g, and the number average molecular weight is about 700;

[0055] In this embodiment, the diisocyanate is isophoro...

Embodiment 3

[0068] A glue for shoemaking, comprising the following components in parts by weight: 70 parts of polyurethane prepolymer, 69 parts of organic solvent and 1 part of inorganic micron powder;

[0069] Wherein, polyurethane prepolymer comprises the raw material of following parts by weight:

[0070] 80 parts of mixed polyol, 8 parts of diisocyanate, 7 parts of epoxy resin, 3 parts of chain extender, 8 parts of crosslinking agent and 3 parts of inorganic nano powder.

[0071] The mixed polyols include polyester polyols and polyether polyols with a ratio of parts by weight of 3:2.

[0072] In the present embodiment, polyester polyol adopts polycaprolactone diol;

[0073] Polyether polyol uses glycerin as the initiator, propylene oxide ring-opening polymerization, ethylene oxide capping, the hydroxyl value is 311mgKOH / g, and the number average molecular weight is about 500.

[0074] In this embodiment, the diisocyanate is dicyclohexylmethane diisocyanate.

[0075] In the present ...

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Abstract

The invention discloses a glue for shoemaking. The glue is prepared from the following components in parts by weight: 30 to 70 parts of polyurethane prepolymer, 20 to 70 parts of an organic solvent and 0.1 to 1 part of inorganic micron powder, wherein the polyurethane prepolymer is prepared from the following raw materials in parts by weight: 50 to 80 parts of mixed polyol, 5 to 10 parts of diisocyanate, 5 to 10 parts of epoxy resin, 1 to 3 parts of a chain extender, 5 to 8 parts of a crosslinking agent and 0.1 to 3 parts of inorganic nano powder. The glue for shoemaking can still have a highadhesive force under low viscosity; the invention further discloses a preparation method of the glue for shoemaking; the preparation method comprises the steps of preparing a polyurethane prepolymer,preparing a modified polyurethane prepolymer and then preparing the glue for shoemaking; and the prepared glue is stable in storage, good in leveling property in use and not prone to overflowing during gluing.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a shoe-making glue and a preparation method thereof. Background technique [0002] Shoes are indispensable daily necessities in people's life, and shoe production is an important part of my country's knitting industry. Among them, in the manufacturing process of shoes, the upper and the sole often need to be glued and bonded. The traditional glue for shoemaking needs to ensure high viscosity and poor fluidity while ensuring the bonding strength. As a result, its leveling property will be affected and the amount of glue used will also increase, and glue overflow will easily occur. Therefore, a kind of glue for shoemaking with low viscosity and high adhesive strength is an important subject for those skilled in the art to study. Contents of the invention [0003] The object of the present invention is to at least solve one of the technical problems existing in the prior art, and provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/04C08G18/66C08G18/48C08G18/42C08G18/58C08G18/32
CPCC08G18/3206C08G18/4045C08G18/4238C08G18/48C08G18/58C08G18/6607C08K2003/2241C08K2201/003C08K2201/011C09J11/04C09J175/08C08K3/36C08K3/26C08K3/22
Inventor 朱江
Owner 江西正博实业有限公司
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