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Moisture curing type polyurethane hot melt adhesive and preparation method thereof

A polyurethane hot-melt adhesive and moisture-curing technology, which is applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., to achieve the effect of strong permeability and affinity, good surface activity, and convenient sizing

Active Publication Date: 2017-10-13
GUANGZHOU QIANSHUN IND MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding strength and toughness of existing moisture-curable polyurethane hot melt adhesives still need to be improved.

Method used

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  • Moisture curing type polyurethane hot melt adhesive and preparation method thereof
  • Moisture curing type polyurethane hot melt adhesive and preparation method thereof
  • Moisture curing type polyurethane hot melt adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment provides a moisture-curable polyurethane hot melt adhesive, including the raw materials in Table 1 in parts by weight. The preparation method of the moisture-curable polyurethane hot-melt adhesive of the present embodiment comprises the following steps:

[0023] Each raw material was weighed according to the composition of the moisture-curable polyurethane hot melt adhesive in Table 1.

[0024] React polyethylene glycol 200, 1,4-butanediol, ethyltrichlorosilane, cerium trichloride and polyisocyanate at 40°C for 5 hours under the condition of protective gas to obtain molecular weights ranging from 10 to 20 Wan's Si-O-containing polyurethane, and then add plasticizers, stabilizers and antioxidants to mix and disperse evenly to form a semi-finished base material. Add catalyst, filler and colorant to semi-finished base material, evenly disperse, defoam, and obtain.

[0025] The composition of the moisture-curable polyurethane hot-melt adhesive of table 1 e...

Embodiment 2

[0029] This embodiment provides a moisture-curable polyurethane hot melt adhesive, including the raw materials in Table 2 in parts by weight. The method for preparing the moisture-curable polyurethane hot-melt adhesive of this embodiment is the same as that of Embodiment 1.

[0030] The composition of the moisture-curable polyurethane hot-melt adhesive of table 2 embodiment 2

[0031]

[0032]

Embodiment 3

[0034] This embodiment provides a moisture-curable polyurethane hot-melt adhesive, including the raw materials in Table 3 in parts by weight. The method for preparing the moisture-curable polyurethane hot-melt adhesive of this embodiment is the same as that of Embodiment 1.

[0035] The composition of the moisture-curable polyurethane hot-melt adhesive of table 3 embodiment 3

[0036]

[0037]

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PUM

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Abstract

The invention relates to a moisture curing type polyurethane hot melt adhesive and a preparation method thereof. The moisture curing type polyurethane hot melt adhesive comprises the following raw materials in parts by weight: 20-30 parts of polyethylene glycol 200, 10-20 parts of 1,4-nutanediol, 10-30 parts of polyisocyanate, 5-10 parts of ethyltrichlorosilane, 0.5-3 parts of cerium trichloride, 5-12 parts of a plasticizer, 2-6 parts of a stabilizing agent, 0.1-2 parts of an antioxidant, 0-18 parts of a coloring agent, 10-20 parts of a catalyst and 0-20 parts of a filler, wherein the polyisocyanate is selected from MDI and / or HDI; the catalyst is selected from nano titanium dioxide and / or nano calcium carbonate. The moisture curing type polyurethane hot melt adhesive provided by the invention wholly has the characteristics of strong initial adhesion force, high bonding strength and good toughness, meanwhile has very strong permeability and affinity and can resist high temperature and be applicable to firm bonding of metals, plastics, glass and other base materials. The preparation method of the moisture curing type polyurethane hot melt adhesive, provided by the invention, is simple and reliable, and convenient in sizing.

Description

technical field [0001] The invention relates to the field of electronic adhesives, in particular to a moisture-curing polyurethane hot-melt adhesive and a preparation method thereof. Background technique [0002] Hot melt adhesive is a kind of plastic adhesive. Its physical state changes with temperature within a certain temperature range, but its chemical properties remain unchanged. It is non-toxic and tasteless, and is an environmentally friendly chemical product. Among them, moisture-curing polyurethane hot melt adhesives are widely used. However, the bonding strength and toughness of the existing moisture-curing polyurethane hot-melt adhesives still need to be improved. Contents of the invention [0003] Based on this, it is necessary to provide a moisture-curable hot-melt adhesive capable of high bonding strength and good flexibility and a preparation method thereof. [0004] A moisture-curable polyurethane hot-melt adhesive, comprising the following raw materials ...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J11/06C09J11/04C08G18/76C08G18/73C08G18/66C08G18/48C08G18/32C08G18/38C08G18/22
CPCC08G18/222C08G18/225C08G18/3206C08G18/3893C08G18/4825C08G18/6666C08G18/6674C08G18/724C08G18/73C08G18/7671C08G2170/20C08K3/04C08K5/098C08K5/12C08K13/02C08K2201/014C09J11/04C09J11/06C09J175/08
Inventor 田耕张念椿杨露明
Owner GUANGZHOU QIANSHUN IND MATERIAL
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