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Solvent-free bi-component polyurethane adhesive applied to composite floor

A two-component polyurethane and composite flooring technology, which is applied in the direction of polyurea/polyurethane adhesives, adhesive types, adhesive additives, etc., can solve the problems of narrow range of composite substrates, and achieve improved thermodynamic properties and good elasticity , Improve the effect of thermal curing speed

Inactive Publication Date: 2019-08-27
永隆高新科技(青岛)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A comprehensive comparison of the existing technologies shows that the current solvent-free polyurethane adhesives have excellent high temperature resistance and water resistance, but the range of composite substrates used is relatively narrow, especially the application in composite floors still requires key technologies integration and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A solvent-free two-component polyurethane adhesive suitable for composite floors, the solvent-free two-component polyurethane adhesive includes A component and B component, the A component is a polyisocyanate raw material, the The B component is oligomeric polyol, cross-linking / chain extender, filler, thixotropic agent, catalyst; the A component and the B component are mixed according to the ratio of NCO / OH=1.1; the B component The mass ratio of each raw material is composed of: 70 parts of oligomeric polyol, 0.6 part of crosslinking / chain extender, 5 parts of filler, 1.5 parts of thixotropic agent, 0.5 part of catalyst, and 0.15 part of graphene;

[0023] The polyisocyanate raw material in the A component is 4,4'-diphenylmethane diisocyanate; the oligomer polyol in the B component is polyether polyol, polyester polyol, polyolefin polyol, A mixture of castor oil, the mass ratio is 1:1:1:1; the crosslinking / chain extender raw material in the B component is ethylene glyco...

Embodiment 2

[0025] A solvent-free two-component polyurethane adhesive suitable for composite floors, the solvent-free two-component polyurethane adhesive includes A component and B component, the A component is a polyisocyanate raw material, the The B component is oligomeric polyol, cross-linking / chain extender, filler, thixotropic agent, catalyst; the A component and the B component are mixed according to the ratio of NCO / OH=1.1; the B component The mass ratio of each raw material is composed of: 70 parts of oligomeric polyol, 0.6 part of crosslinking / chain extender, 5 parts of filler, 1.5 parts of thixotropic agent, 0.5 part of catalyst, and 0.15 part of graphene;

[0026] The polyisocyanate raw material in the A component is 4,4'-diphenylmethane diisocyanate; the oligomer polyol in the B component is polyether polyol, polyester polyol, polyolefin polyol The mixture, the mass ratio is 1:1:1; the crosslinking / chain extender raw material in the B component is ethylene glycol; the filler i...

Embodiment 3

[0028] A solvent-free two-component polyurethane adhesive suitable for composite floors, the solvent-free two-component polyurethane adhesive includes A component and B component, the A component is a polyisocyanate raw material, the The B component is oligomeric polyol, crosslinking / chain extender, filler, thixotropic agent, catalyst; the A component and the B component are mixed according to the ratio of NCO / OH=1.2; the B component The mass ratio of each raw material is composed of: 70 parts of oligomeric polyol, 0.6 part of crosslinking / chain extender, 5 parts of filler, 1.5 parts of thixotropic agent, 0.5 part of catalyst, and 0.15 part of graphene;

[0029] The polyisocyanate raw material in the A component is 4,4'-diphenylmethane diisocyanate; the oligomer polyol in the B component is polyether polyol, polyester polyol, polyolefin polyol, A mixture of castor oil, the mass ratio is 1:1:1:1; the crosslinking / chain extender raw material in the B component is ethylene glycol...

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PUM

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Abstract

The invention discloses a solvent-free bi-component polyurethane adhesive applied to a composite floor, and belongs to the technical field of adhesives. The solvent-free bi-component polyurethane adhesive comprises an A component and a B component, wherein the A component comprises a polyisocyanate raw material, and the B component comprises oligomeric polyols, a cross-linking / chain extension agent, a filler, a thixotropic agent and a catalyst; the A component and the B component are mixed according to the proportion of NCO to OH of 1.0-1.2; the B component is prepared from, by mass, 60-80 parts of the oligomeric polyols, 0.2-1 part of the cross-linking / chain extension agent, 2-8 parts of the filler, 1-2 parts of the thixotropic agent, 0.1-0.5 part of the catalyst and 0.1-0.2 part of graphene. The solvent-free bi-component polyurethane adhesive does not have the problem of solvent volatilization, is an environment-friendly adhesive, has good elasticity, toughness, heat and low temperature resistance and the like after being cured, and achieves the scale application in the composite floor.

Description

technical field [0001] The invention relates to a polyurethane adhesive, in particular to a solvent-free two-component polyurethane adhesive suitable for composite floors and a preparation method thereof, belonging to the technical field of adhesives. Background technique [0002] Polyurethane adhesives refer to adhesives containing urethane groups (-NHCOO-) or isocyanate groups (NCO) in the molecular chain. Polyurethane has high reactivity and strong adhesive force due to its highly polar isophosphate group and urethane group. Polyurethane adhesives have excellent shear strength and impact resistance, and can withstand shock vibration and bending fatigue. Polyurethane has a low glass transition temperature and excellent low temperature resistance. In addition, the polyurethane adhesive also has the characteristics of adjustable film hardness, simple bonding process, and can be cured at room temperature and heating. [0003] Two-component polyurethane adhesives are the mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J175/04C09J11/04
CPCC08K2003/265C09J11/04C09J175/04C09J175/14C08K3/042C08K3/26C08K3/36
Inventor 朱金水
Owner 永隆高新科技(青岛)有限公司