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Two-component solvent-free polyurethane adhesive for rock wool boards and preparation method of adhesive

A solvent-free polyurethane and adhesive technology, applied in polyurea/polyurethane adhesives, adhesives, polymer adhesive additives, etc., can solve problems such as poor crack resistance, poor aging resistance, and low bonding strength. Achieve excellent water resistance, good fastness, and good durability

Inactive Publication Date: 2019-10-08
南京威邦新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a special two-component polyurethane adhesive for rock wool boards to solve the shortcomings of traditional adhesives such as low bonding strength, poor crack resistance, environmental pollution, and poor aging resistance.

Method used

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  • Two-component solvent-free polyurethane adhesive for rock wool boards and preparation method of adhesive
  • Two-component solvent-free polyurethane adhesive for rock wool boards and preparation method of adhesive
  • Two-component solvent-free polyurethane adhesive for rock wool boards and preparation method of adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A two-component solvent-free polyurethane adhesive for rock wool boards, the two-component polyurethane adhesive is uniformly stirred from a polyol component and an isocyanate component, and the weight ratio of the polyol component to the isocyanate component is 4 to 6: 1,

[0029] A kind of two-component solvent-free polyurethane adhesive for rock wool board, the composition of described polyol component comprises:

[0030]

[0031] The composition of the isocyanate component includes:

[0032] Polymethylene polyphenylisocyanate (polymeric MDI) 91-96%

[0033] Polyol modified diphenylmethane diisocyanate (modified MDI) 4-9%.

[0034] Further, the polyoxypropylene polyol is one or a mixture of polyoxypropylene polyols with a weight average molecular weight of 1000-3000, and its hydroxyl value is 50-200 mgKOH / g.

[0035] Further, the sucrose polyether polyol is a polyether polyol starting with sucrose and glycerin, and its hydroxyl value is 300-500 mgKOH / g.

[003...

Embodiment 2

[0045] A two-component solvent-free polyurethane adhesive for rock wool boards is prepared by uniformly stirring a polyol component and an isocyanate component.

[0046] Wherein, the composition of polyol component comprises:

[0047]

[0048]

[0049] Wherein, the composition of isocyanate component comprises:

[0050] Polymethylene polyphenyl isocyanate (polymeric MDI) 96%

[0051] Polyether modified diphenylmethane diisocyanate (modified MDI) 4%;

[0052] A kind of two-component solvent-free polyurethane adhesive for rock wool board, its preparation method comprises the following steps:

[0053] Step 1, prepare polyol component and isocyanate component respectively:

[0054] Preparation of polyol components: According to the mass percentages of the raw materials described in this example, polyether polyols, castor oil polyols, sucrose polyether polyols, calcium carbonate powder, and calcium oxide powder were added to the mixing reactor and stirred After 30 minutes...

Embodiment 3

[0058] A two-component solvent-free polyurethane adhesive for rock wool boards, the two-component polyurethane adhesive is configured from a polyol component and an isocyanate component,

[0059] Wherein, the composition of polyol component comprises:

[0060]

[0061]

[0062] Wherein, the composition of isocyanate component comprises:

[0063] Polymethylene polyphenylisocyanate (polymeric MDI) 95%

[0064] Polyether modified diphenylmethane diisocyanate (modified MDI) 5%;

[0065] A kind of two-component solvent-free polyurethane adhesive for rock wool board, its preparation method comprises the following steps:

[0066] Step 1, prepare polyol component and isocyanate component respectively:

[0067] Preparation of polyol components: according to the mass percentages of the raw materials described in this example, polyether polyols, castor oil polyols, sucrose polyether polyols, and calcium carbonate powder were added to a mixing reactor and stirred for 30 minutes, ...

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Abstract

The invention belongs to the technical field of adhesives, in particular to a two-component solvent-free polyurethane adhesive for rock wool boards and a preparation method of the adhesive. The two-component polyurethane adhesive is prepared from a polyol component and an isocyanate component, wherein the weight ratio of the polyol component to the isocyanate component is 4-6: 1, and the polyol component comprises 35-50% of polyoxypropylene polyol, 5-15% of castor oil polyol, 1-5% of sucrose polyether polyol, 35-50% of calcium carbonate powder, 0-5% of calcium oxide powder, 0.1-0.5% of a foamstabilizer and 0.1-0.8% of an auxiliary agent; and the isocyanate component comprises 91-96% of polymethylene polyphenyl isocyanate and 4-9% of polyol-modified diphenylmethane diisocyanate. The adhesive has the advantages of low viscosity, simple and convenient operation, uniform and controllable foaming, can be combined and bonded with multiple building materials, has high strength, strong toughness and good fastness, has high temperature resistance, cold resistance, excellent water resistance, good durability, no cracking, no degumming and the like.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a two-component solvent-free polyurethane adhesive for rock wool boards and a preparation method thereof. Background technique [0002] In recent years, with the continuous advancement of China's building energy-saving work, external wall insulation technology has developed vigorously as an important building energy-saving technology in China. The building exterior wall insulation structure refers to a building structure that uses a certain fixing method to fix the insulating material with low thermal conductivity and the building wall to increase the average thermal resistance of the wall, so as to achieve the effect of heat preservation or heat insulation. At present, organic thermal insulation material EPS or XPS is usually used as the basic material of the external wall thermal insulation structure, but the combustion classification of such materials is generall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C09J11/08C08G18/67C08G18/48
CPCC08G18/36C08G18/4804C08K2003/2206C08K2003/265C08K2201/011C08L2201/08C09J11/04C09J11/08C09J175/14C08L83/04C08L83/12C08K3/26C08K3/22
Inventor 陈小锋
Owner 南京威邦新材料有限公司
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