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Single-component polyurethane material for preparing waterproof glue and preparation method thereof

A polyurethane material, one-component technology, applied in the field of polymers, can solve the problems of low transparency, unsightly, high viscosity, etc., and achieve the effect of overcoming high viscosity, ensuring waterproof ability, and enhancing penetration

Active Publication Date: 2015-04-22
ZIBO ZHENGDA ENERGY SAVING NEW MATERIAL
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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 single-component polyurethane material for making waterproof glue, which overcomes the shortcomings of traditional polyurethane waterproof coatings such as high viscosity, low transparency, and unsightly appearance after construction; the present invention also provides a preparation method for the polyurethane material , the method is simple and easy to implement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The one-component polyurethane material for making waterproof glue is made of the following raw materials in parts by weight:

[0024] 75 parts of polyether polyol, triethylenediamine (TEDA): 3 parts, bis(dimethylaminoethyl) ether (BDMAEE): 1 part, dichloromethane: 20 parts, toluene diisocyanate: 46 parts; Among them, the polyether polyol adopts a polyether polyol with a functionality of 2, a molecular weight of 2000, and a hydroxyl value of 56 and a polyether polyol with a functionality of 2, a molecular weight of 600, and a hydroxyl value of 187, and the ratio of the two is 2:1 .

[0025] The preparation method of the single-component polyurethane material for making waterproof glue is:

[0026] Raise the temperature of the polyether polyol mixture to 110.0°C, vacuum dehydrate for 1 hour, cool down to 30°C, add toluene diisocyanate, heat up to 82°C, react for 2 hours to obtain a prepolymer, cool down to 35°C, add solvent and catalyst, Mix and stir, seal, that is syn...

Embodiment 2

[0032] Polyether polyol DDL-2000D: 35 parts, DDL-600: 25 parts, triethylenediamine (TEDA): 2 parts, bis(dimethylaminoethyl) ether (BDMAEE): 1 part, dichloromethane : 15 parts, toluene diisocyanate: 56 parts.

[0033] The preparation method of the single-component polyurethane material for making waterproof glue is:

[0034] Heat the mixture of polyether polyols DDL-2000D and DDL-600 to 105°C, vacuum dehydrate for 2 hours, cool down to 40°C, add toluene diisocyanate, heat up to 80°C, react for 3 hours to obtain a prepolymer, and cool down to 30°C ℃, add solvent and catalyst, mix and stir, seal, and synthesize the product.

[0035] In the synthesized prepolymer, the mass content of -NCO is 18%.

[0036] The relevant parameter index of gained product is shown in Table 2:

[0037] Table 2 embodiment 2 product parameter table

[0038] indicators

Embodiment 3

[0040] Polyether polyol DDL-2000D: 60 parts, DDL-600: 20 parts, triethylenediamine (TEDA): 3.5 parts, bis(dimethylaminoethyl) ether (BDMAEE): 1 part, dichloromethane : 18 parts, toluene diisocyanate: 120 parts.

[0041] The preparation method of the single-component polyurethane material for making waterproof glue is:

[0042] Heat the mixture of polyether polyols DDL-2000D and DDL-600 to 110.0°C, vacuum dehydrate for 2 hours, cool down to 35°C, add toluene diisocyanate, heat up to 85°C, react for 1.5 hours to obtain a prepolymer, cool down to 35°C ℃, add solvent and catalyst, mix and stir, seal, and synthesize the product.

[0043] In the synthesized prepolymer, the mass content of -NCO is 25%.

[0044] The relevant parameter index of gained product is shown in Table 3:

[0045] Table 3 embodiment 3 product parameter table

[0046] indicators

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Abstract

The invention relates to a single-component polyurethane material for preparing waterproof glue, which is prepared from the following raw materials in parts by weight: 34-80 parts of polyether polyol, 1-4.5 parts of catalyst, 10-22 parts of solvent and 15-150 parts of polyisocyanate. The invention also provides a preparation method of the single-component polyurethane material for preparing waterproof glue. The polyurethane material provided by the invention overcomes the shortcomings of high viscosity, low transparency and no beauty after construction of traditional polyurethane waterproof paint; the prepared product has remarkably strong water pressure resistance and can sustain strong water pressure for a long time, and has pretty long-term self-repair waterproof ability and can guarantee the long-time waterproof ability of the repaired surface; and the preparation method provided by the invention is simple and easy to implement.

Description

technical field [0001] The invention relates to a polyurethane material, in particular to a single-component polyurethane material for making waterproof glue, which belongs to the field of macromolecules. Background technique [0002] The one-component polyurethane waterproof adhesive cures after contacting the water in the building cracks, forming a solid and tough seamless integral waterproof film on the surface of the base layer, and forms an elastic seamless rubber waterproof layer after curing. It has become one of the most easy-to-operate and most stable adhesive products for household waterproof materials. It is mainly suitable for waterproof, seepage-proof, and moisture-proof special adhesives for roofs and toilets, basements, reservoirs, and walls. , mainly used in home building waterproofing, and has strong adaptability to building cracks with high water content. One-component polyurethane waterproof adhesive has the following characteristics: extremely strong wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/48C09J175/08
CPCC08G18/12C08G18/1833C08G18/2063C08G18/4808C08G18/4825C09J175/08
Inventor 耿佃勇马炎董伟
Owner ZIBO ZHENGDA ENERGY SAVING NEW MATERIAL
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