Elastic sealant and preparation method

A technology of elastic sealing and sealant, which is applied in the field of sealant, can solve the problems of insufficient elastic sealant, etc., and achieve the effects of excellent anti-ultraviolet aging performance, environmental friendliness, and increased hygroscopicity

Inactive Publication Date: 2017-05-10
WUHU SHUANGBAO BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, high-grade elastic sealants are not perfect enough and need to be improved

Method used

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  • Elastic sealant and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare as follows:

[0034] S1: Weigh each raw material according to the ratio of parts by weight;

[0035] S2: Use polyether diol and polyether triol as soft segment, toluene diisocyanate, 3,3'-dichloro-4,4'-diaminodiphenylmethane as hard segment, stannous octoate as catalyst Synthesis of polyurethane prepolymers, wherein polyether diols and polyether triols are dehydrated before the synthesis reaction;

[0036]S3: To the polyurethane prepolymer obtained in S2, add dioctyl phthalate, tetra-oil, rutile titanium dioxide, light calcium carbonate, talcum powder, sericite, diatomaceous earth, 2,2- Dimorpholino diethyl ether, bis(2,6-dimethylmorpholino) ether, dibutyltin diacetylacetonate, 2,5(6)-diaminomethylbicyclo(2,2,1) Heptane, benzaldehyde, octanoic acid, 1,5,4-amino-3,3 dimethylbutyltrimethoxysilane, UV stabilizer, antioxidant, and in the process of adding each raw material, keep stirring to mix evenly ;

[0037] S4: Vacuumize the mixture obtained in S3 to remove...

Embodiment 2

[0039] Prepare as follows:

[0040] S1: Weigh each raw material according to the ratio of parts by weight;

[0041] S2: Use polyether diol and polyether triol as soft segment, toluene diisocyanate, 3,3'-dichloro-4,4'-diaminodiphenylmethane as hard segment, stannous octoate as catalyst Synthesis of polyurethane prepolymers, wherein polyether diols and polyether triols are dehydrated before the synthesis reaction;

[0042] S3: To the polyurethane prepolymer obtained in S2, add dioctyl phthalate, tetra-oil, rutile titanium dioxide, light calcium carbonate, talcum powder, sericite, diatomaceous earth, 2,2- Dimorpholino diethyl ether, bis(2,6-dimethylmorpholino) ether, dibutyltin diacetylacetonate, 2,5(6)-diaminomethylbicyclo(2,2,1) Heptane, benzaldehyde, octanoic acid, 1,5,4-amino-3,3 dimethylbutyltrimethoxysilane, UV stabilizer, antioxidant, and in the process of adding each raw material, keep stirring to mix evenly ;

[0043] S4: Vacuumize the mixture obtained in S3 to remov...

Embodiment 3

[0045] Prepare as follows:

[0046] S1: Weigh each raw material according to the ratio of parts by weight;

[0047] S2: Use polyether diol and polyether triol as soft segment, toluene diisocyanate, 3,3'-dichloro-4,4'-diaminodiphenylmethane as hard segment, stannous octoate as catalyst Synthesis of polyurethane prepolymers, wherein polyether diols and polyether triols are dehydrated before the synthesis reaction;

[0048] S3: To the polyurethane prepolymer obtained in S2, add dioctyl phthalate, tetra-oil, rutile titanium dioxide, light calcium carbonate, talcum powder, sericite, diatomaceous earth, 2,2- Dimorpholino diethyl ether, bis(2,6-dimethylmorpholino) ether, dibutyltin diacetylacetonate, 2,5(6)-diaminomethylbicyclo(2,2,1) Heptane, benzaldehyde, octanoic acid, 1,5,4-amino-3,3 dimethylbutyltrimethoxysilane, UV stabilizer, antioxidant, and in the process of adding each raw material, keep stirring to mix evenly ;

[0049] S4: Vacuumize the mixture obtained in S3 to remov...

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Abstract

The invention discloses an elastic sealant. The elastic sealant is prepared from the following components in parts by weight: 90 to 100 parts of polyether glycol, 30 to 35 parts of polyether triol, 20 to 25 parts of tolyelenediisocyanate, 10 to 13 parts of 3,3'-dichloro-4,4'-diaminodiphenyl methane, 25 to 30 parts of stannous octoate, 50 to 60 parts of dioctyl phthalate, 20 to 25 parts of cut 4 oil, 1 to 2 parts of 2,2-dimorpholino diethyl ether, 2 to 3 parts of di(2,6-dimethylmorpholino)ethyl ether, 1 to 2 parts of dibutyl tin diacetylacetonate, 3 to 5 parts of 2,5(6)-diaminomethylbicyclo(2,2,1)heptane, 3 to 5 parts of benzaldehyde, 2 to 3 parts of caprylic acid, 2 to 3 parts of 1,5,4-amino-3,3-dimethylbutyl trimethoxysilane, 15 to 20 parts of rutile type titanium dioxide, 70 to 80 parts of light calcium carbonate, 100 to 110 parts of talcum powder, 15 to 18 parts of sericite, 20 to 25 parts of diatomite, 0.4 to 0.6 part of an ultraviolet stabilizer and 0.05 to 0.1 part of an antioxidant. The sealant disclosed by the invention has good comprehensive performances.

Description

technical field [0001] The invention belongs to the technical field of sealants, in particular to an elastic sealant and a preparation method thereof. Background technique [0002] A sealant is a flowable or extruded amorphous material to fill a closed joint that can rely on embedded drying, temperature changes, solvent volatilization, chemically cross-linked material stability, and gradual solid glue, viscoelastic behavior or elasticity Sealing material molding. In order to ensure the sealing function, the sealant should have the following basic characteristics: ① Good embedding, storage stability, non-toxic or low toxicity; ② Low penetration with other media; ③ Seams that can resist telescopic movement, displacement and deformation; ④ In the joints subjected to cyclic deformation, it can guarantee the complete recovery of its performance and shape; ⑤ have enough strength to withstand the pressure; ⑥ not brittle and excessively softened at high temperature and low temperat...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J11/04C09J11/06C08G18/48C08G18/24C08G18/32C08G18/76C08G18/66
Inventor 胡昌悌
Owner WUHU SHUANGBAO BUILDING MATERIAL
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