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Ultraviolet resistant sealant and preparation method thereof

A sealant and UV-resistant technology, applied in the field of sealants, can solve problems such as insufficient UV-resistant performance, and achieve the effects of improving various properties, reducing production costs, and having good compatibility.

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

In the prior art, the performance of the sealant needs to be continuously optimized, especially the insufficient UV resistance, which needs to be improved

Method used

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  • Ultraviolet resistant sealant and preparation method thereof
  • Ultraviolet resistant sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A UV-resistant sealant proposed in the embodiment of the present invention is prepared according to the following steps:

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

[0035] S2: react tetrahydrofuran polyether with diisocyanate to obtain a prepolymer containing -NCO groups;

[0036] S3: Add γ-glycidyloxypropyltrimethoxysilane to γ-aminopropyltriethoxysilane under stirring, continue to stir after adding, react for 6 hours, and leave to obtain hydroxylamine group-containing Polyalkoxysilane, ready for use;

[0037]S4: liquid polysulfide rubber, 75% by weight of dibutyl phthalate, 75% by weight of butyl phthalate benzyl, stearic acid, 80% by weight of rutile titanium dioxide, The light calcium carbonate of 80% weight portion, the talcum powder of 80% weight portion, the sericite of 80% weight portion, the diatomite of 80% weight portion, ultraviolet stabilizer, antioxidant, the hydroxylamine group obtained in S3 Mix polyalkoxysilanes,...

Embodiment 2

[0040] A UV-resistant sealant proposed in the embodiment of the present invention is prepared according to the following steps:

[0041] S1: Weigh each raw material according to the ratio of parts by weight;

[0042] S2: react tetrahydrofuran polyether with diisocyanate to obtain a prepolymer containing -NCO groups;

[0043] S3: Add γ-glycidyloxypropyltrimethoxysilane to γ-aminopropyltriethoxysilane under stirring, continue to stir after adding, react for 6 hours, and leave to obtain hydroxylamine group-containing Polyalkoxysilane, ready for use;

[0044] S4: liquid polysulfide rubber, 75% by weight of dibutyl phthalate, 75% by weight of butyl phthalate benzyl, stearic acid, 80% by weight of rutile titanium dioxide, The light calcium carbonate of 80% weight portion, the talcum powder of 80% weight portion, the sericite of 80% weight portion, the diatomite of 80% weight portion, ultraviolet stabilizer, antioxidant, the hydroxylamine group obtained in S3 Mix polyalkoxysilanes...

Embodiment 3

[0047] A UV-resistant sealant proposed in the embodiment of the present invention is prepared according to the following steps:

[0048] S1: Weigh each raw material according to the ratio of parts by weight;

[0049] S2: react tetrahydrofuran polyether with diisocyanate to obtain a prepolymer containing -NCO groups;

[0050] S3: Add γ-glycidyloxypropyltrimethoxysilane to γ-aminopropyltriethoxysilane under stirring, continue to stir after adding, react for 6 hours, and leave to obtain hydroxylamine group-containing Polyalkoxysilane, ready for use;

[0051] S4: liquid polysulfide rubber, 75% by weight of dibutyl phthalate, 75% by weight of butyl phthalate benzyl, stearic acid, 80% by weight of rutile titanium dioxide, The light calcium carbonate of 80% weight portion, the talcum powder of 80% weight portion, the sericite of 80% weight portion, the diatomite of 80% weight portion, ultraviolet stabilizer, antioxidant, the hydroxylamine group obtained in S3 Mix polyalkoxysilanes...

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Abstract

The invention discloses an ultraviolet resistant sealant which comprises the following constituent components in parts by weight: 90-100 parts of liquid polysulfide rubber, 80-90 parts of tetrahydrofuran type polyether, 40-50 parts of diisocyanate, 5-8 parts of 2,4,5-tri(dimethylamine methyl) phenol, 10-12 parts of MnO2, 20-25 parts of phthalic acid dibutyl ester, 15-20 parts of benzyl butyl phthalate, 2-3 parts of gamma-aminopropyl triethoxy silane, 4-6 parts of gamma-glycidyl ether oxopropyl triethoxy silane, 3-5 parts of stearic acid, 4-5 parts of rutile titanium dioxide, 15-20 parts of light calcium carbonate, 30-40 parts of a talcum powder, 5-7 parts of sericite, 10-12 parts of kieselguhr, 0.4-0.6 part of an ultraviolet stabilizer and 0.05-0.1 part of an antioxidant. The ultraviolet resistant sealant has the beneficial effects that due to the optimization of the components, a sealant with good comprehensive property can be prepared, moreover, a preparation process is updated according to the optimized components.

Description

technical field [0001] The invention belongs to the technical field of sealants, in particular to an ultraviolet-resistant 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 an...

Claims

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Application Information

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IPC IPC(8): C09J181/04C09J175/08C09J11/08C09J11/06C09J11/04
Inventor 胡昌悌
Owner WUHU SHUANGBAO BUILDING MATERIAL
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