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Environment-friendly sealant and preparation method thereof

An environmentally friendly, sealant technology, applied in the field of sealants, can solve problems such as human harm and load pollution, and achieve the effects of improving heat resistance, weakening decomposition, and increasing 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

The current sealants mainly use aromatic hydrocarbons such as toluene and xylene as solvents. The gas produced by the volatilization of the above solvents is harmful to the human body.

Method used

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  • Environment-friendly sealant and preparation method thereof
  • Environment-friendly sealant and preparation method thereof

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: Mix gasoline, ethyl acetate, and acetone to form a mixed solvent;

[0036] S3: the tert-butylphenol-formaldehyde resin is dissolved in the mixed solvent that is based on 35% of the tert-butylphenol-formaldehyde resin weight part in the mixed solvent that S2 obtains, then adds the magnesium oxide based on 5% of the tert-butyl-phenol-formaldehyde resin weight part, at room temperature Stir under 8 hours, carry out chelation reaction, obtain viscous shape chelate;

[0037] S4: Mix butyl rubber and natural rubber and masticate 5 times on an open mill to obtain a masticated product;

[0038] S5: Add the remaining amount of magnesium oxide, stearic acid, vulcanized paste, diatomaceous earth, sericite, rutile titanium dioxide, light calcium carbonate, talcum powder, and ultraviolet stabilizer to the masticated product obtained in S4 in order , Antioxidant, extrud...

Embodiment 2

[0041] Prepare as follows:

[0042] S1: Weigh each raw material according to the ratio of parts by weight;

[0043] S2: Mix gasoline, ethyl acetate, and acetone to form a mixed solvent;

[0044] S3: the tert-butylphenol-formaldehyde resin is dissolved in the mixed solvent that is based on 35% of the tert-butylphenol-formaldehyde resin weight part in the mixed solvent that S2 obtains, then adds the magnesium oxide based on 5% of the tert-butyl-phenol-formaldehyde resin weight part, at room temperature Under stirring 6 hours, carry out chelation reaction, obtain viscous shape chelate;

[0045] S4: Mix butyl rubber and natural rubber and masticate 3 times on an open mill to obtain a masticated product;

[0046] S5: Add the remaining amount of magnesium oxide, stearic acid, vulcanized paste, diatomaceous earth, sericite, rutile titanium dioxide, light calcium carbonate, talcum powder, and ultraviolet stabilizer to the masticated product obtained in S4 in order , Antioxidant, extr...

Embodiment 3

[0049] Prepare as follows:

[0050] S1: Weigh each raw material according to the ratio of parts by weight;

[0051] S2: Mix gasoline, ethyl acetate, and acetone to form a mixed solvent;

[0052] S3: the tert-butylphenol-formaldehyde resin is dissolved in the mixed solvent that is based on 35% of the tert-butylphenol-formaldehyde resin weight part in the mixed solvent that S2 obtains, then adds the magnesium oxide based on 5% of the tert-butyl-phenol-formaldehyde resin weight part, at room temperature Stir under 7 hours, carry out chelation reaction, obtain viscous shape chelate;

[0053] S4: Mix butyl rubber and natural rubber and masticate 4 times on an open mill to obtain a masticated product;

[0054] S5: Add the remaining amount of magnesium oxide, stearic acid, vulcanized paste, diatomaceous earth, sericite, rutile titanium dioxide, light calcium carbonate, talcum powder, and ultraviolet stabilizer to the masticated product obtained in S4 in order , Antioxidant, extrud...

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Abstract

The invention discloses an environment-friendly sealant which comprises, by weight, 31-35 parts of butyl rubber, 29-31 parts of natural rubber, 70-84 parts of gasoline, 50-60 parts of ethyl acetate, 30-36 parts of acetone, 3-6 parts of rutile titanium dioxide, 12-14 parts of light calcium carbonate, 50-70 parts of talcum powder, 10-15 parts of stearic acid, 20-23 parts of sericite, 32-38 parts of petroleum resin, 10-13 parts of vulcanized paste, 30-50 parts of infusorial earth, 50-60 parts of tert butyl phenolic resin and coumarone resin, 3-4 parts of magnesium oxide, 0.4-0.6 part of ultraviolet stabilizers and 0.05-0.1 part of antioxidants. The environment-friendly sealant has the advantages that the sealant with high viscosity, denseness, solid content and bonding strength and aging resistance is obtained by optimizing components, usage of harmful substances is reduced, environmental pollution is decreased, and the preparation process is updated according to the optimized components.

Description

technical field [0001] The invention belongs to the technical field of sealants, and in particular relates to an environment-friendly 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 tem...

Claims

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Application Information

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IPC IPC(8): C09J123/22C09J107/00C09J157/02C09J161/08C09J145/02C09J11/08C09J11/06C09J11/04
Inventor 胡昌悌
Owner WUHU SHUANGBAO BUILDING MATERIAL
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