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Preparation method of high-strength water-resistant mildewproof glass cement

A glass glue and anti-mildew technology, used in non-polymer adhesive additives and adhesive additives, etc., can solve the problems of glass glue molecular structure erosion, breeding of mould sealing effect, loss of sealing effect, etc., and achieve excellent anti-mildew effect. , The effect of low production cost and low churn rate

Inactive Publication Date: 2015-09-09
饶玉明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the research on glass glue anti-mold is concentrated in the fields of aircraft, ships, electronics, machinery, etc., but it is easy to breed mold when used in water conservancy projects, water delivery projects, sewage treatment projects, etc., or long-term application in hot and humid environments. There are few reports on anti-mildew glass glue products that require extremely high sealing effects
If the glass glue used in these fields does not have anti-mold function, it is easy to breed mold, and the growth and spread of mold will erode the internal molecular structure of the glass glue, resulting in degradation and deterioration, affecting or even losing the sealing effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of high-strength water-resistant and mildew-proof glass glue, said preparation method comprising the steps of:

[0028] 1) Mix polytetrahydrofuran diol with a molecular weight between 6500-7500 and polyoxypropylene triol with a molecular weight between 8500-10000, the ratio of the two is 1:2.5, at a temperature of 130 ° C, less than Dry under 0.1MPa vacuum for 1 hour, then cool down to 80°C and add 1,6-hexamethylene diisocyanate accounting for 17% by mass of the above mixture and 0.3% by mass of the above mixture. Dibutyltin dilaurate, react In 3 hours, a polyurethane prepolymer was obtained; in the polyurethane prepolymer prepared above, 3-mercaptopropyltrimethoxysilane accounting for 19% by weight of the above polyurethane prepolymer was added, and reacted at 85° C. for 3 hours, Obtain a silane-terminated polyurethane prepolymer;

[0029]2) Combine the silane-terminated polyurethane prepolymer prepared above with dried talcum powder, diatomaceous...

Embodiment 2

[0031] A method for preparing high-strength water-resistant and mildew-proof glass glue, the preparation method comprising the steps of:

[0032] 1) Mix polytetrahydrofuran diol with a molecular weight between 6500-7500 and polyoxypropylene triol with a molecular weight between 8500-10000, the ratio of the two is 1:3, at a temperature of 120 ° C, less than Dry under 0.1MPa vacuum for 1.5 hours, then cool down to 75°C and add 1,6-hexamethylene diisocyanate accounting for 19% by mass of the above mixture and dibutyltin dilaurate accounting for 0.1% by mass of the above mixture, react 4 hours, made polyurethane prepolymer; Added 3-mercaptopropyltrimethoxysilane accounting for 17% of the above polyurethane prepolymer mass percentage in the polyurethane prepolymer prepared above, reacted at 90°C for 2.5 hours, Obtain a silane-terminated polyurethane prepolymer;

[0033] 2) Combine the silane-terminated polyurethane prepolymer prepared above with dried talcum powder, diatomaceous e...

Embodiment 3

[0035] A method for preparing high-strength water-resistant and mildew-proof glass glue, the preparation method comprising the steps of:

[0036] 1) Mix polytetrahydrofuran diol with a molecular weight between 6500-7500 and polyoxypropylene triol with a molecular weight between 8500-10000, the ratio of the two is 1:2.5, at a temperature of 130 ° C, less than Dry under 0.1MPa vacuum for 1 hour, then cool down to 80°C, add diphenylmethane diisocyanate accounting for 17% by mass of the above mixture and dibutyltin dilaurate accounting for 0.3% by mass of the above mixture, and react for 3 hours to obtain Polyurethane prepolymer; add N-cyclohexyl-3-aminopropylmethyldimethoxysilane accounting for 19% of the above polyurethane prepolymer mass percentage in the polyurethane prepolymer prepared above, and react at 85°C 3 hours, obtain the silane-terminated polyurethane prepolymer;

[0037] 2) Combine the silane-terminated polyurethane prepolymer prepared above with dried talcum powde...

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Abstract

The invention discloses a preparation method of high-strength water-resistant mildewproof glass cement, which comprises the following steps: preparing a silane-terminated polyurethane prepolymer, proportionally mixing with talcum powder, diatomite powder, lithium bentonite, bamboo charcoal granular powder, -200-mesh cerium oxide, an antioxidant, an ultraviolet absorbent, a plasticizer, a thixotropic agent, benzimidazole carbamate and benzyltrimethylammonium chloridem and adding a binding accelerator and a catalyst. The glass cement is formed by mixing the following components in parts by mass: 60-64 parts of silane-terminated polyurethane prepolymer, 7-9 parts of plasticizer, 18-20 parts of talcum powder, 15-25 parts of diatomite powder, 4-8 parts of lithium bentonite, 8-10 parts of bamboo charcoal granular powder, 2-4 parts of -200-mesh cerium oxide powder, 1.2-1.4 parts of antioxidant, 0.8-1.2 parts of ultraviolet absorbent, 0.2-0.4 part of thixotropic agent, 1-2 parts of benzimidazole carbamate, 1-2 parts of benzyltrimethylammonium chloride, 2.5-3.5 parts of binding accelerator and 0.2-0.4 part of catalyst.

Description

technical field [0001] The invention relates to the technical field of sealing materials, in particular to a preparation method of high-strength water-resistant and mildew-proof glass glue. Background technique [0002] Glass glue is a common name for glass adhesive, and it is a multi-purpose functional material with both bonding and sealing properties. It can not only prevent internal gas or liquid leakage, but also prevent external dust, moisture, water, dirt and chemicals from intruding, and can prevent mechanical vibration, impact damage or achieve the effect of sound insulation and heat insulation. Glass glue can deform with the shape of the sealing surface, is not easy to flow and has certain adhesiveness, and is widely used in the sealing of parts in civil engineering, electronic appliances, mechanical equipment, transportation appliances and other fields. Glass glue is an indispensable and important material for solving running, popping, dripping and leaking, and pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/06C09J11/04C08G18/48
Inventor 饶玉明
Owner 饶玉明
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