Antibacterial and flame-retardant modified glass cement and preparation method thereof

A glass glue and modification technology, which is applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of affecting the bonding performance, needing to be sealed for storage, and easy to condense, so as to save dosage and antibacterial Ability to improve, the effect of a firm bond

Active Publication Date: 2019-06-14
广东华成新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The glass glue prepared by the present invention is solid and easy to carry. When in use, the deprotonation of triethylamine directly causes the silver thiol to precipitate to form an ion complex and then dissolve to form a viscous colloid, which can then be used directly. It solves the problem that the e...

Method used

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  • Antibacterial and flame-retardant modified glass cement and preparation method thereof
  • Antibacterial and flame-retardant modified glass cement and preparation method thereof
  • Antibacterial and flame-retardant modified glass cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation of diamino flame retardant monomer, the specific preparation process is as follows:

[0034] Step 1: Add 150g of 4-carboxybenzaldehyde and 500g of absolute ethanol into the reaction kettle, raise the temperature to 90°C and then add 197g of diphenylmethylamine and 79.2g of hypophosphorous acid to it, react at constant temperature for 12-14h, and then prepare the product Concentrate, the residue is washed with saturated brine, and then extracted with ethyl acetate, the obtained organic phase is dried and concentrated, and then purified by column chromatography with ethyl acetate / petroleum ether to obtain product A;

[0035] Step 2: Add product A to a hydrogen bromide solution with a concentration of 48%, raise the temperature to 80° C. for reflux reaction for 7 hours, and then distill the obtained product under reduced pressure to obtain product B;

[0036] Step 3: Add 100g of the product B prepared in step 2 to hot water at a temperature of 70°C, then ad...

Embodiment 2

[0041] The preparation of diamino flame retardant monomer, the specific preparation process is as follows:

[0042] Step 1: Add 150g of 4-carboxybenzaldehyde and 500g of absolute ethanol into the reaction kettle, raise the temperature to 90°C and then add 197g of diphenylmethylamine and 79.2g of hypophosphorous acid to it, react at constant temperature for 12-14h, and then prepare the product Concentrate, the residue is washed with saturated brine, and then extracted with ethyl acetate, the obtained organic phase is dried and concentrated, and then purified by column chromatography with ethyl acetate / petroleum ether to obtain product A;

[0043] Step 2: Add product A into a hydrogen bromide solution with a concentration of 48%, raise the temperature to 80° C. for reflux reaction for 7 hours, and then distill the obtained product under reduced pressure to obtain a diamino flame-retardant monomer;

Embodiment 3

[0045] The specific preparation method of antibacterial flame retardant modified glass glue is as follows:

[0046] In the first step, add 460g of the diamino flame retardant monomer prepared in Example 1 and 760g of the diacyl chloride-based monomer prepared in Example 1 into 5kg of water at the same time, raise the temperature to 70°C and stir for 10-12h, then raise the temperature to 90°C to Add 130g of tetramethylammonium fluoride, react at constant temperature for 4 hours, and then conduct evaporation and crystallization to obtain a flame-retardant polymer;

[0047] In the second step, the flame-retardant polymer prepared in the first step is added to 4kg of water, and 180g of 2,3-dimercapto-1-propanol is added thereto at the same time, the temperature is raised to 50°C, and then 80g of catalyst triethylamine is added thereto, After stirring and mixing evenly, add 260 g of toluene diisocyanate dropwise into the reaction vessel, react at constant temperature for 3 hours, c...

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Abstract

The invention discloses an antibacterial and flame-retardant modified glass cement. The antibacterial and flame-retardant modified glass cement comprises, by weight, 46-51 parts of a diamino flame-retardant monomer, 76-84 parts of a diacylchloro monomer, 13-14 parts of tetramethylammonium fluoride, 18-20 parts of 2,3-dimercapto-1-propanol, 8-10 parts of triethylamine, 26-29 parts of toluene diisocyanate, 4.8-4.9 parts of a silver nitrate solution having a concentration of 10 mg/g, and a proper amount of water. The glass cement prepared in the invention is solid and portable; and when the glasscement is used, the deprotonation effect of the triethylamine directly precipitates silver thiolate to form an ionic complex can be dissolved in order to form a viscous colloid, and the viscous colloid can then be used directly, so the problem that existing glass cements are colloid, needs to be stored in a sealing manner, and are prone to coagulate and affect the bonding property after being opened and remained is solved.

Description

technical field [0001] The invention belongs to the field of glass glue preparation, and relates to antibacterial and flame-retardant modified glass glue and a preparation method thereof. Background technique [0002] Glass glue is a commonly used adhesive in the family. It is used to bond and seal various glass and other substrates. When glass glue is often in a humid environment, it is easy to breed bacteria, causing mold and discoloration on the surface of the glass glue, which not only affects the glass. The bonding performance of the glue affects the appearance at the same time. At the same time, the glass glue is easy to burn at high temperature, causing the bonding part to detach. The existing antibacterial and flame retardant protection is directly achieved by adding flame retardants and antibacterial agents, but the existing flame retardants The dispersion of antibacterial agent and antibacterial agent is not uniform after direct addition, resulting in the reduction...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J177/06C09J11/04C08G69/48C08G69/42C08G18/76C08G18/60C08G18/65C08G18/38
Inventor 不公告发明人
Owner 广东华成新材料有限公司
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