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Environmentally friendly adhesive and its preparation method and application

An environmentally friendly, adhesive technology, applied in the direction of adhesives, etc., can solve the problems of difficult decomposition and toxicity of organic resin adhesives, and achieve the effects of short production cycle, mature technology and low cost.

Active Publication Date: 2021-06-01
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a kind of non-toxic and environment-friendly binder and its preparation method for existing organic resin binders which are hard to decompose and toxic.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 1mol of 3-aminopropyl-trimethoxysilane, 1mol of phosphoric acid and 1000ml of deionized water into a 2000ml three-necked flask, heat to reflux and stir for 15 hours, and concentrate to 20wt% transparent sol, which is an environmentally friendly binder ;

[0025] Keep the polystyrene resin particles at 60°C for 20 minutes to obtain foamed polystyrene foam particles, and then put them in the air for aging; Styrene foam particles and 1 part of expanded graphite flame retardant are mixed and stirred evenly, poured into a mold, hot-pressed at a temperature of 80°C and a pressure of 10Mpa for 5 minutes, and finally put into an oven to dry completely to obtain an environmentally friendly flame-retardant polystyrene foam material. The oxygen index of the material is 28%, the vertical combustion grade passes the V-0 grade, and the thermal conductivity is 0.03W / (m·K).

Embodiment 2

[0027] Add 0.1mol of 3-aminopropyl-triethoxysilane, 0.1mol of phosphoric acid and 100ml of deionized water into a 250ml three-neck flask, heat to reflux and stir for 18 hours, and concentrate to 40wt% transparent sol, which is environmentally friendly binder;

[0028] Keep the polystyrene resin particles at 100°C for 10 minutes to obtain foamed polystyrene foam particles, and then put them in the air for aging; Styrene foam particles and 2 parts of starch flame retardant are mixed and stirred evenly, poured into a mold, hot-pressed at a temperature of 100°C and a pressure of 10Mpa for 8 minutes, and finally put into an oven to dry completely to obtain an environmentally friendly flame-retardant polystyrene foam Material. The oxygen index of the material is 30%, the vertical combustion grade passes the V-0 grade, and the thermal conductivity is 0.035W / (m·K).

Embodiment 3

[0030] Add 0.5mol of 3-aminopropyl-triethoxysilane, 0.5mol of phosphoric acid and 500ml of deionized water into a 1000ml three-neck flask, heat to reflux and stir for 20 hours, and concentrate to 40wt% transparent sol, which is environmentally friendly binder;

[0031] Keep the polystyrene resin particles at 120°C for 12 minutes to obtain foamed polystyrene foam particles, and then put them in the air for aging; Styrene foam particles and 3 parts of ammonium polyphosphate flame retardant are mixed and stirred evenly, poured into a mold, hot-pressed at a temperature of 110°C and a pressure of 10Mpa for 10 minutes, and finally put into an oven to dry completely to obtain an environmentally friendly flame-retardant polystyrene Vinyl foam. The oxygen index of the material is 32%, the vertical combustion grade passes the V-0 grade, and the thermal conductivity is 0.037W / (m·K).

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Abstract

The present invention relates to an environment-friendly binder and its preparation method and application, comprising the following steps: S1 preparing polystyrene foam particles: first obtain foamed polystyrene foam particles, and then put them into the air for aging; S2 Mix and stir the environment-friendly adhesive, polystyrene foam particles and flame retardant evenly; pour it into the mold, heat press at a temperature of 80-120°C and a pressure of 10Mpa for 5-20 minutes, and finally dry completely to be environmentally friendly Type flame retardant polystyrene foam insulation. Compared with the prior art, the present invention has the following beneficial features: 1. It has the advantages of being green and non-toxic; 2. The process is mature, the production cycle is short, the cost is low, it is easy to industrialize, and it has broad application prospects; 3. It has good resistance Flammability; 4. Less addition of flame retardant is required, the oxygen index of polystyrene foam can reach 28-38%, and the vertical combustion level passes V-0 level.

Description

technical field [0001] The invention belongs to the technical field of building thermal insulation materials and their preparation, and in particular relates to an environment-friendly adhesive and its preparation method and application. Background technique [0002] Polystyrene foam has been widely used in the field of building insulation materials due to its low thermal conductivity, low density, and stable chemical properties. However, polystyrene foam is very flammable. After being ignited by heat, the fire spreads rapidly and is difficult to extinguish, causing great harm to the national economy and personal safety. Hexabromocyclododecane is currently the most widely used flame retardant for polystyrene foam, but it has been banned by the United Nations due to the release of toxic substances when burned. Therefore, how to prepare environmentally friendly flame-retardant polystyrene foam has become a research hotspot. [0003] Patent No. CN104151729A discloses a flame-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/08C08L25/06C08L83/08C08L3/02C08L5/08C08K7/24C08K5/053C08K3/32C08J9/236
CPCC08J9/0061C08J9/0066C08J9/236C08J2325/06C08J2403/02C08J2405/08C08J2483/08C08K5/053C08K7/24C08K2003/323C09J183/08
Inventor 朱宗民潘志权周红程清蓉
Owner WUHAN INSTITUTE OF TECHNOLOGY