Preparation method of single-component polyurethane foam joint mixture

A technology of polyurethane foam and caulking agent, which is applied in the direction of chemical instruments and methods, and other chemical processes, can solve the problems of affecting the construction effect, not easy to master and control, and the increase of material cost and labor cost, so as to save labor cost , Promote rapid curing and setting, and reduce material costs

Active Publication Date: 2015-04-15
天元(宜昌)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is not easy for construction workers to grasp and control how much material to spray out. If too much material is sprayed out, excess expansion will be produced, which will affect the construction effect and need to be cut off, resulting in increased material costs and labor costs.

Method used

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  • Preparation method of single-component polyurethane foam joint mixture
  • Preparation method of single-component polyurethane foam joint mixture
  • Preparation method of single-component polyurethane foam joint mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Synthetic Composite Catalyst

[0031] In a 200ml three-necked flask equipped with a constant temperature water bath, a thermometer, a dropping funnel, and mechanical stirring, add 65.6 grams of 2-methylhexanoic acid, and start stirring. In the dropping funnel, add 77 grams of 1,8-diazabicyclo-bicyclo(5,4,0)-7-undecene, slowly add it dropwise into the three-necked flask at a controlled temperature of 10°C, and drop it over 30 minutes complete. The temperature was raised to 90° C., and after 2 hours of reaction, the temperature was lowered to room temperature and filtered to obtain a composite catalyst.

[0032] Preparation of composite polyethers

[0033] formula:

[0034]

[0035] Preparation

[0036] In a 500ml three-neck flask, after adding various raw materials in sequence according to the above formula, stir for 1 hour at room temperature.

[0037] Made of combined polyether.

[0038] Preparation of polyurethane foam sealant

[0039] In a 750mL aerosol can...

Embodiment 2

[0042] Synthetic Composite Catalyst

[0043] In a 200ml three-necked flask equipped with a constant temperature water bath, a thermometer, a dropping funnel, and mechanical stirring, add 65.6 grams of 2-methylhexanoic acid, and start stirring. In the dropping funnel, add 77 grams of 1,8-diazabicyclo-bicyclo(5,4,0)-7-undecene, and slowly drop it into the three-necked flask at a controlled temperature of 14°C for 28 minutes Drip finished. Raise the temperature to 85°C, react for 2 hours, cool down to room temperature, and filter to obtain a composite catalyst.

[0044] Preparation of composite polyethers

[0045] formula:

[0046]

[0047] Preparation

[0048] In a 500ml three-neck flask, after adding various raw materials in sequence according to the above formula, stir for 1 hour at room temperature.

[0049] Made of combined polyether.

[0050] Preparation of polyurethane foam sealant

[0051] In a 750mL aerosol can, add 300g of combined polyether and 240g of polyme...

Embodiment 3

[0054] Synthetic Composite Catalyst

[0055] In a 200ml three-necked flask equipped with a constant temperature water bath, a thermometer, a dropping funnel, and mechanical stirring, add 65.6 grams of 2-methylhexanoic acid, and start stirring. In the dropping funnel, add 77 grams of 1,8-diazabicyclo-bicyclo(5,4,0)-7-undecene, and slowly drop it into the three-necked flask at a controlled temperature of 12°C for 33 minutes Drip finished. The temperature was raised to 93° C., and after 2.5 hours of reaction, the temperature was lowered to room temperature and filtered to obtain a composite catalyst.

[0056] Preparation of composite polyethers

[0057] formula:

[0058]

[0059] In a 500ml three-neck flask, after adding various raw materials in sequence according to the above formula, stir for 1 hour at room temperature.

[0060] Made of combined polyether.

[0061] Preparation of polyurethane foam sealant

[0062] In a 750mL aerosol can, add 300g of combined polyether ...

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Abstract

The invention relates to a preparation method of a single-component polyurethane foam joint mixture, and specifically provides a preparation method of a single-component polyurethane foam joint mixture capable of achieving one-time foaming and with super-long linear meter. The method comprises preparation of a composite catalyst and a combined polyether. The method is simple and easy to carry out. The invention adopts dual catalyst to strengthen gel catalytic effect, and can promote rapid curing and fixing of sprayed foam and realize one-time foaming and fixing. A coupling agent is added to react with polyol containing hydroxyl and amino and polymer to obtain silane groups with moisture curing crosslinking mechanism for accelerating foam curing. The added organic solvent reduces material viscosity and density of unit foam material; and under the effect of fast curing reaction of composite catalyst and coupling agent, the linear meter the foam is increased. The method has the realizes easy control of construction operation and spray amount, saves labor cost, increases foaming volume of the sprayed foam, increases construction area to 1.39-1.89 times that of the ordinary joint mixture, reduces the material cost, and solves the problems of the existing products.

Description

technical field [0001] The invention relates to a preparation method of a one-component polyurethane foam caulking agent, in particular to a preparation method of a one-component polyurethane foam caulking agent capable of one-time foaming and super-extending meters. technical background [0002] One-component polyurethane foam sealant is a special polyurethane product that packs and stores polyurethane prepolymer, catalyst, foaming agent, propellant and other components in the form of a single aerosol can. Existing styrofoam products can instantly spray out foamy polyurethane material when in use, and the foam material will expand under the action of pressure, that is, to achieve one-time foaming, and then react after absorbing moisture in the air and releasing carbon dioxide , and then carry out secondary foaming, and the foam is cured to achieve the purpose of filling and sealing the building joints or holes or the installation and fixing of the suit door. [0003] Due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/42C08G18/16C08K5/5455C08J9/14C08J3/24C09K3/10C08G101/00
CPCC08G18/161C08G18/168C08G18/2063C08G18/2081C08G18/4018C08G18/42C08G18/4812C08G2101/00C08J9/141C08J2203/14C08J2375/08
Inventor 张洪秀杨录新高俊苏畅张磊周颖刘连茹陈海云
Owner 天元(宜昌)新材料科技有限公司
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