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Method for preparing styrofoam

A technology of foaming glue and preparation steps, applied in the direction of non-polymer adhesive additives, adhesive additives, polymer adhesive additives, etc., can solve the problems of unstable bubbles, low porosity, poor air permeability, etc.

Inactive Publication Date: 2017-02-15
SHENYANG WANHE PLASTIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing styrofoam has the disadvantages of unstable bubbles, low porosity, and poor air permeability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In parts by weight, take 100 parts of polyurethane pressure-sensitive adhesive, add 1 part of epoxy-modified organosilicon compound, 0.4 part of ethoxy-modified trisiloxane, 0.5 part of NUVIS FX 1010 thickener, 6 parts of polyvinyl alcohol , 18 parts of nano-calcium carbonate, 33 parts of water, 0.04 part of tetramethylguanidine trifluoromethane sulfonate, 0.05 part of tetramethylguanidine lactate, are added to the foaming tank together, and the super The critical carbon dioxide is foamed, and the foaming time is 3 hours to obtain a styrofoam.

Embodiment 2

[0027] In parts by weight, take 100 parts of silicone pressure-sensitive adhesive, add 0.5 part of alkoxy functional silane oligomer, 0.1 part of ethoxy-modified trisiloxane, 0.1 part of NUVIS FX 1035 thickener, 1 part of poly Vinyl formal, 10 parts of corundum, 10 parts of water, 0.01 part of tetramethylguanidine trifluoromethane sulfonate, 0.01 part of tetramethylguanidine lactate, are added together into the calender pumping foaming furnace, through the use of micro The channel reactor is fed with supercritical carbon dioxide for foaming, and the foaming time is 0.5 h to obtain a foaming glue.

Embodiment 3

[0029] In parts by weight, take 100 parts of the polyolefin pressure-sensitive adhesive, add 2 parts of epoxy-modified silicone polymer compound, 1 part of ethoxy-modified trisiloxane, and 1 part of NUVIS FX 1100 thickener, 10 parts of polyvinylpyrrolidone, 30 parts of silicon carbide, 50 parts of water, 0.1 part of tetramethylguanidine trifluoromethane sulfonate, 0.1 part of tetramethylguanidine lactate are added together into the extrusion coating machine, through the use of microchannels Nitrogen gas was fed into the reactor for foaming, and the foaming time was 5 hours to obtain a styrofoam.

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Abstract

The invention provides a method for preparing a styrofoam. The method includes the following steps: preparing 100 parts by weight of pressure-sensitive adhesive; adding 0.5-2 parts by weight of an adhesion promoter, 0.1-1 part by weight of a wetting and dispersing agent, 0 .1-1 part by weight of thickener, 1-10 parts by weight of excipient, 10-30 parts by weight of filler, 10-50 parts by weight of water, 0.01-0.1 part by weight of tetramethylguanidine trifluoromethanesulfonate and 0.01-0.1 parts by weight of tetramethylguanidine lactate in the pressure-sensitive adhesive; adding the mixture in a foaming device commonly used in the field of styrofoam preparation, such as a foaming tank, a calender film suction foaming furnace, an extrusion lamination machine and a screw extruder; passing air through a microchannel reactor to the foaming device for foaming to obtain the styrofoam.

Description

technical field [0001] The invention relates to a method for preparing an adhesive, in particular to a method for preparing a styrofoam. Background technique [0002] Existing general rubber and plastic styrofoam, such as EVA, PU, ​​TPR, PVC and other materials foamed and molded, is soft and elastic through its material compression, and is often used in chair cushions, mattresses, midsoles of shoes, and clothing. Gaskets and other products are used in various fields. However, the rubber-plastic foam pad material itself is not breathable and ventilated. Therefore, in the use of many commodities, it is necessary to design a breathable structure to meet the ventilation and hygiene requirements of the commodity; Need to use rubber and plastic styrofoam breathable structure. The patent foams the adhesive to prepare a viscous porous adhesive, which can be used in various dust removal fields. [0003] CN104559847A relates to a styrofoam, comprising: 360-620 parts of polyvinyl chl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J11/08C09J11/06C09J11/04
CPCC09J11/08C09J11/04C09J11/06
Inventor 王惠武
Owner SHENYANG WANHE PLASTIC IND CO LTD
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