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Method for manufacturing low toxic environment-protective common sponge

A low-toxicity and environmentally friendly technology, applied in the foam field, can solve the problems of biological hazards and human body hazards, and achieve the effects of low toxicity and simple operation.

Inactive Publication Date: 2008-08-27
张正杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, all PU low-density flexible foams are produced by TDI (toluene diisocyanate). TDI itself is a highly toxic substance, which is quite harmful to the human body, and hydrogen cyanide, cyanide, etc. are produced during the production process. Toxic gas, very harmful to living things

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Manual foaming, using PPG (polyether polyol) 50%, POP (grafted polyether polyol) 80%, H 2 O (water) 2%, Silicon (silicone oil, surfactant, foam stabilizer) 3%, T-9 (metal catalyst) 0.5% and A-1 or A-33 (tertiary amine catalyst) 0.3%, ethylene glycol , diethanolamine, stir to make a paste for later use; then add 80% of liquefied MDI (diphenylmethane diisocyanate) together, stir quickly and evenly to get the general foam of MDI.

Embodiment 2

[0015] Adopt continuous foaming method, use PPG (polyether polyol) 80%, POP (graft polyether polyol) 30%, H 2 O (water) 1%, Silicon (silicone oil, surfactant, foam stabilizer) 1%, T-9 (metal catalyst) 0.1% and A-1or A-33 (tertiary amine catalyst) 0.5%, low molecular weight and high OH Glycerol and triethanolamine are stirred into a paste for later use; then add 50% of liquefied MDI (diphenylmethane diisocyanate), 50% of MDI polymer and 50% of modified MDI, and stir quickly Evenly, you can get the general foam of MDI.

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PUM

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Abstract

The invention relates to the foamed plastic technical field, in particular to a process for producing MDI common foamed plastic with low toxic and environmental-friendly, which adopts the hand foaming and continuous foaming method, uses 0-100% PPG (polyether polyatomic alcohol), 0-100% POP (graft polyether polyatomic alcohol), 0.01-4% H2O, 0.3-0.5 Silicon (silicon oil, interfacial active agent and ), 0.01-0.8% T-9 (metallic catalyst) and 0.01-0.8% A-1 or A-33 (tertiary amine catalyst), and alcohols whose low molecular weight is higher than OH value, stirs cross linking agent into pasty for backup, then adds with 0-100% liquefied MDI and or 0-100% MDI polymer and or 0-100% modified MDI, and obtains common foamed plastic of MDI through rapidly stirring. The production process of the invention has simple operation, and the foamed plastic which is produced has low toxic and meets the environmental-friendly requirements.

Description

Technical field: [0001] The invention relates to the technical field of foam, in particular to a method for manufacturing low-toxicity environment-friendly MDI general foam. Background technique: [0002] At present, all PU low-density flexible foams are produced by TDI (toluene diisocyanate). TDI itself is a highly toxic substance, which is quite harmful to the human body, and hydrogen cyanide, cyanide, etc. are produced during the production process. Toxic gas, very harmful to living things. Invention content: [0003] The purpose of the present invention is to provide a kind of method of manufacturing the environmental protection MDI general foam of low toxicity, and this method process is simple, easy to operate. [0004] The above-mentioned method of manufacturing low-toxic environmentally friendly MDI general foam is to use manual foaming and continuous foaming methods, using PPG (polyether polyol) 0-100%, POP (grafted polyether polyol) 0-100% , H 2 O (water) 0.01...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/08C08G18/66C08G101/00
Inventor 张正杰
Owner 张正杰
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