Polyester type reticular polyurethane soft foamed plastic and preparation method thereof

Abstract

The invention discloses a polyester type reticular polyurethane soft foamed plastic and a preparation method thereof. The polyurethane soft foamed plastic is generated through the following steps of by using at least one polyester polyol as a raw material, enabling the polyester polyol and isocyanate components to be subjected to mixing, foaming and polymerization under the action of a catalyst, a foaming agent and a foam stabilizing agent to obtain polyurethane soft foamed plastic, and performing reticular treatment so as to obtain reticulated foams of which the open porosity is 99% or above. The special properties of being oil-proof, waterproof, abrasion-proof, corrosion-resistant, high-temperature-resistant, stretching-resistant and the like of polyester sponge are used, and particularly the characteristics that foam holes are uniform and the glossiness is good are used; through reticulated treatment, the reticulated foams which are uniform in holes and smooth in foam hole network are obtained. A high-temperature-resistant porous reticulated ceramic fired by the reticulated foams can be used as filtering materials in metallurgy trade, and is good in durability and economical efficiency. Compared with other products, the high-temperature-resistant porous reticulated ceramic particularly has inapproachable advantages.

Description

technical field [0001] The invention relates to a polyester reticular polyurethane soft foam and a preparation method thereof. Background technique [0002] Polyether sponge is made by polymerizing and foaming polyether and isocyanate under the action of various additives. Based on the polarity of polyether, it can form a very stable lubricant film with large adsorption and load-bearing capacity under almost all lubrication conditions, and has a low friction coefficient and strong shear resistance. And its biggest feature is that it can be easily split. In addition to the properties of polyether sponge, polyester sponge also has special properties such as oil resistance, water resistance, wear resistance, corrosion resistance, high temperature resistance, and strong stretchability. Strong knot rate and other characteristics. Therefore, polyester sponge is widely used in more advanced vehicle interiors, air conditioner filters, train oil pillows, aircraft fuel tank fillers...

AI Technical Summary

Problems solved by technology

The high-temperature-resistant porous meshed ceramics fired by reticulated foam can be used as filter materials in the metallurgical industry. Its durability and economy have incomparable advantages over other products; at present, many companies at home and abroad are Develop open-pore sponges, but the open-pore rate cannot completely exceed 99%, which has a certain impact on the performance of the product. To achieve better results, more open-pore sponges are the current solution

At the same time, due to some defects of polyether sponge, it cannot be used in ceramic molding skeleton, so only polyester sponge with uniform cells and stronger toughness can be selected.

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