Anti-mosquito foamed polyurethane sponge cushion containing polyvinyl alcohol

Abstract

The invention discloses an anti-mosquito foamed polyurethane sponge cushion containing polyvinyl alcohol. The sponge cushion is prepared from, by weight, 35-45 parts of microcrystalline cellulose, 140-180 parts of soybean oil, 160-200 parts of diethylene glycol, 0.13-0.27 part of potassium hydroxide, 90-100 parts of polyether polyol, 8-12 parts of a foaming agent, 1.3-1.6 parts of a foam stabilizer, 0.4-0.6 part of a catalyst, 56-68 parts of toluene diisocynate, 4-6 parts of distilled water, 4-6 parts of mint leaves, 3-4 parts of polyvinyl alcohol, 1-2 parts of stearic acid, 2-4 parts of silica sol, 0.2-0.3 part of an anti-aging agent and 1-2 parts of white oil. The prepared sponge cushion is simple in preparation process, wide in material source, excellent in performance, capable of meeting the requirements of markets and people on the sponge cushion, high in comfort, good in softness, durable in use and worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of foamed sponges, in particular to a polyvinyl alcohol-containing anti-mosquito foamed polyurethane sponge cushion. Background technique [0002] Due to its excellent comfort performance, polyurethane slow rebound foam has been widely used in household products, automobiles, shoe materials, medical equipment and other fields. Due to its unique molecular structure, polyurethane rebound foam has high comfort performance. Under a certain pressure, the polyurethane rebound foam will change its shape with the pressure, so that the pressure will be evenly distributed, and the local stress points will be reduced. After the pressure is released, its shape will slowly return to its original shape. However, due to its own closed-cell structure, the air permeability and damping and sound absorption properties of polyurethane slow rebound foam are poor. In the article "Synthesis of Soybean Oil Polyol and Performance o...

AI Technical Summary

Problems solved by technology

The soybean oil polyol-based polyurethane slow-rebound foam was prepared by using the synthesized soybean oil polyol. It is found that the use of soybean oil polyol will improve the air permeability, damping performance and sound absorption performance of polyurethane slow rebound foam, but it will lead to the decline of mechanical properties. It is proposed to increase the amount of foaming agent water or increase the isocyanate index. Soybean oil polyol-based polyurethane slow-rebound foam has high air permeability, damping performance and sound absorption performance, and its mechanical properties are improved

[0003] Although the author synthesized soybean oil polyol-based polyurethane rebound foam by modifying soybean oil, which improved the air permeability, damping performance and sound absorption performance of the slow rebound sponge, the disadvantages of poor mechanical strength and poor toughness were reduced. The service life of the material and people's comfort affect the quality of the product and cannot promote economic development, and the slow rebound sponge prepared by it can not fully meet the various needs of people for sponge pads today, so further improvement is needed. Improve its mechanical properties, thermal stability, hydrophobicity and other properties, expand application fields and prolong service life