Polylactic acid toughening polyurethane foaming sponge mat

A technology of foamed sponge and polylactic acid, which is applied in the field of foamed sponges, can solve the problems of poor mechanical strength, reduced service life, poor toughness, etc., and achieve improved strength and mechanical properties, alleviate environmental pollution problems, and simple preparation process Effect

CN106279612AInactive Publication Date: 2017-01-04安徽月娇家具有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-01-04
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a polylactic acid toughening polyurethane foaming sponge mat. The polylactic acid toughening polyurethane foaming sponge mat 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, 90-110 parts of polyether polyol, 8-12 parts of foaming agent, 1.3-1.6 parts of foam stabilizer, 0.4-0.6 part of catalyst, 56-68 parts of toluene diisocynate, 4-6 parts of distilled water, 3-5 parts of sodium carboxymethylcellulose, 3-4 parts of superoxide dismutase, 0.1-0.2 part of ammonium bicarbonate, 12-16 parts of polylactic acid and 0.1-0.2 part of antioxidant. The prepared sponge mat has good slow rebounding, shock absorption, sound absorption and air permeability performance, can be widely applied to various mattresses, sofas and other matching materials, and is simple in preparation process and worthy of popularization.
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Description

technical field

[0001] The invention relates to the technical field of foamed sponges, in particular to a polylactic acid toughened polyurethane foamed sponge pad. 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 of Polyurethane Slow R...

Examples

Embodiment Construction

[0014] A polylactic acid toughened polyurethane foam sponge pad, prepared from the following raw materials in parts by weight (kg): microcrystalline cellulose 35, soybean oil 140, diethylene glycol 160, potassium hydroxide 0.13, polyether polyol 90 , foaming agent 8, foam stabilizer 1.3, catalyst 0.4, toluene diisocyanate 56, distilled water 4, sodium carboxymethylcellulose 3, superoxide dismutase 3, ammonium bicarbonate 0.1, polylactic acid 12, antioxidant 0.1.

[0015] The polylactic acid toughened polyurethane foam sponge pad is prepared by the following specific steps:

[0016] (1) Disperse microcrystalline cellulose with 6 times the amount of anhydrous toluene, disperse evenly and add it to a three-necked flask, use nitrogen as a protective gas, heat in a water bath to raise the temperature to 80 °C, add octadecyl isocyanate dropwise, Among them, octadecyl isocyanate and microcrystalline cellulose are mixed according to a mass ratio of 1:5, mechanically stirred for 2 hour...