Natural plant oil based hydrophile low-resilience foam and preparation method thereof

A natural plant, oil-based hydrophilic technology, which is applied in the field of preparation of natural vegetable oil-based hydrophilic slow-rebound foam, can solve the problems of low open porosity, high temperature sensitivity of foam, sultry heat and the like, and achieves high air permeability, Environmentally friendly and low residue effects

Active Publication Date: 2010-12-15
HONK POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the insufficient amount of isocyanate, the residue of reactant
[0006] At the same time, the closed-cell problem is common in the process of preparing slow-rebound foam by traditional methods, which makes the side of the molded foam easy to crack when the mold is opened, and also caus

Method used

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  • Natural plant oil based hydrophile low-resilience foam and preparation method thereof
  • Natural plant oil based hydrophile low-resilience foam and preparation method thereof
  • Natural plant oil based hydrophile low-resilience foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A. Mix polyols in proportion to form a polyol mixture

[0046] POLYOL 1: 50% POLYOL 2: 30%

[0047] POLYOL 3: 20%

[0048] B. Based on 100 parts of the above polyol mixture, 2 parts of glycerin, 2 parts of Momentive L3002 silicone oil, 1.5 parts of water, 2 parts of surfactant, 0.6 parts of triethylenediamine, bis(2-methylamino) Ethyl) ether, a mixture of retarded catalysts dissolved in the above polyol mixture, as A material.

[0049] C. According to the ratio that the isocyanate index is 75, take the urethane-modified MDI (material B) and react with the material A at 25° C. to prepare a natural vegetable oil-based hydrophilic polyurethane slow-rebound bulk foam.

[0050] The natural vegetable oil-based hydrophilic slow-rebound foam produced by the invention has high air permeability, good heat dissipation and low temperature sensitivity.

Embodiment 2

[0052] A. Mix polyols in proportion to form a polyol mixture

[0053] POLYOL 1: 50% POLYOL 2: 30%

[0054] POLYOL 3: 20%

[0055] B. Based on 100 parts of the above polyol mixture, 2 parts of glycerin, 1.5 parts of Momentive L3002 silicone oil, 1.8 parts of water, 2 parts of surfactant, 0.8 parts of triethylenediamine, bis(2-methylaminoethyl) Base) ether, the mixture of delayed catalyst is dissolved in the above polyol mixture, as A material.

[0056]C. According to the ratio of isocyanate index to 75, take carbodiimide-modified MDI (material B), inject it into the mold after being uniform with material A at 25°C, and make natural vegetable oil-based hydrophilic polyurethane slow rebound after aging and demoulding Molded foam.

[0057] The natural vegetable oil-based hydrophilic slow-rebound foam produced by the invention has high air permeability, good heat dissipation and low temperature sensitivity.

Embodiment 3

[0059] A. Mix polyols in proportion to form a polyol mixture

[0060] POLYOL 1: 45% POLYOL 2: 30%

[0061] POLYOL 3: 5% POLYOL 4: 20%

[0062] B. Based on 100 parts of the above polyol mixture, 2 parts of glycerin, 2 parts of Momentive L3002 silicone oil, 1.5 parts of water, 2 parts of surfactant, 0.6 parts of triethylenediamine, bis(2-methylamino) Ethyl) ether, a mixture of retarded catalysts dissolved in the above polyol mixture, as A material.

[0063] C. According to the ratio of isocyanate index to 100, take urethane-modified MDI (material B) and react with material A at 25°C to prepare natural vegetable oil-based hydrophilic polyurethane slow-rebound bulk foam.

[0064] The natural vegetable oil-based hydrophilic slow-rebound foam produced by the invention has low residue, high air permeability, good heat dissipation and low temperature sensitivity.

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Abstract

The invention discloses a natural plant oil based hydrophile low-resilience foam which is prepared from a composite and isocyanate, wherein the composite comprises the following components of 100 parts of pluronic polyols, 0-8 parts of cross-linking agent or chain extender, 0-3 parts of catalyst, 0-4 parts of foam stabilizing agent, 0.2-10 parts of foaming agent, 0-5 parts of interface activating agent and 60-100 parts of isocyanate index. A preparation method comprises the steps of: firstly, stirring uniformly the composite, and then adding the isocyanate according to the proportion; secondly, foaming in a die in a closed state to obtain molding foam, or freely foaming in a foaming tank; and cutting to obtain blocky foam after ageing. The regenerable natural plant oil polyalcohol is used in the invention and can be used in various isocyanate systems, and a metal catalyst can not be completely used, therefore, the environment is protected; and 100 parts of isocyanate index can be used, therefore, slow resilience effect and low residue are obtained. The low-resilience foam produced in the invention has the advantages of environment protection, high ventilation, better thermal diffusion and comfort and low temperature sensitivity.

Description

technical field [0001] The invention relates to a method for preparing natural vegetable oil-based hydrophilic slow-rebound foam, and belongs to the technical field of polyurethane foam preparation. Background technique [0002] As we all know, polyurethane slow rebound foam is called memory foam and viscoelastic foam. Its unique feature is that it can conform to the shape of the load, maximize the contact area, minimize the stress gradient, and obtain the concentrated point Relief, to achieve the distribution of force, no local squeeze and tingling. Therefore, slow rebound foam is widely used as pillows, mattresses, cushions, etc., which is beneficial to human blood circulation and is a high-comfort health care foam. [0003] At present, most of the polyols used in the production of polyurethane slow-rebound foam come from petrochemical products. However, as a non-renewable petroleum resource, there will always be a day when it will be exhausted. With the ups and downs of...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L75/06C08L75/08C08L75/14C08G18/67C08G18/66B29C44/02C08G101/00
Inventor 杨洪启朱琼蓉吴文杰林凯旋
Owner HONK POLYMER
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