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Supercritical micro-foaming polyurethane material

A polyurethane material, supercritical technology, applied in the field of polyurethane foam materials, can solve the problems of poor flame retardancy, poor mechanical properties of polyurethane, easy to cause fire, etc., to improve mechanical properties and flame retardancy, solve cracking, and improve mechanical properties performance effect

Inactive Publication Date: 2021-06-01
昕亮科技(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although polyurethane microcellular foam materials currently on the market have good mechanical properties, they have poor flame retardancy and are prone to fire
Most of the current research is to improve its flame retardant effect by adding flame retardants to polyurethane alone, but the addition of flame retardants often leads to poor mechanical properties of polyurethane, which is difficult to meet the application in the market. The present invention provides a A supercritical micro-foamed polyurethane material, which not only improves the mechanical properties of the foamed material, but also improves the mechanical properties of the foamed material

Method used

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  • Supercritical micro-foaming polyurethane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The supercritical micro-foamed polyurethane material includes the following raw materials in parts by weight: 30 parts of polycaprolactone diol, 36 parts of dodecylbenzene-2,4-diisocyanate, 6 parts of ricinoleyl alcohol, 1 part of dibutyltin dilaurate 0.5 parts of vinyltriethoxysilane, 2 parts of cyclopentane, 1.5 parts of surfactant, and 1.5 parts of nucleating agent.

[0046] Described tensio-active agent is epoxidized soybean oil;

[0047] The nucleating agent is rectorite.

[0048] The preparation method of described supercritical micro-foaming polyurethane material, comprises the following steps:

[0049] S1. Weigh respectively by weight: polycaprolactone diol, dodecylbenzene-2,4-diisocyanate, ricinoleyl alcohol, dibutyltin dilaurate, vinyltriethoxysilane, cyclopentyl alkanes, surfactants, nucleating agents;

[0050] S2, polycaprolactone diol, dodecylbenzene-2,4-diisocyanate, dibutyltin dilaurate, vinyltriethoxysilane, nucleating agent are mixed, in N 2 Heating...

Embodiment 2

[0054] The supercritical micro-foamed polyurethane material includes the following raw materials in parts by weight: 30 parts of polycaprolactone diol, 36 parts of dodecylbenzene-2,4-diisocyanate, 6 parts of ricinoleyl alcohol, 1 part of dibutyltin dilaurate 0.5 parts of vinyltriethoxysilane, 2 parts of cyclopentane, 1.5 parts of surfactant, and 1.5 parts of nucleating agent.

[0055] Described tensio-active agent is epoxidized soybean oil;

[0056] The nucleating agent is modified rectorite;

[0057] The preparation method of the modified rectorite: (1) Mix 5 parts by weight of phosphoric acid and 10 parts by weight of urea, raise the temperature to 120°C, stir at 1200rpm for 40min, lower the temperature to 80°C, add 4 parts by weight of Stirstone, 15 parts by weight of deionized water, and 1 part by weight of a modifying agent were stirred at 80° C. for 6 hours at 500 rpm. After the reaction, the product was put into an oven at 180° C. for curing for 3 hours to obtain modif...

Embodiment 3

[0064] The supercritical micro-foamed polyurethane material includes the following raw materials in parts by weight: 30 parts of polycaprolactone diol, 36 parts of dodecylbenzene-2,4-diisocyanate, 6 parts of ricinoleyl alcohol, 1 part of dibutyltin dilaurate 0.5 parts of vinyltriethoxysilane, 2 parts of cyclopentane, 1.5 parts of surfactant, and 1.5 parts of nucleating agent.

[0065] Described tensio-active agent is modified epoxy soybean oil;

[0066] The preparation method of the modified epoxy soybean oil: mix 25 parts by weight of epoxy soybean oil and 1 part by weight of 2mol / L potassium hydroxide solution, stir at 650rpm for 10min, add 10 parts by weight of chlorinated paraffin and heat to 60°C, Insulate for 40 minutes, add 1 part by weight of cetyltrimethylammonium bromide, stir at 700 rpm for 30 minutes, raise the temperature to 80° C. and continue stirring for 60 minutes, and naturally cool to room temperature to obtain modified epoxy soybean oil.

[0067] The nucle...

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Abstract

The invention discloses a supercritical micro-foaming polyurethane material, and belongs to the technical field of polyurethane foaming materials. The supercritical micro-foaming polyurethane material is prepared from the following components in parts by weight: 20-40 parts of polyester polyol, 20-50 parts of dodecylbenzene-2, 4-diisocyanate, 2-10 parts of castor oil alcohol, 0.5-3 parts of dibutyltin dilaurate, 0.2-2 parts of an elasticity regulator, 1-4 parts of a surfactant, 0.5-2 parts of an accelerant and 1-3 parts of a nucleating agent. The supercritical micro-foaming polyurethane material provided by the invention can well solve the problems of cracking, poor flexibility, compression deformation and poor flame retardance of a material. By adding the nucleating agent and the surfactant, the polyurethane material can be promoted to form uniform and stable foaming micropores. Meanwhile, the nucleating agent is a composite material composed of graphene, ammonium polyphosphate and rectorite, so that the mechanical property and flame retardant property of the foam material can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam materials, in particular to a supercritical micro-foam polyurethane material. Background technique [0002] Polyurethane foam is a solid-gas composite material in which the continuous solid phase acts as a mechanical structure and a gas-phase container in a closed-cell structure. The structure of the matrix and the shape of the foam determine its mechanical properties. Its main feature is porosity, combined with the excellent mechanical properties of polyurethane materials, making polyurethane foam materials have the characteristics of low density, high specific strength, and wide range of performance adjustments. Compared with unfoamed materials and other ordinary foamed plastics, the mechanical properties of polyurethane foamed materials are more excellent. It has the advantages of uniform cells, acid and alkali corrosion resistance, odorless, good heat insulation, and good air-permeab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/12C08G18/66C08G18/42C08G18/36C08K3/04C08K3/32C08K9/02C08K9/04C08K3/34C08L75/06C08L91/00
CPCC08G18/36C08G18/4238C08G18/4277C08G18/6662C08J9/0066C08J9/009C08J9/122C08J2203/06C08J2203/08C08J2375/06C08J2491/00C08K3/32C08K3/346C08K9/02C08K9/04C08K2003/323C08K3/042
Inventor 胡长昕
Owner 昕亮科技(深圳)有限公司
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