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Hardened polyurethane wood-imitation furniture material and preparation method

A hard polyurethane and wood imitation technology, applied in the field of hardened polyurethane imitation wood furniture materials and preparation, can solve the problems of not belonging to environmental protection foaming agent, limited application scope, etc.

Inactive Publication Date: 2019-02-15
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Polyurethane imitation wood materials are usually divided into two types: 141B foaming system and full water foaming system. Among them, 141B foaming system is the current mainstream system, but 141B foaming system is not an environmentally friendly foaming agent. Its use is restricted; the all-water foaming system is environmentally friendly and safe, and its products have the characteristics of uniform density distribution, few bubbles, and basically no dark bubbles, so the development prospect is very bright, but the all-water foaming system has a free foam density lower than 100kg / m 3 When the surface hardness of the product is lower than Shore hardness D40, there are defects when it is used in imitation wood furniture, and its scope of application is greatly limited. Therefore, it is urgent to develop a polyurethane full-water imitation wood with low density and high surface strength. material to expand its scope of application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of hardened polyurethane wood-like furniture material, comprising the following steps:

[0028] S1. Perform coupling treatment on the porous ceramic microspheres, disperse and mix them with silicon nitride nanowires and castor oil, so that the nanowires are adsorbed on the surface of the porous microspheres to form a hybrid of silicon nitride nanowires and porous ceramic microspheres; The mass ratio of silicon nitride nanowires, porous ceramic microspheres and castor oil is 6: 5:3;

[0029] S2. Put the hybrid compound obtained in step S1 and the polyether polyol with a functionality of 5 into a high mixer and mix and stir, then add foam stabilizer, foaming agent, catalyst and crosslinking agent, stir, and the stirring temperature is 20°C , the stirring time is 20min, and the stirring speed is 3000r / min to obtain component A; the foam stabilizer is a mixture of L-6950; the blowing agent is HCFC-141b; the catalyst is N,N-dimethyl Base cyclohexylamine...

Embodiment 2

[0033] A preparation method of hardened polyurethane wood-like furniture material, comprising the following steps:

[0034] S1. Perform coupling treatment on the porous ceramic microspheres, disperse and mix them with silicon nitride nanowires and castor oil, so that the nanowires are adsorbed on the surface of the porous microspheres to form a hybrid of silicon nitride nanowires and porous ceramic microspheres; The mass ratio of silicon nitride nanowires, porous ceramic microspheres and castor oil is 5: 3: 2;

[0035] S2. Put the hybrid compound obtained in step S1 and the polyether polyol with a functionality of 4.2 into a high mixer for mixing and stirring, then add foam stabilizer, blowing agent, catalyst and crosslinking agent, stir, and the stirring temperature is 16°C , the stirring time is 14min, and the stirring speed is 2700r / min to obtain component A; the foam stabilizer is a mixture of L-6950; the blowing agent is HCFC-141b; the catalyst is N, N, N' , N'-tetrameth...

Embodiment 3

[0039] A preparation method of hardened polyurethane wood-like furniture material, comprising the following steps:

[0040] S1. Perform coupling treatment on the porous ceramic microspheres, disperse and mix them with silicon nitride nanowires and castor oil, so that the nanowires are adsorbed on the surface of the porous microspheres to form a hybrid of silicon nitride nanowires and porous ceramic microspheres; The mass ratio of silicon nitride nanowires, porous ceramic microspheres and castor oil is 5:9:3;

[0041] S2. Put the hybrid compound obtained in step S1 and the polyether polyol with a functionality of 4.5 into a high mixer for mixing and stirring, then add foam stabilizer, foaming agent, catalyst and crosslinking agent, stir, and the stirring temperature is 26 ℃, the stirring time is 20min, and the stirring speed is 3300r / min to obtain component A; the foam stabilizer is a mixture of L-6950; the foaming agent is HCFC-141b; the catalyst is the amine catalyst NMM, N,...

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Abstract

The invention belongs to the technical field of wood-imitation furniture material preparation, and specifically relates to a hardened polyurethane wood-imitation furniture material and a preparation method. According to the invention, silicon nitride nanometer wires are hybridized and mixed with porous ceramic microspheres and castor oil and then matched with a component B mutually; due to the fact that the castor oil is rich in hydroxide radicals, the hydroxide radicals are subjected to a cross-linking reaction with isocyanate, and a network structure containing the silicon nitride nanometerwires and the porous ceramic microspheres is formed inside the polyurethane, so that the hardness of polyurethane foam is promoted obviously, and foreign matters are prevented from being impressed toleave traces; the shore hardness of an obtained polyurethane wood-imitation product can reach D40 or more than D40, and the size shrinkage rate is small; and the material is applicable for subsequentprocessing of furniture.

Description

technical field [0001] The invention belongs to the technical field of preparation of imitation wood furniture materials, in particular to a hardened polyurethane imitation wood furniture material and a preparation method. Background technique [0002] In recent years, due to the excessive exploitation and utilization of forest resources, the ecological environment has deteriorated and soil erosion has been serious. However, with the gradual improvement of people's living standards, people's demand for wood has also increased. Therefore, the research and development of wood-like materials has become a A new field of technology. Resins that can be used as imitation wood materials include polyvinyl chloride, polyurethane, polystyrene, etc. Among them, polyurethane imitation wood materials have high rigidity and mechanical strength, and have the characteristics of simple production process and beautiful appearance of the product, which can be used perfectly Instead of wood to ...

Claims

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Application Information

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IPC IPC(8): C08G18/64C08G18/48C08G18/36C08K13/06C08K9/06C08K7/24C08K7/00C08K3/34C08J9/14C08G101/00
CPCC08G18/6484C08G18/36C08G18/48C08G2101/00C08J9/144C08J2203/142C08J2375/14
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD