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Lignin and waste rigid foam powder fluorine-free polyurethane heat insulation material and preparing method

A technology of rigid polyurethane and rigid foam, which is applied in chemical instruments and methods, and other chemical processes, and can solve problems such as high cost, core burning, and the existence of insulation materials

Inactive Publication Date: 2010-10-13
HEILONGJIANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of high cost and complicated process of simply adding lignin or waste foam insulation materials to foam insulation materials in the prior art, and the cost of preparing insulation materials is higher by adding a certain amount. The polyether polyol is used to adjust the molecular weight, change the structure, and improve the strength of the insulation material, but there is a core burning problem of the insulation material in the production process, and a kind of lignin, waste rigid foam powder fluorine-free polyurethane insulation material and its preparation method are provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0007] Specific implementation mode 1: The lignin and waste rigid foam powder fluorine-free polyurethane thermal insulation material in this embodiment consist of 10-16 parts by weight of isocyanate, 6-10 parts of polyether polyol, 0.05-0.25 part of water, physical hair It is prepared from 2-3.5 parts of foaming agent, 0.05-0.2 parts of foam stabilizer, 0.04-0.08 parts of catalyst, 0.1-3 parts of lignin and 0.1-2 parts of waste rigid polyurethane foam powder.

specific Embodiment approach 2

[0008] Specific embodiment two: the lignin of this embodiment, the waste and old rigid foam powder fluorine-free polyurethane insulation material consists of 11 to 15 parts by weight of isocyanate, 6.5 to 9.5 parts of polyether polyol, 0.06 to 0.24 part of water, physical hair It is prepared from 2.1-3.4 parts of foaming agent, 0.06-0.19 parts of foam stabilizer, 0.05-0.07 parts of catalyst, 0.15-2.9 parts of lignin and 0.2-1.8 parts of waste rigid polyurethane foam powder. Other compositions are the same as in Embodiment 1.

specific Embodiment approach 3

[0009] Specific embodiment three: the lignin of the present embodiment, the waste and old rigid foam powder fluorine-free polyurethane thermal insulation material is made up of 13 parts by weight of isocyanate, 8 parts of polyether polyols, 0.1 part of water, 3 parts of physical blowing agents, uniform Made from 0.1 part of foaming agent, 0.06 part of catalyst, 1.5 part of lignin and 1 part of waste rigid polyurethane foam powder. Other compositions are the same as in Embodiment 1.

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Abstract

The invention discloses non-fluorine polyurethane insulating material and making method, which comprises the following steps: allocating raw material with 10-16% isocyanate, 6-10% polyether polyol, 0.05-0.25% water, 2-.35% foamer, 0.05-0.2% foam-even agent, 0.04-0.08% initiator, 0.1-3% lignin and 0.1-2% waste hard foaming powder; blending each component together under normal temperature and normal pressure; stirring evenly; casting into mould or plastic filling space immediately; foaming; obtaining the product.

Description

technical field [0001] The invention relates to a thermal insulation material and a preparation method of the thermal insulation material. Background technique [0002] The amount of natural plant material on the earth - lignin is second only to cellulose. Human beings have used cellulose for thousands of years. Lignin really started to be studied after 1930. It has not been effectively used so far. Lignin has become a relevant Obstacles and environmental pollutants in industrial applications, therefore, the utilization of lignin resources is of great significance to the sustainable development of human society. [0003] Rigid polyurethane foam is one of the main varieties of polyurethane synthetic materials. According to the different raw materials used and the change of formula, it can be made into soft, semi-rigid and rigid polyurethane foam. After 1990, the polyurethane industry faced severe challenges. The first is the pressure of environmental protection. Rigid poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08G101/00C08G18/48C08G18/64C08L75/08C09K3/18
Inventor 李长玉刘丽丽张海艳闫冰朱传勇
Owner HEILONGJIANG INST OF TECH