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Preparation method of polyurethane foam materials based on liquefied lignin calcium sulfonate polyalcohol

A technology of calcium lignosulfonate and polyurethane foam is applied in the field of preparation of polyurethane foam materials, which can solve the problems of environment and cost restricting the further application of lignin, and achieve the effects of less environmental pollution and simple preparation process.

Inactive Publication Date: 2012-09-19
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the above-mentioned modification methods sometimes involve the use of organic solvents, which cause environmental and cost problems that greatly limit the further application of lignin on polyurethane foam materials.

Method used

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  • Preparation method of polyurethane foam materials based on liquefied lignin calcium sulfonate polyalcohol
  • Preparation method of polyurethane foam materials based on liquefied lignin calcium sulfonate polyalcohol
  • Preparation method of polyurethane foam materials based on liquefied lignin calcium sulfonate polyalcohol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 100 parts (parts by weight, the same hereinafter) polyether polyol GR-4110G (produced by the third chemical plant of Shanghai Gaoqiao Petrochemical Company, the same hereinafter) into the autoclave, and add 20 parts of calcium lignosulfonate at a temperature of 150 Liquefaction reaction at ℃ for 1 hour to obtain liquefied lignin polyol; its hydroxyl value is 448.1mg(KOH).g -1 , The viscosity is 320.8mPa.s;

[0032] Then 100 parts of liquefied lignin polyol were mixed with 2.5 parts of foaming agent (water), 0.8 parts of foam stabilizer and 0.2 parts of catalyst triethylenediamine in sequence for one minute, then 0.3 parts of catalyst stannous octoate were added and stirred for 30 Second, make it as component A; weigh crude diphenylmethane-4,4'-diisocyanate (MDI) as component B, and adjust the isocyanate index (the speed of the pump for component A and component B) to 0.95 (That is: the weight ratio of component A: component B is 0.95:1), start the machine (high-pressur...

Embodiment 2

[0034] Add 100 parts (parts by weight, the same hereinafter) polyether polyol GR-4110G into the autoclave, add 50 parts of calcium lignosulfonate, and liquefy and react at 170°C for 2 hours to obtain liquefied lignin polyol; Hydroxyl value 470.7mg(KOH).g -1 , The viscosity is 560.5mPa.s;

[0035] Then 100 parts of liquefied lignin polyol were mixed with 3.5 parts of foaming agent (water), 1.0 part of foam stabilizer, 0.4 parts of catalyst triethylenediamine and stirred for one minute, then 0.4 parts of catalyst stannous octoate were added and stirred for 30 Second, make it as component A; weigh the crude diphenylmethane-4,4'-diisocyanate (MDI) as component B, and adjust the isocyanate index (speed of A and B feed pumps) to 1.0 (ie: A Components: The weight ratio of component B is 1.0:1), start the machine (high-pressure foaming machine), foam, and mature (leave for 2-10 days) to obtain polyurethane foam. The apparent density of the polyurethane foam material is 18kg.m 3 , Tensil...

Embodiment 3

[0037] Add 100 parts (parts by weight, the same hereinafter) polyether polyol GR-4110G into the autoclave, add 70 parts of calcium lignosulfonate, and liquefy and react at a temperature of 180°C for 3 hours to obtain liquefied lignin polyol; Hydroxyl value 560.5mg(KOH).g -1 , The viscosity is 752.3mPa.s;

[0038] Then 100 parts of liquefied lignin polyol were mixed with 4.0 parts of foaming agent (water), 1.2 parts of foam stabilizer, and 0.6 parts of catalyst triethylenediamine in sequence and stirred for one minute, then 0.5 parts of catalyst stannous octoate were added and stirred for 30 Second, make it as component A; weigh the crude diphenylmethane-4,4'-diisocyanate (MDI) as component B, and adjust the isocyanate index (speed of A and B feed pumps) to 1.0 (ie: A Components: The weight ratio of component B is 1.0:1), start the machine (high-pressure foaming machine), foam, and mature (place 2-10 days) to obtain polyurethane foam; the appearance of the polyurethane foam The d...

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Abstract

The invention discloses a preparation method of polyurethane foam materials based on liquefied lignin calcium sulfonate polyalcohol. The preparation method is characterized in that through being metered in parts by weight, 100 parts of polyether polyol is added into a reaction kettle, 5 to 100 parts of lignin calcium sulfonate is added, the reaction lasts 1 to 5 hours at the temperature being 150 to 190 DEG C and the pressure being 1 to 3 MPa, and liquefied lignin polyalcohol is obtained; 100 parts of liquefied lignin polyalcohol is respectively mixed and stirred with 2.5 to 5 parts of foaming agent water, 0.8 to 1.2 parts of foam stabilizers, 0.2 to 0.6 part of triethylene diamine, then, 0.3 to 0.5 part of stannous octoate is added, the stirring is carried out, and ingredients A are obtained; and crude diphenylmethane-4,4'-diisocyanate is taken as ingredients B, the ingredients A and the ingredients B are mixed according to a weight ratio being (0.95-1.1):1 and take reaction for foaming and curing by a high-pressure foaming machine, and the polyurethane foam materials are prepared. The preparation method has the advantages that the process is simple, green and clean effects are realized, and good market prospects are realized.

Description

Technical field [0001] The invention belongs to the preparation of foam materials, and relates to a method for preparing polyurethane foam materials based on liquefied calcium lignosulfonate polyol. It is especially suitable for the preparation of polyurethane foam materials for packaging materials for shock absorption and other purposes. Background technique [0002] In recent years, due to the shortage of petroleum resources and the increasing harm to the environment caused by artificial polymer materials, the development and utilization of natural polymer materials has become a hot spot in this field. Since the beginning of the 21st century, reports on the functional applications of cellulose, lignin, chitosan, konjac glucomannan and other biomass materials have emerged one after another. Among many biomass materials, lignin is one of the abundant renewable natural polymers in nature, and its quantity in nature is second only to cellulose, about 6×10 14 t / a. At present, ind...

Claims

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Application Information

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IPC IPC(8): C08G18/64C08H7/00C08J9/08C08G101/00
Inventor 周建竹文坤苏林罗学刚
Owner SOUTHWEAT UNIV OF SCI & TECH
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