High-aperture-ratio biomass-based rigid polyurethane foam and preparation method thereof

A technology of rigid polyurethane and polyurethane foam, applied in botanical equipment and methods, planting substrates, culture media, etc., can solve the problem of poor fluidity of the all-water foaming system, increased production costs of isocyanates, and reduced foam dimensional stability, etc. problems, to achieve high value-added utilization, high molding efficiency, and simple preparation methods

Active Publication Date: 2017-11-17
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following defects in practical application: CO 2 The thermal conductivity of the gas phase is as high as 16.3mW/m·k, and the thermal insulation performance of the prepared foam is not good; the CO in the foam 2 If the gas diffuses out too

Method used

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  • High-aperture-ratio biomass-based rigid polyurethane foam and preparation method thereof
  • High-aperture-ratio biomass-based rigid polyurethane foam and preparation method thereof
  • High-aperture-ratio biomass-based rigid polyurethane foam and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]Embodiment 1: A kind of high opening rate biomass-based rigid polyurethane foam and preparation method thereof

[0048] The proportion of each component is as follows:

[0049] Component A: bio-based polyol mixture, 100 parts; 1.5 parts of water; 0.5 parts of petroleum ether (petroleum ether with a boiling range of 30-60°C and 60-90°C each accounts for 1 / 2 of the total mass of petroleum ether); polyurethane catalyst 1 part of A-33; 0.4 parts of organotin catalyst T-9; 1.5 parts of silicone oil L-580.

[0050] The preparation method of the bio-based polyol mixture is as follows: in a 500mL four-neck flask equipped with a stirrer, a thermocouple, and a condensing reflux tube, add 30g of peanut shell powder, 240g of polyethylene glycol, and 60g of glycerol, and put Stir evenly in an oil bath that has been preheated to 150°C, slowly add 5.1g of sulfuric acid (mass fraction: 98%) dropwise, after completion, keep the reaction at 150°C for 2 hours, stop stirring and heating, p...

Embodiment 2

[0059] Embodiment 2: A kind of high opening rate biomass-based rigid polyurethane foam and its preparation method

[0060] The proportion of each component is as follows:

[0061] Component A: 100 parts of bio-based polyol mixture; 2.5 parts of water; 3 parts of petroleum ether (petroleum ether with a boiling range of 30-60°C and 60-90°C each accounts for 1 / 2 of the total mass of petroleum ether); polyurethane catalyst A -33 0.75 parts; organotin catalyst T-9 0.3 parts; silicone oil L-580 2.5 parts.

[0062] The preparation method of the bio-based polyol mixture is as follows: in a 500mL four-neck flask equipped with a stirrer, a thermocouple, and a condensing reflux tube, add 30g of peanut shell powder, 240g of polyethylene glycol, and 60g of glycerol, and put Stir evenly in an oil bath that has been preheated to 150°C, slowly add 5.1g of sulfuric acid (mass fraction: 98%) dropwise, after completion, keep the reaction at 150°C for 2 hours, stop stirring and heating, pour int...

Embodiment 3

[0071] Embodiment 3: A kind of bio-based rigid polyurethane foam with high open cell ratio and its preparation method

[0072] The proportion of each component is as follows:

[0073] Component A: 100 parts of biomass-based polyol mixture; 2 parts of water; 1.5 parts of petroleum ether (petroleum ether with a boiling range of 30-60°C and 60-90°C each accounts for 1 / 2 of the total mass of petroleum ether); polyurethane catalyst 1 part of A-33; 0.3 parts of organotin catalyst T-9; 2.5 parts of silicone oil L-580.

[0074] The preparation method of the bio-based polyol mixture is as follows: in a 500mL four-neck flask equipped with a stirrer, a thermocouple, and a condensing reflux tube, add 30g of peanut shell powder, 240g of polyethylene glycol, and 60g of glycerol, and put Stir evenly in an oil bath that has been preheated to 150°C, slowly add 5.1g of sulfuric acid (mass fraction: 98%) dropwise, after completion, keep the reaction at 150°C for 2 hours, stop stirring and heati...

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Abstract

The invention provides high-aperture-ratio biomass-based rigid polyurethane foam and a preparation method thereof. The high-aperture-ratio biomass-based rigid polyurethane foam is prepared from, by mass, 100 parts of bio-based polyol mixture, 105-160 parts of polyisocyanate, 1.05-1.4 parts of composite catalyst, 2-6.5 parts of compound foaming agent and 1.5-3.0 parts of foam stabilizer. The obtained product has high aperture ratio, the used foaming agent does not contain halogen, the polyol is the bio-based polyol and is friendlier to the environment, and an auxiliary foaming agent is a boiling range type substance, so that the foaming process is milder and more stable. The polyurethane foam is suitable for making of flower soil and other materials having the higher requirements for the aperture ratio and water absorbability of foam. Steps are simple, operation is easy, and the practicability is high.

Description

technical field [0001] The invention belongs to the field of open-cell biomass-based rigid polyurethane foam, in particular to a high-open-cell biomass-based rigid polyurethane foam and a preparation method thereof. Background technique [0002] Generally, rigid polyurethane foam is closed-cell, and low-boiling substances such as chlorofluorocarbons (such as trichlorofluoromethane, commonly known as CFC-11), carbon dioxide, etc. are closed in the pores as blowing agents. Due to the good thermal insulation effect, low density and high specific strength of closed-cell rigid polyurethane foam, it is widely used in the insulation layer of refrigerators and freezers, insulation materials for buildings, storage tanks and pipelines, and non-thermal insulation applications such as imitation wood and packaging materials. . [0003] However, some new application fields, such as flower mud, etc., require rigid polyurethane foam to have a higher open cell ratio, so as to have a higher ...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08J9/08C08J9/14A01G31/00C08G101/00
CPCA01G24/00C08G18/4833C08G2101/00C08J9/08C08J9/141C08J2203/10C08J2203/14C08J2203/184C08J2375/08
Inventor 武玉民张广宇刘月涛高传慧张芹芹
Owner QINGDAO UNIV OF SCI & TECH
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