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Preparation method of biomass-base polyurethane foam material

A foam material and polyurethane-based technology, which is applied in the field of preparation of biomass-based polyurethane foam materials, can solve problems such as rarely being effectively utilized, and achieve the effects of large and uneven cells, improved apparent color, and improved thermal properties.

Inactive Publication Date: 2011-10-05
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pulp and paper industry separates about 140 million tons of cellulose from plants every year, and at the same time obtains about 50 million tons of lignin by-products, but so far, more than 95% of lignin is still directly discharged into rivers or rivers as "black liquor". Concentrated and burned, rarely used effectively

Method used

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  • Preparation method of biomass-base polyurethane foam material
  • Preparation method of biomass-base polyurethane foam material
  • Preparation method of biomass-base polyurethane foam material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take crushed corncobs (which have been crushed through a 20-mesh sieve and dried to constant weight at 105°C) and industrial lignin (dried to constant weight at 105°C), according to the following mass ratio:

[0032]

[0033] Put the three-neck flask with the mixed liquefaction agent and catalyst in the oil bath and heat it. When the mixed liquid in the bottle reaches the predetermined temperature, add the mixture of crushed corncobs and industrial lignin, and stir continuously with a stirrer. When the reaction reaches the predetermined time, the three-neck flask is taken out from the oil bath, and rapidly cooled to room temperature to obtain a biomass liquefaction product, wherein the predetermined temperature is 160° C. and the predetermined time is 150 min.

[0034] Take biomass liquefaction products and synthesize polyurethane foam according to the following mass ratio:

[0035] A component:

[0036]

[0037] B component:

[0038] Polymethylene polyphenyl po...

Embodiment 2

[0043] Take crushed corncobs (which have been crushed through a 20-mesh sieve and dried to constant weight at 105°C) and industrial lignin (dried to constant weight at 105°C), according to the following mass ratio:

[0044]

[0045] For the raw materials used and the liquefaction process, refer to Example 1 to obtain a biomass liquefaction product, wherein the predetermined temperature is 150° C., and the predetermined time is 120 minutes.

[0046] Take biomass liquefaction products and synthesize polyurethane foam according to the following mass ratio:

[0047] A component:

[0048]

[0049]

[0050] B component:

[0051] Polymethylene polyphenyl polyisocyanate (PAPI) 96 parts

[0052] Mix components A and B in a stirring container, stir at 14000 rpm at 30°C for 10s, then pour into a mold, foam naturally for 30s, place at 120°C for 12 hours, and store at room temperature for 12 hours. It is fully matured and shaped.

[0053] The appearance color of the obtained p...

Embodiment 3

[0055] Take crushed corncobs (which have been crushed through a 20-mesh sieve and dried to constant weight at 105°C) and industrial lignin (dried to constant weight at 105°C), according to the following mass ratio:

[0056]

[0057] For the raw materials used and the liquefaction process, refer to Example 1 to obtain a biomass liquefaction product, wherein the predetermined temperature is 200° C. and the predetermined time is 180 minutes.

[0058] Take biomass liquefaction products and synthesize polyurethane foam according to the following mass ratio:

[0059] A component:

[0060]

[0061]

[0062] B component:

[0063] Polymethylene polyphenyl polyisocyanate (PAPI) 60 parts

[0064] Mix components A and B in a stirring container, stir at 10,000 rpm at 30°C for 20s, then pour into a mold, let it foam naturally for 40s, place it at 100°C for 12 hours, and store it at room temperature for 24 hours. It is fully matured and shaped.

[0065] The appearance color of t...

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Abstract

The invention discloses a preparation method of a biomass-base polyurethane foam material, belonging to the technical field of chemical industry. The method mainly comprises the following steps: mixing polybasic alcohol liquefier and liquefying catalyst, putting the mixture in a container, heating to 150-200 DEG C, adding biomass waste and industrial lignin, liquefying, and cooling to room temperature to obtain a biomass liquefied product; and mixing the prepared biomass liquefied product, foaming catalyst, foam stabilizer, foaming agent and lignosulphonate into a component A, using isocyanate as a component B, mixing the component A and component B in a mixing vessel, stirring at 20-40 DEG C at 8000-14000 rpm for 5-30 seconds, pouring the mixture into a die, naturally foaming for 5-60 seconds, standing at 80-120 DEG C for 8-24 hours, and storing at room temperature for 8-24 hours until the mixture is sufficiently aged and formed. The invention can obviously improve the properties of the biomass-base polyurethane foam.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for improving biomass-based polyurethane foam materials by using different types of lignin, in particular to a preparation method of biomass-based polyurethane foam materials. Background technique [0002] Due to its good physical and chemical properties, polyurethane materials are widely used in the fields of automobiles, furniture, construction and packaging. Polyurethane has developed very rapidly since its industrialization, and the current annual output has exceeded 10 million tons. However, traditional polyurethane materials are difficult to degrade. A large amount of polyurethane will form "white pollution" after being discarded, which will put a huge pressure on the environment. Moreover, the main raw material for making polyurethane, polyether or polyester polyol, mainly comes from petrochemical raw materials. The shortage of petroleum res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/64C08G18/61C08G18/32C08G101/00
Inventor 李栋相姝楠汪立君杨柳刘嫣红
Owner CHINA AGRI UNIV
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