Method for synthesizing degradable polyurethane by using corncob and industrial capsicum waste residue

A technology of corn cob and polyurethane, which is applied in the field of degradable polyurethane preparation, can solve the problems of large cells, dark color, and high density, and achieve the effect of fine cells, light color, and low density

Inactive Publication Date: 2013-10-02
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The polyurethane foam material synthesized by the liquefied product of corn cob instead of polyol has the advantages of high compressive strength, high hardness, and low density, but has the disadvantages of large cells, dark color, and peculiar smell; the liquefied product of pepper industry waste instead of polyol is synthesized The advanced polyurethane foam material has the advantages of fine cells, light color, no peculiar smell, adjustable compressive strength and hardness in a wide range, but has disadvantages such as high density.

Method used

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  • Method for synthesizing degradable polyurethane by using corncob and industrial capsicum waste residue
  • Method for synthesizing degradable polyurethane by using corncob and industrial capsicum waste residue
  • Method for synthesizing degradable polyurethane by using corncob and industrial capsicum waste residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for synthesizing degradable polyurethane by using corn cobs and industrial pepper waste residues, according to the following steps:

[0037] (1), preparation of corn cob liquefaction product

[0038] Take the corn cob, crush it, sieve it, and take the 20-80 mesh part, dry it at 90-120 degrees Celsius to the balance weight, and make the corn cob powder;

[0039] (2) get the raw material of following parts by weight:

[0040]

[0041] Mix polyethylene glycol-400, glycerin and concentrated sulfuric acid evenly in a three-necked flask, heat to 160 degrees Celsius in an oil bath, stir at 100r / min, then add corncob powder to react for 60min, and quickly cool to room temperature to obtain corncob liquefaction products.

[0042] (2) Preparation of liquefied product of industrial chili waste residue

[0043] Take the industrial chili waste residue, crush and sieve the 20-80 mesh part, dry it at 90-120 degrees Celsius to the balance weight, and make the chili waste...

Embodiment 2

[0053] A method for synthesizing degradable polyurethane by using corn cobs and industrial pepper waste residues, according to the following steps:

[0054] (1), preparation of corn cob liquefaction product

[0055] The corncobs are crushed and sieved to take the 20-80 mesh part, and dried at 90-120 degrees Celsius to a constant weight to obtain the corncob powder.

[0056] Get the raw material of following parts by weight:

[0057]

[0058] Mix polyethylene glycol-400, glycerin and concentrated sulfuric acid evenly in a three-necked flask, heat to 160 degrees Celsius in an oil bath, stir at 100r / min, then add corncob powder to react for 60min, and quickly cool to room temperature to obtain corncob liquefaction products.

[0059] (2) Preparation of liquefied product of industrial chili waste residue

[0060] Take the industrial chili waste residue, crush and sieve the 20-80 mesh part, dry it at 90-120 degrees Celsius to the balance weight, and make the chili waste residu...

Embodiment 3

[0070] A method for synthesizing degradable polyurethane by using corn cobs and industrial pepper waste residues, according to the following steps:

[0071] (1), preparation of corn cob liquefaction product

[0072] Take corn cobs, grind them, sieve them, and take 20-80 mesh parts, dry them at 90-120 degrees Celsius to the constant weight, and make corn cob powder;

[0073] Get the raw material of following parts by weight:

[0074]

[0075] Mix polyethylene glycol-400, glycerin, and concentrated sulfuric acid evenly in a three-necked flask, heat to 145 degrees Celsius in an oil bath, stir at 100r / min, then add corncob powder to react for 60min, and quickly cool to room temperature to obtain corncob liquefaction products.

[0076] (2) Preparation of liquefied product of industrial chili waste residue

[0077] Take the industrial chili waste residue, pulverize and sieve the 20-80 mesh part, dry it at 90-120 degrees Celsius to the balance weight, and obtain the chili waste...

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Abstract

The invention discloses a method for synthesizing degradable polyurethane by using corncob and industrial capsicum waste residue, belonging to the technical field of preparing the degradable polyurethane. According to the method, the corncob and the capsicum waste residue are liquefied by adding liquefier so as to obtain liquefied products of two kinds of biomass; the liquefied products are mixed in proportion and are reacted with PAPI (polymethylene polyphenylisocyanate) to synthesize polyurethane foam; and compared with the polyurethane foam synthesized by single biomass raw material, the comprehensive properties of the polyurethane foam synthesized by two biomass are improved to a large extent. According to the invention, the wasted biomass is taken as the raw material to synthesize the degradable polyurethane material, so that the production cost is saved; the environment pollution and petroleum resources pressure are reduced; and an effective path for using the waste biomass waste residue is provided.

Description

technical field [0001] The invention belongs to the technical field of degradable polyurethane preparation, and in particular relates to a method for synthesizing degradable polyurethane by using corncobs and industrial chili waste residue. Background technique [0002] Corn cob is a powder obtained by crushing corn cobs. Corn cob is rich in cellulose, hemicellulose, and lignin, so it has a wide range of application prospects. China's corn cob production is huge, but its application fields are very limited, and a large amount of it is discarded. my country's chili planting area is second only to cabbage in the vegetable industry. With the rapid development of the chili industry, a large amount of chili industry waste has been discarded, and no effective way has been found so far. [0003] Polyurethane foam materials are widely used in packaging, construction, transportation and other fields because of their porosity, which makes their relative density low and high specific s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/64C08G18/28C08G18/32C08G101/00
Inventor 李栋朱欣頔汪立君周宇光王晓晨
Owner CHINA AGRI UNIV
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