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Straw fiber phenolic resin thermal insulation material and preparation technology thereof

A technology of straw fiber and thermal insulation materials, applied in the field of thermal insulation materials, can solve the problems that the hardness, compressive strength and wear resistance of thermal insulation materials need to be improved, and achieve the effects of improving structure and performance, increasing hardness, and efficient utilization

Inactive Publication Date: 2017-08-11
汪家秀
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hu Hongli used lignin to prepare a phenolic thermal insulation material in his doctoral dissertation "Preparation and Performance Research of Lignin Phenolic Foam Thermal Insulation Material", but the hardness, compressive strength and wear resistance of the thermal insulation material need to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] A kind of straw fiber phenolic resin thermal insulation material is characterized in that, the preparation technology of this material comprises the following steps:

[0023] a. Cut the straw into pieces and wash and remove dust, then put the washed pieces into a drying oven at 80°C for drying and drying, then put the dried pieces into a pulverizer and grind them into fibers ;

[0024] b. Mix the product obtained in step a and distilled water evenly, add sodium hydroxide dropwise to adjust the pH to 12, add hydrogen peroxide, and react at 70°C for 4 hours, then use hydrochloric acid to adjust the pH to 2.5, centrifugally settle, separate the filter residue straw fiber and degrade the filtrate The lignin and straw fiber are washed with distilled water to neutrality, and dried;

[0025] c. soak the straw fiber obtained in step b into the gelatin emulsion and take it out after soaking for a period of time, and dry the excess emulsion attached to it, and then place it outd...

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PUM

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Abstract

The invention discloses a straw fiber phenolic resin thermal insulation material and a preparation technology thereof. The straw fiber phenolic resin thermal insulation material and the preparation technology thereof have the advantages that straw is soaked with alkali liquor and treated with hydrogen peroxide, and on one hand, lignin in the straw can be melted away to prepare for a following reaction; on the other hand, the structure and performance of straw fiber can be improved, interface bonding of the straw fiber and the composite material is improved, and then the rigidity and the compressive strength of the composite material are improved.

Description

technical field [0001] The invention relates to a thermal insulation material, in particular to a straw fiber phenolic resin thermal insulation material and a preparation process thereof. Background technique [0002] Plant fibers can be utilized in various ways, such as fibrils, derivatives, or graft copolymers. Product types such as cellulose derivative films, cellulose exchange resins, cellulose derivative liquid crystals, and composite materials of fibers and thermoplastic resins. In recent years, countries around the world have widely developed modified polypropylene to replace engineering plastics. Replacing engineering plastics with composite materials prepared by combining natural plant fibers and polypropylene also expands new fields of plant fiber applications. In the field of cement-based composite materials, since the 1980s, many developing countries have been keen on researching and developing non-wood pulp plant fibers as reinforcing materials for cement mort...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/14C08L97/02C08L89/00C08J9/14C08G8/28
CPCC08L61/14C08G8/28C08J9/141C08J2203/14C08J2361/14C08J2489/00C08J2497/02C08L2203/14C08L2205/035C08L2205/16C08L97/02C08L89/00
Inventor 汪家秀
Owner 汪家秀