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Preparation method of butyl acrylate grafted modified hemp stalk core

A technology of butyl acrylate and hemp stalk core, which is applied in the field of materials, can solve problems such as variability, and achieve the effects of improved compatibility, simple preparation method, and low cost

Pending Publication Date: 2020-10-09
HEILONGJIANG HEIKE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fibers contained in hemp stalk cores suffer from variability and require surface treatments to improve the mechanical properties of their composites with thermoplastic, thermoset and biodegradable matrices

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] A certain amount of hemp stalk cores were placed in a 10% sodium hydroxide solution and soaked for 30 minutes, and then the treated hemp stalk cores were vacuum filtered and washed with distilled water for several times until neutral; The treated hemp stalk core was transferred to 20% dilute hydrochloric acid solution and soaked for 30 minutes, and the solution was added with 8% cerium ammonium nitrate solution to soak for 30 minutes, and finally injected with 5% butyl acrylate solution, which was put into the solution for 40 minutes. React in a constant temperature water bath at ℃ for 4 hours, wash the resulting product with distilled water until neutral, dry, wash the precipitate with absolute ethanol as a solvent to remove unreacted substances, put it in a drying oven at 60℃ and dry to obtain modified hemp stalks core.

example 2

[0014] A certain amount of hemp stalk cores were placed in a 20% sodium hydroxide solution and soaked for 40 minutes, and then the treated hemp stalk cores were vacuum filtered and washed with distilled water for several times until neutral; The processed hemp stalk core was transferred to 30% dilute hydrochloric acid solution and soaked for 30 minutes, and the solution was added with a concentration of 10% cerium ammonium nitrate solution for 30 minutes, and finally injected with a concentration of 10% butyl acrylate solution, which was placed in 50 React in a constant temperature water bath at ℃ for 6 hours, wash the resulting product with distilled water until neutral, dry, wash the precipitate with absolute ethanol as a solvent to remove unreacted substances, put it in a drying oven at 60 ℃ and dry to obtain modified hemp stalks core.

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PUM

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Abstract

The invention relates to a preparation method of a butyl acrylate grafted modified hemp stalk core. The method firstly pre-treats the hemp stalk core by an alkali treatment method, and then modifies the same with butyl acrylate. The butyl acrylate grafted modified hemp stalk core prepared by the invention has weakened hydrophilic properties, increased crystallinity and order degree, and improved compatibility with the plastic matrix. The preparation method is simple, requires no high-end professional equipment as well as low requirements for temperature and pressure, is fast and energy-saving,and has relatively low cost.

Description

technical field [0001] The present invention belongs to the field of materials. Specifically relates to a preparation method of butyl acrylate graft modified hemp stalk core. Background technique [0002] As a natural biomass material, compared with carbon fiber and glass fiber, plant fiber has many advantages such as convenient material acquisition, low price, renewable and degradable, so it is widely used in reinforced composite materials. Due to the high content of cellulose and high strength, hemp fiber can also be used as a good reinforcing component to prepare composite materials. Hemp fiber has high mechanical properties such as specific strength and specific modulus. At the same time, Chinese hemp fiber Hemp production ranks first in the world and has potential industrial application value. [0003] As a natural resource that can be obtained in nature, hemp stalk core has a wide range of sources and is cost-effective, low in price, and meets people's needs for mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/04D06M11/13D06M101/06C08L1/02
CPCC08L1/02D06M11/13D06M14/04D06M2101/06Y02P20/10
Inventor 姜振生
Owner HEILONGJIANG HEIKE TECH CO LTD