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Preparation of fibrilia-reinforced cellulose ester-based composite material

A composite material and cellulose ester technology, which is applied in the field of preparation of cellulose ester-based composite materials, can solve the problems of low fiber material density, poor water resistance, and large voids, and achieve good mechanical properties and environmental protection effects

Inactive Publication Date: 2012-11-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prepared cellulose ester-based plastics have unsatisfactory mechanical properties, poor water resistance, low fiber material density, and large voids.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Prepare ingredients in parts by weight for subsequent use:

[0025] 5 parts of ramie fiber;

[0026] 100 parts of cellulose diacetate;

[0027] 10 parts of glycerol;

[0028] 2) Stir cellulose diacetate and glycerol at a weight ratio of 10:1 at normal temperature and pressure until uniform, and seal and balance at room temperature for 16 hours to prepare cellulose diacetate\glycerol;

[0029] 3) directly stir the ramie fiber and cellulose diacetate / glycerol at normal temperature and pressure until uniform;

[0030] 4) Under the conditions of 140°C and 10MPa, hot press with a flat vulcanizer for 10 minutes, and cool at room temperature for 5 minutes.

Embodiment 2

[0032] 1) Prepare ingredients in parts by weight for subsequent use:

[0033] Ramie fiber 20 parts;

[0034] 100 parts of cellulose diacetate;

[0035] 10-30 parts of polyethylene glycol (molecular weight range 200-400);

[0036] 2) Stir cellulose diacetate and polyethylene glycol (molecular weight range 200-400) at a weight ratio of 10:2 at normal temperature and pressure until uniform, and seal and balance at room temperature for 12 hours to prepare cellulose diacetate\polyethylene glycol ethylene glycol;

[0037] 3) directly stir the ramie fiber and cellulose diacetate\polyethylene glycol at normal temperature and pressure until uniform;

[0038] 4) Under the conditions of 145°C and 10MPa, hot press with a flat vulcanizer for 20 minutes, and cool at room temperature for 20 minutes.

Embodiment 3

[0040] 1) Prepare ingredients in parts by weight for subsequent use:

[0041] 20 parts of sisal fiber;

[0042] 100 parts of cellulose acetate propionate;

[0043] 20 parts of glycerol;

[0044] 2) Stir cellulose acetate propionate and glycerol at a weight ratio of 10:2 at normal temperature and pressure until uniform, and seal and balance at room temperature for 20 hours to prepare cellulose acetate propionate\glycerol;

[0045] 3) 20 parts of sisal fibers are first degummed, carded, and hot-pressed into hemp fiber mats, and then the hemp fiber mats are laid in cellulose acetate propionate\glycerol;

[0046] 4) Under the conditions of 150°C and 15MPa, hot press with a flat vulcanizer for 15 minutes, and cool at room temperature for 15 minutes.

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PUM

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Abstract

The invention relates to a method for preparing a fibrilia reinforced cellulose ester base composite material, comprising the following steps that: firstly, the fibrilia is converted into fibrofelt after degumming, carding and hot pressing; secondly, cellulose esters and plasticizer are mechanically mixed according to a certain proportion and sealed and balanced for a period at room temperature; thirdly, the fibrofelt is laid in a cellulose ester plasticizer multi-component substrate according to design specification; fourthly, the cellulose ester base composite material is obtained through molding or hot briquetting method. The raw materials used by the method have wide source, can be degraded and regenerated, is reasonable in price, and is safe and nontoxic; the method for preparing thecomposite material is simple and controllable and has good mechanical property and high water resistance; and the mechanical property is obviously improved compared with cellulose ester materials which only use plasticizer. Therefore, the composite material is a novel material which can be degraded completely and have development potential.

Description

technical field [0001] The invention relates to a preparation method of hemp fiber-reinforced cellulose ester-based composite material. Background technique [0002] As we all know, the world's oil reserves are decreasing day by day, and the world's output of polymer materials that use petroleum products as raw materials continues to grow rapidly, which means that the increasing production of polymer materials and the rising energy consumption together require more Petroleum resources. [0003] In addition, the non-degradability of petroleum-based polymers has caused great pressure on environmental protection. About 30% of global plastic production is used as packaging materials, and most packaging materials or agricultural film materials become waste after one use. Due to the large amount of light weight, difficult to degrade, and incineration at will, it has become a shocking "white pollution" over time. Plastic waste degrades the environment, it causes acid rain, the h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L3/06C08J5/04C08K5/053B29C70/30B29K1/00B29K311/10
Inventor 肖茹孙刚顾莉琴曹振博
Owner DONGHUA UNIV