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Natural plant fiber modifying agent and surface modifying method of natural plant fibers

A natural plant fiber and modifier technology, which is applied in the direction of plant fiber, fiber treatment, dry-cleaning fiber products, etc., can solve the problems of insignificant performance improvement, poor modification effect and high price of composite materials, and achieve the modification effect Good, environmental damage, low cost effect

Inactive Publication Date: 2015-12-02
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, natural plant fiber modifiers on the market are not only expensive and easy to lose, but also directly process natural plant fibers. Since there is a certain amount of silicon on the surface of natural plant fibers, direct treatment of natural plant fibers will improve the performance of composite materials. Not obvious, poor modification effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of natural plant fiber modifying agent of the present invention, by weight, mainly comprises the raw material of following composition: the sodium dodecylbenzenesulfonate of 5g, the anionic polyacrylamide of 10g and the anhydrous polyacrylamide of 789g (1000mL) ethanol.

[0028] The surface modification method of the natural plant fiber (natural wood fiber) of the present embodiment, comprises the following steps:

[0029] 1) Immerse the natural wood fibers into an aqueous solution of sodium hexametaphosphate with a mass fraction of 8% (the mass ratio of natural wood fibers to an aqueous solution of sodium hexametaphosphate is 1:25), stir well for 10 minutes, filter out impurities, and wash with tap water 10min, and then sent to a drying oven at 100°C for 8h.

[0030] 2) Pour the above-mentioned natural plant fiber modifier into a glass container with a cover, and then immerse the dried natural wood fiber in step 1) into the natural plant fiber modifier (natural...

Embodiment 2

[0033] A kind of natural plant fiber modifying agent of the present invention, by weight, mainly comprises the raw material of following composition: the sodium dodecylbenzene sulfonate of 2g, the anionic polyacrylamide of 5g and the anhydrous polyacrylamide of 789g (1000mL) ethanol.

[0034] The surface modification method of the natural plant fiber (natural bamboo fiber) of the present embodiment, comprises the following steps:

[0035] 1) Immerse the natural bamboo fiber into the sodium hexametaphosphate aqueous solution with a mass fraction of 7% (the mass ratio of the natural bamboo fiber to the sodium hexametaphosphate aqueous solution is 1:20), stir thoroughly for 10 minutes, filter out impurities, and wash with tap water 5min, and then dried in a 90°C drying oven for 8h.

[0036] 2) Pour the above-mentioned natural plant fiber modifier into a glass container with a cover, and then immerse the dried natural bamboo fiber in step 1) into the natural plant fiber modifier ...

Embodiment 3

[0039] A kind of natural plant fiber modifying agent of the present invention, by weight, mainly comprises the raw material of following composition: the sodium dodecylbenzene sulfonate of 4g, the anionic polyacrylamide of 7g and the anhydrous polyacrylamide of 789g (1000mL) ethanol.

[0040] The surface modification method of the natural plant fiber (natural bagasse fiber) of the present embodiment comprises the following steps:

[0041]1) Immerse the natural bagasse fiber into the sodium hexametaphosphate aqueous solution with a mass fraction of 6% (the mass ratio of the natural bagasse fiber to the sodium hexametaphosphate aqueous solution is 1:22), stir thoroughly for 10 minutes, filter out impurities, and wash with tap water 5min, and then dried in an oven at 80°C for 8h.

[0042] 2) Pour the above-mentioned natural plant fiber modifier into a glass container with a cover, and then immerse the dried natural bagasse fiber in step 1) into the natural plant fiber modifier (...

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Abstract

The invention discloses a natural plant fiber modifying agent. The natural plant fiber modifying agent comprises, by weight, 2-5 parts of surfactant, 5-10 parts of bridging agent and 780-800 parts of solvent. A surface modifying method of natural plant fibers comprises the following steps that firstly, the natural plant fibers are soaked into a cleaning agent to be cleaned to remove impurities, water is used for cleaning, and drying is conducted; secondly, the natural plant fibers dried in the first step are soaked into the natural plant fiber modifying agent and bathed in water for 10-20 min at the temperature of 70-90 DEG C, the natural plant fibers are taken out, standing and natural drying are conducted, and surface-modified natural plant fibers are obtained. According to natural plant fiber strengthened polymer composite materials processed through the natural plant fiber modifying agent and the modifying method, the tensile strength is increased by more than 20%, and the impact strength is increased by more than 15%.

Description

technical field [0001] The invention relates to a modifier and a method for modifying the interface of a composite material, in particular to a natural plant fiber modifier and a method for modifying the interface of a natural plant fiber reinforced polymer composite material. Background technique [0002] Natural plant fibers such as bamboo fiber and wood fiber have the advantages of abundant resources, high specific strength, low cost, renewability and biodegradability, and are easy to process. They are high-quality raw materials for the preparation of plant fiber-reinforced polymer composites. However, natural plant fibers such as bamboo fiber and wood fiber are composed of cellulose, hemicellulose, lignin and various extracts; the main components of cellulose, hemicellulose and lignin contain a large amount of polar hydroxyl and The phenolic hydroxyl functional group, the surface of natural plant fibers exhibits strong chemical polarity, while the surface energy of most ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/285D06M13/256D06L1/12D06M101/06
Inventor 郑霞李新功唐钱
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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