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Flexible chain hyper-dispersant used by waste sisal fiber and preparation method thereof

A technology of hyperdispersant and sisal fiber, which is applied in fiber treatment, plant fiber, textiles and paper making, etc., can solve the problems of single source of raw materials and high price, and achieve multiple options, low price, and test equipment simple effect

Inactive Publication Date: 2009-12-30
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing coupling agents for sisal fibers are usually maleic anhydride, elastomers, silane coupling agents, etc. The source of raw materials is relatively single and expensive

Method used

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  • Flexible chain hyper-dispersant used by waste sisal fiber and preparation method thereof
  • Flexible chain hyper-dispersant used by waste sisal fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Add 500ml of polyethylene glycol 200 with a molar concentration of 2mol / L into a 2000ml three-necked flask, control the temperature at 120°C, stir magnetically for 1 hour, remove water, then cool down to 110°C, and add 98.06g of maleic anhydride And 2.98g p-toluenesulfonic acid, stirring reaction 2h.

[0017] (2) Slowly add 250ml of acrylic acid with a molar concentration of 1mol / L, 39.54g of sodium methacrylate, 3.56g of potassium persulfate and 50ml of distilled water to the product obtained in step (1), react at 75°C for 4h, and the reaction ends Then titrate with 4mol / L sodium hydroxide solution to adjust the pH value to 7 to obtain the flexible chain hyperdispersant product. After treating the waste sisal with the prepared flexible chain hyperdispersant, the wood-plastic decorative board prepared by blending with polypropylene is measured: when the dosage is 1-5% of the amount of sisal, the impact strength is 13.78kJ / m 2 Increased to 19.44kJ / m 2 .

Embodiment 2

[0019] (1) Add 500ml of molar polyethylene glycol 400 with a molar concentration of 2mol / L into a 2000ml three-neck flask, control the temperature at 120°C, stir magnetically for 1.5h, remove water, then cool down to 110°C, and add 98.06g of horseradish To acid anhydride and 4.98g p-toluenesulfonic acid, stirred for 2.5h.

[0020] (2) Slowly add 250ml of acrylic acid with a molar concentration of 1mol / L, 39.54g of sodium methacrylate, 5.56g of potassium persulfate, and 100ml of distilled water to the product obtained in step (1), react at 85°C for 5h, and react After the end, titrate with 4mol / L sodium hydroxide solution, adjust the pH value to 7, and obtain the flexible chain hyperdispersant product. After treating the waste sisal with the prepared flexible chain hyperdispersant, the wood-plastic decorative board prepared by blending with polypropylene is measured: when the dosage is 1-5% of the amount of sisal, the impact strength is 13.78kJ / m 2 Increased to 22.09kJ / m 2 . ...

Embodiment 3

[0022] (1) Add 500ml of polyethylene glycol 600 with a molar concentration of 2mol / L into a 2000ml three-necked flask, control the temperature at 120°C, stir magnetically for 2 hours, remove water, then cool down to 110°C, and add 98.06g of maleic anhydride And 6.98g p-toluenesulfonic acid, stirring reaction for 3h.

[0023] (2) Slowly add 250ml of acrylic acid with a molar concentration of 1mol / L, 39.54g of sodium methacrylate, 7.56g of potassium persulfate, and 150ml of distilled water to the product obtained in step (1), react at 85°C for 6h, and react After the end, titrate with 4mol / L sodium hydroxide solution, adjust the pH value to 7, and obtain the flexible chain hyperdispersant product. After treating the waste sisal with the prepared flexible chain hyperdispersant, the wood-plastic decorative board prepared by blending with polypropylene is measured: when the dosage is 1-5% of the sisal amount, the impact strength is 13.78kJ / m 2 Increased to 19.09kJ / m 2 .

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Abstract

The invention discloses a flexible chain hyper-dispersant used by waste sisal fiber and a preparation method thereof. The method comprises: 250-1000ml of polyethylene glycol with the molar concentration of 2mol / L is put into a three-neck flask having the volume of 2000ml, and the temperature is controlled to be 100-150 DEG C; magnetic stirring is carried out for 0.5-5h, the water content is removed, and then the temperature is reduced to be 90-120 DEG C; 49-200g of maleic anhydride and 1-25g of p-toluenesulfonic acid are added and then stirred for reaction for 2-4h; 100-500ml of crylic acid with the molar concentration of 1mol / L, 15-160g of sodium methyl acrylsulfonate, 1-25g of potassium persulfate and 50-500ml of distilled water are slowly added and react for 4-8h at 70-100 DEG C; after the reaction, the product is processed by titration through 4mol / L of sodium hydroxide solution, and the pH value is adjusted to be 6-8. The invention has lower cost, no pollution and good modifying effect for the waste sisal fiber; furthermore, the waste sisal fiber processed by the flexible chain hyper-dispersant can be used for a wood plastics decorating plate prepared by polypropylene, and the wood plastics decorating plate has high impact resisting strength and is easy to process.

Description

technical field [0001] The invention relates to a flexible chain hyperdispersant for waste sisal fibers and a preparation method thereof. Background technique [0002] Since entering the 21st century, human beings are facing severe challenges of resource, energy and environmental crises. In order to ensure the sustainable development of human society and economy, people have paid more and more attention to the use of inexhaustible renewable biological resources (Biomass renewable re-source) to manufacture new materials, especially those that can be easily regenerated in nature. The preparation of various types of composite materials with excellent performance / price ratio has attracted people's great attention. People pay more and more attention to the impact of research and development of new materials on resources and environment and pay attention to the coordination with resources and environment. Composite materials prepared by mixing natural plant fibers and thermoplas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/263D06M101/06
Inventor 陆绍荣刘婷王一靓张晨曦班建峰于春贺
Owner GUILIN UNIVERSITY OF TECHNOLOGY