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Compound modified biomass fibrilia and preparation method thereof

A composite modification and biomass technology, applied in the fields of plant fiber, fiber treatment, textile and paper making, etc., can solve the problem of poor performance of natural biological hemp fiber/polymer composite material, and the inconsistency of the interface between the polarity of hemp fiber and polymer polarity. Compatibility, low interface bonding force and other problems, to achieve the effects of excellent efficacy, easy control of process parameters, and stable performance

Inactive Publication Date: 2010-06-30
HUNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at existing natural biological hemp fiber / polymer composite material existing hemp fiber structure defect and impurity, hemp fiber polarity and polymer polarity interface incompatibility, interfacial binding force is low, finally lead to natural biological hemp fiber For the problems of poor performance and unstable performance of fiber / polymer composite materials, the composite modified hemp fiber and the simple and operable preparation method of the modified hemp fiber were scientifically designed and developed for the first time

Method used

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  • Compound modified biomass fibrilia and preparation method thereof
  • Compound modified biomass fibrilia and preparation method thereof
  • Compound modified biomass fibrilia and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Take by weighing 2.667g lanthanum nitrate hexahydrate (La(NO 3 ) 3 ·6H 2 (0), dissolve the weighed lanthanum nitrate hexahydrate in 2Kg hot water (50-60°C) under medium-speed magnetic stirring, and keep stirring until the lanthanum nitrate hexahydrate dissolves completely;

[0037] 2. Weigh 0.5Kg of ramie fibers rinsed with clear water and dried, put them into the prepared rare earth solution and soak for 1-2 hours, then remove and dry;

[0038] 3. take by weighing 1Kg maleic anhydride grafted polypropylene (KRD series maleic anhydride grafted polypropylene, Qinhuangdao Keruida Macromolecular Material Co., Ltd., the same as the following examples), melt and mix with The ramie after rare earth treatment is bonded. Under the conditions of extrusion temperature 175-185 ° C and extrusion pressure 38-45 bar, the rare earth modified ramie fiber is drawn into the extruder at a screw speed of 80 rpm and is extruded by maleic anhydride. Grafted polypropylene sheath.

[00...

Embodiment 2

[0041] 1. Weigh 6g lanthanum nitrate hexahydrate (La(NO 3 ) 3 ·6H 2 (0), the weighed lanthanum nitrate hexahydrate is dissolved in 1.5Kg hot water (50-60° C.) under medium-speed magnetic stirring, and the stirring is continued until the lanthanum nitrate hexahydrate is completely dissolved;

[0042] 2. Weigh 500g of ramie fibers rinsed with clear water and dried, put them into the prepared rare earth solution and soak for 1-2 hours, then remove and dry;

[0043] 3. Weigh 1Kg of maleic anhydride grafted polypropylene, melt it in a single-screw extruder and bond it with the ramie after rare earth treatment, at an extrusion temperature of 175-185°C and an extrusion pressure of 38-45bar, Rare-earth modified ramie fibers are drawn into the extruder at a screw speed of 75 rpm and coated with maleic anhydride-grafted polypropylene.

[0044] 4. The hemp fiber coated with rare earth grafted and compounded is rolled to a uniform surface, cooled, solidified at room temperature, and dr...

Embodiment 3

[0046] 1. Take by weighing 13.33g lanthanum nitrate hexahydrate (La(NO 3 ) 3 ·6H 2 (0), dissolve the weighed lanthanum nitrate hexahydrate in 2Kg hot water (50-60°C) under medium-speed magnetic stirring, and keep stirring until the lanthanum nitrate hexahydrate dissolves completely;

[0047] 2. Weigh 1Kg of ramie fibers rinsed with clear water and dried, put them into the prepared rare earth solution and soak for 1-2 hours, then remove and dry;

[0048] 3. Weigh 2Kg of maleic anhydride grafted polypropylene, melt it in a single-screw extruder and bond it with rare earth-treated ramie, at an extrusion temperature of 175-185°C and an extrusion pressure of 38-45bar, Rare-earth modified ramie fibers are drawn into the extruder at a screw speed of 70 rpm and coated with maleic anhydride-grafted polypropylene.

[0049] 4. The hemp fiber coated with rare earth grafted and compounded is rolled to a uniform surface, cooled, solidified at room temperature, and dried to obtain the nat...

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Abstract

The invention relates to a compound modified biomass fibrilia and a preparation method thereof and develops a rare earth compound modified fibrilia, which is characterized in that maleic anhydride grafted polypropylene is grafted and coated on the outer surface of natural fibrilia modified by rare earth. The preparation method comprises the following steps of: impregnating the natural fibrilia in a certain rare earth solution at normal temperature or low temperature for 1-2 hours, filtering and drying; and then coating the maleic anhydride grafted polypropylene on the fibrilia treated by the rare earth by adopting an extruding method to obtain the compound modified biomass fibrilia. The compound modified method can effectively eliminate the problems of surface structural defects and impurities, change the surface polarity and the hydrophily, greatly improve the interface bonding force of the fibrilia and a polymer matrix material, can be expected to be made into a fibrilia / polymer composite material with strong interface bonding capability and excellent mechanical property and ensures that the modified natural fibrilia and a composite material thereof can be more widely applied to the field of buildings, vehicle trimmers, office furniture and the like. The modified method has the advantages of simple operation, scale, no pollution and environment friendlessness.

Description

technical field [0001] The invention belongs to the technical field of materials and surface treatment thereof, in particular to a biomass natural hemp fiber with surface composite modification treatment and its preparation. The composite modified hemp fiber material invented can effectively solve the problems of hemp fiber surface structure defects, impurities, structural consistency and stability, and make the hemp fiber can further form an excellent interface with the polymer matrix, thereby obtaining a wide range of mechanical properties. The hemp fiber / polymer composite material with excellent performance expands the application field of natural hemp fiber. Background technique [0002] With the increasing shortage of international energy, rising energy prices and increasing pressure on environmental protection, governments of various countries are paying more and more attention to research on energy-saving and environmental protection technologies. One of the most imp...

Claims

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Application Information

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IPC IPC(8): D06M11/45D06M11/00D06M15/227D06M101/06
Inventor 何莉萍陈大川王璐琳
Owner HUNAN UNIV
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