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Dyeing bastose and modified polypropylene particle prepared from same

A technology of polypropylene particles and hemp fibers, which is used in dyeing, textiles and papermaking, etc., can solve the problem that the surface quality of natural fiber-filled modified plastics is difficult to ensure, the grafting rate is low, the interface adhesion is difficult, and the coupling effect is affected. and other problems, to achieve the effect of bright color, bright surface and good compatibility

Inactive Publication Date: 2013-07-31
BILIC FORTUNE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coupling agents mostly use less liquid and are not easy to disperse evenly into plant fibers, which affects their coupling effect. Industrial applications require special equipment for processing; most grafts or copolymers of maleic anhydride and polyolefin are particles It is easy to disperse into plastics and plant fibers, but its low grafting rate makes it difficult to improve interfacial adhesion
[0005] On the other hand, due to the serious problem of floating fibers, it is difficult to guarantee the surface quality of products filled with natural fiber modified plastics, and it is difficult to apply to products with high surface requirements.

Method used

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  • Dyeing bastose and modified polypropylene particle prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The dyed hemp fibers were prepared using the following steps:

[0032] (1) Cut or grind the sisal fibers to 2mm to obtain 100 parts of chopped hemp fibers; place the chopped hemp fibers in an aqueous solution of sodium hydroxide (10% by mass) and soak them for 1 min, then rinse with clear water Rinse, centrifugally dry the water, and then dry it until the mass moisture content is 8%, so as to obtain alkali-washed chopped hemp fibers;

[0033] (2) Add 0.2 parts of silane coupling agent and 2 parts of oil-soluble black (heat-resistant temperature ≥ 300°C) to alcohol in sequence, and stir evenly to obtain hemp fiber impregnated alcohol solution;

[0034] (3) the chopped hemp fiber of step (1) gained alkali washing is poured in step (2) gained hemp fiber impregnation alcohol solution, the mass ratio of the chopped hemp fiber of alkali washing and hemp fiber impregnation alcohol solution is 1:5 Stirring for 10 minutes, storing for 24 hours, centrifuging to dry the solution,...

Embodiment 2

[0044] The dyed hemp fibers were prepared using the following steps:

[0045] (1) Cutting or grinding the ramie fibers to 1 mm to obtain 100 parts of chopped hemp fibers; soaking the chopped hemp fibers in aqueous sodium hydroxide solution (3% by mass) and stirring for 20 minutes, then rinsed with water , after centrifuging to dry the water, dry to a mass moisture content of 8%, to obtain alkali-washed chopped hemp fibers;

[0046](2) Add 0.1 part of titanate coupling agent and 0.1 part of nigrosin black (heat-resistant temperature ≥ 300°C) to alcohol in sequence, and stir evenly to obtain hemp fiber impregnated alcohol solution;

[0047] (3) the chopped hemp fiber of step (1) gained alkali washing is poured in step (2) gained hemp fiber impregnation alcohol solution, the mass ratio of the chopped hemp fiber of alkali washing and hemp fiber impregnation alcohol solution is 1: 1 Stirring for 5 minutes and storing for 24 hours, centrifuging to dry the solution, and then vacuum ...

Embodiment 3

[0057] The dyed hemp fibers were prepared using the following steps:

[0058] (1) Cut or grind the flax fibers to 3 mm to obtain 100 parts of chopped hemp fibers; soak and stir the chopped hemp fibers in aqueous sodium hydroxide solution (1% by mass) for 10 minutes, then rinse with water , after centrifuging to dry the water, dry to a mass moisture content of 9%, to obtain alkali-washed chopped hemp fibers;

[0059] (2) Add 5 parts of aluminate coupling agent and 5 parts of oil-soluble red (heat-resistant temperature ≥ 300°C) into alcohol in turn, stir evenly to obtain hemp fiber impregnated alcohol solution;

[0060] (3) the chopped hemp fiber of step (1) gained alkali washing is poured in step (2) gained hemp fiber impregnation alcohol solution, the mass ratio of the chopped hemp fiber of alkali washing and hemp fiber impregnation alcohol solution is 1: 3 Stirring for 30 minutes, storing for 2 hours, centrifuging to dry the solution, and then vacuum-drying at 100° C. until ...

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Abstract

The invention discloses a dyeing bastose and a modified polypropylene particle prepared from the same. The bastose comprises the following components in parts by weight: 100 parts of chopped bastose, 0.1-5 parts of dye and 0.1-5 parts of coupling agent. The dyeing bastose prepared by the invention is tarnishproof and fadeless, has good compatibility with plastic and can be used for preparing high-performance short bastose / plastic composite materials. The modified polypropylene particle prepared from the bastose comprises the following components in parts by weight: 30-100 parts of polypropylene resin, 10-50 parts of dyeing bastose, 0.1-10 parts of compatilizer I, 0.1-10 parts of compatilizer II, 0.1-10 parts of masterbatch, 0.5-10 parts of filler, 0.1-10 parts of lubricating agent and 0.1-0.6 part of antioxidant. The bastose modified polypropylene (PP) prepared from the dyeing bastose has the advantages of light surface, vivid color, no obvious floating fiber and good performance.

Description

technical field [0001] The invention belongs to the technical field of natural fiber composite materials and wood-plastic composite materials, and specifically refers to a dyed hemp fiber and modified polypropylene particles prepared therefrom. Background technique [0002] In recent years, research on natural plant fiber composites and wood-plastic composites is in the ascendant. On the one hand, due to the wide range of sources of natural plant fibers, the price is low; on the other hand, in terms of performance, natural plant fiber-reinforced plastics tend to replace mineral fiber-reinforced plastics. [0003] Most natural plant fibers are made of long fibers or woven into fiber mats and then hot-pressed with thermosetting resins. They cannot be directly added to thermoplastics for injection molding like glass fibers; at the same time, natural plant fibers are rich in hydroxyl groups on the surface. Due to strong polarity and hydrophilicity, the compatibility with non-po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/60D06P1/44C08L23/14C08L23/12C08L1/02B29B9/06
Inventor 李及珠廖宇涛董平
Owner BILIC FORTUNE TECH
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