A kind of high-performance jute fiber reinforced polypropylene composite material and preparation method thereof

A technology of jute fiber and composite materials, which is applied in the field of fiber composite materials, can solve the problems of different fiber content, large proportion of plastic particles, and small proportion of jute fiber, etc., and achieve high specific modulus, enhanced reinforcement and low price.

Active Publication Date: 2020-07-17
CHONGQNG PRET NEW MATERIAL +4
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing twin-screws used to prepare jute reinforced polypropylene composites, it can be found that due to the small proportion of jute fibers, fluffy, and the large proportion of plastic particles, dense, so in general mechanical mixing, it is difficult to mix the two evenly. At the same time, the fiber is easy to bridge during the blanking process, and it is not easy to blank, resulting in a difference in fiber content before and after the high-content fiber granulation process, and prone to broken bars, which is not conducive to continuous production. Under the high shear force and high temperature of compound extrusion, the fiber itself will be damaged and degraded to a certain extent, resulting in a certain decline in the performance of the material

Method used

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  • A kind of high-performance jute fiber reinforced polypropylene composite material and preparation method thereof
  • A kind of high-performance jute fiber reinforced polypropylene composite material and preparation method thereof
  • A kind of high-performance jute fiber reinforced polypropylene composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 75.7 parts of polypropylene, 20 parts of jute fiber, 3 parts of polypropylene grafted maleic anhydride, 0.5 parts of KH5500, 0.3 part of antioxidant DSTP, 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168 by mass percentage , 0.2 part of calcium stearate, mixed in a high-speed mixer for 5 minutes, after the jute fiber was treated with 5% NaOH solution and coupling agent, it was added to the mixer of the internal mixer together with the prepared polypropylene and each component additive mixture. In the mixing room, the mixing and fusion treatment is carried out through the rotation of the rotor of the internal mixer. The rotor speed is 24r / min, the temperature of the mixing room is set at 185°C, and the mixing time is 45min. The material is immediately transferred to the double-arm feeding port, and is extruded, air-cooled, and granulated by the single-screw extruder. The single-screw extruder is divided into three sections to control the temperature, from t...

Embodiment 2

[0033] Weigh 65.7 parts of polypropylene, 30 parts of jute fiber, 3 parts of polypropylene grafted maleic anhydride, 0.5 parts of KH5500, 0.3 part of antioxidant DSTP, 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168 by mass percentage , 0.2 part of calcium stearate, mixed in a high-speed mixer for 5 minutes, after the jute fiber was treated with 5% NaOH solution and coupling agent, it was added to the mixer of the internal mixer together with the prepared polypropylene and each component additive mixture. In the mixing room, the mixing and fusion treatment is carried out through the rotation of the rotor of the internal mixer. The rotor speed is 24r / min, the temperature of the mixing room is set at 185°C, and the mixing time is 45min. The material is immediately transferred to the double-arm feeding port, and is extruded, air-cooled, and granulated by the single-screw extruder. The single-screw extruder is divided into three sections to control the temperature, from t...

Embodiment 3

[0035] Weigh 63.2 parts of polypropylene, 30 parts of jute fiber, 5 parts of polypropylene grafted maleic anhydride, 1 part of KH5501, 0.3 part of antioxidant DSTP, 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168, hard Calcium fatty acid 0.2 parts, mixed in a high-speed mixer for 5 minutes, jute fibers were treated with 5% NaOH solution and coupling agent, and added to the mixing chamber of the internal mixer together with the prepared polypropylene and the mixture of various component additives , through the rotation of the rotor of the internal mixer, it is mixed and fused. The rotor speed is 24r / min, the temperature of the mixing chamber is set at 185°C, and the mixing time is 45min. It is transferred to the double-arm feeding port, extruded, air-cooled, and granulated by the single-screw extruder. The single-screw extruder is divided into three sections to control the temperature, from the feeding port to the head The temperatures are 180°C, 185°C, and 185°C in s...

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Abstract

The invention discloses a high-performance jute fiber reinforced polypropylene composite and a prepration method thereof. The high-performance jute fiber reinforced polypropylene composite comprises the following raw materials of, by weight, 20-60 parts of jute fibers, 30-80 parts of polypropylene, 1-10 parts of a compatilizer, 0.5-2 parts of a coupling agent, 0.1-1 part of antioxidants, and 0.2-1 part of lubricants. The polypropylene composite used for vehicles is prepared by adoption of the jute fibers which are low in price, rich in source, high in specific modulus, low in density and small in effect on the environment, the production cost can be lowered, and the composite accords with the development trend of low-weight, environment-friendly and recyclable automobiles; and meanwhile, the natural fibers are treated by adoption of an alkaline solution, the coupling agent and the compatilizer, the hygroscopicity of the jute fibers is reduced, and the bonding force between the jute fibers and polypropylene particles is increased at the same time.

Description

technical field [0001] The invention belongs to the technical field of fiber composite materials, and relates to a high-performance jute fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry and the increasingly severe environmental and energy issues, greening, recyclability, light weight, and low energy consumption have obviously become the themes of the development of automotive materials. As a renewable ecological and environmental protection material, natural fiber is more environmentally friendly than glass fiber and synthetic fiber due to its abundant sources, easy to degrade, low price, and outstanding specific performance. Natural fiber reinforced resin composites are also used as a Green composite materials are getting more and more attention in automotive materials. For example, natural fiber reinforced polypropylene composite materials can be used to m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L1/02C08L51/06C08L23/06C08L91/06C08K5/544C08K5/5435C08K5/5419C08K5/134C08K5/526C08K5/098C08K5/20C08K5/103
CPCC08L1/02C08L23/12C08L2205/035C08L2205/16C08L51/06C08L23/06C08L91/06C08K5/544C08K5/5435C08K5/5419C08K5/1345C08K5/526C08K5/098C08K5/20C08K5/103
Inventor 巩祥壮周楠婷张祥福周文
Owner CHONGQNG PRET NEW MATERIAL
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