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Preparation technology for light and high-strength jute fiber composite board and production system

A preparation process and technology of hemp fiber, which is applied in the directions of fiber treatment, plant fiber, heating/cooling fabric, etc., can solve the problems of poor fiber distribution uniformity, poor interface compatibility, and low bonding force between hemp fiber and polypropylene fiber, etc. Good fiber uniformity, increase bonding strength, and improve the effect of overall strength

Active Publication Date: 2018-05-25
JIANGYIN YANLI AUTOMOBILE DECORATIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, because the hemp fiber contains a large amount of hydroxyl groups, it is a hydrophilic polar material, while polypropylene is a hydrophobic non-polar material, and the essentially hydrophilic plant hemp fiber is incompatible with hydrophobic polypropylene. The interfacial compatibility between the untreated hemp fiber and the resin matrix is ​​extremely poor
Therefore, the hemp fiber composite board produced by the prior art has outstanding hemp rigidity, poor cohesion between fibers, longer fabric surface hairiness, and the binding force between hemp fiber and polypropylene fiber (polymer PP fiber) is not high, thereby weakened the mechanical strength of the hemp fiber composite board
[0005] In addition, hemp fiber contains lignin, pectin, waxy substances, and nitrogen-containing substances. After being made into hemp fiber composite board, these substances will chemically react with oxygen, and will emit harmful substances such as aldehydes and benzenes very slowly. , therefore, the environmental protection performance of the hemp fiber composite board produced by the existing technology is not ideal enough
[0006] Furthermore, in the manufacturing process of hemp fiber composite boards of the prior art, a web-laying machine is used to realize the formation of mixed fibers, and the uniformity of the fiber distribution is poor, and the arrangement and distribution of the fibers inside the matting in all directions Uneven, which reduces the overall strength of the hemp fiber composite board

Method used

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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  • Preparation technology for light and high-strength jute fiber composite board and production system
  • Preparation technology for light and high-strength jute fiber composite board and production system
  • Preparation technology for light and high-strength jute fiber composite board and production system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 Shown to be the embodiment of the preparation technology of a kind of lightweight high-strength hemp fiber composite board of the present invention, comprise following procedure:

[0047] Process 1. Raw material preparation and pretreatment process: use polymer PP fiber and plant hemp fiber as raw materials for the preparation of hemp fiber composite board, and modify and strengthen the plant hemp fiber; loosen the polymer PP fiber;

[0048] Process 2, metering and proportioning process: the polymer PP fiber and plant hemp fiber are weighed and proportioned;

[0049] Process 3, impurity removal and mixing process: mixing the polymer PP fiber and plant hemp fiber in process 2 and removing impurities;

[0050] Process 4. Combing process: use a high-speed combing machine to comb the fibers after cleaning and mixing;

[0051] Process 5. Air-laid process: use an air-laid machine to make a fiber web from the combed mixed fibers;

[0052] Process 6. Needling ...

Embodiment 2

[0074] Such as figure 2 Shown is an embodiment of the production system of the preparation process of a light-weight high-strength hemp fiber composite board of the present invention, including the equipment arranged in sequence according to the order of logistics from input to output: bale opener→rough opener→ Dust removal system→high-speed combing machine→air-laid machine→pre-looming machine→main looming machine→vacuum deodorization machine→oven→six continuous heating roll forming machine→automatic sorting and cutting machine.

Embodiment 3

[0076] Take the hemp fiber composite board adopting conventional technology and the hemp fiber composite board adopting the present invention, and carry out density detection and strength test respectively. Among them, the hemp fiber in the preparation process of the hemp fiber composite board using the conventional process does not undergo modification and strengthening treatment, and the web forming process adopts a web laying machine to form a web.

[0077] The density data of the measured hemp fiber composite board is as follows:

[0078]

Hemp fiber composite board using conventional technology

Adopt hemp fiber composite board of the present invention

density

0.54g / cm 3

0.38g / cm 3

[0079] The measured tensile strength and bending strength data are compared as follows:

[0080]

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Abstract

The invention relates to the technical field of composite board manufacturing, and discloses a preparation technology for a light and high-strength jute fiber composite board and a production system.The preparation technology for the light and high-strength jute fiber composite board comprises the following steps of raw material preparing and preprocessing, metering matching, impurity removal mixing, combing, air laying, needling felt forming, vacuum peculiar smell processing and thermoplastic reinforcing; the production system of the preparation technology for the light and high-strength jute fiber composite board comprises a bale opener, a coarse opener, a dust removal system, a high-speed combing machine, an air laying machine, a pre-puncturing machine, a main puncturing machine, a vacuum peculiar smell removal machine, a drying oven, a six-channel continuous heating roller head machine and an automatic sorting sizing cutter which are sequentially arranged from input to output. Thelight, high-strength and high-environment-friendly performance of the jute fiber composite board is achieved.

Description

technical field [0001] The invention relates to the technical field of composite board manufacturing, in particular to a preparation process and a production system of a lightweight high-strength hemp fiber composite board. Background technique [0002] In fiber-reinforced composite materials used in industrial fields such as auto parts, chemical fiber-reinforced thermoplastic matrices are often used to manufacture door inner panels, trunks, roofs, instrument panels, fender liners, spoilers, etc. Among them, glass fiber, aramid fiber, etc. are often used as chemical fibers. Their disadvantages are high brittleness and poor environmental protection, which do not meet the future development direction of automobiles. With the continuous improvement of the social and economic level and the enhancement of consumers' health and safety awareness, people are paying more and more attention to the function, beauty and comfort of the car interior, as well as the quality of the car inte...

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): D04H1/4382D04H1/732D04H1/46D04H1/44D06C7/00D06M10/00D06M15/53D06M101/06
CPCD04H1/4382D04H1/44D04H1/46D04H1/732D06C7/00D06M10/00D06M15/53D06M2101/06
Inventor 徐松庄理少
Owner JIANGYIN YANLI AUTOMOBILE DECORATIVE PARTS
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