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Method for improving adhesive property of ramie fibre-thermoplastic resin interface

A thermoplastic resin and ramie fiber technology, which is applied in the field of improving the interface bonding performance between ramie fiber and thermoplastic resin, can solve the problems of high cost, long production process, and polluted equipment, and achieve high specific stiffness, low cost, and high specific strength. Effect

Inactive Publication Date: 2011-10-12
DONGHUA UNIV
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  • Claims
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Problems solved by technology

[0006] Among the above-mentioned methods, the processing effect of most methods is not satisfactory, or it is difficult to put into production due to cost problems
Although silane coupling agents are widely used, chlorine must be introduced into the synthesis route, so there are more prominent pollution and equipment corrosion problems, the production process is long, and the cost is relatively high.

Method used

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  • Method for improving adhesive property of ramie fibre-thermoplastic resin interface
  • Method for improving adhesive property of ramie fibre-thermoplastic resin interface
  • Method for improving adhesive property of ramie fibre-thermoplastic resin interface

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Effect test

Embodiment 1

[0021] 1. Sample preparation: Soak all ramie fibers in absolute ethanol for 10 minutes, then place them in a standard state of 20°C and 65% relative humidity to balance, randomly extract fibers with a length of about 10 cm, and use double-sided adhesive tape and epoxy resin Fix it on the mold made of hard cardboard for use;

[0022] 2. Plasma surface treatment: using such as figure 1 The atmospheric pressure plasma jet equipment shown is fed with helium, the helium gas flow rate is 30LPM, the power frequency is 13.65MHZ, the power supply power is 42w, and the processing time of ramie fiber is 24s. The atmospheric pressure plasma jet equipment adopts Circular nozzle, nozzle height is 2mm, and nozzle diameter is 2.5cm, carries out surface treatment to above-mentioned ready-to-use fiber, forms one layer of hydrophobic vinyl film on fiber surface.

[0023] 3. Bonding performance test: The micro-debonding method is used to measure the bonding performance between the fiber and the ...

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Abstract

The invention claims a method for improving the adhesive property of a ramie fibre-thermoplastic resin interface, which comprises the following steps of: soaking ramie fibres into ethanol for pretreatment, then drying the soaked fibres, and performing surface treatment on the ramie fibres by a normal-temperature normal-pressure plasma method. The method is capable of effectively improving the adhesive property of the ramie fibre-thermoplastic resin interface.

Description

technical field [0001] The invention relates to a method for improving the interface bonding performance of ramie fiber and thermoplastic resin, which belongs to the technical field of fiber reinforced composite materials. Background technique [0002] The performance of fiber-reinforced composites depends on the performance of the components and the interfacial compatibility between components. The ramie fiber is hydrophilic because it contains a large number of hydroxyl groups, while most thermoplastic resins are hydrophobic, which is not conducive to the interfacial bonding between the ramie fiber and the resin matrix. Therefore, before the preparation of ramie fiber-reinforced resin-based composites, it is usually necessary to modify the fibers to reduce their hydrophilicity and hygroscopicity, and to improve the interfacial adhesion of the composites. [0003] There are two methods of hemp fiber modification, physical modification and chemical modification. [0004] P...

Claims

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Application Information

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IPC IPC(8): B29B15/08
Inventor 刘星辰胡本婷王霁龙周舟邱夷平
Owner DONGHUA UNIV
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