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Method for improving surface hydrophilicity of waste rubber powder

A waste rubber powder, hydrophilic technology, applied in the field of surface modification of waste rubber powder, to achieve the effect of low energy consumption, excellent comprehensive performance and narrow distribution range

Inactive Publication Date: 2011-01-26
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the modification technology of the surface treatment of waste rubber powder by using room temperature and atmospheric pressure dielectric barrier plasma.

Method used

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  • Method for improving surface hydrophilicity of waste rubber powder
  • Method for improving surface hydrophilicity of waste rubber powder
  • Method for improving surface hydrophilicity of waste rubber powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Put 10 parts of waste tire rubber powder in a plasma treatment device. like figure 1 As shown (or add a plasma transmission device to realize continuous production), the container or carrier is placed under the room temperature and atmospheric pressure plasma spray device, the distance from the upper quartz plate is 2mm, and the waste rubber powder is laid on the bottom with a diameter of 70mm. In a quartz glass vessel, the average thickness of the rubber powder is about 1mm. The plasma equipment was turned on, and the plasma treatment was performed at room temperature and in an air atmosphere. The treatment time was 300s, and the power was 10W.

Embodiment 2

[0041] Place 100 parts of waste fluororubber powder in special equipment for plasma treatment. like figure 1 As shown (or add a plasma transmission device to realize continuous production), the container or carrier is placed under the room temperature and atmospheric pressure plasma spray device, the distance from the upper quartz plate is 2mm, and the waste rubber powder is laid on the bottom with a diameter of 70mm. In a quartz glass vessel, the average thickness of the rubber powder is 1mm. The plasma equipment was turned on, and plasma treatment was performed at room temperature in a nitrogen atmosphere, the treatment time was 2s, and the power was 5000W.

Embodiment 3

[0043] Put 60 parts of the waste moisture-proof pad rubber powder in the special equipment for plasma treatment. like figure 1As shown, the container or carrier is placed under normal pressure and room temperature plasma spraying device, the distance from the upper quartz plate is 2mm, and the waste rubber powder is spread in the quartz glass vessel with a diameter of 70mm below, and the rubber powder is spread evenly. The thickness is 1mm. The plasma equipment was turned on, and plasma treatment was performed in an atmosphere with a molar ratio of air to nitrogen of 1 and a molar ratio of acrylic acid vapor to nitrogen of 0.1, with a treatment time of 120 s and a power of 80 W.

[0044] Table 1 Variation of water contact angle of waste rubber powder with plasma treatment power (waste tire rubber powder, treatment time is 120s)

[0045]

[0046] Table 2 Variation of water contact angle of waste rubber powder with plasma treatment time

[0047]

[0048] Table 3 Surfac...

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Abstract

The invention discloses a method for improving surface hydrophilicity of waste rubber powder, which is characterized by comprising the following steps of: putting 10 to 100 weight parts of the waste rubber powder into a plasma processing device; and jetting plasma to the surface of the waste rubber powder in an open environment with room temperature and atmospheric pressure to ensure that the waste rubber powder moves and is processed in a plasma atmosphere, wherein the power for processing the waste rubber powder is 10 to 5,000 W, and the time is 2.0 to 300 s. After the plasma processing, the surface polarity of the waste rubber powder is increased, the surface oxygen and nitrogen are increased, and the surface hydrophilicity is significantly improved. The method is a one-step method, which improves the surface property, the structure and the shape of the waste rubber powder and improves the added amount in a polymer. The method has the advantages of simple process, strong controllability, simple and convenient operation and high efficiency, needs no organic solvent and is environmentally-friendly.

Description

technical field [0001] The invention relates to a method for improving the surface hydrophilicity of waste rubber powder, belonging to the field of surface modification of waste rubber powder. Background technique [0002] With the rapid development of the automobile industry, the backlog of waste tires in the world has reached 3 billion, and is increasing rapidly by 1 billion per year. Therefore, the problem of waste tire disposal has become increasingly serious. Waste tires are also known as "black pollution". Methods such as landfilling and burning have been gradually eliminated due to resource occupation and secondary pollution. In addition to retreading and original shape utilization, most waste tires are made into rubber powder. Waste tire rubber powder is a rubber particle with a certain particle size obtained by crushing waste rubber tires after removing steel wires and cords. It is a kind of natural rubber, butadiene rubber, reinforcing agent (carbon black), lubric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/28C08L21/00C08L27/12C08L101/00
Inventor 卢灿辉梁梅张新星
Owner SICHUAN UNIV
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