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Method and device for modifying high-polymer materials through hot gas and ultrasonic wave

A polymer material, ultrasonic technology, applied in the field of polymer material modification, can solve the problem of active regulation of the components of the substrate without molecular chains, etc.

Inactive Publication Date: 2012-08-15
BEIFANG UNIV OF NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In short, there is currently no method and equipment for actively adjusting the molecular chain, aggregated structure or substrate composition of the substrate after the polymer material is formed into a product.

Method used

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  • Method and device for modifying high-polymer materials through hot gas and ultrasonic wave
  • Method and device for modifying high-polymer materials through hot gas and ultrasonic wave

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Surface hardening of injection molded products. Take the high-density polyethylene injection molding standard sample (no shape and size requirements, just put it down) and place it in the cavity 10 of the ultrasonic processing device, and pass the argon gas into the cavity 10 of the ultrasonic processing device from the gas mixing chamber 4 , under the condition of gas pressure 0.15Mpa, raise the temperature and keep the constant temperature to 55°C for 5 minutes, and start while maintaining (it can also be started after the temperature is maintained, which has little effect on the results, the same as in the following examples 2 and 3) Ultrasonic is used for sample processing, the processing time is 20min, the ultrasonic frequency is 40KHz, and the power is 200w.

[0027] After treatment, the surface hardness of the samples increased by an average of 5%.

Embodiment 2

[0029] The surface group conformation changes. Take the protein film and place it in the cavity 10 of the ultrasonic processing device. The ethanol is vaporized in the gas mixing chamber 4, and then passed into the cavity 10 of the ultrasonic processing device to form a gas with a pressure of 0.15 MPa and a temperature of 80 ° C. The temperature is kept constant for 5 minutes. Simultaneously start the ultrasonic treatment for 15 minutes, the ultrasonic frequency is 20KHz, and the power is 100w.

[0030] After the treatment, ethanol was removed in vacuo, and the surface of the sample changed from hydrophobic to hydrophilic.

Embodiment 3

[0032] The aggregate structure changes. The glass fiber reinforced PP material spline is placed in the processing cavity, and the N 2 The gas is formed in the gas mixing chamber 4, and then passed into the cavity 10 of the ultrasonic processing device. The gas pressure is 0.2Mpa, the temperature is 65°C, and the temperature is kept constant for 10 minutes. At the same time, the ultrasonic processing device is started at the constant temperature, and the ultrasonic treatment is performed for 15 minutes. The ultrasonic frequency is 40KHz, and the power 200w.

[0033] After treatment, the average tensile strength of the sample can be increased by 10%.

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Abstract

The invention relates to a method and a device for modifying high-polymer materials through hot gas and ultrasonic wave, and in particular relates to the method and the device thereof for processing materials through stressing the surfaces of heated polymer materials or partial base material chain segments or macromolecule chains to move by utilizing the heated gas under the high-energy ultrasonic effect. The method is characterized by comprising the following steps: placing high-polymer materials into an enclosed container, then introducing a gas, starting ultrasonic wave to process the materials under certain pressure and temperature conditions, and taking out after processing. The method is used for regulating structure forms or components for the inner part or the surface of the base of the high-polymer material product, and under the combined effects of appropriate temperature, pressure and the hot gas as well as ultrasound and through regulating different parameters to achieve the aims of modifying various performances of the high-polymer materials, such as surface hardness, hydrophobicity, tensile strength and the like, and the method can be realized by adopting the device provided by the invention.

Description

technical field [0001] The invention relates to a method and device for modifying polymer materials through hot gas and ultrasonic waves, especially using heated gas under the action of high-energy ultrasonic to force the surface of the heated polymer material or part of the substrate segment or large Molecular chains move to realize the method and device used for material processing. Background technique [0002] The structure of polymers includes all levels of polymer chains and aggregated structures. The former refers to the geometric arrangement of atoms or groups or segments in a molecular chain when the interaction within the macromolecule reaches equilibrium, while the latter refers to the geometric arrangement between molecular chains when the interaction between macromolecules reaches equilibrium. For polymer materials, the morphology of the above-mentioned different structures will affect the macroscopic properties of polymer materials. Usually, the inhomogeneity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00
Inventor 王美怡王华山
Owner BEIFANG UNIV OF NATITIES
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