Porous material dynamic rotary sintering forming method and forming device

A technology for sintering and forming porous materials, which is applied in the field of dynamic rotary sintering and forming methods for porous materials and its forming devices. Stable size distribution, small size change and high production efficiency

Active Publication Date: 2019-11-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor thermal conductivity of these polymer powder materials and the gaps between the powder materials, it takes a long time for the heat to conduct to the center of the sintered material, the sintering cycle is long and the efficiency is low; at the same time, in the static sintering process, Due to the action of gra

Method used

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  • Porous material dynamic rotary sintering forming method and forming device
  • Porous material dynamic rotary sintering forming method and forming device
  • Porous material dynamic rotary sintering forming method and forming device

Examples

Experimental program
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Example Embodiment

[0043] Example 1 (Examples 1 to 5 are different in the grades of ultra-high molecular weight polyethylene, which are XM220, M1, M2, M3, and GUR4120, respectively. UHMWPEs of different grades have different microscopic morphologies).

[0044] (1) Cleaning the sintering molding device: clean the cavity of the sintering molding device, and spray a layer of release agent on the material sintering chamber 22.

[0045] (2) Feeding: Weigh the set amount of UHMWPE (brand XM220) powder with an electronic scale, and then put the powder into the cavity of the sintering molding device. After the filling is completed, the sintering molding device is shaken to ensure the material as much as possible The filling is even.

[0046] (3) Fix the sintering molding device: close the female mold and the male mold, and connect and fix them with bolts (not shown in the figure).

[0047] (4) Temperature control: adjust the temperature controller (existing technology, not shown in the figure) to set the requir...

Example Embodiment

[0051] Example 2

[0052] (1) Cleaning the sintering molding device: clean the cavity of the sintering molding device, and spray a layer of release agent.

[0053] (2) Feeding: Weigh the set amount of UHMWPE (brand name M1) powder with an electronic scale, and then put the powder into the cavity of the sintering molding device. After the filling is completed, the sintering molding device is shaken to ensure the material as much as possible The filling is even.

[0054] (3) Fixing the sintering molding device: close the female mold and the male mold, and fix them with bolts.

[0055] (4) Temperature control: adjust the temperature controller to set the required sintering temperature in the temperature range of 170~210℃, completely cover the filled sintering molding device with an electric heating mantle, and install a thermocouple , Monitoring temperature changes at any time.

[0056] (5) Sintering: Fix the sintering molding device on the rotating mechanism, start the rotating mechanis...

Example Embodiment

[0059] Example 3

[0060] (1) Cleaning the sintering molding device: clean the cavity of the sintering molding device, and spray a layer of release agent.

[0061] (2) Feeding: Weigh the set amount of UHMWPE (brand M2) powder with an electronic scale, and then put the powder into the cavity of the sintering molding device. After the filling is completed, oscillate the sintering molding device to ensure the material as much as possible The filling is even.

[0062] (3) Fixing the sintering molding device: close the female mold and the male mold, and fix them with bolts.

[0063] (4) Temperature control: adjust the temperature controller to set the required sintering temperature in the temperature range of 170~210℃, completely cover the filled sintering molding device with an electric heating mantle, and install a thermocouple , Monitoring temperature changes at any time.

[0064] (5) Sintering: Fix the sintering molding device on the rotating mechanism, start the rotating mechanism, th...

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Abstract

The invention discloses a porous material dynamic rotary sintering forming method and forming device. The sintering forming device comprises a sintering chamber body, a male die fixed above the sintering chamber body and a female die fixed below the sintering chamber body. A cavity between the male die and the female die forms a material sintering chamber. An electric heating sleeve wraps the sintering forming device. One side of the sintering chamber body is connected with a rotating mechanism through a connecting shaft, and when the rotating mechanism rotates, the sintering forming device synchronously rotates along with the rotating mechanism. According to the forming method, ultra-high molecular weight polyethylene powder is heated and sintered through adopting a dynamic rotary rotating method; in the sintering process, the sintering forming device is always in a rotating state, so that materials are in a motion state, and the problems of non-uniform distribution of pores and uneven upper surface caused by the fact that the materials with large viscosity are in a static state for a long time are avoided; and the materials are evenly heated, so that a product is good in hole forming performance, uniform in porous structure, high in mechanical property and size precision and short in forming period, and operation is simple.

Description

Technical field [0001] The invention relates to the technical field of porous polymer material molding, in particular to a porous material dynamic rotating sintering molding method and a molding device thereof. Background technique [0002] The open-pored porous polymer material has a through three-dimensional network pore structure inside, so the porous material has the advantages of low relative density, high specific strength, light weight, sound insulation, heat insulation, and good permeability. Its application range far exceeds Single-function materials are widely used in biomedicine, filtration separation, permeation and absorption processes in industrial production and life. There are many methods for the preparation of open porous polymer materials, such as melt extrusion stretching method, thermally induced phase separation method, micro foaming method and powder sintering method. For some high molecular polymers with excellent performance, such as ultra-high molecular...

Claims

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Application Information

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IPC IPC(8): B29C67/04B29C67/20
CPCB29C67/04B29C67/205
Inventor 曹贤武李育萍邓雪芹
Owner SOUTH CHINA UNIV OF TECH
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