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Cutting working method of poly lactic acid and its composite material

A technology of cutting and composite materials, applied in the direction of metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve the problems of sticking knife, stickiness, material sticking, etc., to solve sticking and sticking knife problems, avoid sticking and The effect of the sticking knife problem

Inactive Publication Date: 2006-03-15
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat generated during the machining process makes the material soft and sticky, and the material sticks and sticks to the knife.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The cutting processing of embodiment 1. raw material

[0014] Take the rod-shaped PDLLA raw material, fix it on the lathe fixture, cut it into thin slices, and control the cutting thickness to 0.2-0.5mm. During processing, hexane is dripped continuously on the processing surface at a rate of 100 drops per minute, which can maintain the normal processing temperature of the processing surface, and no sticking and sticking of knives will occur.

Embodiment 2

[0015] Embodiment 2. product cutting process

[0016] Take a rod-shaped PDLLA / HA composite material with a diameter of about 1 cm, fix it on the lathe fixture, and carry out cutting processing according to the product size. During processing, add absolute ethanol continuously at a rate of 150 drops per minute on the processing surface , can maintain the normal processing temperature of the processing surface, no adhesion and sticking knife phenomenon.

Embodiment 3

[0018] Take a rod-shaped PDLLA / HA with a diameter of about 0.8 cm, fix it on the lathe fixture for cutting processing, and continuously drop ethyl acetate on the processing surface at a rate of 110 drops per minute, which can maintain the normal processing temperature of the processing surface. No adhesion and knife sticking phenomenon occurred, and the ideal processing effect was obtained.

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PUM

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Abstract

The present invention provides one kind of cutting method of biodegradable polymer material and its composite material. The cutting is completed under the temperature of 15-50 deg.c while dropping volatile organic solvent for cooling. The organic solvent may be any of anhydrous alcohol, ethyl acetate, acetic acid and hexane, and the dropping speed is 100-150 drop / min. The said method can avoid the adhesion and sticking to cutter of the biodegradable polymer material and its composite material during cutting.

Description

technical field [0001] The invention relates to a mechanical processing method of a biodegradable polymer material and a composite material thereof. Background technique [0002] Biodegradable polymer materials and their composite materials have good biocompatibility, can be degraded and absorbed in the biological body, and have been widely used in the repair, replacement and treatment of various human tissues in the medical field. Such as ligaments, tendons, skin, blood vessels, artificial organs, bones, teeth and other human soft and hard tissues, as well as bone internal fixation devices. [0003] Biodegradable polymer materials and their composite materials generally have low softening points and good degradation properties, but they are difficult to process mechanically, and are usually formed by injection molding or extrusion molding. This material generally has a large molecular weight and a high mechanical strength. Injection molding or extrusion molding has a larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q11/10C08J5/00
Inventor 李世普阎玉华万涛陈晓明李建华贺建华
Owner WUHAN UNIV OF TECH
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