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A raw material for rapid prototyping and corresponding three-dimensional rapid prototyping method

A molding method and rapid technology, applied in the field of materials, can solve the problems of difficult molecular structure change, poor structural stability, toxic molding materials, etc.

Active Publication Date: 2016-06-08
谢宝军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, all current rapid prototyping techniques have inherent difficulties and limitations in generating bioactive objects: (1) materials are limited to photocurable resins, (2) toxic molding materials, (3) Exposure to toxic organic solvents, (4) very high processing temperature (5) requires molding materials to have chemical cross-linking ability, (6) weak mechanical strength and poor structural stability
There are also rapid prototyping technologies that can be processed in water and at room temperature, but the materials are limited to only water-soluble polymers and hydrogels or polymers with very low melting points. These materials usually have poor strength and molecular structure not easy to change

Method used

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  • A raw material for rapid prototyping and corresponding three-dimensional rapid prototyping method
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  • A raw material for rapid prototyping and corresponding three-dimensional rapid prototyping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Take 50g of polylactic acid superfine powder (average particle size 1 micron), add it to 50g of sodium alginate (anionic water-soluble polymer) solution containing 1% by weight, disperse vigorously with an ultrasonic pulverizer for 10 minutes to obtain a colloid, and form a 50 % solid content of rapid prototyping raw materials. After the raw material is used for rapid molding into an embryo body, it is put into an oven for drying and sintering at a temperature of 60 degrees Celsius for 10 minutes to obtain a finished product.

Embodiment 2

[0043] Take 50g of polyethylene-acrylic acid superfine powder (average particle size 1 micron), add it to 50g of sodium alginate (anionic water-soluble polymer) solution containing 2% by weight, and disperse vigorously with an ultrasonic pulverizer for 10 minutes to form a colloid. Then add a small amount of 10% hydrochloric acid to adjust the pH to 5 to make the colloid gel, homogenize it with a three-roll mill for 3 times, and finally obtain a rapid prototyping raw material with a solid content of 50%. After the raw material is rapidly formed into an embryo body, it is put into an oven for drying and sintering at a temperature of 30 degrees Celsius for 10 minutes to obtain a finished product.

Embodiment 3

[0045] 0.1g of bovine serum albumin (BSA) was added after the colloid was formed from the rapid prototyping raw materials in Example 2, and then molded according to the method of Example 2 to make a finished product, which has the ability of controlled release of bovine serum albumin.

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Abstract

The invention provides a preparation method of a raw material for rapid molding based on a colloid and a rapid molding method developed by use of the raw material. The raw material for rapid molding is characterized by mainly comprising 20%-75% of superfine powder material, 0.05-20% of dispersant, 0.05%-10% of flocculant, 0.05%-5% of thickener, 0.01%-5% of flow promoting agent and 0%-10% of molding promoter, wherein the superfine powder can be prepared from a plurality of materials such as a polymer, ceramics and a metal. As the raw material for rapid molding has the characteristics of aquosity, room-temperature processibility and the like, the corresponding rapid molding method has the advantages of environmental friendliness, biocompatibility, flexibility and variability, and the like. The rapid molding method is suitable for ordinary families or occasions requiring environmental friendliness, suitable for manufacturing products with biological activity and also especially suitable for rapid molding three-dimensional objects needing to be controlled in internal and external structures.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a raw material for rapid prototyping and a corresponding three-dimensional rapid prototyping method. Background technique [0002] The development of rapid prototyping or 3D printing technology marks the beginning of a new era of product design and manufacturing revolution. Different from traditional product making methods, rapid prototyping can directly make a design structure from a 3D computer-aided design (CAD) model without any molds. The additive processing characteristics of rapid prototyping technology provide the possibility to manufacture complex three-dimensional internal space structures, functionally graded materials, and other special products that cannot be produced using traditional mass processing production methods. [0003] Current rapid prototyping systems can be divided into three categories, photolithography, lamination, and extrusion technologies, mainly the proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L23/08C08L89/00C08L5/02C08J3/03B29C67/00C04B35/46C04B35/634
Inventor 谢宝军
Owner 谢宝军