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Rigidity-controllable material oriented to material increase manufacturing technology and manufacturing method thereof

A technology of additive manufacturing and rigidity, which is applied in the field of materials with controllable stiffness for additive manufacturing technology and its preparation, can solve the problems of simple molding structure, easy deviation of molding size, and difficult-to-shape parts, etc., to achieve simple manufacturing process , the effect of high forming precision

Inactive Publication Date: 2015-06-10
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Extrusion molding process has high production efficiency and can be used for continuous production, but there are disadvantages such as relatively simple molding structure and easy deviation of molding size; injection molding process has fast production speed and automatic operation, but the cost of injection mold is high and it is difficult to form Parts with complex shapes; while the pouring process is less efficient and requires the manufacture of forming molds

Method used

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  • Rigidity-controllable material oriented to material increase manufacturing technology and manufacturing method thereof
  • Rigidity-controllable material oriented to material increase manufacturing technology and manufacturing method thereof
  • Rigidity-controllable material oriented to material increase manufacturing technology and manufacturing method thereof

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preparation example Construction

[0030] A method for preparing a material with controllable stiffness for additive manufacturing technology provided by the present invention comprises the following steps:

[0031] 1) The types of UV curing forming raw materials include stationary phase materials, reversible phase materials, and UV photoinitiators in materials with controllable stiffness. According to the mass parts of each component in the material formula, acrylate oligomer, alkyl acrylate, and ultraviolet light photoinitiator were mixed in sequence, placed in a water bath at 50-60°C and heated for 2-5 minutes, stirred evenly, and prepared into a light Curing raw materials; and acrylate oligomer is the stationary phase material, and alkyl acrylate is the reversible phase material;

[0032] Among them, the acrylate oligomers are aromatic acid methacrylate half ester, polyethylene glycol dimethacrylate, novolac epoxy acrylate, water-soluble polyester acrylic acid, alkyl epoxy-triacrylate, polybutylene dimethac...

Embodiment 1

[0039] Stiffness controllable material device spiral tube:

[0040] 1) In parts by mass, 10 parts of polyethylene glycol dimethacrylate, 87 parts of tert-butyl acrylate, and 3 parts of 2,2-dimethoxy-phenylacetophenone were mixed successively, Place in a water bath at 50°C and heat for 5 minutes, stir evenly to form a light-curing raw material; since 2,2-dimethoxy-phenylacetophenone has a great influence on the speed of light-curing forming, 2,2-dimethoxy The content of methoxy-phenylacetophenone is based on figure 1 The curing speed of the shown photosensitive material is determined by the change curve of the content of 2,2-dimethoxy-phenylacetophenone;

[0041] 2) Use UG software to create a three-dimensional model of a spiral tubular material device with controllable stiffness, such as image 3As shown, the model size data: the outer diameter of the circular pipe is 12mm, the inner diameter is 10mm, and the pitch is 8mm; the surface of the 3D model is discretized, and the ...

Embodiment 2

[0044] 1) In terms of parts by mass, 37 parts of aromatic acid methacrylate half ester, 60 parts of lauryl acrylate, and 1 part of 2,2-dimethoxy-phenylacetophenone were mixed successively, Put it in a 60°C water bath and heat for 2 minutes, stir evenly to form a light-curing raw material; since 2,2-dimethoxy-phenylacetophenone has a great influence on the speed of light-curing forming, so, 2,2-dimethoxy-phenylacetophenone The content of methoxy-phenylacetophenone is based on figure 1 The curing speed of the shown photosensitive material is determined by the change curve of the content of 2,2-dimethoxy-phenylacetophenone;

[0045] 2) Use UG software to create a three-dimensional model of a spiral tubular material device with controllable stiffness, such as image 3 As shown, the model size data: the outer diameter of the circular pipe is 12mm, the inner diameter is 10mm, and the pitch is 8mm; the surface of the 3D model is discretized, and the triangle tolerance and adjacent t...

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Abstract

The invention relates to a rigidity-controllable material oriented to a material increase manufacturing technology and a manufacturing method thereof. The rigidity-controllable material comprises, by mass, 10-40 parts of acrylic oligomer, 60-90 parts of alkyl acrylate and 0.1-3 parts of ultraviolet light photoinitiator, and the acrylic oligomer, wherein the alkyl acrylate and the ultraviolet light photoinitiator are sequentially mixed and evenly stirred to prepare a photocuring raw material; a three-dimensional model for a rigidity-controllable material device is built, discretization is carried out on the surface of the three-dimensional model to generate a three-dimensional digital model file, and a machining file capable of being identified by a material increase manufacturing device is led out after supporting adding, model layered discretization and machining path generation are carried out on the three-dimensional digital model file; the photocuring raw material is manufactured into the rigidity-controllable material device through the ultraviolet light polymerization material increase manufacturing technology. The obtained device is variable in structure, the rigidity controlling performance is excellent, and the rigidity-controllable material has the advantages of being high in efficiency, low in cost and high in accuracy; the glassy state Yang modulus value is approximately 500 times of the rubbery state Yang modulus value, and the response speed of the Yang modulus along with changes of the temperature is high.

Description

technical field [0001] The invention belongs to the field of materials and molding technology, and in particular relates to a material with controllable stiffness for additive manufacturing technology and a preparation method thereof. Background technique [0002] With the continuous development of material science, structural-functional integrated materials have made great progress, and are gradually replacing the status quo of traditional metals realizing different functions through complex mechanisms, and realizing different functions with simple material shapes and structures, among which materials with controllable stiffness role appears to be particularly prominent. Under the action of external stimuli (such as light, heat, and chemical energy), the Young's modulus of this material changes significantly. By controlling the external stimuli on the material, the stiffness of the material can be controlled. The use of this material can provide driving force for the syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F283/01C08F290/04C08F220/18C08F220/14C08F2/48
Inventor 李涤尘王树新赵东旭罗盟王永泉张国凯
Owner XI AN JIAOTONG UNIV
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