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Photocurable resin material used for casting

A light-curing resin and epoxy resin technology, which is applied in the field of precision casting light-curing resin materials, can solve the problems affecting the size accuracy of the mold shell, the precision of the casting workpiece does not meet the requirements, and the impact on the surface quality of the workpiece, so as to reduce the amount of carbon residue Effect

Active Publication Date: 2017-03-08
HUNAN FARSOON HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are still many problems in replacing the wax-up with the prototype made by light-curing rapid prototyping
What is particularly prominent is that the currently used photocurable resins are basically developed for display models, medical treatment, industrial design, etc., and if they are used to replace wax models in precision casting, it is required that the photocurable resin materials be fired The amount of carbon residue is small, and too much carbon residue will affect the dimensional accuracy of the shell, which will lead to the precision of the cast workpiece not meeting the requirements, and will also affect the surface quality of the workpiece

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The photocurable resin material in embodiment 1 is made of the material of following mass fraction: 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate 20%, 3-hydroxymethyl-1 - Oxetane 15%, Hydrogenated Bisphenol A Type Epoxy Resin 30%, Tripropylene Glycol Diacrylate 18%, Pentaerythritol Triacrylate 7%, Ethylene-Vinyl Acetate Copolymer 1%, Diaryliodonium Hexa Fluorophosphate 7%, Benzophenone 2%.

Embodiment 2

[0024] The photocurable resin material in embodiment 2 is made of the following mass fraction materials: 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate 8%, hexahydrophthalic acid bis Glycidyl Esters 2%, 2-Hydroxymethyloxetane 25%, Hydrogenated Bisphenol A Type Epoxy Resin 35%, 1,6-Hexanediol Diacrylate 10%, Trimethylolpropane Triacrylate Ester 5%, ethylene-vinyl acetate copolymer 3%, diaryliodonium hexafluoroarsenate 8%, benzoin dimethyl ether 4%.

Embodiment 3

[0026] The photocurable resin material in embodiment 3 is made of the material of following mass fraction: 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate 22%, 3,4-epoxycyclohexyl Hexyl methyl methacrylate 15%, 3-methyl-3-hydroxymethyl oxetane 10%, hydrogenated bisphenol A type epoxy resin 28%, tripropylene glycol diacrylate 7%, polyethylene glycol Alcohol diacrylate 2%, pentaerythritol triacrylate 5%, ethylene-vinyl acetate copolymer 1%, triarylsulfonium hexafluorophosphate 5%, benzophenone 5%

[0027] Using the light-curing resin of the above example, under the same conditions, a three-dimensional workpiece was made on a rapid prototyping machine, and then the conditions of firing the prototype in the precision casting process were simulated (1000°C, 2 hours), and the carbon residue after the workpiece was tested was tested. The results are as follows Table 1.

[0028] Table 1 Carbon residue test comparison results

[0029] serial number comparative ex...

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PUM

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Abstract

The invention provides a photocurable resin material used for casting. The photocurable resin material comprises alicyclic epoxy resin, a butoxy ring derivative, hydrogenated bisphenol A epoxy resin, an acrylate monomer without a benzene ring structure, a thermoplastic polymer and an initiator. The photocurable resin material has less carbon residue after calcination, and is applicable to preparing a precise three-dimensional workpiece prototype through a three-dimensional printing manner, thereby being used for replacing a wax mold for precision casting.

Description

technical field [0001] The invention relates to a photocurable resin material, in particular to a photocurable resin material for precision casting. Background technique [0002] At present, the investment casting industry usually firstly uses waxy materials to make prototypes on a wax press machine, then hangs ceramic slurry on the outer surface of the prototype, and then puts the prototype in a high-temperature environment to melt and discharge the prototype. After pouring the metal, a high-precision casting workpiece can be obtained. However, to make prototypes with wax materials, it is necessary to make molds first, and then to inject wax on the wax press machine, and the mold making is extremely time-consuming and costly. Once the prototype parameters need to be modified, the mold must be remade. In addition, for parts with extremely complex shapes, it is impossible to make high-precision prototypes with wax materials. [0003] Rapid prototyping technology is a rapid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F291/10C08F222/20C08F220/32C08F2/48
CPCC08F2/48C08F255/02C08F283/065C08F283/10C08F220/32
Inventor 袁博佟凤宇潘强
Owner HUNAN FARSOON HIGH TECH CO LTD
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