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A kind of SLA type phosphorus-containing acrylate prepolymer for 3D printing and preparation method thereof

A technology of acrylate and hydroxyacrylate, which is applied in the field of 3D printing, can solve the problems of environmental pollution, high toxicity of phosphorus oxychloride, hindering the development of the industry, etc., and achieve the effect of good flame retardancy

Active Publication Date: 2018-03-20
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the acrylic oligomers of photosensitive resins in the existing SLA technology are flammable. With the rapid development and large-scale application of SLA technology, this shortcoming will limit its application range and hinder the development of the entire industry.
If flame retardants such as phosphorus oxychloride are added to the SLA photosensitive resin system, although the problem of flame retardancy can be solved, phosphorus oxychloride is highly toxic and will decompose HCl, which will pollute the environment. There are some problems with the compatibility of the resin

Method used

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  • A kind of SLA type phosphorus-containing acrylate prepolymer for 3D printing and preparation method thereof
  • A kind of SLA type phosphorus-containing acrylate prepolymer for 3D printing and preparation method thereof
  • A kind of SLA type phosphorus-containing acrylate prepolymer for 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 13.40g (0.1mol) OP and 11.60g (0.1mol) hydroxyethyl acrylate in a three-necked flask, add 2.00g catalyst strong acidic cation exchange resin PK208LH (catalyst quality is 8% of the mass sum of OP and hydroxyethyl acrylate) And 0.0250g polymerization inhibitor hydroquinone (the quality of polymerization inhibitor is 0.1% of the mass sum of OP and hydroxyethyl acrylate), at 110°C, stop the reaction after reacting for 5h. Separation of the product phosphorus-containing acrylate prepolymer in the system: add 100mL ethyl acetate and continue to stir for 30min. PK208LH resin is soaked in ethanol to wash off the phosphorus-containing acrylate prepolymer for reuse), add the filtrate into a 250mL pear-shaped funnel, add 50ML of saturated saline and mix vigorously to wash off the polymerization inhibitor and unreacted OP. The specific gravity of the saturated saline layer is higher in the lower layer, and the lower layer is released for use, and the saturated saline is washed...

Embodiment 2

[0032] Get 13.40g (0.1mol) OP and 13.00g (0.1mol) acrylate-β-hydroxypropyl ester in a three-necked flask, add 2.00g catalyst strong acidic cation exchange resin PK208LH (catalyst quality is OP and acrylate-β-hydroxypropyl ester 7.58% of the mass sum) and 0.0264g polymerization inhibitor hydroquinone (the quality of the polymerization inhibitor is 0.1% of the mass sum of OP and acrylate-β-hydroxypropyl ester), at 110°C, react for 5h to obtain phosphorus-containing acrylate Prepolymer (separation method is the same as embodiment 1), and the molar yield is 68%.

Embodiment 3

[0034] Get 13.40g (0.1mol) OP and 14.40g (0.1mol) -4-hydroxybutyl acrylate in a three-necked flask, add 2.00g catalyst strong acidic cation exchange resin PK208LH (catalyst quality is OP and -4-hydroxybutyl acrylate 7.18% of the mass sum) and 0.0278g polymerization inhibitor hydroquinone (the quality of the polymerization inhibitor is 0.1% of the mass sum of OP and 4-hydroxybutyl acrylate), at 110°C, react for 5h to obtain phosphorus-containing acrylate Prepolymer (separation method is the same as embodiment 1), and the molar yield is 79%.

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Abstract

The invention discloses a SLA-type phosphorus-containing acrylate prepolymer for 3D printing and a preparation method thereof. Heterocyclopentane OP and hydroxy acrylate compounds are mixed at a molar ratio of 1:1, and a catalyst and a polymerization inhibitor are added to react at 110-130°C for 5-6 hours to obtain a phosphorus-containing acrylate prepolymer, a phosphorus-containing acrylic acid The general structural formula of the ester prepolymer is: wherein, R1=H2C=CH- or R2=-CH2-CH2-, or one of -CH2-CH2-CH2-CH2-.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a SLA type phosphorous-containing acrylate prepolymer for 3D printing and a preparation method thereof. Background technique [0002] Stereolithography is a process based on the principle of stereolithography (Stereo Lithography Apparatus, SLA). It is also the earliest, most mature and widely used rapid prototyping technology, launched by the American 3D Systems company in the late 1980s. . The forming method of SLA is to fill the resin liquid tank with liquid photosensitive resin to make it solidify rapidly under the irradiation of laser beam. Under the control of the computer, the laser beam scans along the liquid surface according to the requirements of the cross-sectional profile to solidify the resin in the scanned area, thereby obtaining a plastic sheet with the cross-sectional profile. Then, the workbench is lowered to the height of a layer of sheet, and the cured pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/30
Inventor 尤庆亮徐亨于洁刘继延何丹
Owner JIANGHAN UNIVERSITY