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A kind of photocurable composition and photocurable parts for 3D printing

A 3D printing and composition technology, which is applied in the field of photocurable compositions and photocurable parts for 3D printing, can solve problems such as poor mechanical properties and poor flame retardant effects, and achieve good dimensional stability, good surface effects, and good mechanical properties. performance effect

Active Publication Date: 2021-11-19
诺思贝瑞新材料科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problems of poor flame retardant effect and poor mechanical properties of the existing halogen-free flame-retardant photocurable resin for 3D printing, thereby providing a photocurable composition and photocurable composition for 3D printing. Firmware

Method used

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  • A kind of photocurable composition and photocurable parts for 3D printing

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Experimental program
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Effect test

Embodiment 1

[0020] This embodiment provides a photocurable composition and a photocurable part for 3D printing. The mass ratio of the raw materials of the photocurable composition is as follows: 45g of phosphorus-containing acrylate oligomer, 20g of reactive diluent, 1.8g of acyl oxide Phosphine photoinitiator, 2.5g phosphine oxide derivatives containing reactive hydroxyl end groups, 5g blocked isocyanate, 5g halogen-free intumescent flame retardant, 0.5g polyoxypropylene polyoxyethylene glyceryl ether, 0.3g silicone modified non-toxic polysiloxane; of which:

[0021] 1) The degree of polymerization of the phosphorus-containing acrylate oligomer is 30, and its polymerized monomer is obtained by the following method: 110g of hydroxyethyl acrylate and 100g of phosphoric acid are esterified at 50°C for 24 hours; 2) the The reactive diluent is 2-(1,2-cyclohexane-1,2-dihydroxyimide) ethyl acrylate; 3) the acyl phosphine oxide photoinitiator is a monoacyl phosphine oxide produced by BASF Photo...

Embodiment 2

[0025] This embodiment provides a photocurable composition and a photocurable part for 3D printing. The mass ratio of the raw materials of the photocurable composition is as follows: 100g of phosphorus-containing acrylate oligomer, 30g of reactive diluent, and 4g of acylphosphine oxide Photoinitiator, 2.5g phosphine oxide derivatives containing reactive hydroxyl end groups, 5g blocked isocyanate, 8g halogen-free intumescent flame retardant, 0.3g polyoxyethylene polyoxypropylene pentaerythritol ether, 0.5g silicone modified Polysiloxane, 10g magnesium hydroxide filler treated with silane coupling agent surface, 1g carbon black; wherein:

[0026] 1) The degree of polymerization of the phosphorus-containing acrylate oligomer is 10, and its polymerized monomer is obtained by the following method: 130g of hydroxypropyl acrylate and 100g of phosphoric acid are esterified at 70°C for 16 hours; 2) the The reactive diluent is cyclotrimethylolpropane methylal acrylate; 3) the acylphosph...

Embodiment 3

[0030] This embodiment provides a photocurable composition and a photocurable part for 3D printing. The mass ratio of the raw materials of the photocurable composition is as follows: 100g of phosphorus-containing acrylate oligomer, 200g of reactive diluent, and 100g of acylphosphine oxide Photoinitiator, 15g phosphine oxide derivatives containing reactive hydroxyl end groups, 100g blocked isocyanate, 200g halogen-free intumescent flame retardant, 2g polyoxyethylene polyoxypropanolamine ether, 5g silicone modified polysilicon Oxane, 20g magnesium hydroxide filler treated with titanate coupling agent, 5g red dye; wherein:

[0031] 1) The degree of polymerization of the phosphorus-containing acrylate oligomer is 50, and its polymerized monomer is obtained by the following method: 130 g of hydroxyethyl methacrylate and 100 g of phosphoric acid are esterified at 80 ° C for 12 hours; 2) The reactive diluent is 2-phenoxyethyl acrylate; 3) the acylphosphine oxide photoinitiator is the...

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Abstract

The present application relates to a photocurable composition and a photocurable part for 3D printing. The photocurable composition includes a phosphorous acrylate oligomer or a phosphorous acrylate monomer, a reactive diluent, an acyl phosphine oxide photoinitiator, A thermal crosslinking agent, a phosphine oxide derivative containing a reactive hydroxyl end group, and a halogen-free intumescent flame retardant; wherein, the thermal crosslinking agent is a blocked isocyanate, and the blocked isocyanate can generate a hydroxyl-reactive Reactive isocyanate; the reactive diluent is one or more of monomers with acrylate groups, monomers with vinyl groups, and compounds with maleimide groups; the light The cured part is prepared by the following method: the photocurable composition is subjected to stereolithography to obtain a cured product, and then the cured product is cleaned, UV photocured and thermally cured; the flame retardant effect of the photocured part prepared by the present invention is Good, excellent mechanical properties.

Description

technical field [0001] The present application belongs to the technical field of photocurable resins, and in particular relates to a photocurable composition and a photocurable part for 3D printing. Background technique [0002] Photocuring molding refers to focusing the laser with specific wavelength and intensity on the surface of the photocuring material to solidify it sequentially from point to line and from line to surface to complete a layer of drawing work, and then the lifting platform moves a layer in the vertical direction height, and then solidify another layer, so that the layers are superimposed to form a three-dimensional entity. In recent years, thanks to the extensive application of stereolithography rapid prototyping in the manufacturing industry, the quantity and quality of photocurable resins in the market have also increased. For industries with flame retardant requirements such as electrical appliances, automobiles, and aviation, there are It is require...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/14C08L23/02C08L71/02C08K9/06C08K3/22C08K3/04C08K9/04C08K5/52C08K5/521C08F230/02C08F220/36C08F220/28C08F220/30C08F220/18C08G18/80C08G18/32B33Y70/10
CPCB33Y70/00C08F230/02C08G18/3878C08G18/8074C08K2003/2224C08L33/14C08L2201/02C08L2201/22C08L2205/03C08L2205/035C08L23/02C08F220/36C08L71/02C08K9/06C08K3/22C08K3/04C08K5/52C08K9/04C08K5/521C08L83/04
Inventor 王雁国茅伟华谈忠华曹勇民李振梁雪娇熊文治
Owner 诺思贝瑞新材料科技(苏州)有限公司