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A kind of photocurable flexible resin for 3D printing and preparation method thereof

A flexible resin and 3D printing technology, applied in the direction of additive processing, can solve problems such as difficult to meet shoe materials, and achieve the best promotion space and market value, large application space, and high molding rate.

Active Publication Date: 2021-12-31
塑成科技(北京)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the elongation at break of the photosensitive resin prepared by the above method is higher than that of most 3D printing materials, it is still difficult to meet the manufacturing needs of shoe materials, stamp models, gaskets and gaskets.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The technical solution adopted in this embodiment is a method for preparing a light-cured flexible resin for 3D printing. The steps of the preparation method are:

[0034] (1) Low-speed stirring: add the pre-weighed monomer raw materials, resin raw materials, initiators, defoamers, leveling agents and pigments into the agitator in sequence, and pre-mix at low speed to obtain a premix; The rotating speed is 300-800r / min;

[0035] The raw material components include the following components in parts by weight: the monomer raw material is 60.5 parts of polyethylene glycol diacrylate, the resin raw material is 34.9 parts of trifunctional aromatic polyether urethane acrylate, and the initiator is phenylphosphine oxide 2.1 parts, defoamer is BYK 067A 0.5 parts, leveling agent (BYK 373) 1 part, pigment (carbon black) 1 part;

[0036] (2) High-speed stirring: Stir the premixed solution in the mixer at high speed for 13 minutes to obtain a uniform mixed solution; the speed of h...

Embodiment 2

[0041] The technical solution adopted in this embodiment is a method for preparing a light-cured flexible resin for 3D printing. The steps of the preparation method are:

[0042] (1) Low-speed stirring: add the pre-weighed monomer raw materials, resin raw materials, initiators, defoamers, leveling agents and pigments into the agitator in sequence, and pre-mix at low speed to obtain a premix; The rotating speed is 380r / min;

[0043] The raw material components include the following components in parts by weight: the monomer raw material is 26.6 parts of trimethylolpropane tetraacrylate, the resin raw material is 67.5 parts of aromatic polyester polyurethane acrylate, and the initiator is 2.9 parts of phenylphosphine oxide , Defoamer BYK067A 0.5 parts, leveling agent (BYK 373) 1 part, pigment (carbon black) 1.5 parts;

[0044] (2) High-speed stirring: Stir the premixed liquid in the mixer at high speed for 11 minutes to obtain a uniform mixed liquid; the speed of high-speed sti...

Embodiment 3

[0049] The technical solution adopted in this embodiment is a method for preparing a light-cured flexible resin for 3D printing. The steps of the preparation method are:

[0050] (1) Low-speed stirring: add the pre-weighed monomer raw materials, resin raw materials, initiators, defoamers, leveling agents and pigments into the agitator in sequence, and pre-mix at low speed to obtain a premix; The rotating speed is 650r / min;

[0051] The raw material components include the following components in parts by weight: monomer raw material polyethylene glycol diacrylate 19.1 parts, trimethylolpropane tetraacrylate 29.2 parts; resin raw material trifunctional aromatic polyether polyurethane acrylic acid 45.2 parts of ester, 0.55 parts of initiator phenylphosphine oxide, 0.55 parts of defoamer BYK 067A, 1 part of leveling agent (BYK 373), 1.2 parts of pigment (carbon black);

[0052] (2) High-speed stirring: Stir the premix in the mixer at high speed for 14 minutes to obtain a uniform mi...

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Abstract

The invention discloses a light-cured flexible resin for 3D printing and a preparation method thereof, and a light-cured flexible resin for 3D printing, characterized in that the raw material components of the light-cured flexible resin include the following components in parts by weight Points: 20-80 parts of monomer raw materials, 30-70 parts of resin raw materials, 0.3-3 parts of initiator, 0.02-0.08 parts of defoamer, 0.03-1 part of leveling agent, 0.05-5 parts of pigment; light-curable flexible resin It is prepared by mixing raw material components through low-speed stirring, high-speed stirring and sieving. The resin product has high elongation at break, moderate strength and hardness, hardness is 45-55A, elongation at break is 100-160%, has the advantages of high deflection resistance, high molding rate and high precision, and can meet the requirements of shoe materials. , seal model, gasket and gasket manufacturing and other product manufacturing requirements; and the preparation method has simple and efficient steps, and has excellent promotion space and market value.

Description

technical field [0001] The invention relates to a resin and a preparation method thereof, in particular to a photocurable flexible resin for 3D printing and a preparation method thereof, and belongs to the field of development of new materials for 3D printing. Background technique [0002] With the continuous development and progress of 3D printing technology, various types of printing equipment are gradually applied to various fields. At the same time, the requirements for the performance of the materials used are getting higher and higher, and it is urgent to develop a variety of new materials with performance standards. Light-curing 3D printing is mainly divided into two types: SLA and DLP. Compared with SLA molding technology, DLP technology has a higher printing time rate and relatively poor controllability of printing accuracy. As an earlier printing technology, light-curing 3D printing has been widely recognized for its advantages of high precision of printed samples,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/00C08F220/18C08F222/14B33Y70/10
CPCC08F283/008B33Y70/00C08F220/1811C08F222/1063C08F220/1812C08F222/1025C08F222/103C08F222/1006
Inventor 赵茜张洪波王雁国王冬冬陈双双博尔金海伦张凌竹
Owner 塑成科技(北京)有限责任公司
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