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SLA elastic photosensitive resin for 3D printing and preparation method thereof

A photosensitive resin and 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of difficult to meet the actual needs of customers, low elongation at break of photosensitive resin, etc., achieve the best promotion space and market value, and improve research and development Efficiency, steps are simple and efficient

Active Publication Date: 2019-05-21
浙江浙创三维科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The elongation at break of the photosensitive resin prepared by the above method is low, and it is difficult to meet the actual needs of mold manufacturing and customers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The technical solution adopted in this embodiment is a preparation method of SLA elastic photosensitive resin for 3D printing, and the steps of the preparation method are:

[0028] (1) Add the monomer raw materials, initiators, defoamers, leveling agents, toughened microspheres and pigments weighed in advance to the mixer in turn, and stir fully to obtain a mixed liquid; the stirring speed is 350r / min;

[0029] In parts by weight, the monomer raw material is 40 parts of 2-acrylic acid (tetrahydro-2-furyl) methyl ester, the initiator is 2 parts of 2-hydroxyl-2-methyl-phenylacetone-1, The foaming agent is 0.05 parts of Foamex N, the leveling agent is 0.05 parts of Flow 425, the toughening microsphere is 5 parts of Expancel 930DU120, and the pigment is 2 parts of titanium dioxide;

[0030] (2) Add resin raw materials and toughened rubber to the mixed liquid obtained in the step (1) at 60° C. and stirring conditions, stir evenly and sieve to obtain SLA elastic photosensit...

Embodiment 2

[0035] The technical solution adopted in this embodiment is a preparation method of SLA elastic photosensitive resin for 3D printing, and the steps of the preparation method are:

[0036] (1) Add the monomer raw materials, initiators, defoamers, leveling agents, toughened microspheres and pigments weighed in advance to the mixer in turn, and stir fully to obtain a mixed liquid; the stirring speed is 350r / min;

[0037] In parts by weight, the monomer raw material is 40 parts of bisphenol A diglycidyl ether diacrylate, and the initiator is 2.1 parts of bis-(2,4,6)-trimethylbenzoyl phenyl oxidation Phosphine, defoamer is 0.03 parts of Airex 986, leveling agent is 0.06 parts of BYK 371, toughening microspheres is 10 parts of Expancel 043DU80, pigment is 2 parts of titanium dioxide;

[0038](2) Add resin raw materials and toughened rubber to the mixed liquid obtained in the step (1) at 60° C. and stirring conditions, stir evenly and sieve to obtain SLA elastic photosensitive resi...

Embodiment 3

[0043] The technical solution adopted in this embodiment is a preparation method of SLA elastic photosensitive resin for 3D printing, and the steps of the preparation method are:

[0044] (1) Add the monomer raw materials, initiators, defoamers, leveling agents, toughened microspheres and pigments weighed in advance to the mixer in sequence, and stir fully to obtain a mixed liquid; the stirring speed is 400r / min;

[0045] In parts by weight, the monomer raw material is 40 parts of 4-hydroxybutyl acrylate, the initiator is 4.9 parts of 1-hydroxy-cyclohexyl benzophenone, the defoamer is 0.02 parts of BYK 055, and the leveling agent is 0.03 parts of Flow 300, 15 parts of Expancel 909DU80 for toughened microspheres, 0.05 parts of titanium dioxide for pigments;

[0046] (2) Add resin raw materials and toughened rubber to the mixed liquid obtained in the step (1) at 60° C. and stirring conditions, stir evenly and sieve to obtain SLA elastic photosensitive resin for 3D printing. T...

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Abstract

The invention discloses a SLA elastic photosensitive resin for 3D printing. The SLA elastic photosensitive resin for 3D printing is prepared from the following raw materials in parts by weight: 30-80parts of a monomer raw material, 10-70 parts of a resin raw material, 5-30 parts of toughening rubber, 2-20 parts of toughening microspheres, 0.5-5 parts of an initiator, 0.01-0.1 part of a defoamer,0.03-1 part of a flatting agent and 0.02-5 part of a pigment. The SLA elastic photosensitive resin is prepared by mixing the raw material components and stirring, defoaming and screening the mixture.The resin product is excellent in resilience and flexure resistance and has a silica gel-like texture. The elongation at break is 200-250%, the hardness is 35-45A, the resin is free of shrinkage distortion, high in printing success rate and high in surface precision, can be used for rollover manufacturing by replacing silica gel and can meet the production and manufacturing demands of products such as shoe materials and spacers and washers.

Description

technical field [0001] The invention relates to a resin and a preparation method thereof, in particular to an SLA elastic photosensitive resin for 3D printing and a preparation method thereof, and belongs to the field of 3D printing new material development. Background technique [0002] According to the forming technology, 3D printing can be mainly divided into molten material printing and forming, adhesive material printing and forming, and light-curing printing and forming. Photocuring 3D printing is a molding technology that uses photosensitive resin to rapidly undergo polymerization reaction under the irradiation of a specific range of wavelength light source, and the resin is transformed from liquid to solid. Stereo-curing 3D printing is mainly divided into two molding technologies, SLA and DLP. Among them, SLA molding technology has been widely concerned and recognized by the market due to its outstanding advantages such as high efficiency, sample precision and high s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/08C08L81/04C08L9/02C08L83/04C08L15/00C08K3/22C08F283/00C08F220/32C08F222/20C08F220/20C08F222/14C08F220/18C08F220/24B33Y70/00
Inventor 赵茜陶霖珊
Owner 浙江浙创三维科技有限公司
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