CN109777024A - A kind of 3D printing SLA elasticity photosensitive resin and preparation method thereof - Google Patents
A kind of 3D printing SLA elasticity photosensitive resin and preparation method thereof Download PDFInfo
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- CN109777024A CN109777024A CN201910015345.7A CN201910015345A CN109777024A CN 109777024 A CN109777024 A CN 109777024A CN 201910015345 A CN201910015345 A CN 201910015345A CN 109777024 A CN109777024 A CN 109777024A
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Abstract
The invention discloses a kind of 3D printing SLA elasticity photosensitive resins, are made of the raw material of following parts by weight: 30-80 parts of raw material monomer, 10-70 parts of resin raw material, 5-30 parts of toughening rubber, 2-20 parts of toughening microballoon, 0.5-5 parts of initiator, 0.01-0.1 parts of defoaming agent, 0.03-1 parts of levelling agent and 0.02-5 parts of pigment；SLA elasticity photosensitive resin is made after stirring, defoaming, sieving after mixing raw material components.The resin resilience performance, warp resistance excellent performance, with eka-silicon glue-like feeling, elongation at break is 200-250%, hardness is in 35-45A, ungauged regions deformation and printing success rate height, surface accuracy height, silica gel can be replaced to carry out overmolded manufacture, and can satisfy the manufacturing demand of the products such as footwear material and washer.
Description
Technical field
The present invention relates to a kind of resins and preparation method thereof, and in particular to a kind of 3D printing SLA elasticity photosensitive resin and
Preparation method belongs to 3D printing new material development field.
Background technique
By forming technique, 3D printing can be broadly divided into melted material printing shaping, adhesives printing shaping and photocuring
Printing shaping.Photocuring 3D printing be using photosensitive resin in particular range wavelength light source irradiate it is lower quickly occur polymerization reaction,
Resin is converted into a kind of solid forming technique by liquid.Photocuring 3D printing is broadly divided into two kinds of forming techniques of SLA and DLP,
Wherein SLA forming technique with its high efficiency, be made exemplar precision and surface smoothness it is high outstanding advantages of, obtain the extensive of market
Concern and approval.Since polymerization reaction feature and 3D printing successively cured molding mode occur for photosensitive resin, lead to 3D printing
Exemplar is made with photo-curing material and haves the shortcomings that contraction distortion, size be not accurate, and performance compared with traditional material it is poor, because
This, it would be highly desirable to ungauged regions are developed, are had excellent performance and diversified photosensitive resin material；Additionally, due to two kinds of molding skills of SLA and DLP
The principle difference of art is different with used light source, i.e., SLA forming technique irradiates liquid using the laser beam of specific wavelength (355nm)
Resin, to line, is finally arrived face and successively carries out photocuring by point, thus storehouse one complete object of formation, and DLP forming technique
Then by the way of digital projection screen, generallys use each layer of 405 or 385nm wave band light source direct irradiation and solidified, from
And the object of a completion is formed, in view of the difference of two kinds of forming techniques, therefore different light sources is corresponded to using different formulations
Resin raw material, and DLP technology can not make resin used in SLA technology generate reaction, resinogen used in different forming techniques
Material can not be used with.
Chinese invention patent CN108170003A discloses a kind of elastic photosensitive resin of DLP 3D printing and its preparation side
Method, photosensitive resin made from this method print that entity shrinking percentage is low and precision is high.Chinese invention patent CN105175645A is public
A kind of 3D printing photosensitive resin material and preparation method containing macromolecular elastomer is opened, photosensitive resin made from this method is beaten
Entity is printed off, elongation at break is between 51-82%.Photosensitive resin elongation at break made from the above method is lower, it is difficult to full
Sufficient overmolded manufacture and client's actual demand.
Summary of the invention
The technical problem to be solved in the invention, which is that, to be overcome the deficiencies of existing technologies, and a kind of 3D printing SLA is provided
Elastic photosensitive resin and preparation method thereof, the resin elongation at break is in 200-250%, and hardness is in 35-45A, like silica gel
Texture, the obtained exemplar ratio of briquetting of printing is high, has splendid printing precision and surface flatness, ungauged regions deformation and warp resistance
It has excellent performance, can satisfy the productions manufacture demand such as overmolded manufacture, sole design and washer；And the preparation method
Step is simple and efficient, and has splendid popularization space and market value.
To solve the above problems, the invention adopts a technical scheme as:
A kind of 3D printing SLA elasticity photosensitive resin, the SLA elasticity photosensitive resin by following parts by weight raw material group
At: 30-80 parts of raw material monomer, 10-70 parts of resin raw material, 5-30 parts of toughening rubber, 2-20 parts of toughening microballoon, initiator 0.5-5
Part, 0.01-0.1 parts of defoaming agent, 0.03-1 parts of levelling agent and 0.02-5 parts of pigment.
Above-mentioned 3D printing SLA elasticity photosensitive resin, it is preferable that the raw material monomer be 4- hydroxybutyl acrylate,
Lauryl acrylate, acrylic acid isononyl ester, acrylic acid normal octane base ester, 2- acrylic acid (tetrahydro -2- furyl) methyl esters, 1,6-
Hexanediyl ester, diglycidyl ethers of bisphenol-A diacrylate, acrylic acid trifluoro ethyl ester, in acrylic acid octafluoro pentyl ester
One kind or several mixture.It is further preferred that the raw material monomer is that lauryl acrylate and bisphenol A diglycidyl are sweet
The combination of oily ether diacrylate.
Above-mentioned 3D printing SLA elasticity photosensitive resin, it is preferable that the resin raw material is organic silicon polyurethane acrylic acid
One of ester, polybutadiene polyurethane acrylate, polyether urethane, polyether-polyurethane methacrylate or
Several mixture.It is further preferred that the resin raw material is polyether urethane.
Above-mentioned 3D printing SLA elasticity photosensitive resin, it is preferable that the toughening rubber is liquid nitrile rubber, liquid is poly-
One of sulphur rubber, liquid silastic, Breakup of Liquid Ring oxidation polybutadiene or several mixture.It is further preferred that institute
Stating toughening rubber is liquid silastic.
Above-mentioned 3D printing SLA elasticity photosensitive resin, it is preferable that toughening microballoon be Expancel 980DU120,
Expancel 950DU120、Expancel 930DU120、Expancel 909DU80、Expancel 043DU80、
One of Expancel 551DU40 or several mixture.It is further preferred that the toughening microballoon is Expancel
909DU80。
Above-mentioned 3D printing SLA elasticity photosensitive resin, it is preferable that the initiator is 2- hydroxy-2-methyl-phenyl third
One of ketone -1,1- hydroxy-cyciohexyl Benzophenone, double-(2,4,6)-trimethylbenzoyl phenyl phosphine oxide are several
Mixture.It is further preferred that the initiator is double-(2,4,6)-trimethylbenzoyl phenyl phosphine oxide.
Above-mentioned 3D printing SLA elasticity photosensitive resin, it is preferable that the defoaming agent is BYK 055, BYK 020, BYK
088, one of Foamex N, Airex986 or several mixture.It is further preferred that the defoaming agent is BYK
088。
Above-mentioned 3D printing SLA elasticity photosensitive resin, it is preferable that the levelling agent is BYK 333, BYK 371, BYK
361, one of Flow 425, Flow300 or several mixture.It is further preferred that the levelling agent is BYK
361。
Above-mentioned 3D printing SLA elasticity photosensitive resin, it is preferable that pigment is titanium dioxide.
The raw materials used present invention is commercial product.
The present invention also provides a kind of 3D printing preparation methods of SLA elasticity photosensitive resin comprising following steps:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin.
Preferably, the revolving speed that stirs at low speed of blender is 300-400r/min in the step (1)；In the step (2)
The speed of agitator of blender is 500-600r/min；The strainer mesh number of sieving operation is 80-120 mesh；It is taken out in the step (3) true
Air temperature degree is 60-70 DEG C, time 3-4h.
The advantages and benefits of the present invention are:
The product of 3D printing SLA elasticity photosensitive resin has silica gel texture, and hardness is in 35-45A, elongation at break
200-250% has the advantages that lower shrinkage, warp resistance and ratio of briquetting are high, can effectively reduce research and development difficulty, improves research and development effect
Rate, the R&D process of the products such as great convenience silica gel, industrial rubber；
The 3D printing is simple and efficient with the photosensitive process for preparing resins step of SLA elasticity, has splendid popularization space and city
Field value；
The 3D printing can be used cooperatively with SLA elasticity photosensitive resin with the SLA printer of market mainstream, be led to splendid
The property used.
Specific embodiment
The present invention will be further illustrated in the following example.
Embodiment 1
The present embodiment uses technical solution for a kind of preparation method of 3D printing SLA elasticity photosensitive resin, the preparation
The step of method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；Mixing speed is 350r/min；
According to parts by weight, the raw material monomer is 40 parts of 2- acrylic acid (tetrahydro -2- furyl) methyl esters, initiator 2
Part 2- hydroxy-2-methyl-phenylacetone -1, defoaming agent are 0.05 part of Foamex N, levelling agent is 0.05 part of Flow 425, toughening
Microballoon is 5 parts of Expancel 930DU120, pigment is 2 parts of titanium dioxides；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin.Mixing speed is 500r/min；Sieving operation
Strainer mesh number be 80 mesh；
According to parts by weight, the resin raw material is 40 parts of polyether urethanes, toughening rubber is 10 parts of liquid
Polysulfide rubber；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin；Vaporization temperature is 60
DEG C, time 3h.
Model printing is carried out to SLA elasticity photosensitive resin made from step (3) using SLA photocuring 3D printer, obtains mould
Type surface is smooth and fineness is high, and hardness is 42A, elongation at break 214% after the mold curing；Service machine is Shanghai
The 100 model SLA printer of lite of Lian Tai Science and Technology Co., Ltd. production, prints power: 350mw, filling speed:
5000mm/s；Surface hardness is tested using the measurement examination of shore A type hardness tester, using U.S. INSTRON3343 type electronics ten thousand
Energy Material Testing Machine carries out elongation at break test to batten.
Embodiment 2
The present embodiment uses technical solution for a kind of preparation method of 3D printing SLA elasticity photosensitive resin, the preparation
The step of method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；Mixing speed is 350r/min；
According to parts by weight, the raw material monomer is that 40 parts of diglycidyl ethers of bisphenol-A diacrylates, initiators are
2.1 parts of double-(2,4,6)-trimethylbenzoyl phenyl phosphine oxides, defoaming agents are 0.03 part of Airex 986, levelling agent 0.06
Part BYK 371, toughening microballoon are 10 parts of Expancel 043DU80, pigment is 2 parts of titanium dioxides；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin.Mixing speed is 500r/min；Sieving operation
Strainer mesh number be 90 mesh；
According to parts by weight, the resin raw material is 30 parts of polybutadiene polyurethane acrylate, toughening rubber is 15 parts
Liquid nitrile rubber；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin；Vaporization temperature is 65
DEG C, time 4h.
Model printing is carried out to SLA elasticity photosensitive resin made from step (3) using SLA photocuring 3D printer, obtains mould
Type surface is smooth and fineness is high, and hardness is 39A, elongation at break 221% after the mold curing；SLA light in the present embodiment
Equipment and print parameters, the hardness determination operation and elongation at break detection operation for solidifying 3D printer are complete with embodiment 1
It is identical.
Embodiment 3
The present embodiment uses technical solution for a kind of preparation method of 3D printing SLA elasticity photosensitive resin, the preparation
The step of method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；Mixing speed is 400r/min；
According to parts by weight, the raw material monomer is 40 parts of 4- hydroxybutyl acrylates, initiator is 4.9 parts of 1- hydroxyls
Base-phenylcyclohexyl ketone, defoaming agent are 0.02 part of BYK 055, levelling agent is 0.03 part of Flow 300, toughening microballoon is 15 parts
Expancel 909DU80, pigment are 0.05 part of titanium dioxide；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin.Mixing speed is 500r/min；Sieving operation
Strainer mesh number be 80 mesh；
According to parts by weight, the resin raw material is 20 parts of polyether-polyurethane methacrylates, toughening rubber is 20 parts
Liquid silastic；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin；Vaporization temperature is 70
DEG C, time 4h.
Model printing is carried out to SLA elasticity photosensitive resin made from step (3) using SLA photocuring 3D printer, obtains mould
Type surface is smooth and fineness is high, and hardness is 37A, elongation at break 219% after the mold curing；SLA light in the present embodiment
Equipment and print parameters, the hardness determination operation and elongation at break detection operation for solidifying 3D printer are complete with embodiment 1
It is identical.
Embodiment 4
The present embodiment uses technical solution for a kind of preparation method of 3D printing SLA elasticity photosensitive resin, the preparation
The step of method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；Mixing speed is 400r/min；
According to parts by weight, the raw material monomer is 40 parts of 1,6- hexanediyl esters, initiator by 1 part of 2- hydroxyl
Base -2- methylphenyl acetone -1 and 1.5 parts of 1- hydroxy-cyciohexyl Benzophenone compositions, defoaming agent are 0.03 part of BYK 020, levelling
Agent is 0.07 part of BYK 361, toughening microballoon is 17 parts of Expancel 980DU120, pigment is 0.4 part of titanium dioxide；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin.Mixing speed is 600r/min；Sieving operation
Strainer mesh number be 80 mesh；
According to parts by weight, the resin raw material is 10 parts of organosilicon polyurethane acrylates, toughening rubber is 30 parts of liquid
Body epoxidized polybutadiene；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin；Vaporization temperature is 70
DEG C, time 4h.
Model printing is carried out to SLA elasticity photosensitive resin made from step (3) using SLA photocuring 3D printer, obtains mould
Type surface is smooth and fineness is high, and hardness is 36A, elongation at break 233% after the mold curing；SLA light in the present embodiment
Equipment and print parameters, the hardness determination operation and elongation at break detection operation for solidifying 3D printer are complete with embodiment 1
It is identical.
Embodiment 5
The present embodiment uses technical solution for a kind of preparation method of 3D printing SLA elasticity photosensitive resin, the preparation
The step of method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；Mixing speed is 400r/min；
According to parts by weight, the raw material monomer is 35 parts of lauryl acrylate, 25 parts of acrylic acid isononyl ester, initiator
For double -2 parts of (2,4,6)-trimethylbenzoyl phenyl phosphine oxide, defoaming agent be 0.1 part of Foamex N, levelling agent is 0.1 part
BYK 333, toughening microballoon are 2 parts of Expancel 950DU120, pigment is 0.8 part of titanium dioxide；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin.Mixing speed is 500r/min；Sieving operation
Strainer mesh number be 120 mesh；
According to parts by weight, the resin raw material is by 5 parts of polyether urethanes and 5 parts of polyether-polyurethane methyl-props
Olefin(e) acid ester composition, toughening rubber are made of 12 parts of liquid nitrile rubber and 13 parts of liquid polysulfide rubbers；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin；Vaporization temperature is 60
DEG C, time 3h.
Model printing is carried out to SLA elasticity photosensitive resin made from step (3) using SLA photocuring 3D printer, obtains mould
Type surface is smooth and fineness is high, and hardness is 41A, elongation at break 207% after the mold curing；SLA light in the present embodiment
Equipment and print parameters, the hardness determination operation and elongation at break detection operation for solidifying 3D printer are complete with embodiment 1
It is identical.
Embodiment 6
The present embodiment uses technical solution for a kind of preparation method of 3D printing SLA elasticity photosensitive resin, the preparation
The step of method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；Mixing speed is 400r/min；
According to parts by weight, the raw material monomer is by 22 parts of acrylic acid normal octane base esters and 38 parts of 2- acrylic acid (tetrahydro -2-
Furyl) methyl esters forms, initiator is 3 parts of 1- hydroxy-cyciohexyl Benzophenones, defoaming agent is that 0.08 part of BYK 088, levelling agent are
0.07 part of BYK 371, toughening microballoon are 20 parts of Expancel 551DU40, pigment is 0.85 part of titanium dioxide；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin.Mixing speed is 500r/min；Sieving operation
Strainer mesh number be 110 mesh；
According to parts by weight, the resin raw material is by 4 parts of organosilicon polyurethane acrylates and 6 parts of polybutadiene polyurethanes
Acrylate, toughening rubber are that 6 parts of Breakup of Liquid Ring aoxidize polybutadiene；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin；Vaporization temperature is 60
DEG C, time 3h.
Model printing is carried out to SLA elasticity photosensitive resin made from step (3) using SLA photocuring 3D printer, obtains mould
Type surface is smooth and fineness is high, and hardness is 43A, elongation at break 201% after the mold curing；SLA light in the present embodiment
Equipment and print parameters, the hardness determination operation and elongation at break detection operation for solidifying 3D printer are complete with embodiment 1
It is identical.
Embodiment 7
The present embodiment uses technical solution for a kind of preparation method of 3D printing SLA elasticity photosensitive resin, the preparation
The step of method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；Mixing speed is 400r/min；
According to parts by weight, the raw material monomer is by 8 parts of diglycidyl ethers of bisphenol-A diacrylates, 7 parts of acrylic acid three
Fluorine ethyl ester and 15 parts of acrylic acid octafluoro pentyl ester compositions, initiator are 2.7 parts of double-(2,4,6)-trimethylbenzoyl phenyl oxidations
Phosphine, defoaming agent are 0.02 part of BYK 088, levelling agent is 0.68 part of BYK 371, toughening microballoon is by 4 parts of Expancel 909DU80
It is 1.6 parts of titanium dioxides with 3 parts of Expancel 043DU80, pigment；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin.Mixing speed is 500r/min；Sieving operation
Strainer mesh number be 80 mesh；
According to parts by weight, the resin raw material is by 21 parts of organosilicon polyurethane acrylates and 29 parts of polyether-polyurethane first
Base acrylate composition, toughening rubber are made of 2 parts of liquid nitrile rubber and 6 parts of Breakup of Liquid Ring oxidation polybutadiene；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin；Vaporization temperature is 70
DEG C, time 3h.
Model printing is carried out to SLA elasticity photosensitive resin made from step (3) using SLA photocuring 3D printer, obtains mould
Type surface is smooth and fineness is high, and hardness is 38A, elongation at break 241% after the mold curing；SLA light in the present embodiment
Equipment and print parameters, the hardness determination operation and elongation at break detection operation for solidifying 3D printer are complete with embodiment 1
It is identical.
Embodiment 8
The present embodiment uses technical solution for a kind of preparation method of 3D printing SLA elasticity photosensitive resin, the preparation
The step of method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；Mixing speed is 400r/min；
According to parts by weight, the raw material monomer is by 19 parts of 4- hydroxybutyl acrylates and 11 parts of lauryl acrylate groups
At, initiator by 1 part of 1- hydroxy-cyciohexyl Benzophenone and 2 parts of double-(2,4,6)-trimethylbenzoyl phenyl phosphine oxide groups
At, defoaming agent be 0.08 part of Airex986, levelling agent is 0.42 part of Flow 300, toughening microballoon is 5 parts of Expancel
909DU80, pigment are 3.5 parts of titanium dioxides；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin.Mixing speed is 500r/min；Sieving operation
Strainer mesh number be 80 mesh；
According to parts by weight, the resin raw material is 40 parts of polybutadiene polyurethane acrylate, toughening rubber is 18 parts
Liquid nitrile rubber；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin；Vaporization temperature is 70
DEG C, time 4h.
Model printing is carried out to SLA elasticity photosensitive resin made from step (3) using SLA photocuring 3D printer, obtains mould
Type surface is smooth and fineness is high, and hardness is 40A, elongation at break 205% after the mold curing；SLA light in the present embodiment
Equipment and print parameters, the hardness determination operation and elongation at break detection operation for solidifying 3D printer are complete with embodiment 1
It is identical.
Embodiment 9
The present embodiment uses technical solution for a kind of preparation method of 3D printing SLA elasticity photosensitive resin, the preparation
The step of method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, according to
It is secondary to be added in blender, it is sufficiently stirred to obtain mixing liquid；Mixing speed is 400r/min；
According to parts by weight, the raw material monomer is by 32 parts of lauryl acrylates and 18 parts of diglycidyl ethers of bisphenol-As two
Acrylate composition, initiator are that 3 parts of double-(2,4,6)-trimethylbenzoyl phenyl phosphine oxides, defoaming agents are 0.03 part of BYK
088, levelling agent is 0.04 part of BYK361, toughening microballoon is 5 parts of Expancel 909DU80, pigment is 0.03 part of titanium dioxide；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing that the step (1) obtains
It in liquid, is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin.Mixing speed is 600r/min；Sieving operation
Strainer mesh number be 120 mesh；
According to parts by weight, the resin raw material is 32 parts of polyether urethanes, toughening rubber is 9 parts of liquid silicons
Rubber；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin；Vaporization temperature is 60
DEG C, time 3h.
Model printing is carried out to SLA elasticity photosensitive resin made from step (3) using SLA photocuring 3D printer, obtains mould
Type surface is smooth and fineness is high, and hardness is 41A, elongation at break 249% after the mold curing；SLA light in the present embodiment
Equipment and print parameters, the hardness determination operation and elongation at break detection operation for solidifying 3D printer are complete with embodiment 1
It is identical.
Finally, it should be noted that obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description
Other various forms of variations or variation out.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
The obvious changes or variations that Shen goes out are still in the protection scope of this invention.
Claims (10)
1. a kind of 3D printing SLA elasticity photosensitive resin, which is characterized in that the SLA elasticity photosensitive resin is by following parts by weight
Several raw material compositions: 30-80 parts of raw material monomer, 5-30 parts of toughening rubber, 2-20 parts of toughening microballoon, draws 10-70 parts of resin raw material
Agent 0.5-5 parts of hair, 0.01-0.1 parts of defoaming agent, 0.03-1 parts of levelling agent and 0.02-5 parts of pigment.
2. 3D printing as described in claim 1 SLA elasticity photosensitive resin, which is characterized in that the raw material monomer is 4- hydroxyl
Base butyl propyleneglycol acid esters, lauryl acrylate, acrylic acid isononyl ester, acrylic acid normal octane base ester, 2- acrylic acid (tetrahydro -2-
Furyl) methyl esters, 1,6 hexanediol diacrylate, diglycidyl ethers of bisphenol-A diacrylate, acrylic acid trifluoro ethyl ester,
A kind of or several mixture in acrylic acid octafluoro pentyl ester.
3. 3D printing as described in claim 1 SLA elasticity photosensitive resin, which is characterized in that the resin raw material is organic
Silicon polyurethane acrylate, polybutadiene polyurethane acrylate, polyether urethane, polyether-polyurethane metering system
One of acid esters or several mixture.
4. 3D printing as described in claim 1 SLA elasticity photosensitive resin, which is characterized in that the toughening rubber is liquid
One of nitrile rubber, liquid polysulfide rubber, liquid silastic, Breakup of Liquid Ring oxidation polybutadiene or several mixture.
5. 3D printing as described in claim 1 SLA elasticity photosensitive resin, which is characterized in that the toughening microballoon is
Expancel 980 DU120、Expancel 950 DU120、Expancel 930 DU120、Expancel 909 DU80、
Expancel 043 DU80, Expancel 551 one of DU40 or several mixture.
6. 3D printing as described in claim 1 SLA elasticity photosensitive resin, which is characterized in that the initiator is 2- hydroxyl-
2- methylphenyl acetone -1,1- hydroxy-cyciohexyl Benzophenone, in double-(2,4,6)-trimethylbenzoyl phenyl phosphine oxide
A kind of or several mixture.
7. 3D printing as described in claim 1 SLA elasticity photosensitive resin, which is characterized in that the defoaming agent is BYK
055, one of BYK 020, BYK 088, Foamex N, Airex986 or several mixture.
8. 3D printing as described in claim 1 SLA elasticity photosensitive resin, which is characterized in that the levelling agent is BYK
333, one of BYK 371, BYK 361, Flow 425, Flow300 or several mixture.
9. the 3D printing a method as claimed in any one of claims 1-8 preparation method of SLA elasticity photosensitive resin, which is characterized in that institute
The step of stating preparation method are as follows:
(1) by the raw material monomer weighed in proportion in advance, initiator, defoaming agent, levelling agent, toughening microballoon and pigment, successively plus
Enter into blender, is sufficiently stirred to obtain mixing liquid；
(2) under 60 DEG C and stirring condition, resin raw material, toughening rubber are added to the mixing liquid that the step (1) obtains
In, it is sieved after mixing evenly, obtains 3D printing SLA elasticity photosensitive resin；
(3) 3D printing obtained after sieving is carried out vacuumizing defoaming with SLA elasticity photosensitive resin.
10. the 3D printing as claimed in claim 9 preparation method of SLA elasticity photosensitive resin, which is characterized in that the step
(1) speed of agitator of blender is 300-400r/min in；
The speed of agitator of blender is 500-600r/min in the step (2)；The strainer mesh number of sieving operation is 80-120 mesh；
And vaporization temperature is 60-70 DEG C in the step (3), time 3-4h.
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Application publication date: 20190521 Assignee: Zhejiang zhechuang 3D Technology Co.,Ltd. Assignor: NINGBO ZHECHUANG TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000689 Denomination of invention: SLA elastic photosensitive resin for 3D printing and preparation method thereof Granted publication date: 20210601 License type: Common License Record date: 20211105 |
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