High strength 3D printing support material with fast water solubility and preparation method thereof

A support material, 3D printing technology, used in rayon manufacturing, textiles and papermaking, single-component synthetic polymer rayon, etc., can solve the problem of not being able to play a supporting role well, plasticizers that are not environmentally friendly, and support materials Toxicity etc.

Active Publication Date: 2017-03-22
镇江三的新材料有限公司
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The ability of 3D printing technology to manufacture complex products is a huge advantage that traditional manufacturing cannot match. However, when printing complex products in 3D, it is necessary to print a large number of support structures. In this way, the product faces the following problems: ① It is difficult to remove support structures, and mechanical removal is not only time-consuming It is laborious, and it will damage the product or leave marks to affect the appearance of the product; ②The organic solvent dissolves the supporting material, which has toxicity and environmental protection problems
At present, the commonly used water-soluble support material is PVA, but this material has the following disadvantages: ①The material is soft and has low strength, which cannot play a goo

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High strength 3D printing support material with fast water solubility and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step S11: Add 2Kg of acrylonitrile, 1Kg of acrylic acid, 1Kg of methacrylic acid, 2Kg of vinyl acetate, 20g of azobisisobutyronitrile, and 10Kg of toluene into the reaction vessel, stirring continuously, under the condition of constant temperature of 150°C, condensation and reflux After 5 hours of reaction, a pre-neutralized polymer was obtained.

[0028] Step S12: Add 60 g of sodium hydroxide to the pre-neutralized polymer, stir continuously, and react at normal temperature and pressure for 0.5 h to obtain a neutralized polymer.

[0029] Step S13: The neutralized polymer was rotary evaporated for 0.2 h at a temperature of 40° C. and a pressure of −0.1 MPa to obtain a neutralized polymer from which the solvent was removed.

[0030] Step S14: drying the neutralized polymer at 60° C. for 48 hours to obtain a solid neutralized polymer.

[0031] Step S15: Mix 5Kg of neutralizing polymer, 1.25g of antioxidant 1010, 1.25g of antioxidant 168, and 2.5g of calcium stearate, and...

Embodiment 2

[0033] Step S21: Add 2Kg of divinylbenzene, 2Kg of methacrylic acid, 2Kg of ethyl acrylate, 2Kg of vinyl acetate, 100g of ammonium persulfate, and 1Kg of ethyl acetate into the reaction vessel, keep stirring, keep the temperature at 65°C, condense and reflux Under the condition of reacting for 24h, the pre-neutralized polymer was obtained.

[0034] Step S22: Dissolve 800g of lithium hydroxide in 16Kg of ethyl acetate, slowly add to the pre-neutralized polymer, stir continuously, and react at normal temperature and pressure for 24 hours to obtain the neutralized polymer.

[0035] Step S23: The neutralized polymer was rotated and evaporated for 8 hours at a temperature of 90° C. and a pressure of −0.05 MPa to obtain a neutralized polymer from which the solvent was removed.

[0036] Step S24: drying the neutralized polymer at a temperature of 150° C. for 2 hours to obtain a solid neutralized polymer.

[0037] Step S25: Mix 5Kg of neutralizing polymer, 12.5g of antioxidant 1076, ...

Embodiment 3

[0039] Step S31: Add 2Kg of styrene, 2Kg of methacrylic acid, 2Kg of butyl acrylate, 2Kg of vinyl acetate, 48g of benzoyl peroxide, and 2Kg of ethanol into the reaction vessel, stir continuously, and keep the temperature at 80°C, condensing and refluxing Under the reaction for 8h, the pre-neutralized polymer was obtained.

[0040] Step S32: Dissolving 240g of potassium hydroxide in 2Kg of ethanol, slowly adding to the pre-neutralized polymer, stirring constantly, and reacting at normal temperature and pressure for 1 hour to obtain the neutralized polymer.

[0041] Step S33: The neutralized polymer was rotary evaporated for 3 hours at a temperature of 50° C. and a pressure of −0.08 MPa to obtain a neutralized polymer from which the solvent was removed.

[0042] Step S34: drying the neutralized polymer at a temperature of 120° C. for 8 hours to obtain a solid neutralized polymer.

[0043] Step S35: Mix 5Kg of neutralizing polymer, 5g of antioxidant 1010, 5g of antioxidant 168, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a high strength 3D printing support material with fast water solubility and a preparation method thereof. The preparation method comprises that a thermoplastic material monomer, an acrylic monomer and vinyl acetate undergo a solution polymerization reaction to produce a pre-neutralized polymer containing a carboxylic group and an ester group, then the pre-neutralized polymer is subjected to neutralization catalysis to form a carboxylate-alcoholic hydroxyl group neutralization polymer, and the polymer is subjected to solvent removal, drying and extrusion drawing so that a 3D printing water-soluble support wire is obtained. The high strength 3D printing support material has excellent water-soluble properties, a water-soluble rate more than 10 times that of a Stratasys enterprise PC water-soluble support material SR-100 and high strength, solves the problem that the PVA has low strength and cannot play a supporting role, can form a uniform transparent solution after dissolution in water, solves the problem that the dissolved PVA is sticky and muddy and is difficult to treat, prevents a plasticizer and has the characteristics of no toxicity and environmental friendliness.

Description

technical field [0001] The invention relates to the field of preparation of 3D printing materials, in particular to a high-strength 3D printing support material with rapid water solubility and a preparation method thereof. Background technique [0002] The ability of 3D printing technology to manufacture complex products is a huge advantage that traditional manufacturing cannot match. However, when printing complex products in 3D, it is necessary to print a large number of support structures. In this way, the product faces the following problems: ① It is difficult to remove support structures, and mechanical removal is not only time-consuming It is laborious, and it will damage the product or leave marks to affect the appearance of the product; ②The organic solvent dissolves the supporting material, which has toxicity and environmental protection problems. Therefore, water-soluble 3D printing support materials are the best way to solve these problems. At present, the common...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): D01F6/54D01F6/52D01F6/44D01F6/56D01F1/10C08F220/46C08F218/08C08F220/06C08F212/36C08F220/18C08F212/08
CPCD01F1/10D01F6/44D01F6/52D01F6/54D01F6/56C08F212/08C08F212/36C08F218/08C08F220/06C08F220/18C08F220/46C08F220/1804C08F220/1802
Inventor 纪红兵曾永斌王晓红
Owner 镇江三的新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap