Spherical styrene-butadiene rubber for 3D printing and preparation method thereof

A styrene-butadiene rubber and 3D printing technology, applied in the field of 3D printing materials, can solve the problems of low adhesive force of styrene-butadiene rubber material, low raw rubber strength, narrow particle size distribution, etc., to improve raw rubber strength and simple preparation method. , the effect of narrow particle size distribution

Active Publication Date: 2016-04-20
台州科金中高技术转移有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the requirements of 3D printing technology for powder materials, and the defects of styrene-butadiene rubber materials such as low adhesion and low raw rubber strength. The present invention uses the seed emulsion polymerization method and uses monodisperse polystyrene microspheres as the core , prepared by emulsion polymerization, graft copolymerization with butadiene monomer and styrene monomer, the prepared styrene-butadiene rubber latex is also monodisperse spherical, and the styrene-butadiene rubber latex is coagulated and co-precipitated by the filler material to prepare the styrene-butadiene rubber powder material. The particle size of the powder is 10~100μm, the particle size distribution is narrow, and the performance is stable, which can meet the requirements of 3D printing for powder materials, and is of great significance to the development of 3D printing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1) Add 10 parts by weight of polystyrene microspheres, 0.2 parts by weight of emulsifier sodium lauryl sulfate and water into a container, and ultrasonically disperse for 30 minutes. The polystyrene microspheres are evenly dispersed, and a milky white microsphere emulsion is obtained;

[0046] 2) 70 parts by weight of butadiene monomer, 20 parts by weight of styrene monomer and 0.3 part by weight of emulsifier sodium lauryl sulfate are stirred and emulsified with water at high speed to obtain a mixed monomer emulsion,

[0047] 3) Transfer the microsphere emulsion in step 1) to the reactor, add 0.05 parts by weight of initiator azobisisobutyronitrile, gradually add the monomer emulsion obtained in step 2) into the reactor, control the feeding speed of the monomer emulsion, and start Stirring initiates the polymerization reaction. After the addition of the monomer emulsion is completed, the terminator alkylhydroxylamine is added to terminate the reaction to obtain styrene-...

Embodiment 2

[0050] 1) Add 5 parts by weight of polystyrene microspheres, 0.1 part by weight of emulsifier sodium dodecylbenzene sulfonate and water into the container, and disperse ultrasonically for 20 minutes. The polystyrene microspheres are evenly dispersed, and a milky white microsphere emulsion is obtained;

[0051] 2) 80 parts by weight of butadiene monomer, 20 parts by weight of styrene monomer and 0.3 part by weight of emulsifier sodium dodecylbenzenesulfonate are stirred and emulsified with water at high speed to obtain a mixed monomer emulsion,

[0052] 3) Transfer the microsphere emulsion in step 1) to the reactor, add 0.02 parts by weight of the initiator dimethyl azobisisobutyrate, gradually add the monomer emulsion obtained in step 2) into the reactor, and control the feeding of the monomer emulsion Speed, start stirring to initiate the polymerization reaction, after the monomer emulsion is added, add the terminator isopropyl hydroxylamine to terminate the reaction, and obta...

Embodiment 3

[0055] 1) Add 15 parts by weight of polystyrene microspheres, 0.3 parts by weight of emulsifier potassium lauryl phosphate and water into the container, ultrasonically disperse for 30 minutes, the polystyrene microspheres are evenly dispersed, and a milky white microsphere emulsion is obtained;

[0056] 2) Stir and emulsify 70 parts by weight of butadiene monomer, 20 parts by weight of styrene monomer and 0.4 part by weight of emulsifier potassium lauryl phosphate with water at high speed to obtain a mixed monomer emulsion,

[0057] 3) Transfer the microsphere emulsion in step 1) to the reactor, add 0.1 parts by weight of the initiator dibenzoyl peroxide, gradually add the monomer emulsion obtained in step 2) into the reactor, control the feeding speed of the monomer emulsion, and start Stirring initiates the polymerization reaction. After the addition of the monomer emulsion is completed, the terminator isopropyl hydroxylamine acetate is added to terminate the reaction to obta...

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Abstract

The invention relates to a spherical styrene-butadiene rubber material for 3D printing. The material is characterized in that a structural core is polystyrene microspheres; the material is prepared from, by weight, 5-20 parts of polystyrene microspheres, 60-80 parts of butadiene monomers, 20-30 parts of styrene monomers, 0.2-1 part of an emulsifying agent, 0.02-0.5 part of an initiator, 0.02-0.1 part of a terminating agent and 80-120 parts of a filling material. Styrene-butadiene rubber latex is prepared through a seeding emulsion polymerization method in which the polystyrene microspheres serve as the core and the polystyrene microspheres, the butadiene monomers and the styrene monomers are grafted and copolymerized, the styrene-butadiene rubber latex and the filling materials are coagulated into powder, the particle size is 10-100 micrometers, particle size distribution is narrow, performance is uniform and stable, and the spherical styrene-butadiene rubber material can be directly applied as a 3D printing material.

Description

technical field [0001] The invention relates to a styrene-butadiene rubber and a preparation method thereof. More specifically, the invention relates to a spherical styrene-butadiene rubber for 3D printing and a preparation method thereof, belonging to the field of 3D printing materials. Background technique [0002] 3D printing is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. It is also called augmentation. It is fast in manufacturing and can fully reproduce the three-dimensional effect, so that product design and mold production can be carried out simultaneously, and the integration of design and manufacturing can be realized. A wide range of materials can be used on 3D printing equipment, including metal materials, inorganic powder materials, ceramic materials, polymer materials, wax, paper, etc. [0003] At present, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F257/02C08F212/08C08F236/06C08F2/26B33Y70/00
CPCC08F2/26C08F257/02C08F212/08C08F236/06
Inventor 陈庆叶任海陈兵
Owner 台州科金中高技术转移有限公司
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