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
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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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