Low-shrinkage polypropylene material suitable for 3D printing and preparation method thereof
A low-shrinkage polypropylene and 3D printing technology, applied in the field of 3D printing materials, can solve the problems of low dimensional accuracy of printed products, low dimensional accuracy of consumables, and large shrinkage of consumables, etc., to achieve the goal of expanding the scope of use, stable application, and low cost Effect
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Embodiment 1
[0044] 100 parts of homopolypropylene (brand name: T30H, Donghua Energy (Zhangjiagang) New Material Co., Ltd.), 0.1 part of catalyst dibutyltin dilaurate, 0.2 part of initiator dicumyl peroxide, 2.5 parts of vinyl triethyl Oxysilane, 0.06 parts of β-nucleating agent, 10 parts of talcum powder, and 0 parts of calcium carbonate were mixed uniformly in a high mixer.
[0045] Feed the mixture through the main feed port of the twin-screw extruder, add 0.2 parts of stabilizer and 3 parts of glass fiber from the side feed port, cool in the water tank, and pelletize with a pelletizer to obtain granular modified Polypropylene material.
[0046] The granular modified polypropylene material is extruded through a single-screw extruder to obtain a filamentous 3D printing polypropylene filament.
Embodiment 2
[0048] 100 parts of homopolypropylene (grade: S1003, Donghua Energy (Ningbo) New Material Co., Ltd.), 0.2 parts of catalyst dibutyltin dilaurate, 0.1 part of initiator dicumyl peroxide, 2 parts of vinyl triethyl Oxysilane, 0.06 parts of β-nucleating agent, 10 parts of talc, 5 parts of calcium carbonate, and mix them evenly in a high mixer.
[0049] Feed the mixture through the main feeding port of the twin-screw extruder, add 0.2 parts of stabilizer and 5 parts of glass fiber from the side feeding port, cool in the water tank, and pelletize with a pelletizer to obtain granular modified Polypropylene material.
[0050] The granular modified polypropylene material is extruded through a single-screw extruder to obtain a filamentous 3D printing polypropylene filament.
Embodiment 3
[0052] 100 parts of homopolypropylene (brand: M151H, Donghua Energy (Zhangjiagang) New Material Co., Ltd.), 0.2 parts of catalyst dibutyltin dilaurate, 0.2 parts of initiator dicumyl peroxide, 2 parts of vinyl triethyl Oxysilane, 0 parts of β-nucleating agent, 5 parts of talcum powder, 5 parts of calcium carbonate, mixed evenly in a high mixer.
[0053]Feed the mixture through the main feed port of the twin-screw extruder, add 0.2 parts of stabilizer and 7 parts of glass fiber from the side feed port, cool in the water tank, and pelletize with a pelletizer to obtain granular modified Polypropylene material.
[0054] The granular modified polypropylene material is extruded through a single-screw extruder to obtain a filamentary 3D printing polypropylene filament.
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