Degradable polymer/natural mineal filler composite material and preparation method thereof
A technology of natural minerals and composite materials, applied in the field of degradable polymer composite materials and its preparation, can solve the problems of non-degradable, expensive, white pollution, etc.
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Embodiment 1-4
[0011] 400 mesh calcium carbonate and polymethyl ethylene carbonate are melted and blended to prepare a degradable composite material at 180°C at a mixing speed of 35-180rrpm and a mixing time of 5 minutes in a melt mixing equipment. The material was compressed with a flat vulcanizer, and the mechanical properties were tested according to the ISO 527-2 standard. The composition and properties of the composite material are shown in Table 1. It can be seen from Table 1 that the strength and modulus of the calcium carbonate reinforced material are greatly improved compared to the base material.
Embodiment 5
[0013] The 1250 mesh calcium carbonate and polymethyl ethylene carbonate are melted and blended to prepare a degradable composite material at 180°C at a mixing speed of 35-180rrpm and a mixing time of 5 minutes in a melt mixing equipment. The material was compressed with a flat vulcanizer, and the mechanical properties were tested according to the ISO 527-2 standard. The composition and properties of the composite material are shown in Table 1. It can be seen from Table 1 that the strength and modulus of the calcium carbonate reinforced material are greatly improved compared to the base material.
Embodiment 6-8
[0015] The nanometer calcium carbonate and polymethyl ethylene carbonate are melted and blended to prepare a degradable composite material in a melt mixing equipment at 180°C, a mixing speed of 35-180 rrpm, and a mixing time of 5 minutes. The material was compressed with a flat vulcanizer, and the mechanical properties were tested according to the ISO 527-2 standard. The composition and properties of the composite material are shown in Table 1. It can be seen from Table 1 that the strength and modulus of the calcium carbonate reinforced material are improved to a certain extent compared with the base material. As the shear rate increases, the performance of the composite material becomes worse.
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