Rubber plug material for blood specimen collection and preparation method thereof
A technology for collecting blood samples and rubber plugs, which is applied in the field of rubber plug materials for collecting blood samples and their preparation, and can solve the problems of influence, poor performance, poor sealing performance and the like
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Embodiment 1
[0013] The present invention is formed by mixing the following raw materials according to weight percentage: 40% of butyl rubber, 20% of ethylene-propylene copolymer, 30% of filler, 9% of phenolic resin, 1% of coloring agent, and the filler consists of pottery clay, talcum powder, white carbon Black is mixed in a weight ratio of 2:1:1; the viscosity-average molecular weight of butyl rubber is 80,000, the Mooney viscosity ML1+8 (100 °C) is 40 to 70, and the degree of unsaturation is 0.7~1.5mol%. The melting point of ethylene-propylene copolymer is ≤120°C. The preparation method is that the above-mentioned materials are kneaded in a mixer, mixed at 130°C to 190°C, preferably at 140°C to 160°C, and molded by compression molding or injection molding.
Embodiment 2
[0015] The present invention is formed by mixing the following raw materials according to weight percentage: 30% of butyl rubber, 15% of ethylene-propylene copolymer, 50% of filler, 3.5% of phenolic resin, 1.5% of coloring agent, and the filler consists of clay, talcum powder, white carbon Black is mixed in a weight ratio of 2:1:1; the viscosity-average molecular weight of butyl rubber is 80,000, the Mooney viscosity ML1+8 (100 °C) is 40 to 70, and the degree of unsaturation is 0.7~1.5mol%. The melting point of ethylene-propylene copolymer is ≤120°C. The preparation method is that the above-mentioned materials are kneaded in a mixer, mixed at 130°C to 190°C, preferably at 140°C to 160°C, and molded by compression molding or injection molding.
Embodiment 3
[0017] The present invention is formed by mixing the following raw materials according to weight percentage: 40% of butyl rubber, 10% of styrene-based elastomer, 50% of filler, 9.5% of phenolic resin, 0.5% of colorant, and the filler consists of clay, talcum powder, white carbon Black is mixed in a weight ratio of 2:1:1; the viscosity-average molecular weight of butyl rubber is 80,000, the Mooney viscosity ML1+8 (100 °C) is 40 to 70, and the degree of unsaturation is 0.7~1.5mol%. The melting point of ethylene-propylene copolymer is ≤120°C. The preparation method is that the above-mentioned materials are kneaded in a mixer, mixed at 130°C to 190°C, preferably at 140°C to 160°C, and molded by compression molding or injection molding.
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