A kind of recycled environment-friendly elastomer composite material and preparation method thereof
A composite material and elastomer technology, which is applied in the field of new recycled environmentally friendly elastomer composite materials and its preparation, can solve the problem that the physical properties of rubber and plastic composite materials such as tensile strength, elongation at break and tear strength cannot meet the standard requirements at the same time and other problems, to achieve the effect of sustainable development of added value, good tensile strength, and increased added value
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[0026] A method for preparing a novel recycling environment-friendly elastomer composite material, comprising melting and mixing its raw materials; the raw materials include an elastomer composition, a polystyrene composition and an additive composition, the elastomer composition, the polystyrene composition and The mass ratio of the additive composition is: (42.9-91.2): (4.0-38.1): (4.8-19.0); the polystyrene composition includes recycled polystyrene (rPS).
[0027] The mass ratio of the above-mentioned elastomer composition, polystyrene composition and additive composition can be listed as 91.2:4.0:4.8, 80:20:10, 65:35:10, 65:35:15, 42.9:38.1:19.0 Wait.
[0028] Preferably, the elastomeric composition comprises at least two butadiene-styrene copolymers (SBS).
[0029] The mass ratio of butadiene and styrene in the butadiene-styrene copolymer is (20-60): (40-80) such as 20:80, 33:67, 40:60, 42:58, 54:46 or 60:40 etc.
[0030] Preferably, the butadiene-styrene copolymer is ...
Embodiment 1
[0045] (1) The elastomer composition, the polystyrene composition and the additive composition are melt-mixed with a twin-screw extruder at a temperature gradient from 185°C to 220°C and then cooled to 195°C. The stirring rate during the melt-mixing process The temperature is 350rpm / min, and then the water-cooled pelletizer is used for pelletizing to form a new type of recycled and environmentally friendly elastic composite material. Among them, the elastomer composition is composed of 35 parts of SBS1, 20 parts of SBS2 and 10 parts of SBS3; the polystyrene composition is composed of 30 parts of recycled polystyrene (rPS) and 5 parts of polystyrene (PS) GP5000; the additive combination The compound consists of 5 parts white oil B70N and 5 parts talc.
[0046] (2) Add 0.15% (mass) of AC foaming agent and 1phr expansion agent to the elastic composite material prepared in the above step (1), then pre-mix at 100°C through a kneader, and then inject into injection molding at 190°C ...
Embodiment 2
[0048] (1) The elastomer composition, the polystyrene composition and the additive composition are melt-mixed with a twin-screw extruder at a temperature gradient from 185°C to 220°C and then cooled to 195°C. The stirring rate during the melt-mixing process The temperature is 350rpm / min, and then the water-cooled pelletizer is used for pelletizing to form a new type of recycled and environmentally friendly elastic composite material. Among them, the elastomer composition is composed of 45 parts of SBS1, 25 parts of SBS2 and 10 parts of SBS3; the polystyrene composition is composed of 10 parts of recycled polystyrene (rPS) and 10 parts of polystyrene (PS) GP5000; the additive combination The compound consists of 5 parts white oil B70N and 10 parts talc.
[0049] (2) Add 0.15% (mass) of AC foaming agent and 1phr expansion agent to the elastic composite material prepared in the above step (1), then pre-mix at 100°C through a kneader, and then inject into injection molding at 190°...
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