Preparation method for shape memory material based on thermoplastic vulcanized rubber
A thermoplastic vulcanizate and memory material technology, applied in the direction of analyzing materials, using stable tension/pressure to test material strength, strength characteristics, etc., can solve the problems of difficult product flexibility, complicated preparation process, and control, and achieve easy molding, The effect of simple preparation process and convenient preparation
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Embodiment 1
[0027] (1) Draw two parallel scale lines in the middle of the dumbbell-shaped tensile spline of the sheet-like ethylene-acrylic acid copolymer / neoprene blended thermoplastic vulcanizate, and the distance between the scale lines is L 0 =20.00mm, fix it on a simple tensile fixture, and preheat it at 95°C for 10 minutes; wherein, the mass ratio of ethylene-acrylic acid copolymer to chloroprene rubber in the thermoplastic vulcanizate is 6:4;
[0028] (2) Put the preheated thermoplastic vulcanizate under the condition of 95°C, and apply an external force on the stretching fixture to deform the spline. After reaching 100% deformation, stretch it while maintaining the external force. The jig and the spline are quickly immersed in the ice-water mixture to cool down and set the temperature. At this time, the distance between the scale lines is L 1 =40.00mm;
[0029] (3) Remove the sample strip of thermoplastic vulcanizate from the simple tensile fixture, place it naturally at room tem...
Embodiment 2
[0034] (1) Draw two parallel scale lines in the middle of the dumbbell-shaped tensile spline of the sheet-like ethylene-acrylic acid copolymer / neoprene blended thermoplastic vulcanizate, and the distance between the scale lines is L 0 =20.00mm, fix it on a simple tensile fixture, and preheat it at 100°C for 10 minutes; wherein, the mass ratio of ethylene-acrylic acid copolymer to chloroprene rubber in the thermoplastic vulcanizate is 7:3;
[0035] (2) Put the preheated thermoplastic vulcanizate under the condition of 100 ℃, and apply an external force on the stretching fixture to deform the spline. After reaching 100% deformation, under the condition of maintaining the external force, stretch The jig and the spline are quickly immersed in the ice-water mixture to cool down and set the temperature. At this time, the distance between the scale lines is L 1 =40.00mm;
[0036] (3) Remove the sample strip of thermoplastic vulcanizate from the simple tensile fixture, place it natur...
Embodiment 3
[0040] (1) Draw two parallel scale lines in the middle of the dumbbell-shaped tensile spline of the sheet-like ethylene-acrylic acid copolymer / neoprene blended thermoplastic vulcanizate, and the distance between the scale lines is L 0 =20.00mm, fix it on a simple tensile fixture, and preheat it at 95°C for 10 minutes; wherein, the mass ratio of ethylene acrylic acid copolymer to chloroprene rubber in the thermoplastic vulcanizate is 8:2;
[0041] (2) Put the preheated thermoplastic vulcanizate under the condition of 95°C, and apply an external force on the stretching fixture to deform the spline. After reaching 100% deformation, stretch it while maintaining the external force. The jig and the spline are quickly immersed in the ice-water mixture to cool down and set the temperature. At this time, the distance between the scale lines is L 1 =40.00mm;
[0042] (3) Remove the sample strip of thermoplastic vulcanizate from the simple tensile fixture, place it naturally at room tem...
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