A kind of graphene-rubber and its preparation method and application
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A graphene and rubber technology, applied in the field of composite materials, can solve problems such as impossible to obtain real practical effects, and achieve the effects of high tension, high sensitivity and low cost
Active Publication Date: 2019-11-12
郑州福流智能科技有限公司
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Embodiment 1
[0033] A kind of graphene-rubber preparation method, comprises the following steps:
[0034] step one:
[0035] Take by weighing 300mg graphite powder, 200mgPVP (polyvinylpyrrolidone) is dissolved in the mixed solvent that 2ml ethanol and 8ml deionized water form;
[0036] Step two:
[0037] The mixed solution was sealed and sonicated for 24h (240W, T<25°C), then centrifuged (1500r / min, 45min), and the supernatant was taken out;
[0038] Step three:
[0039] The supernatant obtained in the previous step was centrifuged again at a speed of 10,000 r / min for 15 minutes, and the obtained precipitate was washed once with ethanol and taken out, and dried at 60° C. to obtain a dry powder that was graphene;
[0040] Step four:
[0041] Cut out a rubber band with a length of about 4cm and a side diameter of about 1.5mm, after accurately weighing it, soak it in a certain amount of toluene (just immerse the rubber band) and ultrasonicate for 3 hours (240W, T<25°C);
[0042] Step fiv...
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Abstract
The present invention relates to the field of composite materials, particularly to a graphene-rubber, a preparation method and applications thereof. The technical scheme is that the preparation methodcomprises: 1, weighing graphite powder and PVP, and dissolving in a mixed solvent comprising ethanol and deionized water; 2, carrying out sealed ultrasonic treatment on the obtained mixed solution, carrying out centrifugation, and taking the supernatant; 3, carrying out centrifugation on the supernatant, washing the obtained precipitate by using ethanol, taking the washed precipitate, and dryingto obtain dry powder graphene; 4, intercepting a rubber band, precisely weighing, soaking with a certain amount of toluene, and carrying out ultrasonic treatment; and 5, after completing the ultrasonic treatment, transferring the swollen rubber band into the mixed solution of the graphene and DMF (dimethylformamide), carrying out a supercritical reaction in a supercritical reactor, taking the product after the reaction, rinsing three times with deionized water, and drying to obtain the product. According to the present invention, the graphene-rubber has advantages of simple preparation process, low cost and mass production.
Description
technical field [0001] The invention relates to the field of composite materials, in particular to a graphene-rubber and its preparation method and application. Background technique [0002] A sensor is: "a device or device that can sense a specified measured value and convert it into a usable signal according to a certain rule, usually consisting of a sensitive element and a conversion element." A sensor is a detection device that can feel the measured information, and can convert the detected information into electrical signals or other required forms of information output according to certain rules, so as to meet the needs of information transmission, processing, storage, display, recording and control requirements. [0003] Resistance strain sensor (strainauge type transducer) is a resistance sensor with resistance strain gauge as the conversion element. The resistance strain sensor is composed of an elastic sensitive element, a resistance strain gauge, a compensation ...
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