Reflective film with conductive and heat conducting surface layer and preparation method of graphene masterbatch
An electrical and thermal conductivity, graphene technology, applied in reflective reflectors, layered products, instruments, etc., can solve the problem of poor heat dissipation of the reflective film, and achieve non-uniform visual effects, good electrical conductivity, fast and uniform heat dissipation. Effect
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preparation example Construction
[0046] The preparation method of graphene master batch provided by the invention may further comprise the steps:
[0047] (1) Premixing a certain proportion of graphene powder and ethylene glycol by means of ultrasonic dispersion to prepare a graphene dispersion;
[0048](2) Adopt direct esterification process and in-situ polymerization method: put terephthalic acid and ethylene glycol into the reaction kettle according to different ratios, and add a certain amount of catalyst, stabilizer ethylene glycol antimony, phosphoric acid and different content of graphene dispersion, the whole process is carried out under the protection of nitrogen, the nitrogen pressure is set to 0.3MPa, the stirring speed is 70r / min, the esterification temperature is 240°C, and the temperature is gradually raised to 210°C, and the esterification begins. When the steamed-off amount reaches 90% of the theoretical value, the pressure is released to normal pressure, and the esterification is completed. ...
Embodiment 1
[0066] The invention provides a reflective film with a conductive and heat-conducting surface layer and a preparation method of a graphene masterbatch, the reflective film includes a foam core layer and a conductive and heat-conducting surface layer, and the conductive and heat-conducting surface layer is arranged on one of the foam core layers side; the conductive and thermally conductive surface layer includes graphene.
[0067] In the preparation process, the foam core layer includes 5% resin masterbatch and 95% PET, and the resin masterbatch includes 90% TiO 2 and 10% TPX.
[0068] The ratio of synthetic raw materials and synthetic conditions of graphene masterbatch are shown in Table 1.
[0069] The reflective film was prepared with the prepared graphene masterbatch, the ratio of the conductive and thermal surface layer and the performance test results of the reflective film are shown in Table 2.
Embodiment 2
[0071] A reflective film with an electrically and thermally conductive surface layer as provided in Example 1.
[0072] The ratio of synthetic raw materials and synthetic conditions of graphene masterbatch are shown in Table 1.
[0073] The reflective film was prepared with the prepared graphene masterbatch, the ratio of the conductive and thermal surface layer and the performance test results of the reflective film are shown in Table 2.
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