The invention discloses a temperature-sensing
wax mixture for a temperature-sensing component, comprising
paraffin wax and heat-conducting carbon fibres having a heat
conductivity coefficient of greater than 450 w / m.k. A preparation method for the temperature-sensing
wax mixture comprises the following steps of: proportioning the
paraffin wax and the heat-conducting carbon fibres in a certain proportioning ratio by weight, uniformly mixing, and then
grinding for 50-120 hours by adopting a high-energy
ball mill under the protection of an
inert gas, thus
coating a layer of
paraffin wax protecting film around the heat-conducting carbon fibres, and then obtaining the temperature-sensing
wax mixture. According to the temperature-sensing wax mixture, the heat-conducting carbon fibres are used for replacing
copper powder, so that the cost is low, and the
thermal expansion is good, and the selected heat-conducting carbon fibres have a heat
conductivity coefficient of greater than 450 w / m.k, so that a response speed for
temperature sense is greatly increased, and adaptability to application occasions with a high sensitivity requirement on the temperature-sensing component can be met; simultaneously, the heat-conducting carbon fibres and the paraffin wax are mixed and then ground by adopting the high-energy
ball mill, thus
coating a layer of paraffin wax protecting film around the heat-conducting carbon fibres, so that the
heat sensitivity of the whole temperature-sensing wax mixture can be improved, and the process is simple and beneficial to industrialized production.