The invention discloses a high-temperature resistant automobile air-conditioning wiring harness and a preparation method thereof. The high-temperature resistant automobile air-conditioning wiring harness consists of two parts, namely a wiring harness shell and a thermal-insulating membrane, wherein the wiring harness shell consists of
natural rubber, a PEEK (Polyetheretherketone) material and
polyvinyl chloride; the thermal-insulating membrane consists of
silicon carbide powder, a high-temperature resistant
fiber,
boron phosphide,
polyethylene and a high-temperature
adhesive. As the wiring harness shell is made of three raw materials, namely the
natural rubber, the PEEK material and the
polyvinyl chloride, as master batch, the strength of the wiring harness shell can be improved, and the preparation efficiency can be improved; the constitution components, namely the
silicon carbide powder, he high-temperature resistant
fiber, the
boron phosphide, the
polyethylene and the like, of the thermal-insulating membrane, are very good in
thermal resistance, so that the
thermal resistance of the prepared thermal-insulating membrane is improved; finally by using the high-temperature
adhesive,the wiring harness shell and the thermal-insulating membrane can be well adhered, and due to a
water cooling mode, the
toughness of the thermal-insulating membrane can be ensured.