Low-temperature-resistant stress-cracking-resistant flame-retardant PC material and preparation method thereof

The invention relates to the technical field of flame-retardant materials, in particular to an ultralow-temperature-resistant, stress-cracking-resistant and flame-retardant PC (polycarbonate) material and a preparation method thereof, and the ultralow-temperature-resistant, stress-cracking-resistant and flame-retardant PC material comprises the following components: PC, LCP (liquid crystal polymer), a low-temperature-resistant flame retardant, an anti-dripping agent, a low-temperature-resistant flexibilizer, an antioxidant, an anti-UV (ultraviolet) agent and a lubricant. The flame-retardant PC material provided by the invention is simple in preparation method, and the low-temperature impact resistance, stress cracking resistance, temperature resistance, electrical property and flame retardance of PC are improved by adding the LCP material; by adopting the auxiliaries of the compound system, the addition amount of the auxiliaries can be reduced, and meanwhile the mechanical property of the product is improved;