Modified CPVC pipe and preparation method thereof

The invention discloses a modified CPVC (chlorinated polyvinyl chloride) pipe and a preparation method thereof. The CPVC pipe comprises the following raw materials: CPVC, an anti-impact reinforcing agent, a lubricant, a flexibilizer, a stabilizer and a titanium dioxide catalyst. The anti-impact reinforcing agent is prepared from the following raw materials: modified carbon fibers, a surfactant and nitrile rubber; the lubricant is prepared from the following raw materials: flaky graphite and polyethylene wax. The modified CPVC pipe has the beneficial effects that the fluidity, impact resistance and temperature resistance of the modified CPVC pipe are superior to those of CPVC pipes in the market. The pipe outer diameter of the pipe can reach 550mm, and when the pipe outer diameter is 315mm, the performance is still kept stable. The modified CPVC pipe can resist the temperature between 100 DEG C and 110 DEG C, the temperature resistance stability is good, and the temperature resistance of a pipe product is high