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Plastic corrugated pipe mainly has these three materials: PE (polyethylene), PP (polypropylene) and PA (nylon), which can meet the high temperature requirement of 150 ° C, there are two materials: PP and PA. The following mainly introduces these The material difference and application selection of the two high temperature resistant bellows.

The material of PP bellows is polypropylene, and the material of PA bellows is nylon 6. Polypropylene is a colorless, odorless, non-toxic, translucent solid substance. It is a thermoplastic synthetic resin with excellent performance, and it is a colorless and translucent thermoplastic lightweight general-purpose plastic. It has chemical resistance, heat resistance, electrical insulation, high strength mechanical properties and good high wear resistance processing performance. The Chinese name of PA is polyamide, which is the general term for thermoplastic resins containing repeated amide groups—[NHCO]—on the main molecular chain. It has high crystallinity and obvious melting point; high surface hardness, wear resistance, small friction coefficient, self-lubrication and noise reduction. Non-toxic, odorless, non-mildew, self-extinguishing, weather resistance

Good, but poor dyeability. The bellows is made of nylon 6, which has the most superior comprehensive properties, including mechanical strength, stiffness, toughness, mechanical shock absorption and wear resistance, plus good electrical insulation and chemical resistance. Both PP bellows and PA bellows have the following characteristics: halogen-free, high temperature resistance of 150°C, UV resistance, friction resistance, acid resistance, alkali resistance, lubricating oil, inorganic salt, etc., and good flexibility. So how to choose it in use?

First of all, in terms of temperature resistance, PA bellows can withstand a high temperature of 175°C for a short time, and it is better than PP bellows in terms of high temperature resistance. In terms of physical properties, polypropylene is lighter than nylon 6, and the product has a good surface gloss and is easy to color. Therefore, if you want more choices of beautiful colors and higher weight requirements, you can choose PP bellows. In terms of mechanical properties, the most prominent performance of PP bellows is the resistance to bending fatigue. Simply put, it is more appropriate to choose PP bellows for the protection of frequently moving mechanical harnesses. In terms of chemical stability, PP bellows are suitable for wire harness protection of chemical machinery, and have good anti-corrosion effect. In terms of electrical performance, PP corrugated pipe hardly absorbs water, so the insulation performance is not affected by humidity, and it has good voltage and arc resistance, but it has high static electricity and is easy to age when in contact with copper. In terms of weather resistance, polypropylene is more sensitive to ultraviolet rays. Therefore, in terms of UV resistance when used outdoors, PA corrugated pipes are more suitable than PP corrugated pipes. In terms of price, the cost of PP corrugated pipe is lower, and customers who are sensitive to price will give priority to it.