Formula of Antibacterial and Cold Resistant PVC Shower Hoses
Through the compounding action of adipate polyester and powdered nitrile rubber(PNBR),the problems of PVC plasticizer migration and low-temperature hardening of hoses are improved.At the same time,the antibacterial agent polyhexamethylene biguanidine hydrochloride(PHMG)is bonded to the molecular chain of PVC in the form of chemical bond under the action of the cross-linking agent bi-tert-butyl peroxyisopropyl benzene(BIPB),so that the material has a long-term antibacterial function and is made into an antibacterial and cold-resistant PVC material,The PVC composite hoses were successfully trial-produced.After exploring the most suitable formula and process,the test results showed that the antibacterial rate of the PVC shower hoses produced by this formula against Staphylococcus aureus and Escherichia coli was more than 99.5%,not less than 98%after aging tests;At 0℃,its Shore hardness is 9A lower than that of phthalate plasticizer(DOP),and its tensile strength is 2.9 MPa higher than that of low-molecular cold-resistant plasticizer(DOA).
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