Polyamide Synthetic Materials for Thermal Break Strips | PA66 Solutions

Polyamide synthetic polymers, uas muaj chaw tham khao tias Nylon, yog qhov chaw nyob ze ntawm thermoplastics siv zoo uas muaj caij nyoog amide (-CO-NH-) nyob rau hauv qhov chaw molecular. Qhov caij nyoog amide no yog qhov tshwm sim kev sib txuas hydrogen zoo li cas, uas tso cai rau cov leej cipher zoo li zog meej, siab, thiab lub teb nruab nrab siab dua. Ob qho chaw siv tseem ceeb tshaj plaws yog Polyamide 6 (Nylon 6), uas tsim los ntawm kev pib polymerization ntawm caprolactam, thiab Polyamide 66 (Nylon 66), uas tsim los ntawm kev polycondensation ntawm hexamethylenediamine thiab adipic acid. Cov leej cipher hlo tshiab pom qhia tus naj npawb ntawm cov carbon atom nyob rau hauv cov diamines thiab dibasic acids. Qhov txwv tsis zoo no tso cai rau PA66 muaj teb nruab nrab siab dua thiab zoo dua, thaum PA6 feem ntau muaj zog tiv thaiv thiab yooj yim dua. Ntawm no, cov ntxiv tshaj tshua muaj paub tseem ceeb yog PA 11 thiab PA 12 (los ntawm castor oil uas tuaj yeem rov sau ua dua), uas paub tias muaj kev yooj yim thiab kev dhau hlau tsawg, thiab semi-aromatic polyamides (PPA) uas muaj kev tiv thaiv thiab kev tiv thaiv ntau dua. Cov leej cipher pheej yig ntawm tag nrhol polyamides yog muaj kev tiv thaiv zoo tsha, muaj kev tiv thaiv zoo txaus rau hydrocarbons thiab oils, thiab muaj coefficient friction tsuag. Qhov tshwj xeeb tshaj plaws yog lawv qhov nature hygroscopic; lawv dhau hlau los ntawm av, uas ua raws li plasticizer, nce zog thiab zog tiv thaiv, tab sis suav zog thiab kev nyab xeeb. Qhov sensitivity moisture no cuam tshuam kev saib xyuas ua vor ua ntej melt processing. Lawv kev tsim thiab cov leej cipher yooj yim tau ua rau polyamides tsis tuaj yeem khiav mus rau ntau yam kev siv, los ntawm fibers thiab textiles mus rau engineering components nyob rau hauv automotive, electronics, thiab consumer goods.