Umatshini, umbane, i-thermal kunye neekhemizi zekhemikhali ze-Polyamide (PA)

I-Polyamide (PA) i-molecular ephezulu yemolekyuli esuka kwi-lactam, i-fatboxylic acid, i-amine ene-amine, okanye i-aminec acid, ene-amine ye-amine, inamaqela aphezulu. Polyamide is tough angular semi-transparent or milky white crystalline resin, as an engineering plastic polyamide's relative molecular mass is generally (1.5-3) × 104. Polyamide has high mechanical strength, high softening point, heat resistance, low friction factor, abrasion resistance . iscuties elungileyo. Ukuba nenxaxheba enqabileyo, imibala engalunganga. Ukungancedi kakuhle kukuba ukufakwa kwamanzi kuyinto enkulu, kuchaphazela izithixo zozinza kunye neepropathi zombane. Ukuqiniswa kwefayibha kunokunciphisa ukufunxa kwamanzi kwe-resin, ukuze isebenze kwiqondo lobushushu ephezulu kunye neemeko eziphakamileyo zokufuma.

1. Iipropathi ze-polyamaides ezisetyenziswayo

Iintlobo ezahlukeneyo ze-PA6, i-PA66, i-PA1113, i-PA610, i-PA6111, i-PA6T ye-Polyinacide ye-Polyine, i-PA6, i-PA6T yeyona ndawo inkulu kakhulu, inika ingxelo ngaphezulu kwe-90 % yemveliso ye-polyamide. Isakhiwo sekhemikhali see-polyamides ezahlukeneyo zahlukile, kwaye iipropathi zabo ziyahlukile. Itheyibhile ye-1-1 Lawula iipropathi zezinye eziqhelekileyo ezisetyenziswayo.

Iipropathi ze-polyamides eqhelekileyo

Iipropathi ze-2.Mthembisical

I-Polyamide Choin i-molecular iqungquthela amaqela e-Plar Amide, inokwenza i-hydrogen ye-hydrogen ye-hydrogen, i-crystalliety, amandla phakathi kwe-molecular thein inamandla amakhulu kunye nemodyuli. Ngokunyuka kwe-amil verity yeqela, i-molecular chain symmetry kunye ne-crystallies, amandla ayo ayonyuka; Ngokwanda kweqela le-methyl kwi-Polyamide ye-Polyamide Chain, amandla omatshini uyancipha, ngelixa amandla empembelelo enyuka ngokuthe ngcembe. Ukuqaliswa kwamaqela e-Aryl ukuya kwisakhiwo se-volyamide ye-molecular sakhiwo ngenxa yokwanda kwamandla e-phring kunye nokunyuka kwamandla (umz. IVer der imikhosi ye-molecular. Phakathi kweebhlukhwe, i-PA66 inobunzima obuphezulu kunye nobungqola, kodwa olona lungelo lusezantsi. Zonke iintlobo ze-Polyamide ngokobungakanani obunobunzima bokulinganisa: I-PA66 <PA11 <PA1010 <PA6 <PA610. I-Polnamide I-Crystallies, inefuthe elikhulu kwiipropathi zoomatshini, amandla e-thensile, amandla aguqukayo, ukuqina kwengqondo, ukwenziwa kwe-flexolus ngokunyuka kwe-crystallies kunye nokuphucula. Iqela le-amil kwikhonkco eliphambili le-polyamide molecule yiqela le-hydrophilic, elenza ukuba i-Polyamide ibe nokuthathwa kwamanzi. Ukufunxa kwamanzi kunefuthe elihle kwiipropathi zoomatshini, emva kokufumana amanzi, amandla obuzini, ukugoba kwemveliso ye-elastity kwaye kuncipha kakhulu, ngelixa amandla empembelelo enyuka kakhulu, Jonga itheyibhile 2-1.

Iziphumo zokupheliswa kwamanzi ngamandla

3. Iipropathi zombane

I-Polllide inezinto ezilungileyo zoMbane, iTheyibhile 3-1 zidwelisa ezinye zeepropathi zombane ze-Polzamide. Nangona i-polyamide inezinto ezilungileyo zombane, iqulethe amaqela e-polar amade kwi-molekyuli kwaye yi-polymer ye-abser. Njengoko iqondo lokufumana amanzi lokunyuka, ukunyangwa kwevolumu kunye namandla e-Dollemide kuyancipha, kwenza ubunjineli obungalunganga wobunjineli obungafanelekanga ukuba busetyenziswe njengendawo ephezulu kunye nendawo emanziyo.

Iipropathi zombane zezinye ii-polyamides

4. Iipropathi ze-thermal

Indawo yokunyibilika yeentlobo ezahlukeneyo ze-Polyamide iyahluka kakhulu, eyona ndawo iphakamileyo yenyibilike yi-PA46, ukuya kuthi ga kwi-295 ℃. I-Polyamide inoluhlu olubanzi lwamaqondo obushushu asebenzayo, ngokubanzi ukusuka-40 ukuya kwi-100 ° C. Ubushushu obushenxisi be-Polyomide buxhomekeke kakhulu kumthwalo. Ubushushu obuqhelekileyo bokubetheka kwe-Polyamides buhlobene ngokubanzi nomthwalo abaphantsi, kwaye uyancipha ngokukhawuleza ngomthwalo owondayo. Izinto eziphakathi kwe-thermal ye-polyamades ezahlukeneyo azifani, njengoko kubonisiwe kwiTheyibhile 1-1. Ubushushu bokuxinana kwezibuko ezahlukeneyo ziboniswe kwiTheyibhile 4-1. Ubushushu be-chargation ye-PA6 kunye ne-PA66 iyafana, ngelixa i-PA610 iphelile kwaye i-PA11 yeyona iphezulu.

5. Iipropathi zekhemikhali

I-Polyamide isizinza kwii-regents ezininzi zekhemikhali, ngakumbi i-petroli, i-nyibiricants kunye nezinye ii-oyile, zichasene neoyile elungileyo, yi-PA11, i-PA11, i-PA11, ye-PA11, ye-PATION yeoyile ilunge kakhulu, kukhetho lokuqala lwezixhobo zemigca ye-agugu. However, it is soluble in phenol, concentrated inorganic acid and formic acid at room temperature, and in ethylene glycol, glacial acetic acid, propylene glycol, methanol solution of zinc chloride or calcium chloride, as well as fluoroacetic acid and fluoroethanol at high temperature. Ngokubanzi, uninzi lweplastiki luzinzile kwizisombululo ze-alkaline, kodwa ukonakaliswa kwe-hydrolysis okanye ukonakaliswa kwenzeka kumaqondo obushushu aphezulu, ngakumbi xa inyibilika inyibilikisiwe i-polyamide; Ngaphantsi kwale meko, i-Inorganic Acids kunye nee-Amines, ngakumbi i-molreavatent acid, inokwazisa ngokukhawuleza i-Polyamide, ingenzi i-polyomer ye-amine, ekugqibeleni ivelisa i-Polyomer ye-Pollamide. I-Polyamaides ikhupha isoyikiso se-thermal kwiqondo lobushushu ephezulu. Ukongeza kwi-thergrareation, ukonakaliswa kwe-oxidave kwenzeka xa i-polyamide ishushu emoyeni. Umzekelo, i-PA66 iba brittle emva konyango nge-250 ° C kwi-2h 2h okanye i-70 ° C iminyaka emi-2. Xa uziqhelanisa, rhoqo ekuqhubeni kweemveliso ze-polllide, yongeza i-antioxidants ukuba ithintele ukonakaliswa kwe-thermas. I-Polyamide ekukhanyeni, ngenxa ye-radiation ye-ultraviolet, iyakwenzeka nakwezoba amandla okanye ukwaluphala. I-Polyamide iqulethe iqela le-carbonyl, linokufumana ukukhanya kwe-ultraviolet ekukhanyiseni ilanga, ukuze i-Polyamide ye-Polyin Story kunye nokukhanya kwe-polyin, kwi-PA6, i-PA6, i-PA6, i-PA6, CO kunye ne-HODROCRON. I-UV Abssurs kwaye kuthintele i-Amine Shoblines zongezwa ukuphucula uzinzo lokukhanya kwezibuko.