Ngā mea whakaū waikurame ngā āpiha ārai-waikura he tāpiri matū tino nui e rua i roto i ngā mahi ahumahi e āwhina ana ki te ārai i ngā pānga o te waikura. Ko te waikura he tauhohenga matū e puta ana ina pakaru te hononga matū e te wai, ka pakaru ai tētahi rauemi. Ka tino kino pea tēnei tauhohenga ki ngā rauemi e whakamahia ana i roto i ngā mahi ahumahi, tae atu ki ngā kirihou, ngā paninga, me ngā piripiri, ka heke te kaha, ka pakarukaru, ka ngaro te ngāwari i roto i te wā.

Ko ngā mea whakaū waikura he tāpiri matū e tāpirihia ana ki ngā rauemi i te wā e hangaia ana hei ārai, hei whakaroa rānei i te tukanga waikura. Ka āwhina ēnei mea whakaū ki te tiaki i ngā rauemi mai i ngā pānga kino o te makuku me te whakanui ake i tō rātou pakari me te roa o te ora. I tētahi atu taha, ko ngā mea ārai-waikura he tāpiri matū kua hangaia hei tauhohe ki ngā hua o te waikura me te ārai i te pakaru atu o te rauemi.

Te whakamahinga ongā mea whakaū waikuraā, kua noho hei mea nui ngā kaihoko ārai-waikura i roto i te tukanga hanga ahumahi. Ki te kore ēnei tāpiringa matū, he poto ake te roa o te ora o ngā rauemi e whakamahia ana i roto i ngā tono ahumahi, ā, me whakakapi pinepine.

I ngā tau tata nei, kua tino piki ake te hiahia mō ēnei tāpiringa matū nā te tipu haere o ngā ahumahi hanga, motuka, me te takai. He nui te whakawhirinaki o ēnei ahumahi ki ngā rauemi e ātete ana ki te waikura, nā te mea he mea nui te pānga ki te makuku i roto i ngā mahi maha.

Ko tētahi o ngā āhuatanga e whai wāhi ana ki te pikinga ake o te hiahia mō ngā mea whakaū i te waikura me ngā mea ārai-waikura ko te whānui haere o te whakamahinga o ngā rauemi whakahou pēnei i ngā hinu tipu me ngā pūmua pirau-koiora i roto i ngā tono ahumahi. Ka tino pāngia ēnei rauemi e te waikura, ka ngaro te kaha me te roa o te wā. Mā te whakamahi i ngā mea whakaū i te waikura me ngā mea ārai-waikura i roto i te tukanga whakaputa, ka taea te whakaroa ake i tōna roanga ora, ka nui ake te whai hua me te uara.

Whakapūmau waioramō ngā pūmua kei roto ngā rōpū ester me te amide, ngā hinu whakahinuhinu he wai anorganic. He tino kaha i ngā pāmahana tukatuka teitei ake.WHAKAŪ DB7000He mea tango waikawa me te wai, ā, he mea ārai i te pirau autocatalytic. Ko ngā mara matua o te tono ko te whakau i ngā polyesters (tae atu ki te PET, PBT me te PEEE) me te maha o ngā pūnaha polyurethane e hangai ana ki ngā polyols polyester me ngā polyamides, EVA me ētahi atu kirihou e ngawari ana ki te hydrolysis.