ngā purongo

Ko te kaihopu hanga kiriata te wāhanga matua o te muka karāhe e uru ana, ko te tikanga e 2% ki te 15% o te wāhanga papatipu o te tauira whakauru, ko tana mahi he here i te muka karāhe ki roto i ngā paihere, i roto i te hanga tiaki o ngā muka, kia pai ai te pakari o ngā paihere muka, kia tutuki ai ngā whakaritenga tukanga e whai ake nei i roto i ngā hua muka karāhe. Ko ngā kaihopu hanga kiriata e whakamahia whānuitia ana i roto i ngā hanganga whakauru muka karāhe ko ngā polymer, tae atu ki ngā kapia epoxy, polyurethane, polyester, phenolic resins, polypropylene dispersions whakarerekētia, ngā emulsions rānei. Ko te mahi a ngā kaihopu hanga kiriata e whakawhirinaki ana ki te hanganga ngota ngota me te taumaha ngota ngota o te polymer. Mō te kaihopu hanga kiriata kotahi, ko te pakari omuka karāheka taea te whakahaere e te taumaha ngota o te kaihopu hanga kiriata, ā, ko te kaihopu hanga kiriata he taumaha ngota teitei ka nui ake te pakari o te muka karāhe, he mea e tika ana mō te maimoatanga mata ongā hua muka karāhe tapatapahi kirihou whakapakari, ko te mea hanga kiriata he iti ake te taumaha ngota e pai ana mō te hanga miro e whakamahia ana i roto i te takai me te kukume. Kei roto i ngā pūmua kapia epoxy ngā rōpū hydroxyl aliphatic, ether, me te epoxy, ā, he kaha te kukume matū i waenga i ngā rōpū polar i roto i ngā kaihanga kiriata epoxy, nō reira he pai te piri me te pānga paihere ki ngā muka karāhe;

Hei tāpiritanga, ka taea e te rōpū epoxy i roto i te kaihoko hanga kiriata epoxy te tauhohe ki te rōpū hydroxyl whakamutunga, te rōpū carboxyl whakamutunga, te rōpū amino whakamutunga, me ētahi atu rōpū hohe i roto i ngā kirihou hangarau pēnei i te PBT, PET, PA, PC, me ētahi atu, hei whakapai ake i te kaha hononga ā-kanohi i waenga i te muka karāhe me te kapia. Kei roto i ngā kaihoko hanga kiriata polyester he maha ngā rōpū ester, ngā here matū kore-mākū, me ngā rōpū hydrophilic i roto i te mekameka matua, ā, ko tā rātou mahi e whakawhirinaki ana ki te momo waikawa me te waipiro e whakamahia ana i roto i te hanganga o te polyester me te ōwehenga. Ina he kapia polyester kore-mākū te kapia turanga, ka taea e ngā here takirua kore-mākū i roto i te kaihoko hanga kiriata polyester te polymerize me te whakawhiti-hono ki ngā here takirua i roto i te kapia turanga hei hanga i tētahi here matū kaha, i tētahi hononga ā-tinana rānei, e whakapai ake ana i te kaha hononga ā-kanohi. He pai rawa ngā āhuatanga makuku me te uru o ngā kaihoko hanga kiriata polyester, nō reira ka whakamahia hei kaihoko makuku i roto i te pultrusion, te takai, te rehu, te chevron, me ētahi atu hua. Kei roto i te mekameka ngota ngota polyurethane he hanganga carbamate tukurua, nā te noho o ēnei rōpū polar ka pai te here o te muka karāhe ki te polyurethane, he tino ngāwari te whakakotahitanga o ngā wāhanga ngota ngota ngota ngota me te ātete ki te pakaru, i te wa ano, ka taea te whakauru i te polyurethane i roto i te rōpū isocyanate me te kaihoko hononga amino me te kapia matrix ki te tauhohenga matū, hei whakatairanga i te hononga ā-mata, hei whakapai ake i te mahi ongā rauemi whakahiatongā hua.