E rua ngā whakamahinga matua o ngā muka polypropylene i roto i te raima:
1) Ārai i ngā kapiti mimiti kirihou i roto i te raima.
I te wā e whakatōngia ana, e whakapakeketia ana rānei te raima, ka taea e te ngaronga o te wai o te mata te arahi ki te mimiti kirihou me ngā pakaru. Mā te tāpiri i ngā muka polypropylene ki te raima ka ārai i ēnei pakaru. Nā te iti o te modulus elastic o ngā muka polypropylene ki te whakataurite ki te raima whakapakeketia, he iti noa te whakapainga o te ātete pakaru (te pakaru i puta mai i te ahotea pāmahana, i te kawenga miihini rānei) o te raima whakapakeketia, ā, kāore i te nui te whakapainga o te kaha kume me te piko, ā, he pai ake te pakari o te raima.
2) Whakapai ake i te ātete ahi o te raima whakapakeke. I raro i te pānga o te pāmahana teitei, ka whakangawaritia ngā muka polypropylene ka tahuna, ka hanga he maha ngā pūwero i roto i te raima. Ka taea te tuku i te wai e mimitihia ana e te pāmahana teitei i roto i te raima mā roto i ēnei pūwero, ka ārai i te hanganga o te pēhanga teitei o roto nā te mimiti wai, ka pakaru ai te raima, ā, ka tino whakapai ake i te wā ātete ahi me te kounga o te raima.
Ka taea te wehewehe i ngā muka polypropylene ki ngā muka roa, ngā muka poto, ngā papanga kore-whatu spunbond, ngā papanga kore-whatu rewa-puhia, me ētahi atu.
(1) Mama
Ko te matotoru o te muka polypropylene he 0.90-0.92 g/cm, koinei te mea tino māmā o ngā muka matū katoa, he 20% te māmā ake i te nairona, he 30% te māmā ake i te polyester, ā, he 40% te māmā ake i ngā muka viscose. Nō reira, he tino pai mō te whakamahi hei whakakī mō ngā kākahu hotoke, hei papanga rānei mō te retihuka, te piki maunga, me ētahi atu kākahu.
(2) He kaha teitei, he ngāwari pai, he ātete ki te kakahu, me te ātete ki te waikura
He kaha nui te polypropylene (he rite tonu i ngā āhuatanga maroke me te mākū) ā, he rauemi pai mō te hanga kupenga hī ika me ngā taura; he pai te ātete ki te kakahu me te manawanui, he rite te kaha ki te polyester me te nairon, me te tere whakahokinga rite ki te nairon me te huruhuru hipi, he nui ake i ngā muka polyester me te viscose; he ngoikore te pumau o te āhua o te polypropylene, he ngāwari ki te pakaru me te whakarerekē, he ātete ki ngā moroiti, ā, kāore e kino; he pai ake te ātete matū i ngā muka noa.
(3) He āhuatanga ārai hiko me te pupuri i te mahana
He nui te ātete hiko o te muka polypropylene (7 × 10 Ω. cm) ā, he iti hoki te kawe wera. Ki te whakatauritea ki ētahi atu muka matū, he pai rawa te ārai hiko me te pupuri mahana o te muka polypropylene, engari he ngāwari ki te whakaputa hiko pateko i te wā e tukatukahia ana.
(4) He ngoikore te ātete ki te wera me te koroheketanga
He iti te ira rewa o ngā muka polypropylene (165-173 ℃) ā, he iti te pumau ki te mārama me te wera. Nō reira, he iti te ātete wera o ngā muka polypropylene, he ātete koroheketanga, ā, kāore e ātete ki te rino. Heoi, ka taea te whakapai ake i te āhuatanga ārai-koroheketanga mā te tāpiri i te kaihoko ārai-koroheketanga i te wā e miro ana.
(5) Ngā āhuatanga mimiti makuku me te tae ngoikore
Ko ngā āhuatanga mimiti makuku me te tae o ngā muka polypropylene te mea kino rawa atu i roto i ngā muka matū, tata kore rawa he mimiti makuku, ā, ko te tere whakahoki makuku he iti iho i te 0.03%. He kaha te pānga mimiti o te matua o te polypropylene pai rawa, ā, ka taea te tango i te mamaoa wai mā roto i ngā uaua o roto i ngā muka. I muri i te hanga hei kākahu, ka pai ake te whakamarie o ngā kākahu, inā koa me ngā muka polypropylene tino pai rawa. Nā te nui haere o te mata, ka tere ake te tuku o te werawera, ka noho whakamarie te kiri. Nā te kore mimiti makuku me te iti o te tere mimiti o ngā muka, he ngāwari te horoi me te tere maroke o ngā kakahu polypropylene.
He ngoikore ngā āhuatanga tae o te polypropylene, he mārama ngā tae, ā, he ngoikore te pumau o te tae. Kāore e taea e ngā wahie noa te tae, ā, ko te nuinga o ngā muka polypropylene kua taehia ka puta mai i te tae i mua i te miro. Ka taea te whakamahi i te tae o ngā rauemi mata me te whakarerekētanga o ngā muka, ā, ka taea te whakaranu i ngā matū whakakoi wahie i mua i te miro rewa.