He pūmua kirihou wera ngā kapia polypropylene (PP), arā, ka taea te hanga mā te wera me te whakarewa anō me te kore e ngaro ō rātou āhuatanga taketake. He rerekē ngā kirihou wera i ngā huinga wera, ka huri tonu i muri i te whakapakeketanga. Nā tēnei take, ka taea te hangarua i ngā kirihou wera. Ko ētahi atu kirihou wera ko te polyethylene, te polyvinyl chloride, te polystyrene, te polycarbonate, te acrylic, te acrylonitrile butadiene styrene, te nairon, me te polytetrafluoroethylene.
Ko ngā kapia polypropylene he maha ngā wā he mātotoru, he iti te matotoru, ā, he tino pai ngā āhuatanga hanga wera me te whakakoi werohanga. Ki te whakatauritea ki ētahi atu polymers, he whāiti te awhe pāmahana o te rauemi, ka pakarukaru i raro i te -20°C, ā, kāore e taea te whakamahi i ngā pāmahana neke atu i te 120°C. Ko te nuinga o te wā ka whakataetae ki te polyethylene, ā, ka taea te hanga kia mārama mō ngā taonga pēnei i ngā kete mārama, engari ko te polyethylene ka taea anake te hanga kia mārama, pēnei i roto i ngā ipu miraka, hei tauira. Kāore e taea e te polypropylene te rite ki te māramatanga whatu o ngā polymers pēnei i te polycarbonate engari he tino pai tana mahi.
Ko ngā homopolymer polypropylene me ngā copolymer polypropylene te nuinga o ngā hanganga polypropylene i ēnei rā. Ko te homopolymer te momo whakamahinga whānui, he monomer propylene kotahi, ā, he āhua haurua-kiriata. He maha ngā momo copolymer e wātea ana, ā, ki te whakatauritea ki te homopolymer, he ngawari ake, he ātete pai ake ki te pānga, he roa ake te mau me te pakari, he kaha ake i te pāmahana iti, me te ātete pai ake ki te pakaru. Ko te momo whakamahinga whānui te mea e taunakitia ana mō te pa ki te kai me ngā tono e nui ana te pakari. Ko ētahi ranunga o ngā co- me ngā homopolymer ka hua ake he rauemi he kaha pānga teitei (PP impact copolymer); i konatunatua rānei ki te ethylene me te butane, he āhuatanga hiri kiriata pai ake (PP terpolymer); i whakapai ake rānei i ngā āhuatanga miihini pēnei i te kaha rewa me te toronga (PP HMS). Kei te wātea te polypropylene hei pahuka pūtau-katia (EPP) kua whakawhānuihia, he iti te kiato.
Nā te iti o te pāmahana whakamahana o te polypropylene, he uaua ki te mīhini, ā, he iti noa iho ngā mahi kua oti hei whakaputa i ngā miro e tika ana mō te tānga 3D. Heoi, nā te iti o te matotoru i ngā pāmahana rewa, he pai mō ngā mahi whakaputa me te whakapūkara, tae atu ki te whakapūkara pupuhi, te whakapūkara kōpeketanga, me te whakapūkara rotomolding, hei tauira.
He rerekē te polypropylene i te nuinga o ngā kirihou wera, kāore e mimiti wawe i te makuku, ā, i raro i ngā āhuatanga noa ka taea te hanga me te kore e tukuna ki te huringa whakamaroke tuatahi.
| Tātarihia te kaupapa |
whaihua taupū |
hua |
whakamātau tikanga |
|
Āhua porotaka Ngā matūriki tae, takitahi/kg Ngā witi nui me ngā witi iti, g/kg |
≤10 ≤10 |
0 0 |
SH/T 1541-2006 |
|
Te tere rere o te papatipu rewa (2.16kg),g/ 10min |
25-35 | 27 | Q/SY DS 0513 |
| Te ahotea totoro-tuku, MP a | ≥21.0 | 23.5 | Q/SY DS 0515 |
| Te nekehanga piko, GPa | ≥1.0 | 1.401 | Q/SY DS 0516 |
| Te Kaha Pānga Izod o te 23 ℃, J/m | ≥80 | 117 | Q/SY DS 0517 |
| Kaha Pānga Izod-20℃,J/m |
tūturu ngā kai-ine |
75.5 | Q/SY DS 0517 |
| Taupū kōwhai | ≤4.0 | -4.6 | Q/SY DS 0514 |
| Pungarehu witi,% |
tūturu ine |
0.0281 | GB / T 9345.1-2008 |
Ka taea te wehewehe i te whakamahinga matua o te propylene ki ngā wāhanga e rima: te whakakoi werohanga PP, te tuhi PP, te muka PP, te kiriata PP, me te paipa PP.
1. Te whakakoi werohanga PP
Ko te kirihou PP e whakamahia nuitia ana i roto i ngā taputapu iti o te whare, ngā taonga takaro, ngā mīhini horoi, ngā wāhanga motuka me ērā atu.
2. Te tuhi waea PP
Ko te waea polypropylene te nuinga e whakamahia ana i roto i ngā hua whatu kirihou, ā, ko ngā putea ipu, ngā putea whatu, ngā putea kai me ngā putea mārama he rauemi tuhi waea PP i ia rā.
3. Kiriata PP
Ko te kiriata polypropylene e wehea ana ki te kiriata BOPP, te kiriata CPP, te kiriata IPP, ko te kiriata PP te mea e whakamahia ana i roto i ngā takai kai.
4. muka PP
Ko te muka polypropylene he momo muka i hangaia mai i te polypropylene mā te miro rewa. E whakamahia ana i roto i ngā mahi whakapaipai, kākahu me ētahi atu mara, mai i te whakatinanatanga o te kaupapa here tamariki-rua i te tau 2011, ka piki haere ngā tauera mākū, ngā nāpi me ētahi atu hua mō ngā whaea me ngā pēpi, ā, ka iti haere te tuku rauemi muka ā-whare.
5. Paipa PP
Nā te kore-paitini me te ātete ki te pāmahana teitei o te polypropylene, ko te rauemi paipa PP te nuinga o te wā e whakamahia ana mō te tuku wai me te pūnaha whakamahana. Ki te whakaritea ki te paipa PE, he mama te taumaha o te paipa PP, he watea te kawe, he pai ake te mahi tiaki taiao, ā, ka taea te hangarua.
Kei roto i ngā pēke kirihou 25kg te taumaha o te tākai, ka taea te kawe mā te tereina, mā te moana rānei, ā, ka taea te penapena ki roto i tētahi whare putunga maroke.
Manatārua © Zhongtai Kawemai & Kaweake Co., Ltd Nga Motika Katoa
