He pūhui kirihou wera ngā kapia polyethylene (PE), arā, ka taea te hanga mā te wera me te rewa 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.
E toru ngā rōpū matua o ngā kapia polyethylene: te kiato iti (LDPE), te kiato teitei (HDPE), me te taumaha ngota tino teitei (UHMW-PE). Hei tauira, ka whakamahia te LDPE mō te hanga putea hokohoko kirihou; HDPE, mō ngā paipa waikeri; me te UHMW-PE mō ngā taputapu hauora. I te nuinga o te wā, ko te nui ake o te kiato o te rauemi, ko te nui ake o tōna hanganga tioata. He teitei ake ngā pāmahana ratonga o ngā hanganga tioata teitei ake.
Ko te LDPE te mea pai rawa atu mō te whakaahuatanga he iti te kaha engari he tino ngāwari te tango, ā, ka taea te totoro me te kore e whati. He rongonui mō ngā momo mahi tākai mai i ngā pounamu pēhi ki te kiriata hiri. He kaha ake te HDPE engari he iti ake te ngāwari, ā, he mea whai hua mō ngā hua me mau tonu tō rātou āhua pērā i ngā ipu para. Ka taea tonu te whakamahi i te HDPE i te -60°C. He tino kaha te UHMW-PE, me ngā ōwehenga kaha-ki-taumaha e tata ana ki ētahi maitai. He ātete teitei ki te pakū, he pai mō ngā mahi motuhake pērā i ngā tīwiri wā me ngā wira whetu o ngā mīhini pounamu, ngā papa kakahu o ngā hononga horihori, me ētahi atu.
Pērā i te nuinga o ngā kirihou wera, ka mimiti tere ngā kapia polyethylene i te makuku. Kāore e hiahiatia he tikanga whakamaroke motuhake i mua i te werohanga, i ētahi atu tukatuka rānei.
He mā, he mangu rānei te nuinga o te rauemi i tōna āhua tūturu, ā, ka mārama haere ina whakaangahia kia rite ki ngā rahi o ngā pounamu miraka me ērā atu mea. Ka taea e ngā kaiwhakarato te whakarerekē i te hanganga hei whakanui ake i te kaha haehae, te mārama, te ngāwari ki te hanga, te ngāwari ki te tā, me ērā atu mea, kia rite ki te tono e hiahiatia ana.
| Kaupapa Tātari | Tātai Kounga | Hua whakamātautau | Tikanga whakamātautau |
|
Āhua porotaka Ngā pata tae me ngā pata ira pango/k |
≤10 | 0 | SH/T 1541.1-2019 |
| nui me te iti, karamu/kg | ≤100 | 0 | SH/T 1541.1-2019 |
| Te tere rere o te papatipu rewa (21.6kg), karamu/10min | 4.8-7.2 | 6.1 | Q/SY DS 0511 |
| Kiato, kg/m3 | 946-950 | 948.9 | Q/SY DS 0510 |
| Te ahotea hua kume, MPa | ≥22 | 24.9 | Q/SY DS 0512 |
| Te ahotea kume i te whati, MPa | ≥24 | 42.2 | Q/SY DS 0512 |
| Te taumahatanga kume i te whati, % | ≥450 | 775 | Q/SY DS 0512 |
Ka taea te tukatuka i te polyethylene mā te pupuhi, te whakaputa, te werohanga me ētahi atu tikanga, e whakamahia whānuitia ana i roto i te hanga kiriata angiangi, ngā hua tuwhera, ngā muka me ngā mea e hiahiatia ana i ia rā. Me ērā atu anō.
(1) He whānuitia te whakamahinga o te kiriata polyethylene (PE) hei rauemi takai mō ngā momo kai, rongoā, tongi matū, hua ahumahi me te kiriata ahuwhenua. Ka taea hoki te whakaputa hei kiriata hiato mō te tākai i ngā mea taumaha.
(2) ngā hua polyethylene kōhao: he kaha ake te polyethylene kiato teitei, he pai mō ngā hua kōhao. Ka taea te pupuhi ki roto i ngā pounamu, ngā oko, ngā kēne, ngā tāke me ētahi atu ipu. Mā te maka rānei ki roto i te tāke, te tāke rokiroki me ētahi atu ipu nui.
(3) he pai ngā paipa me ngā pereti polyethylene mō te whakatakoto i raro i te whenua, te tēpu me ngā rauemi hanga whare
(4) muka polyethylene: ka taea te whakamahi hei koti ārai matā. He rauemi hiato mō ngā mahi motuka me te moana.
(5) muka polyethylene hei hanga hiraka huruhuru, hiraka papatahi, muka kiriata rānei, hei hanga taura, kakahu tātari, kakahu takai me ētahi atu.
(6) Ngā momo hanga polyethylene: Ko ngā momo hanga e hangaia ana e te werohanga whakarewa ko ngā momo hanga o ia rā, ngā putiputi horihori, ngā pouaka hurihuri, ngā ipu iti, ngā wāhanga pahikara me te tarakihana, e whakamahia ana i roto i te hanga wāhanga hanganga.
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
