Te tātaritanga o te ahuatanga whanaketanga o te ahumahi PVC (polyvinyl chloride) o Haina i te tau 2021, ka pumau te kaha o te whakaputa.

Te tātaritanga o te ahuatanga whanaketanga o te ahumahi PVC (polyvinyl chloride) o Haina i te tau 2021, ka pumau te kaha o te whakaputa.

1. He tirohanga mo te whanaketanga o te ahumahi PVC

Ko te Polyvinyl chloride (PVC) he polymer i hangaia e te polymerization o te vinyl chloride monomer (VCM) i roto i nga kaiwhakangungu penei i te peroxides me te azo pūhui, i raro ranei i te mahi o te marama me te wera e ai ki te tikanga o te polymerization radical free.kāwai nui.

Ko nga kapia polyvinyl chloride te nuinga ka wehewehea ki nga kapia whai tikanga me te whakapiri i nga kapia i runga i o raatau whakamahinga: ko nga kapia-whanui (G resins) he kapia e konatunatua ana ki te maha o nga kirihou, taapiri ranei hei hanga i nga paura maroke, maku ranei mo te tukatuka;Ko nga kapia whakapiri (P Resin) he mea hanga ki te kapia hei hanga i te kapia whakapiri hei whakamahi;kei reira ano he kapia whakakotahi PVC, he kapia PVC hei whakakapi i tetahi waahanga o te kapia whakapiri ma te whakakotahi i te wa e hanga ana i te PVC plastisol.

Te whakarōpūtanga matua o te PVC resin

Ko nga tikanga hanga matua o te kapia PVC ko te tikanga whakatārewatanga, te tikanga nuinga, te tikanga whakaehunga, te tikanga otinga me te tikanga polymerization moroiti-whakarewa.Mai i te tirohanga o te ao, ko te tikanga whakatārewatanga ko te tikanga whakangao nui o te kapia kaupapa-whanui PVC, ko nga tikanga hanga o te kapia whakapiri PVC he tikanga whakaehunga me te tikanga polymerization moroiti-whakarewa.Na te rereke o nga mahi whakaputa, kaore e taea te huri i te kaha o te hanga o nga kapia e rua ki a raatau ano.

2. Te mekameka ahumahi o te ahumahi PVC

Ko te tikanga hanga PVC ko te "tikanga konupora carbide" me te "tikanga ethylene", a ko ona rawa he waro me te hinu hinu.Ko te nuinga o nga whenua o te ao e whakamahi ana i te ara hinu me te hau.Na te mea he rawakore a Haina ki te hinu me te nui o te waro, ko te tikanga whakangao PVC o taku whenua kei runga i te tikanga calcium carbide.

Ko te mekameka ahumahi PVC

Ko te rauemi mata mo te hanga PVC ma te tikanga konupūmā carbide he waro.Mai i te tau 2012, kua kitea te hekenga tuatahi o te waro o taku whenua ka piki ake.E ai ki te National Bureau of Statistics, ka eke ki te 4.13 piriona taranata a te motu i te tau 2021, he pikinga 228 miriona tana ki te 2020.

Ko te rauemi mata mo te hanga PVC ma te tikanga ethylene ko te hinu hinu.E ai ki te National Bureau of Statistics, ka whakaputahia e toku whenua te 198.98 miriona taranata hinu i te tau 2021, he pikinga e 4.06 miriona taranata ka whakaritea ki te 2020. I roto ia ratou, 16.47 miriona taranata hinu i mahia i te marama o Hakihea, kotahi tau ki runga- tau piki o 1.7%.