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Styrene: Kia pehea te mōrearea, me pehea?

Styrene-ka karanga taekore taonga wai he kakara motuhake e taea meinga kino ki te hauora tangata. I tēnei wā phenylethylene, vinylbenzene me te ethylene e whakamahia whānuitia i roto i te ahumahi te nuinga i roto i te hanga o waerau me rubbers waihanga. O te akoranga, hinonga i te mahi ki enei matū kia tino mau whakatūpatotanga haumaru.

Production o styrene

Haere tenei mea i roto i ngā tautuhinga motuhake (e taea mahi matatau tae 150-300 mano taranata o hua ia tau) i te dehydrogenation. Ko te tauhohenga, i hua styrene synthesized whakarōpūtia rite pauwera me e wahi i te pāmahana o e pā ana ki 600-700 nekehanga. Ka whakamahia e tenei he whakakōkī waikura rino ki te tua o te chromium me te pāhare pāporo. tukinotia ana te ururua hua e te pūnaha maha-atamira. Ki te ofati koe te whakamahi hanga ranei o hangarau e taea puta pira styrene ki te taiao. Mō te aha te reira te tikanga he hopearaa, kōrero he iti raro. Tuatahi, kia whakamārama tatou te meka i tenei taonga, ko te me he aha ngā āhuatanga rerekē i te reira.

āhuatanga

Na, he aha te ahua o te matū - styrene? He maha ona āhuatanga. Kia whakaaro o ratou:

  • memehatanga rawa rawakore i roto i te wai;
  • hāora Light;
  • memehatanga rite i roto i ngā pūhui matū waro;
  • te kaha ki te tareka ngā te waerau;
  • polymerization ki te hanga i te puranga vitrified totoka;
  • copolymerization ki te waetahi;
  • kōnakonako rironga.

E tomo te styrene tinana tangata, ko te kakara rawa kino e kia e rua i roto i nga Airways runga, a i roto i te wahi kūnatu. I roto i te whakapā tika ki fluids kei roto i te reira, kia riro te reira i roto i te kiri.

Styrene ko Taiao

Tenei taonga ko te tino kino, me te taea whai te pā tōraro i runga i kaiao ora. Heoi, ko te styrene i roto i te rangi tere decomposes. Na reira, ara, ki te putanga kōpeka nui kino natura, e kore e taea te tono i te reira. decomposes te styrene oneone, me te manawa whenua ki ona matū wāhanga. Ko te taua mea tupu i roto i te rangi, me te i raro i te mana o te rā.

Heoi, i roto i te nuinga o āhua i te tau mōrahi o ngā matū tukuna ki te taiao e karapoti ana o te hinonga, whakaritea e te ture.

Ture mō te mahi ki te styrene

I roto i te hanga o tenei taonga, me tona whakamahinga mo te hanga o waerau, o te akoranga, kia mau haumaru. I roto i te nuinga o nga whenua o te ao whakaturia te kukū tīkina mōrahi o styrene i te ruma i roto i nei e kei kaimahi o te kamupene. I raro i nga ture o taua awheawhe e tūtohu ana ki te pīkau i ngā pūnaha ventilation pai. O te akoranga, kia waiho nga kaimahi o enei hinonga tupato kore ki folo te styrenics kohu me te whakamahi i ngā taputapu whaiaro tiaki ki te tika.

Kia mau haumaru, te ranu ki ētahi atu matū (kaiwhakakökï, peroxides, tāpiritanga) styrene. kia puta rawa tere ranei i roto i te aratau koretake te tauhohenga whakahaere ki nga tohutohu,. kia kawea styrenes huhu me te Mixing i roto i ruma motuhake hangaia mō tenei whakaaro, me te pai hā.

Polymerization o styrene puta noa i te pāmahana rūma. Ko te ati o tenei tukanga ko e taea hua i te reira i roto i te pahūtanga. Na reira, ko te taonga ki te penapena i roto i runga i te tohutohu.

styrene kino ki te tinana tangata

Whakapā ki tenei matū kia meinga te tangata rite whakapeka tauhohe paihana me mate ma'i. Tata okana katoa - whatukuhu, ate, mimi, pūnaha toto - Ka taea te pāngia e taua o matū pērā i styrene takirua. Kia pehea te kino ko tenei carcinogen hoki te tangata āta i ia o enei take i roto i te taipitopito me kōrero i raro nei. whakaaro Styrene te paihana tāoke pūnahanaha, me te pā ki te 2 piha o mōrearea. Fatal ki te tangata e taea hua i roto i te inhalation o rangi kei roto 10 000 mg / m 3 o styrene.

He aha e taea e meinga pānga whakapeka styrene

A, no te haamata i te kukū o te kohu i roto i te rangi i roto i te nui o 420 mg / m3 i roto i te tangata ki te whakaatu i nga tohu o te ritenga o te kiriuhi mucous o te wahi romahā me te kanohi. A, no te nui o te ihirangi 840 mg / m 3 whakawhanakehia whakapairuaki, me te momoe. I roto i tenei take, i te patunga he katoa o raruraru ki te taputapu vestibular.

huringa iranga

pānga Mutagenic - ano tetahi atu takeo e taea whanga i roto i mo te tangata, mo te wa roa ngongoa styrene. Kia pehea te mōrearea ko reira i roto i tenei whakaaro? Whakawa i nga pūtaiao rangahau, ko reira taea e inhalation o styrene kohu wā roa-e taea arahi ki te hua i roto i te auau o te pūira hape hanganga i roto i lymphocytes toto piringa. whakahaeretia te rangahau i runga i te kaimahi mahi i roto i te tukanga o te hanga o te terei me kirihou whakapakaritia.

Pānga i runga anō mahi

Whakamātautau kawea i roto i runga i te kiore, hanga hoki e taea taua mea ki te faaoti e kia whai styrene hau i runga i kaiao ora pānga fetotoxic. Heoi, he rangahau o nga wahine, kaimahi o hinonga mo te hanga o te styrene, kahore maumaui motuhake ratou i kore whakakitea.

pānga carcinogenic

Kua whakapumautia maha ngā rangahau e faarahi inhalation o styrene te mōrea o mate pukupuku o te hematopoietic me ngā pūnaha lymphatic o te iwi. Heoi, ka taea e tenei pānga anake puta i te wa tino roa (mō ngā tau) te rongo ki kohu o taua matū.

nohanga tīkina

Na, kua uiui e matou te nui o te kino e taea te tono ki te styrene tinana tangata. Kia pehea te kino tenei hua matū, matau koutou inaianei. O te akoranga, i roto i te hunga wāhi te wahi i reira he iwi he roa te wa, e kore me nui te kukū o te kohu taonga nga rohe whakaaetia mōrahi. I nga hinonga o ratou hanga hanga o waerau me rubbers ranei, kia roto te reira i roto i te rangi i roto i te nui o kaua e nui ake:

  • i roto i te rohe mahi - 30 g / m 3;
  • i roto i te tinana i te wai - 0.02 g / l.

Mean-neke kukū tīkina mōrahi o te taonga pērā i styrene i roto i te rangi, ko te 10 mg / m 3, te toharite - 0,002 mg / m 3, he kotahi - 0.04 mg / m 3.

Styrene i roto i ngā tākainga kai

Kia aroha mai, kia tomo tenei taonga te tinana tangata e kore anake, no te te taiao mō ngā tipu pira. Terei me acrylonitrile-butadiene-styrene, kei te whānui e whakamahia ana i te tuku tākai mo te waka me te rokiroki o kai. e mea he kia waiho ratou tino kinokore. Heoi, kitea te rangahau e taea ki te heke ki te kai i rua te ngohengohe me te pakeke i te tākai styrene waetahi ko. I roto i ētahi wā, ara he taonga e homai kai, te waiu wai ranei, he reka kino.

styrene hāngai, i te kakara rawa kino, me i te hanga o ngā tūemi whare, rauemi hanganga, me te pera i runga i. D.

kino ki te Styrofoam

Ko te wā tēnei rauemi tetahi o nga momo tino rongonui o te mātao. Ka taea e koe te hoko i te reira i roto i tetahi toa pūmārō, a kua whakamahia reira rawa whānui, tae atu i roto i te hanga o ngā whare noho. Na te whakamamaetia terei kinonga ngāwari hanehane i roto i te wā e ora katoa e 10-15%. A, no te tenei ihirangi waetahi o ngā hua whāwehe ko i te iti rawa 65%.

I tua atu, he uaua oti, me te kākahu i roto i te hanga o tenei polymerization whakamahana o styrene. Tenei te tikanga e i roto i te pire, ko te tonu tona he nui wäriu. Na reira, copolymers o styrene, i roto i tetahi take emit au paitini kikino. Ko te take i rāhuitia te whakamahi o te insulator mo mātao o whare noho kei roto i te ture, kāore, e matau ana tatou tawhiti e kore katoa. I roto i tenei take he pai tonu ki te whakamahi i ētahi atu rauemi. Heoi, kia mōhio, ka roto e styrene te i tae atu i roto i te pahuka i. Mai whakaaro te taonga kei te ki kia nui atu kino atu i formaldehyde, he tonu pai ki te ārai i te whare i te roto ki te huruhuru kohuke.

pepapātū vinyl

I te tahi taime e kore e mōhio e pā ana ki te meka i te rauemi mutunga whakamahia mo te hanga, kei styrene nga rangatira o whaitua. Kia pehea te kino tenei hua matū mō te tangata, kua kitea kua matou. Na reira, e pā ana ki kia rauemi tūmatanui me ngā tūemi whare hakari, ki te mohio tino utu reira. Hei tauira, he nui iti o te taonga i roto i roto i te pepapātū vinyl. Heoi, pērā Styrofoam, taea te whakamahi i tēnei momo o oti hoki te taiepa i roto i te wāhi noho. I raro i ngā āhuatanga noa o te styrene pepapātū kore te tohaina. Ki puta he ruma papered ki vinyl kohu, ki e tika ana ake i kore ko te pāmahana ambient iti iho i te 50 degrees.

ABS-kirihou

ABS he pānga kapia ātete whakamahia mo te hanga o ngā wāhanga automotive (mana ā-, dashboards, etc .. D.), kuhunga o taputapu whare (horoi mārua, ngā mana mamao, kawhe) me te hikohiko (PTM, te aroturuki i), taonga, paipa, kai hauora , pāhi a tae noa taonga tākaro o ngā tamariki.

I roto i te āhua tonu o tetahi mōrea ngā mō te hauora tangata, e kore e enei mea katoa reira. Styrene tīmata parakore ki te wehe i a ratou anake i raro i nga tikanga e whai ake nei:

  • He whakawera rawa kaha.
  • I roto i te rongoā, ka whakamahia ki te biomaterial.
  • I roto i te faaohiparaa i teie kirihou mō te rokiroki kai. Ngā Kāore ringihia ki ngā o taua waipiro rauemi. I roto i tenei take, ko te rite ki te whakawera i te pānga.

I tēnei wā, ko te rahi o waerau styrenic tae atu ABS, koloa katoa me te Engineering kirihou he 50%.

Aha ki te mahi i roto i te take o te paihana styrene

I roto i taua take, ki te te tangata mo te wa roa wāhi ki nohanga teitei o au paitini styrene me te mea tohu o paihana, kia mahi ia koutou enei mahi:

  • Tangohia te tangata i pangia, i te whare poke ki te horoi rangi.
  • Ki te ki te huru mauri moe ranei te tino rawakore whakamahi i te kanohi hāora.
  • Ki te tika, kia he manawa tāwhaiwhai.
  • Aroturuki te pāmahana o te tinana pāngia. e kore e nui haere te reira i ranei heke.

I styrene i runga i te kiriuhi kiri mucous ranei me nui horoi ki te wai. e kore e wa Treatment kia iti iho i te 15 meneti. I muri ia mahi e hiahiatia ana te pārurenga te ki kia tangohia ki hōhipera. Ki te ohorere whiwhi styrene roto te tinana, he mea tuatahi e tika ana o te katoa ki te inu moni rawa nui o te waiu, te wai ranei. I muri i tenei, me falemahaki tonu te manawanui.

Ka rite ki a koutou e taea te kite, te hanga o te styrene - he tukanga e, ki te kore ture haumaru kore he hoki kaimahi kinokore. Na reira, e mau ana i roto i ngā mahi hanga i roto i hinonga kia rite tupato, me te tūpato. Kia mataara, ka hoko rauemi hanga hou me te kai i roto i ngā terei.

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