Polyvinyl chloride (PVC) bụ polima e ji polymerization nke vinyl chloride monomer (VCM) mee n'ihu ndị na-emepụta ihe dịka peroxides na azo compounds ma ọ bụ site na usoro nke free radical polymerization n'okpuru ọrụ nke ìhè ma ọ bụ okpomọkụ. PVC bụ ihe polymer nke na-eji chlorine atom dochie atọm hydrogen na polyethylene, a na-akpọkwa vinyl chloride homopolymers na vinyl chloride copolymers vinyl chloride resins.
Agbụ ígwè PVC nwere atọm chlorine polar siri ike nke nwere ike intermolecular dị elu, nke na-eme ka ngwaahịa PVC sie ike, sie ike, na ụda igwe, ma nwee ezigbo mgbochi ire ọkụ (nkwụsị ire ọkụ na-ezo aka na ihe onwunwe nke ihe nwere ma ọ bụ nke ihe nwere mgbe a gwọchara ya iji belata mgbasa nke ire ọkụ); agbanyeghị, ụkpụrụ dielectric ya na dielectric loss angle tangent buru ibu karịa nke PE.
Resin PVC nwere obere ọnụọgụ nke njikọ abụọ, agbụ ígwè na ihe fọdụrụ na mmalite nke ihe fọdụrụ na mmeghachi omume polymerization, tinyere atọm chlorine na hydrogen n'etiti atọm carbon abụọ dị nso, nke a na-ewepụ klorin ngwa ngwa, na-ebute mmeghachi omume mmebi nke PVC ngwa ngwa n'okpuru ọrụ nke ìhè na okpomọkụ. Ya mere, ngwaahịa PVC kwesịrị itinye ihe ndị na-eme ka okpomọkụ sie ike, dị ka calcium-zinc heat stabilizer, barium-zinc heat stabilizer, lead salt heat stabilizer, organic tin stabilizer, wdg.
Ngwa ndị bụ isi
PVC dị n'ụdị dị iche iche, enwere ike ịhazi ya n'ọtụtụ ụzọ dị iche iche, gụnyere ịpị, ịpụpụ ya, ịgba ya n'ime mmiri, na mkpuchi ya. A na-ejikarị plastik PVC eme ihe n'imepụta ihe nkiri, akpụkpọ anụ e ji aka rụọ, mkpuchi waya na eriri, ngwaahịa siri ike, ala ụlọ, arịa ụlọ, ngwa egwuregwu, wdg.
A na-ekewa ngwaahịa PVC n'ime ụdị atọ: siri ike, ọkara siri ike na nro. A na-ahazi ngwaahịa siri ike na ọkara siri ike na-enweghị ma ọ bụ jiri obere plastik, ebe a na-eji nnukwu plastik arụ ọrụ ngwaahịa dị nro. Mgbe etinyere plastik, enwere ike ibelata okpomọkụ mgbanwe iko, nke na-eme ka ọ dịkwuo mfe nhazi na obere okpomọkụ ma na-eme ka mgbanwe na plasticity nke yinye molekul dịkwuo elu, ma na-eme ka o kwe omume ịmepụta ngwaahịa dị nro nke na-agbanwe agbanwe na okpomọkụ ụlọ.
1. Profaịlụ PVC
A na-ejikarị ya eme ọnụ ụzọ na windo na ihe ndị na-echekwa ike.
2. Paịpụ PVC
Ọkpọkọ PVC nwere ọtụtụ ụdị dị iche iche, arụmọrụ dị mma na ọtụtụ ojiji, ma na-arụkwa ọrụ dị mkpa n'ahịa.
3. Ihe nkiri PVC
A pụrụ ime PVC ka ọ bụrụ ihe nkiri doro anya ma ọ bụ nke nwere agba nke a kapịrị ọnụ site na iji kalenda, a na-akpọkwa ihe nkiri a mepụtara site na usoro a ihe nkiri calendered. A pụkwara iji igwe ịkpụzi ihe PVC mee ihe n'ime ihe nkiri, a na-akpọkwa ihe nkiri a mepụtara site na usoro a ihe nkiri ịkpụzi ihe. A pụrụ iji ihe nkiri a mee ọtụtụ ihe ma nwee ike ịhazi ya ka ọ bụrụ akpa, uwe mmiri ozuzo, ákwà tebụl, ákwà mgbochi, ihe egwuregwu a na-afụ afụ, wdg site na iji ụzọ ịkpụ na imechi okpomọkụ. A pụrụ iji ihe nkiri doro anya sara mbara wuo ụlọ griinhaus na ụlọ griinhaus plastik, ma ọ bụ jiri ya mee ihe dị ka ihe nkiri ala.
4. Obodo PVC
Agbakwunyere ya na ihe na-eme ka ihe sie ike, mmanụ na ihe na-emeju ihe, mgbe agwakọtara ya, enwere ike itinye PVC n'ime paịpụ siri ike dị iche iche, paịpụ ndị dị ka ọdịdị na paịpụ corrugated na extruder, ma jiri ya mee ihe dị ka paịpụ mmiri, paịpụ mmiri ọṅụṅụ, ihe mkpuchi waya eletriki ma ọ bụ ihe e ji aka mee steepụ. A na-ekpuchi mpempe akwụkwọ calender ndị ahụ ma pịa ha ọkụ iji mepụta mpempe akwụkwọ siri ike nke dị iche iche ọkpụrụkpụ. Enwere ike ịkpụ mpempe akwụkwọ ndị ahụ n'ụdị achọrọ wee jiri ikuku ọkụ gwakọta ha site na iji mkpanaka njikọta PVC n'ime tankị nchekwa dị iche iche, ọkpọkọ na akpa, wdg.
5. Ngwaahịa dị nro nke PVC
Site na iji ihe na-ewepụta ihe, enwere ike itinye ya n'ime paịpụ, waya, waya, wdg.; site na iji igwe ịkpụzi ihe dị iche iche, enwere ike ime ya ka ọ bụrụ akpụkpọ ụkwụ plastik, akpụkpọ ụkwụ, akpụkpọ ụkwụ, ihe egwuregwu ụmụaka, akụkụ ụgbọala, wdg.
6. Ihe eji echekwa ihe na PVC
Ngwaahịa PVC maka nkwakọ ngwaahịa bụ isi maka ọtụtụ akpa, ihe nkiri na mpempe akwụkwọ siri ike. A na-emepụta akpa PVC maka mmiri mineral, ihe ọṅụṅụ, karama ịchọ mma, kamakwa maka nkwakọ mmanụ a nụchara anụcha.
7. Ihe mkpuchi PVC na ala ụlọ
A na-ejikarị ákwà mkpuchi PVC dochie ákwà mkpuchi aluminum, taịlị ala PVC, ma e wezụga akụkụ nke resin PVC, ihe ndị ọzọ fọdụrụ bụ ihe eji emegharị ihe, ihe mgbakwunye, ihe nzacha na ihe ndị ọzọ, nke a na-ejikarị eme ihe n'ala ọdụ ụgbọ elu na ebe ndị ọzọ siri ike.
8. Ngwaahịa ndị ahịa PVC
A na-ahụ ngwaahịa PVC n'ebe niile ná ndụ anyị kwa ụbọchị. A na-eji PVC eme ụdị akpụkpọ anụ arụ dị iche iche maka akpa akpa, ngwaahịa egwuregwu dịka bọọlụ basketball, bọọlụ bọọlụ na bọọlụ rugby. A na-ejikwa ya eme uwe na eriri ihe nchebe pụrụ iche. Ákwà PVC maka uwe na-abụkarị ákwà ndị na-amịkọrọ mmiri (anaghị achọ mkpuchi) dịka ponchos, uwe ogologo ọkpa ụmụaka, jaket akpụkpọ anụ arụ na akpụkpọ ụkwụ mmiri ozuzo dị iche iche. A na-ejikwa PVC eme ọtụtụ ngwaahịa egwuregwu na ntụrụndụ dịka ihe egwuregwu, ndekọ na ngwa egwuregwu.
Oge ozi: Julaị-19-2023