ABS: Acrylonitrile Butadiene Styrene

Acrylonitrile butadiene styrene (ABS) bụ plastik nke bụ terpolymer, polymer nke nwere monomers atọ dị iche iche. A na -eme ABS site na polymerizing styrene na acrylonitrile n'ihu polybutadiene. Acrylonitrile bụ monomer synthetic nke mejupụtara propylene na amonia ebe butadiene bụ hydrocarbon mmanụ, na monomer styrene bụ nke dehydrogeneration nke ethyl benzene mere. Dehydrogenation bụ mmeghachi omume kemịkal nke gụnyere mwepụ nke hydrogen site na molecule organic ma bụrụ ntụgharị nke hydrogenation. Dehydrogenation na-atụgharị alkanes, nke na-adịchaghị arụ ọrụ ma si otú a dị ọnụ ala, na olefins (gụnyere alkenes), nke na-emegharị ma si otú a baa uru. A na -eji usoro mkpocha mmiri eme ihe nke ukwuu iji mepụta aromatics na styrene na ụlọ ọrụ mmanụ. E nwere ụdị abụọ: Otu bụ maka mwepụ nke ụdị na nke ọzọ bụ thermoplastic eji eme ngwaahịa. Ngwakọta ABS na -abụkarị ọkara styrene na nke fọdụrụ kwesịrị n'etiti butadiene na acrylonitrile. ABS na -agwakọta nke ọma na ihe ndị ọzọ dịka polyvinylchloride, polycarbonate, na polysulphones. Ngwakọta ndị a na -enye ohere maka ọtụtụ atụmatụ na ngwa.

N’akụkọ ihe mere eme, ABS bu ụzọ mepụta n’oge WWII dị ka onye nnọchi maka rọba. Agbanyeghị na ọ baghị uru na ngwa ahụ, ọ bịara dị ebe niile maka ngwa azụmaahịa n'afọ ndị 1950. Taa, a na -eji ABS n'ọtụtụ ngwa dị iche iche gụnyere ihe egwuregwu ụmụaka. Dịka ọmụmaatụ, a na -eji ihe mgbochi LEGO® eme ya n'ihi na ọ dị fechaa ma dịkwa ogologo. Ọzọkwa ịkpụzi na oke okpomọkụ na-eme ka ihe na-egbukepụ egbukepụ na okpomoku ọkụ dị mma mgbe ịkpụzi na obere okpomọkụ na-ebute nkwụsi ike na ike dị elu.

ABS bụ amorphous, nke pụtara na ọ nweghị ezigbo agbaze agbaze kama ọ na -enwe mgbanwe mgbanwe iko nke na -adịkarị 105◦C ma ọ bụ 221◦F. Ọ nwere ọkụ ọrụ na -aga n'ihu na -atụ aro site na -20◦C ruo 80◦C (-4◦F ruo 176◦ F). Ọ na -enwu enwu mgbe a na -ekpughere ya oke okpomọkụ dịka nke ọkụ na -emepe emepe mepụtara. Nke mbụ ọ ga -agbaze, wee sie, wee mụọ n'oké ọkụ ka plastik na -efesa. Uru ya bụ na ọ nwere nkwụsi ike dị elu ma na -egosipụta ike ọbụlagodi na obere okpomọkụ. Mwepu ọzọ bụ na mgbe ọkụ ABS ga -ebute ọgbọ anwụrụ ọkụ dị elu.

ABS na -eguzogide ọgwụ n'ọtụtụ ebe. Ọ na -eguzogide mmiri mmiri, alkalis, na phosphoric acid, mmanya hydrochloric na anụmanụ, mmanụ nri na mmanụ ịnweta. Mana ABS na -awakpo ụfọdụ ihe mgbaze. Ịkpọtụrụ ihe mgbaze na -esi ísì ụtọ, ketones na esters anaghị arụpụta ezigbo ihe. Ọ nwere oke ihu igwe. Mgbe ABS na -ere ọkụ, ọ na -emepụta oke anwụrụ ọkụ. Ìhè anyanwụ na -eweda ABS ala. Ngwa ya na bọtịnụ ntọhapụ nke eriri ụgbọ ala mere ka ncheta kachasị na nke kacha baa uru na akụkọ ntolite US. ABS na -eguzogide ọgwụ dị iche iche gụnyere acid, acid dilute na alkalis. Ọ na -arụ ọrụ nke ọma na aromatic na halogenated hydrocarbons.

Akụkụ kachasị mkpa nke ABS bụ mmetụta-nguzogide na ike. Enwere ike ịhazi ABS ka elu wee na -egbu maramara. Ndị na -eme egwuregwu ụmụaka na -eji ya n'ihi agwa ndị a. N'ezie, dị ka ekwuru, otu n'ime ndị ọrụ ama ama nke ABS bụ LEGO® maka ihe owuwu ihe egwuregwu ụmụaka nwere agba mara mma. A na -ejikwa ya eme ihe egwu, isi klọb golf, ngwaọrụ ọgwụ maka ịnweta ọbara, isi mkpuchi, ụgbọ mmiri na -acha ọcha, akpa, na igbe ebu.

ABS ọ na -egbu egbu?

ABS bụ ihe na -adịghị njọ n'ihi na enweghị carcinogens ọ bụla amaara ya, ọ nweghịkwa mmetụta ahụike mara mara metụtara ikpughere ABS. Nke ahụ kwuru, ABS adịghị adabara maka itinye ọgwụ.

Kedu ihe njirimara nke ABS?

ABS siri ike nke ukwuu, ọ bụ ya mere ejiri ya na ihe dị ka ụlọ igwefoto, ụlọ nchekwa, na nkwakọ ngwaahịa. Ọ bụrụ na ịchọrọ plastik dị ọnụ ala, nke siri ike, nke na -ejigide mmetụta mpụga, ABS bụ ezigbo nhọrọ.