Ọtụtụ ndị ahịa na-eji weebụsaịtị anyị akpọ oku ka ha gaa leta ụdị akpa e ji akpa ákwà na ụdị ngwa e ji akpa ákwà, nke taa bụ xiaobian, iji kọwaa ụdị akpa e ji akpa ákwà na ụdị ngwa e ji akpa ákwà.
A makwaara akpa ndị a kpara akpa dịka akpa akpụkpọ agwọ. Ọ bụ plastik, nke a na-ejikarị eme ihe maka nkwakọ ngwaahịa. Ihe ndị e ji eme ya bụkarị polyethylene, polypropylene na ihe ndị ọzọ e ji eme plastik kemịkalụ. Ihe ndị a bụ okwu mmalite maka ụdị na ojiji nke akpa ndị a kpara akpa.
ụdị
Isi ihe eji emepụta ihe n'èzí mba ọzọ bụ polyethylene (PE), ebe isi ihe eji emepụta ihe n'ime ụlọ bụ polypropylene (PP), resin thermoplastic nke ethylene polymerization kwadebere. N'ụlọ ọrụ mmepụta ihe, a na-etinyekwa copolymers nke ethylene nwere obere -olefin. Polyethylene na-enweghị isi, nke na-adịghị egbu egbu, nke nwere waxy polyethylene, nke nwere ezigbo iguzogide okpomọkụ dị ala (okpomọkụ ọrụ kacha nta ruo -70 ~ 100℃), ezigbo nkwụsi ike kemịkalụ, iguzogide ọtụtụ acid na alkali corrosion (acid na-eguzogide oxidation), nke na-anaghị agbaze na ihe mgbaze n'ozuzu na okpomọkụ ụlọ, obere nnabata mmiri, arụmọrụ mkpuchi eletriki dị mma; Ọ bụ polyethylene (mkpuchi kemịkalụ na eletriki) maka nrụgide gburugburu ebe obibi; Mmetụta Mechanical) nke na-adịghị emerụ ahụ, nke na-eguzogide ịka nká okpomọkụ. Njirimara nke polyethylene dị iche iche site na ụdị ruo ụdị, dabere na nhazi molekul ya na njupụta ya. Enwere ike nweta ngwaahịa nwere njupụta dị iche iche (0.91 ruo 0.96 g/cm3) site na ụzọ mmepụta dị iche iche. Enwere ike ịhazi polyethylene site na usoro nhazi thermoplastic nkịtị (lee nhazi plastik). A na-eji ya eme ihe n'ọtụtụ ebe n'ịmepụta ihe nkiri, akpa, ọkpọkọ mmiri, waya otu, waya na eriri, ihe ndị dị mkpa kwa ụbọchị, wdg. A pụkwara iji ya mee ihe dị ka ihe mkpuchi ugboro ugboro maka TV na radar. Site na mmepe nke ụlọ ọrụ petrochemical, mmepụta polyethylene etolitela ngwa ngwa, na-eru ihe dị ka otu ụzọ n'ụzọ anọ nke mmepụta plastik niile. Na 1983, ikike mmepụta zuru ụwa ọnụ nke polyethylene bụ Mt 24.65, ikike nke ụlọ ọrụ a na-ewu bụ Mt 3.16.
polypropylene
Resin Thermoplastic nke propylene polymerization kwadebere. E nwere nhazi atọ nke isomorphism zuru oke, random na interisomorphism. Isi ihe dị na ngwaahịa ụlọ ọrụ mmepụta ihe bụ ihe ndị yiri ibe ha. Polypropylene gụnyekwara copolymers nke propylene na obere ethylene. Ọ na-abụkarị ihe siri ike na-enweghị agba, enweghị ụtọ na-adịghị egbu egbu. N'ihi nhazi ya mgbe niile na nnukwu kristal, ebe agbaze ahụ ruru 167℃. Ọ na-eguzogide okpomọkụ ma enwere ike ime ka ngwaahịa ahụ dị ọcha site na uzuoku. Njupụta nke 0.90 g/cm3 bụ plastik kachasị mfe zuru ụwa ọnụ. Nguzogide corrosion, ike nrụgide 30 MPa, ike, nkwụsi ike na nghọta ka mma karịa polyethylene. Ihe ọghọm ndị ahụ bụ obere iguzogide mmetụta na ịka nká dị mfe na obere okpomọkụ, nke enwere ike imeri site na mgbanwe na itinye antioxidants n'otu n'otu.
Agba akpa ndị a kpara akpa na-abụkarị ọcha ma ọ bụ ọcha, ọ naghị egbu egbu ma ọ bụ enweghị ụtọ, ọ naghị emerụ ahụ mmadụ ahụ nke ọma. Ọ bụ ezie na e ji ọtụtụ plastik kemịkalụ mee ha, ha anaghị emerụ gburugburu ebe obibi ma dịkwa mfe ịgbanwe.
A na-ejikarị akpa e ji akpa kpaa eme ihe nke ukwuu, ọkachasị maka ịkwakọba ihe dị iche iche, a na-ejikwa ya eme ihe nke ọma n'ụlọ ọrụ mmepụta ihe.
A na-eji polypropylene resin mee akpa plastik a kpara akpa, a na-ewepụta ya ma gbasaa ya ka ọ bụrụ silk dị larịị, wee kpaa ya ka ọ bụrụ akpa.
A na-eji ákwà plastik mee akpa plastik e ji ihe mejupụtara ya site na iyi.
A na-eji ya eme ihe maka ịkwakọba ntụ ntụ ma ọ bụ ihe siri ike na ihe ndị na-agbanwe agbanwe. A na-ekewa akpa plastik a kpara n'ime akpa abụọ n'ime otu na akpa atọ n'ime otu dịka ihe mejupụtara ya si dị.
Dịka usoro ịkwa akwa si dị, enwere ike kewaa ya n'ime akpa ịkwa akwa ala, akpa akwa akwa, akpa itinye na akpa ịkwa akwa njikọ.
Dabere n'obosara nke akpa ahụ nke ọma, enwere ike kewaa ya n'ime 450, 500, 550, 600, 650 na 700 mm. Onye na-ebubata ya na onye ahịa ahụ kwekọrịtara na nkọwapụta pụrụ iche.
Oke ngwa dị iche iche
1. Akpa nkwakọ ngwaahịa maka ngwaahịa ụlọ ọrụ mmepụta ihe na ọrụ ugbo
Site na mmepe na itinye akpa akpa ndị na-agbanwe agbanwe n'ọrụ, a na-eji akpa akpa plastik eme ihe nke ukwuu n'ọrụ ụgbọ mmiri, njem na nkwakọ ngwaahịa na ngwaahịa ugbo. A na-eji akpa plastik eme ihe nke ukwuu n'ihe gbasara nkwakọ ngwaahịa ugbo. A na-eji akpa plastik eme ihe nke ukwuu n'ihe gbasara mmiri. Nkwakọ ngwaahịa, nkwakọ ngwaahịa nri anụ ọkụkọ, ihe mkpuchi ugbo, ndò ịkọ ihe ubi, ikuku na-egbochi, ebe obibi mmiri ozuzo na ihe ndị ọzọ. Ngwaahịa ndị a na-ahụkarị: akpa nri, akpa kemịkalụ, akpa putty powder, akpa urea, akpa akwụkwọ nri, akpa net mkpụrụ osisi, wdg.
2. Nkwakọ ngwaahịa nri
Osikapa, ntụ ọka na ihe ndị ọzọ e ji echekwa nri na-eji obere oge eme ihe. Akpa ndị a na-ejikarị akpa osikapa, akpa ntụ ọka, akpa ọka na akpa ndị ọzọ e ji akpa nri.
3. Njem njem
A na-eji ákwà ndị e ji plastik kpaa ákwà n'ọtụtụ ebe n'ụlọ ndị njem nlegharị anya, ụlọikwuu, nche anwụ, akpa njem na akpa nwa oge. A na-eji ụdị ụlọikwuu dị iche iche eme ebe obibi.
A na-eji ụlọ ntu nwa oge, nche anwụ, akpa njem na akpa n'ime ụlọ ọrụ njem nlegharị anya maka ákwà plastik a kpara akpa. A na-ejikarị ụlọ ntu eme ihe dị ka ihe mkpuchi maka ibuga na nchekwa, na-anọchi ụlọ ntu owu dị arọ na nke ebu. A na-ejikwa ogige na ntupu n'ime ụlọ eme ihe nke ọma na ákwà plastik. Ihe a na-ahụkarị: akpa njem, akpa nkwakọ ngwaahịa. Ngwugwu ibu, ngwugwu ibu, wdg.
Ihe injinia
Kemgbe e mepụtara geotextile n'afọ 1980, ebe a na-eji ákwà plastik kpara arụ na-agbasa, a na-ejikarị ya eme ihe n'ebe a na-echekwa obere mmiri, ike eletrik, okporo ụzọ, ụgbọ okporo ígwè, ọdụ ụgbọ mmiri, owuwu ebe a na-egwupụta ihe na owuwu ndị agha. N'ọrụ ndị a, geosynthetics nwere ọrụ nzacha, mmiri mmiri, nkwado, ikewapụ onwe na njikwa mmiri mmiri. Plastik geotextiles bụ otu n'ime geotextiles sịntetik.
Ihe njikwa idei mmiri
Akpa ndị a kpara akpa dị oke mkpa maka njikwa idei mmiri. Ha dịkwa oke mkpa n'iwu ebe a na-adọba ihe mgbochi mmiri, osimiri, ụgbọ okporo ígwè na okporo ụzọ. Ha bụ akpa ndị a kpara akpa megide ozi, akpa ndị a kpara akpa megide ọkọchị na akpa ndị a kpara akpa megide idei mmiri.
N'elu bụ obere ihe eji eme ka akpa ndị a kpara akpa dị mma maka onye ọ bụla, dịka ọmụmaatụ, imecha ụdị akpa ndị a kpara akpa na oke ojiji nke ndụmọdụ metụtara ya, site na ịkekọrịta ọdịnaya, ụdị na oke ojiji nke akpa ndị a kpara akpa nwere ụfọdụ nghọta, ọ bụrụ na ịchọrọ ịbanye n'ime akpa ozi ahịa, nwee ike ịkpọtụrụ onye na-ere ahịa na ụlọ ọrụ anyị, ma ọ bụ nyocha nke ọwụwa anyanwụ na akpa ndị a kpara akpa ozugbo, a na-atụle mkparịta ụka n'akwụkwọ a.
Oge ozi: Julaị-03-2020