Ọtụtụ ndị ahịa site na webụsaịtị anyị gaa na ekwentị ka ị gakwuru ụdị akpa akpa na ngwa ngwa, nke taa dongle kpara akpa xiaobian ịkọwa ụdị akpa akpa na oke ngwa.
A na-akpọkwa akpa ndị a kpara akpa dị ka akpa akpụkpọ agwọ. Ọ bụ rọba, a na-ejikarị eme nkwakọ ngwaahịa. Akụrụngwa ya na-abụkarị polyethylene, polypropylene na akụrụngwa plastik ndị ọzọ. Ihe na-esonụ bụ mmalite nke ụdị na ngwa nke akpa kpara akpa.
ụdị
Isi akụrụngwa maka mmepụta mba ọzọ bụ polyethylene (PE), ebe isi ihe maka mmepụta ụlọ bụ polypropylene (PP), resin thermoplastic nke ethylene polymerization kwadebere. Na ụlọ ọrụ mmepụta ihe, a na-etinyekwa copolymer nke ethylene nwere obere -olefin. Odorless, na-adịghị egbu egbu, waxy polyethylene, na magburu onwe ala okpomọkụ na-eguzogide (opekempe na-arụ ọrụ okpomọkụ ruo -70 ~ 100 ℃), ezigbo chemical kwụsie ike, iguzogide ọtụtụ acid na alkali corrosion (oxidation eguzogide acid), insoluble n'ozuzu solvents na ụlọ okpomọkụ, obere mmiri absorption, magburu onwe eletriki mkpuchi arụmọrụ; Ọ bụ polyethylene (mkpuchi kemịkalụ na eletriki) maka nrụgide gburugburu ebe obibi; Mechanical mmetụta) nnọọ mmetụta, adịghị mma iguzogide okpomọkụ ịka nká. Njirimara nke polyethylene dịgasị iche site n'ụdị gaa n'ụdị, tumadi dabere na usoro ihe omimi 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 na-emepụta ihe nkiri, arịa, pipeline, otu waya, waya na eriri, ihe ndị dị mkpa kwa ụbọchị, wdg. A pụkwara iji ya mee ihe dị ka ihe mkpuchi mkpuchi ugboro ugboro maka TV na radar. Site na mmepe nke ụlọ ọrụ petrochemical, mmepụta polyethylene etolitela ngwa ngwa, na-aza ihe dị ka otu ụzọ n'ụzọ anọ nke mkpokọta plastik. Na 1983, ụwa ngụkọta mmepụta ike nke polyethylene bụ 24.65 Mt, na ike nke osisi a na-ewu bụ 3.16 Mt.
polypropylene
Thermoplastic resin kwadebere site propylene polymerization. Enwere nhazi atọ nke mkpokọta isomorphism, random na interisomorphism. Ihe ndị bụ isi nke ngwaahịa mmepụta ihe bụ ihe ndị na-emepụta ihe. Polypropylene tinyekwara copolymers nke propylene na obere ethylene. Ọ na-abụkarị translucent enweghị agba siri ike, enweghị ụtọ na nke na-adịghị egbu egbu. N'ihi nhazi ya mgbe niile na kristal dị elu, ebe mgbaze ahụ ruru 167 ℃. Ọ na-eguzogide okpomọkụ na ngwaahịa nwere ike igba ogwu site na uzuoku. Njupụta nke 0.90 g/cm3 bụ plastik kacha dị mfe zuru ụwa ọnụ. Nguzogide corrosion, ike ike 30 MPa, ike, siri ike na nghọta dị mma karịa polyethylene. Ọdịmma ndị ahụ bụ nguzogide mmetụta dị ala na ịka nká dị mfe na obere okpomọkụ, nke enwere ike imeri site na mgbanwe na mgbakwunye nke antioxidants n'otu n'otu.
Agba nke akpa kpara na-adịkarị ọcha ma ọ bụ na-acha ọcha, anaghị egbu egbu na enweghị ụtọ, n'ozuzu obere emerụ ahụ mmadụ. Ọ bụ ezie na e si na rọba kemịkal dị iche iche mee ha, ha na-adị mma na gburugburu ebe obibi ma na-emegharị ha.
A na-eji akpa kpara akpa eme ihe n'ọtụtụ ebe, tumadi maka ịkwakọ ihe dị iche iche, na-ejikwa ya na ụlọ ọrụ.
A na-eji resin polypropylene mee akpa rọba, gbatịa wee gbatịa n'ime silk dị larịị, wee kpaa ya n'ime akpa.
A na-eji akwa rọba eme akpa rọba kpara akpa site na iyi.
Ejiri ya maka ịkwakọ ntụ ntụ ma ọ bụ ihe siri ike granular na isiokwu na-agbanwe agbanwe. A na-ekewa akpa rọba ihe mejupụtara akpa akpa abụọ n'ime otu yana akpa atọ n'ime otu dịka ihe mejupụtara ya siri dị.
Dịka usoro ịkwa akwa si dị, enwere ike kewaa ya n'ime akpa akwa akwa akwa, akpa ihu ihu, ntinye akpa na akpa akwa akwa.
Dabere na obosara dị irè nke akpa ahụ, enwere ike kewaa ya na 450, 500, 550, 600, 650 na 700 mm. Onye na-ebubata ya na onye na-azụ ahịa kwadoro nkọwapụta pụrụ iche.
Oke ngwa
1. Nkwakọ ngwaahịa maka ụlọ ọrụ mmepụta ihe na ọrụ ugbo
Site na mmepe na ngwa nke akpa akpa na-agbanwe agbanwe, a na-eji akpa akpa akpa rọba eme ihe na mmiri, njem na nkwakọ ngwaahịa na ngwaahịa ugbo. A na-eji akpa rọba kpara akpa n'ọtụtụ ebe na nkwakọ ngwaahịa ndị ọrụ ugbo. A na-eji akpa rọba kpara akpa n'ọtụtụ ebe na ngwaahịa mmiri. Nkwakọ ngwaahịa, nkwakọ ngwaahịa anụ ọkụkọ, ihe mkpuchi ugbo, shading cultivation, windproof, ebe nchekwa akụ mmiri igwe na ihe ndị ọzọ. Ngwaahịa ndị a na-ahụkarị: akpa akpa nri, akpa akpa kemịkalụ, akpa akpa kpara akpa, akpa urea, akpa ụgbụ nri, akpa ụgbụ mkpụrụ osisi, wdg.
2. Nkwakọ ngwaahịa nri
Rice, ntụ ọka na nkwakọ ngwaahịa nri ndị ọzọ na-eji nke nta nke nta na-eji akpa kpara akpa. Akpa kpara akpa bụ: akpa akpa osikapa, akpa ntụ ọka, akpa ọka na akpa ndị ọzọ kpara akpa.
3. njem njem
A na-eji ụlọ ntu nwa oge, nche anwụ, akpa njem na akpa dị na ụlọ ọrụ njem nlegharị anya maka akwa akwa rọba. A na-eji ụlọ ntu dị iche iche eme ihe dị ka ebe nchekwa
A na-eji ụlọ ntu nwa oge, nche anwụ, akpa njem na akpa dị na ụlọ ọrụ njem nlegharị anya maka akwa akwa rọba. A na-eji ụlọ ntu eme ihe n'ọtụtụ ebe dị ka ihe mkpuchi maka njem na nchekwa, na-edochi ụlọ ntu owu dị arọ ma na-akpụ akpụ. A na-ejikwa ngere na ntupu dị n'ime ụlọ eme ihe na akwa rọba. A na-ahụkarị: akpa ngwa ngwa, akpa nkwakọ ngwaahịa ngwa ngwa. Ngwunye ibu, ngwugwu ibu, wdg.
Ihe injinia
Ebe ọ bụ na mmepe nke geotextile na 1980s, ngwa ngwa nke plastic kpara akwa na-agbasawanye, nke a na-ejikarị na obere nchekwa mmiri, ọkụ eletrik, okporo ụzọ, okporo ụzọ ụgbọ okporo ígwè, ọdụ ụgbọ mmiri, m na-ewu na agha. N'ime ọrụ ndị a, geosynthetics nwere ọrụ nke nzacha, drainage, nkwado, ikewapụ na njikwa anya mmiri. Plastic geotextiles bụ otu n'ime geotextiles sịntetik.
Ihe eji achịkwa ide mmiri
Akpa kpara akpa dị mkpa maka njikwa ide mmiri. Ha dịkwa mkpa n'iwu mgbidi, osimiri, ụgbọ okporo ígwè na okporo ụzọ. Ha bụ akpa mgbochi ozi, akpa akpa akwa ọkọchị na akpa mgbochi ide mmiri.
N'elu bụ obere mebere maka onye ọ bụla finishing nke kpara akpa ụdị na akporo ngwa nke metụtara consulting, site na-ekere òkè nke ọdịnaya, ụdị na ngwa nso nke kpara akpa nwere ụfọdụ cognitive, ma ọ bụrụ na ị chọrọ ịbanye miri n'ime akpa nke ahịa ozi, nwere ike ịkpọtụrụ onye na-ere ahịa na ụlọ ọrụ anyị, ma ọ bụ n'ebe ọwụwa anyanwụ na kpara akpa na-na-ntụpọ nnyocha, a na-atụle nkwurịta okwu akwụkwọ na nke a.
Oge nzipu: Jul-03-2020