Imegharị plastic karama - Nke abụọ Life of polyethylene terephthalate (PITA)

Recycling plastic karama - onye nke ntụziaka nke ojiji nke recycled ihe maka ọhụrụ nke akụ isi nke ndị polymeric ihe. Mgbe nhazi mkpofu nsogbu ya, na-enwetara e nwere ike re-eduzi ndị mmepụta, ọbụna na ụfọdụ constraints (nhazi, ịdị ọcha, omebe iwu, ahụ ike) jikọtara ugboro ugboro ojiji nke Polymers.

N'ihi na eziokwu na polyethylene terephthalate (PITA) nwere a zuru ezu anụ n'ibu Njirimara, imegharị ihe maka iji nke plastic karama si ya - na nọrọ ihe ka ukwuu streamlined usoro nke eji emegharị polima. E nwere isi ihe abụọ na ụdị ọgwụgwọ - n'ibu na chemical. A, ọtụtụ mgbe, imegharị ihe maka iji nke PITA karama a rụrụ mechanically, dị ka site chemical ụba chọrọ iji ngwaọrụ ma na-achọ na ojiji nke oké ọnụ akpali. Na n'ibu usoro adịghị achọ n'efu plasticization. PITA karama mbụ, ụdị si ndị ọzọ ụdị polima akpa (polyethylene, ịkwanyere) na extraneous ihe (okwuchi ájá). Dabere na chọrọ nke ikpeazụ ngwaahịa karama na-ota site na agba na ọbụna ụdị polima.

Mbụ nhazi nke plastic karama emee na mma na nkume igwe nri, nke na-ahụ na-kpụrụ nke PITA 0.5-10 mm dị ka a N'ihi nke nkà na ụzụ nhazi. Ihe polima obere achicha na-asa na ihe ngwọta nke caustic soda na mmiri, mgbe nke ọ na-mịrị amị na a akpan akpan technology, na iru mmiri nke 0.02-0.05% na a okpomọkụ nke 130 ° C. The ihicha usoro dị mkpa, ọdịda parameters chọrọ iru mmiri na-eduga ná irreversible arịa ọrịa nke ndị ọzọ akụrụngwa.

Mgbe ihicha, agglomeration ka nke ihe onwunwe nke na-emepụta dị ka a n'ihi nke sintering n'elu nzọụkwụ obere achicha technology n'ime obere lumps. Mgbe a na ogbo nke nhazi nke plastic karama nwere ike na-ada n'ihi na agglomerate nwere ike ugbua a ga-eji dị ka a akụrụngwa. Iji achapu ahụ e ji mara nke recycled, nke na-amị granulation. Dị ka a N'ihi ya, ọ PITA emeso ahụ ghọọ denser, na n'ihi ihe onwunwe bụ mfe iji na ekemende na-enweta ndị chọrọ ihe eji ọkọlọtọ akụrụngwa. Isi ebe ojiji nke ngwaọrụ si n'efu PITA bụ mmepụta nke fim, emep uta eri na karama. A, nyere n'ibu na rheological (eruba onwunwe) Njirimara nke arụgharịrị PITA na-iji na-emepụta containers dị iche iche ọgwụ. Dị ka containers recycled PITA na-adịghị mee ihe oriri. Eriri si recycled polyethylene terephthalate mgbe esichara n'ime kpara ndabere maka imewe nke carpets na uwe na textiles. Ọ na-emegharị Nlụpụta geotextile syntepon, mkpọtụ mkpuchi ihe, absorbent na nzacha ọcha, eletriki ngwaahịa, ngwa (site mgbatị), ụgbọala akụkụ.