Akụrụngwa

Nnukwu polyethylene (HDPE) ma ọ bụ polyethylene nke dị elu (PEHD) bụ polyethylene thermoplastic mere site na mmanụ ala. A na - akpọ ya mgbe ụfọdụ "alkathene" ma ọ bụ "polythene" mgbe ejiri ya maka ọkpọkọ. Site na oke-ike-na-njupụta ruru, a na-eji HDPE na mmepụta nke karama plastik, piping na-eguzogide corrosion, geomembranes, na plastic osisi. A na-ejikarị HDPE emegharị ihe ọzọ, ma nwee nọmba "2" dịka koodu njirimara resin (nke a na-akpọbu akara akara imegharị).

Polyethylene terephthalate (mgbe ụfọdụ poly dere (ethylene terephthalate)), nke a na-akpọkarị PET, PETE, ma ọ bụ PETP ma ọ bụ PET-P, bụ polymer thermoplastic resmi nke ezinụlọ polyester a na-ejikarị eme ihe maka uwe, arịa maka ihe ọ forụidsụ na mmiri Udiri ihe eji eme oku, ihe eji aru ya maka ihe eji aru oru.

Na mgbakwunye na PET (homopolymer) PET, PET gbanwetụrụ site na copolymerization dịkwa.

Polypropylene (PP), makwaara dị ka polypropene, bụ polymerrop thermal eji ya n'ọtụtụ ngwa dị iche iche gụnyere nkwakọ na akara, textiles (dịka, ụdọ, uwe elu na akwa kapus), ụlọ ọrụ, akụkụ plastik na igbe a na-eji ike ị nweta nke ụdị dị iche iche, ụlọ nyocha. akụrụngwa, igwe na-ekwu okwu, ihe na-akwọ ụgbọ ala, na mpempe akwụkwọ polymer. Ihe mgbakwunye polymer mere site na monomer propylene, ọ na-emebi emebi ma na-eguzogide ọtụtụ mgbaze kemịkal, ala na acid.