Taa, anyị ga-ewebata ihe atọ bụ isi maka epe net, ọ gụnyere LDPE HDPE PP.

一,Isi ihe dị iche n'etiti LDPE (polyethylene njupụta dị ala) na HDPE (polyethylene njupụta dị elu) dabere na njupụta ha, akụrụngwa anụ ahụ, ojiji, wdg.

1. Njupụta na ọdịdị:

Njupụta nke LDPE na-adịkarị n'etiti 0.910-0.940g/cm³, ebe njupụta nke HDPE dị n'etiti 0.940-0.976g/cm³.

LDPE nwere ọdịdị ọcha nke mmiri ara ehi ma na-atụgharị ruo n'ókè ụfọdụ na akụkụ ndị dị mkpa, ebe HDPE na-abụkarị opaque ma nwee ọdịdị mmiri ara ehi na-acha ọcha na translucent.

2. Njirimara anụ ahụ:

LDPE dị nro dị nro, nwere ezigbo isi ike, nghọta dị mma na mmetụta na-amị amị. Ọ nwere nkwụsi ike akụkụ na-adịghị mma n'oge ịkpụzi na nhazi, ọ na-esikwa ike ijikọ.

HDPE nwere ike dị elu, ịdị mma siri ike, na ike siri ike, dị nso PP (polypropylene), siri ike karịa PP, ma nwee ezigbo nguzogide okpomọkụ.

3. Jiri:

LDPE nwere viscosity gbazee dị ala, ezigbo mmiri, yana ọ dị mfe ịhazi. Ọ dị mma maka ịmepụta ọkpọkọ mmiri ọṅụṅụ, wdg.

HDPE dabara adaba maka ịme ọkwa ịse, ọkwa ịkpụzi injection, ọkwa oghere na ngwaahịa ọkwa ihe nkiri, dị ka ụgbụ azụ, karama ihe ọṅụṅụ na akpa nkwakọ ngwaahịa.

4. Nguzogide kemịkalụ:

Ha abụọ nwere ezigbo nguzogide nke ọtụtụ kemịkalụ ụlọ na nke ụlọ ọrụ, mana HDPE na-eguzogide acid, corrosion alkali na ihe mgbaze organic.

5. Nguzogide okpomọkụ na ịka nká:

LDPE nwere nguzogide okpomọkụ na-adịghị mma, nguzogide ịka nká na nkwụsi ike gburugburu ebe obibi dị ka HDPE, ọ na-adịkarịkwa ka ịka nká, decomposition na discoloration.

HDPE nwere ezigbo nguzogide okpomoku dị elu mana nguzogide okpomọkụ dị ala. Ihe ọghọm ya bụ na nguzogide ịka nká ya na nguzogide nrụgide gburugburu ebe obibi adịghị mma dị ka LDPE.

二,Isi ihe dị iche n'etiti ihe PP na PE bụ ndị a:

1. Efrata: Isi ihe nke PP bụ polypropylene, ebe isi ihe nke PE bụ polyethylene.

2. Njirimara: PP na-abụkarị translucent colorless siri ike, odorless na-adịghị egbu egbu, na elu okpomọkụ na-eguzogide, nghọta, n'ibu ike na ndị ọzọ àgwà; PE bụ ihe kọntaktị nri a ma ama n'ụwa, anaghị egbu egbu, enweghị ụtọ, ọ na-esi ísì ụtọ, ọ na-adị ka wax, na-agbaso ụkpụrụ ịdị ọcha maka nkwakọ nri, nwere ezigbo ductility, anaghị emebi ngwa ngwa, ma nwee ezigbo mkpuchi ọkụ.

3. Oke ojiji: PP nwere ike iji mee ka griin haus air awnings, mulch films, omenala karama, wdg, na nwekwara ike-eji na-eme ka nri ntụgharị igbe, nri akpa, wdg PE nwere ike esichara site igbu ịkpụzi, extrusion. , Ịkpụzi injection na ụzọ ndị ọzọ, a na-ejikwa ya na-emepụta ihe nkiri, ngwaahịa oghere, wdg.