Fa'avae o le fa'agasologa o tui fa'apipi'i mo le gaosiga o vaega palasitika

O mea palasitika ua resitalaina se atina'e tulaga ese i le 50 tausaga talu ai, e sili atu nai lo isi mea fa'atau.

I le taimi nei i Europa i Sisifo, o le tele o gaosiga o pilasitika mea e sili atu i le gaosiga o le Uamea.

O le faʻatupulaia o le faʻaaogaina o loʻo faʻamatalaina e ala i le faʻateleina o oloa faʻatau, ua tele na suia ai palasitika, uʻamea ma tioata e fai ma mea mo koneteina, afifiina, mea faufale, mea tau eletise, ma isi.

O mea lelei e ofoina mai e mea palasitika pe a faʻatusatusa i isi mea o loʻo taua i lalo:

• E mama ma o lea e faʻaitiitia ai tau o felauaiga.
• E tumau ma e masani ona malolosi ma saogalemu.
• E mafai ona gaosia i le tele o foliga ma faʻaoga.
• E iai a latou uiga sili ona lelei e pei o le vevela, faʻalogo ma le eletise eletise.
• E mafai ona faʻaaogaina i meaʻai.

O palasitika e faʻavasegaina e faʻavae i luga ole DIN 7728 ma DIN 16780 tulaga mo faʻafefiloi palasitika.

O palasitisi o mea faʻaletino e taʻua faʻapitoa polymers, e maua mai le Petroleum poʻo le Natural Gas, o loʻo ave ai le Carbon C, hydrogen H, oxygen O ma isi molelaʻau pei ole nitrogen N, chlorine CL, sulfur S poʻo CO2. I le taimi nei, na'o le 4% o le suau'u ua liua i mea palasitika.

pilasitika e maua mai le suau'u e ala i le fa'amama vevela (ta'e), lea e vaeluaina ai le Ethylene, Propylene, Butylene ma isi hydrocarbons.

Macromolecules, poʻo palasitika, e faia i le tele o iunite faʻavae faigofie, e taʻua o monomers; a'o le tu'ufa'atasia o nei mea e fesoasoani i fegalegaleaiga fa'a-kemikolo e maua mai ai polymers.

O a polymers?

Polymers e gaosia e ala i le tuufaatasia o le faitau selau afe o molelaiti laiti e taʻua o monometers e fausia ai filifili eseese tele.

Fa'avasegaga o palasitisi:

• O palasitika e faʻavasegaina e tusa ai ma taʻiala eseese, faʻavae i luga o:
• Polymerization faiga. (polymerization, polycondensation, polyaddition).
• Faiga fa'akomepiuta. (fa'a'ali'i, fa'amea tetele).

Amioga / meatotino a le polymer. (Oloa, palasitika faʻapitoa, palasitika maualuga faʻatinoga).

E tusa ai ma mea o loʻo i luga, ua faʻavasegaina palasitika i:

• Temoplastika. (Polyolefins, Vinyl po'o Acrylic Polymers, Polyamides, Polyesters, etc.)
• Maumea.
• Elastomers.

O mea faʻainisinia o mea faʻapipiʻi e fesoʻotaʻi ma le Degree of Polymerization, o se aofaʻiga e fua ai le numera o soʻotaga e fausia ai le filifili mole. O le mea moni, o le maualuga o le tikeri o le polymerization, o le maualuga o le viscosity, o le sili atu lea o le tensile ma loimata, o le sili atu lea o le maaa, o le sili atu lea o le aʻafiaga o le tetee ma, i le isi itu, o le itiiti ifo o le faʻamaʻi, faʻaitiitia le fulafula malosi ma faʻaitiitia le faʻalavelave faʻalavelave. .

I le tulaga o mea Elastomeric ma Thermoset, o latou meatotino o loʻo faʻatulagaina e le Degree of Crosslinking, lea e fuaina ai le pasene o togi faʻafesoʻotaʻi (fesoʻotaʻiga i le va o mole) i le polymer system. O le maualuga o le maualuga o le fesoʻotaʻiga, o le sili atu lea o le teteʻe o le meafaitino, o lona faʻamalosi ma lona teteʻe vevela.

O palasitika e mama, e mafai ona faigofie ona faʻapipiʻiina, latou te ofoina atu ni mea faʻapitoa ma faʻainisinia lelei, e mafai ona gaosia i lanu eseese, e mafai ona faʻafefiloi ma isi palasitika poʻo mea faʻapitoa, e maualalo le maualuga o le vevela ma le eletise, e matua tete'e atu i vaila'au fa'ama'i, e fa'apa'u, e mafai ona toe fa'aaogaina ma/po'o toe fa'aaogaina.

Mo nisi fa'amatalaga e uiga i fa'avae o le faiga tui tui palasitika mo le gaosiga o vaega palasitika, e mafai ona e asiasi i Djmolding i https://www.djmolding.com/description-of-the-plastic-injection-molding-method-and-manufacturing-process-step-by-step/ mo le sili atu nisi faʻamatalaga.