Thermoplastic vs Thermoset

Thermoplastic vs Thermoset

Thermoplastic waxaa loola jeedaa hantida ay walaxdu qulquli karto oo beddeli karto marka la kululeeyo, oo ay ilaalin karto qaab gaar ah qaboojinta ka dib. Inta badan polymers-ka tooska ah waxay soo bandhigaan heerkul-kulul waxaana si fudud loogu farsameeyaa extrusion, duritaan ama dharbaaxo. Heerkulbeegga waxaa loola jeedaa hantida aan la jilcin karin oo la qaabayn karinepedhayalsan marka la kululeeyo, oo laguma milmi karo dareerayaasha. polymers buk ayaa leh hantidan.

Heerkulbeegtu waa isbeddel kiimiko. Ka dib markii la kululeeyay, qaabdhismeedku wuu beddelay oo wuxuu isu beddelay walxo kale. Tusaale ahaan, ma soo celin kartid ukunta ka dib marka la kariyo. Thermoplasticity waa isbeddel jireed. Waa uun in xaaladda maaddadu is beddesho marka la kululeeyo, laakiin qaab-dhismeedku isma beddelo. Wali waa hooyo. Tusaale ahaan, marka shumaca uu ku dhalaaliyo kulayl, waxaa lagu soo celin karaa shumaca asalka ah, laakiin gubashada shumaca waa isbeddel kiimikaad.

1. Thermoplastics

Way jilicsan tahay oo dareere ah marka la kululeeyo, wayna adkaataa marka la qaboojiyo. Habkani waa dib loo rogi karaa wuxuuna noqon karaa repecunay. Polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyoxymethylene, polycarbonate, polyamide, caag akril, polyolefins kale iyo copolymers ay, polysulfide, polyphenylene ether, chlorinated polyether, iwm waa thermoplastic. Silsilada molecular ee resin ee ku jira heerkulbeegyada kulligood waa toosan ama laamo. Ma jiro xidhiidh kiimikaad oo u dhexeeya silsiladaha molecular, wayna jilciyaan oo dareeraan marka la kululeeyo. Habka qaboojinta iyo adkeynta waa isbeddel jireed.

2. balaastiig kululaynta

Marka ugu horraysa la kululeeyo, way jilicsanaan kartaa oo qulquli kartaa. Marka lagu kululeeyo heerkul gaar ah, fal-celin kiimikaad ayaa ku dhacda isku-xidhka oo ay adkaato si ay u adkaato. Isbeddelkan waa mid aan laga noqon karin. Taas ka dib, marka mar kale la kululeeyo, ma noqon karto mid jilicsan oo qulqulaya. Waa iyada oo loo eegayo sifadan in habka wax-soo-saarka la sameeyo, iyo qulqulka caagga ah inta lagu jiro kuleylka ugu horreeya waxaa loo isticmaalaa in lagu buuxiyo daloolka cadaadiska, ka dibna lagu adkeeyo badeecad qaab iyo cabbir go'an. Qalabkan waxaa loo yaqaan heerkulbeeg.

Resin-ka balaastikada heerkulbeegga waa toosan ama laamood ka hor inta aan la daaweyn. Daawaynta ka dib, xidhidhka kiimikaad ayaa ka dhex abuurma silsiladaha molecular si loo sameeyo qaab-dhismeedka shabakad saddex-geesood leh. Ma aha oo kaliya in aan dib loo dhalaali karin, laakiin laguma milmi karo dareerayaasha. Phenolic, aldehyde, melamine formaldehyde, epoxy, polyester aan saturated ahayn, silicone iyo caagadaha kale dhamaantood waa balaastiig heerkulbeeg ah.

Thermoplastic vs Thermoset