Thermoplastic vs Thermoset

Thermoplastic vs Thermoset

Hōʻike ka Thermoplastic i ka waiwai i hiki i kahi mea ke kahe a hoʻololi i ka wā i wela ai, a hiki ke mālama i kekahi ʻano ma hope o ka hoʻoilo. ʻO ka hapa nui o nā polymers linear e hōʻike ana i ka thermoplasticity a maʻalahi ke hana ʻia e ka extrusion, injection a i ʻole ka puhi ʻana. Hōʻike ka Thermosetting i ka waiwai ʻaʻole hiki ke hoʻopalupalu a hoʻoheheʻe ʻia repei ka wa wela, a hiki ole ke hooheheeia iloko o na solvents. Loaʻa kēia waiwai i nā polymers nui.

He hoʻololi kemika. Ma hope o ka hoʻomehana ʻia, ua loli ka hale a lilo i mea ʻē aʻe. No ka laʻana, ʻaʻole hiki iā ʻoe ke hoʻihoʻi i ka hua ma hope o ka moʻa ʻana. ʻO ka Thermoplasticity kahi hoʻololi kino. Hoʻololi wale ke kūlana o ka mea i ka wā i wela ai, akā ʻaʻole loli ke ʻano. He kamaaina mau. No ka laʻana, ke hoʻoheheʻe ʻia ke kukui e ka wela, hiki ke hoʻihoʻi ʻia i ke kukui mua, akā ʻo ke ʻā ʻana o ke kukui he hoʻololi kemika.

1. Nā mea wela

Lilo a palupalu i ka wā i wela ai, a paʻakikī ke hoʻomāʻalili. Hiki ke hoʻohuli ʻia kēia kaʻina hana a hiki ke repeʻai ʻia. Polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyoxymethylene, polycarbonate, polyamide, acrylic plastic, other polyolefins and their copolymers, polysulfide, polyphenylene ether, chlorinated polyether, etc. He thermoplastic. ʻO nā kaulahao molekala resin i nā thermoplastics he laina laina a i ʻole lālā. ʻAʻohe paʻa kemika ma waena o nā kaulahao molekala, a palupalu lākou a kahe i ka wā i wela ai. ʻO ke kaʻina hana o ka hoʻomaha a me ka paʻakikī he hoʻololi kino.

2. ʻO nā plastic thermosetting

I ka manawa mua e wela ai, hiki ke palupalu a kahe. Ke hoʻomehana ʻia i kahi mahana, hiki mai ka hopena kemika e hoʻopaʻa ʻia a paʻa. ʻAʻole hiki ke hoʻohuli ʻia kēia hoʻololi. Ma hope o ia mea, ke wela hou, ʻaʻole hiki ke lilo i palupalu a kahe. Ma muli o kēia ʻano e hana ʻia ai ke kaʻina hana, a hoʻohana ʻia ke kahe plasticized i ka wā o ka hoʻomehana mua e hoʻopiha ai i ka lua ma lalo o ke kaomi, a laila paʻa i kahi huahana o kahi ʻano a me ka nui. Kapa ʻia kēia mea he thermoset.

ʻO ka resin o nā plastic thermosetting linear a i ʻole lālā ma mua o ka hoʻōla ʻana. Ma hope o ka ho'ōla ʻana, hoʻokumu ʻia nā paʻa kemika ma waena o nā kaulahao molekala e hana i kahi ʻano pūnaewele ʻekolu-dimensional. ʻAʻole hiki ke hoʻoheheʻe hou ʻia, akā ʻaʻole hiki ke hoʻoheheʻe ʻia i nā solvents. ʻO Phenolic, aldehyde, melamine formaldehyde, epoxy, unsaturated polyester, silicone a me nā plastics ʻē aʻe he plastic thermosetting.

Thermoplastic vs Thermoset