Kedu ihe bụ resin thermosetting?
Thermosetting resin ma ọ bụ resin thermosetting bụ polymer nke a na-agwọ ma ọ bụ mee ka ọ bụrụ ọdịdị siri ike site na iji ụzọ ọgwụgwọ dị ka ikpo ọkụ ma ọ bụ radieshon.Usoro ọgwụgwọ bụ usoro a na-apụghị ịgbagha agbagha.Ọ na-agafe netwọk polymer site na njikọ kemịkalụ covalent.
Mgbe kpochara, ihe na-ekpo ọkụ na-anọgide na-esi ike ruo mgbe okpomọkụ na-erute okpomọkụ nke ọ na-amalite ịdaba.Usoro a dị iche na nke plastik thermoplastic.Ọtụtụ ihe atụ nke resin thermosetting bụ:
phenolic resin
- Amino resin
- Polyester resin
- Silicone resin
- Epoxy resin, na
- Polyurethane resin
N'ime ha, resin epoxy ma ọ bụ resin phenolic bụ otu n'ime resins na-ekpo ọkụ na-emekarị.N'oge a, a na-eji ha eme ihe n'ụdị ihe nhazi na ihe pụrụ iche.N'ihi ike ha dị elu na isi ike (n'ihi na ha na-ejikọta elu ha), ha fọrọ nke nta ka ọ bụrụ ngwa ọ bụla.
Gịnị bụ isi ụdị nke epoxy resins eji na ihe mejupụtara?
Ụdị isi atọ nke epoxy resins eji na ngwa ihe mejupụtara bụ:
- Phenolic aldehyde glycidyl ether
- Aromatic glycidyl amin
- Ngwakọta aliphatic cyclic
Kedu ihe bụ isi njirimara nke resin epoxy?
Anyị edepụtala ihe ndị dị mkpa nke resin epoxy nyere.
- Ike dị elu
- Ọnụọgụ mbelata dị ala
- Nwere ezigbo adhesion na substrates dị iche iche
- Ihe mkpuchi ọkụ eletrik dị irè
- Nguzogide kemịkalụ na ihe mgbaze, yana
- Ọnụ ala na obere nsi
Epoxy resins dị mfe ịgwọ ọrịa yana dakọtara na ọtụtụ mkpụrụ.Ha dị mfe mmiri mmiri n'elu ma dabara adaba maka ngwa ihe mejupụtara.A na-ejikwa resin epoxy iji gbanwee ọtụtụ polymers, dị ka polyurethane ma ọ bụ polyester na-adịghị mma.Ha na-abawanye uru anụ ahụ na kemịkal ha.Maka resin epoxy na-ekpo ọkụ:
- Ogologo ike ike dị site na 90 ruo 120MPa
- Oke nke modul tensile bụ 3100 ruo 3800MPa
- Okpomọkụ mgbanwe iko (Tg) bụ 150 ruo 220 Celsius
Epoxy resin nwere isi ihe ndọghachi azụ abụọ, ya bụ brittleness ya na mmetụta mmiri.
Oge nzipu: Jan-29-2024
