Nkọwa ọkwa ọkwa nke osisi mkpuchi mkpuchi epoxy

Epoxy resins na -ezo aka na ogige polymer nke nwere ihe abụọ ma ọ bụ karịa epoxy na molekul. Ewezuga ole na ole, ọnụ ọgụgụ molekul ha adịghị elu. A na -eji usoro ihe omimi nke epoxy resin mara otu epoxy na -arụ ọrụ na yinye molekụla. Ndị otu epoxy nwere ike ịnọ na njedebe, n’etiti ma ọ bụ na usoro okirikiri nke yinye molekụla. Ebe ọ bụ na ngwongwo molekụla nwere ndị otu epoxy na-arụ ọrụ, ha nwere ike nweta mmeghachi omume na-ejikọ ya na ụdị ndị na-agwọ ọrịa dị iche iche iji mepụta polymer na-enweghị ike ịgbari na enweghị usoro nwere usoro netwọkụ ụzọ atọ.

Njirimara ngwa nke bọọdụ mkpuchi epoxy resin

1. Ụdị dị iche iche. Resins dị iche iche, ndị na -agwọ ọrịa, na sistemụ mmegharị nwere ike ịhazigharị ihe achọrọ nke ngwa dị iche iche n’ụdị ahụ, yana oke nwere ike site na viscosity dị ala ruo ebe siri ike agbaze.

2. Ịgwọ ọrịa dị mma. Họrọ ndị ọrụ ọgwụgwọ dị iche iche dị iche iche, enwere ike ịgwọ sistemụ resin epoxy na oke okpomọkụ nke 0 ~ 180 ℃.

3. Nrapado siri ike. Groupstù hydroxyl polar dị n’ime ya na agbụ ether dị na ngwongwo molekul resin na -eme ka ọ na -arapara n’ihe dị iche iche. Mbelata nke resin epoxy dị ala mgbe a na -agwọ ya, nrụgide dị n’ime na -esite na ya pere mpe, nke na -enyekwa aka melite ike nrapado.

4. Mbelata dị ala. Mmeghachi omume n’etiti resin epoxy na onye na-ahụ maka ọgwụgwọ bụ nke a na-eme site na mmeghachi mgbakwunye ozugbo ma ọ bụ mmeghe mmeghe polymerization nke ndị otu epoxy na molekul resin, ọ nweghịkwa mmiri ma ọ bụ ngwaahịa ndị ọzọ na-agbanwe agbanwe. E jiri ya tụnyere resin polyester na -ejikọtabeghị na resin phenolic, ha na -egosi mbelata nke ukwuu (ihe na -erughị 2%) n’oge ịgwọ ọrịa.

5. Njirimara igwe. Usoro mmanụ resin epoxy gwọrọ nwere ezigbo ihe eji arụ ọrụ.

6. Ọrụ eletriki. Sistemụ resin epoxy a gwọrọ bụ ezigbo ihe mkpuchi ihe nwere nnukwu ihe ọkụ eletrik, nguzogide mgbapụta elu, na nguzo arc.

7. Chemical kwụsie ike. N’ozuzu, sistemụ resin epoxy gwọrọ nwere nguzogide alkali dị mma, nguzogide acid na nguzogide ihe mgbaze. Dị ka ihe ndị ọzọ nke sistemụ epoxy gwọrọ, nkwụsi ike kemịkalụ na -adaberekwa na resin na onye na -agwọ ọrịa. Nhọrọ dabara adaba nke resin epoxy na onye na -agwọ ọrịa nwere ike ime ka ọ nwee nkwụsi ike kemịkal pụrụ iche.

8. nkwụsi ike akụkụ. Ngwakọta nke ọtụtụ ihe ndị dị n’elu na -enye sistemụ epoxy resin pụtara nkwụsi ike na ịdịte aka.

9. Na -eguzogide ịkpụzi. Usoro resin epoxy a gwọrọ na -eguzogide ọtụtụ ebu na enwere ike iji ya na ọnọdụ okpomọkụ.

Ụdị nhazi ọkwa

Dabere na usoro molekul, enwere ike kewaa resin epoxy n’ime ụzọ ise:

1. Glycidyl ether epoxy resin

2. Glycidyl ester epoxy resin

3. Glycidylamine epoxy resin

4. Linear aliphatic epoxy resin

5. resin mmanụ alicyclic