Ngwa nke epoxy resin adhesives

Epoxy resin nrapado(nke a na-akpọ epoxy nrapado ma ọ bụ epoxy adhesive) pụtara site n'ihe dị ka 1950, naanị ihe karịrị afọ 50. Ma n'etiti narị afọ nke 20, echiche dị iche iche nke nrapado, yana kemịl na-edozi ahụ, rheology na-edozi ahụ na usoro mmebi ihe na-arụ ọrụ na-arụ ọrụ nyocha nke ọma, nke mere na ihe ntanye, ụdị dị iche iche na ngwa ngwa nwere ọganihu ngwa ngwa. Epoxy resin na usoro ọgwụgwọ ya nwere ihe pụrụ iche, ọmarịcha arụmọrụ yana resin epoxy ọhụrụ, onye na-agwọ ọrịa ọhụrụ na ihe mgbakwunye na-aga n'ihu na-apụta, na-aghọ klas nke adhesives dị mkpa nwere arụmọrụ dị mma, ọtụtụ ụdị, mgbanwe dị ukwuu.
Epoxy resin nrapado na mgbakwunye na ndị na-abụghị polar plastics dị ka polyolefin bonding adịghị mma, n'ihi na a dịgasị iche iche nke metal ihe dị ka aluminum, ígwè, ígwè, ọla kọpa: na-abụghị ọla ihe dị ka iko, osisi, ihe, wdg: nakwa dị ka thermosetting plastics dị ka phenolics, aminos, unsaturated polyester, wdg nwere magburu onwe nrapado nwere eluigwe na ala nrapado dị ka ihe nrapado mara mma e nwere ihe nrapado zuru ụwa ọnụ. Epoxy adhesive bụ ngwa nrapado dị arọ na-arụ ọrụ.
Nhazi site na ọgwụgwọ ọnọdụ
Nrapado na-agwọ oyi (enweghị ihe mkpuchi na-ekpo ọkụ). Kewaakwa na:

• Obere okpomọkụ ọgwụgwọ nrapado, ọgwụgwọ okpomọkụ <15 ℃;
• Ime ụlọ okpomọkụ na-agwọ nrapado, ọgwụgwọ okpomọkụ 15-40 ℃.
• Okpomọkụ na-agwọ nrapado. Enwere ike kewaa ọzọ na:
• Okpomọkụ na-agwọta nrapado na-ekpo ọkụ, na-agwọta okpomọkụ banyere 80-120 ℃;
• Akwa okpomọkụ na-agwọ nrapado, ọgwụgwọ okpomọkụ> 150 ℃.
• Ụzọ ndị ọzọ a na-esi agwọ nrapado, dị ka ntanye na-agwọ ọkụ, elu mmiri na mmiri na-agwọ nrapado, ihe nrapado na-eme ka ọ dị nro.

Epoxy adhesives nwere uru ndị a karịa ụdị nrapado ndị ọzọ:

1. Epoxy resinnwere ụdị polar dị iche iche na otu epoxy na-arụsi ọrụ ike, si otú a na-enwe ike nrapado siri ike na ihe dị iche iche nke polar dị ka ígwè, iko, ciment, osisi, plastik, wdg, karịsịa ndị nwere ọrụ elu dị elu, ma n'otu oge ahụ ike na-ejikọta ọnụ nke epoxy gwọrọ ihe dị oke ibu, ya mere ike nrapado ya dị oke elu.
2. Ọnweghị ngbanwe nke mkpụrụ ndụ dị ala na-emepụta mgbe a gwọrọ resin epoxy. Mbelata olu nke oyi akwa nrapado dị obere, ihe dị ka 1% ruo 2%, nke bụ otu n'ime ụdị dị iche iche nwere obere ọgwụgwọ na-ebelata na resins thermosetting. Mgbe ịgbakwunye filler nwere ike ibelata n'okpuru 0.2%. Ọnụ ọgụgụ nke mgbasawanye linear nke ihe a gwọrọ nke epoxy dịkwa ntakịrị. Ya mere, nrụgide dị n'ime ahụ dị ntakịrị, ma nwee mmetụta dị nta na ike njikọ. Tụkwasị na nke ahụ, ihe na-akpụ akpụ nke ihe a na-agwọ ọrịa epoxy dị ntakịrị, ya mere nkwụsi ike nke akụkụ nke akwa akwa akwa dị mma.
3. E nwere ọtụtụ ụdị epoxy resins, ndị na-agwọ ọrịa na ndị na-agbanwe agbanwe, nke nwere ike ịbụ nke ezi uche dị na ya na nkà ịmepụta ya iji mee ka nrapado na usoro achọrọ (dị ka ngwa ngwa ngwa ngwa, ọgwụgwọ okpomọkụ ụlọ, obere okpomọkụ na-agwọ ọrịa, ọgwụgwọ na mmiri, obere viscosity, elu viscosity, wdg), na na-achọrọ iji arụmọrụ (dị ka-iguzogide elu okpomọkụ, elu okpomọkụ, elu-mgbanwe ike, elu okpomọkụ, elu-mgbanwe nke okpomọkụ, dị elu-mmetụta okpomọkụ, elu-mgbanwe nke okpomọkụ, elu okpomọkụ, elu okpomọkụ, elu-mmetụta okpomọkụ, elu-mgbanwe nke okpomọkụ, elu okpomọkụ. iguzogide ịka nká, ihe na-eme ka ọkụ eletrik, ihe ndọta magnetik, ikuku okpomọkụ, wdg).
4. Na ihe dị iche iche nke organic (monomer, resin, roba) na inorganic bekee (dị ka fillers, wdg) nwere ezi ndakọrịta na reactivity, mfe copolymerization, crosslinking, ngwakọta, ndochi na ndị ọzọ mgbanwe iji melite arụmọrụ nke nrapado oyi akwa.
5. Ezigbo nguzogide corrosion na ihe dielectric. Na-eguzogide acid, alkali, nnu, ihe mgbaze na mmebi mgbasa ozi ndị ọzọ. Volume resistivity 1013-1016Ω-cm, dielectric ike 16-35kV/mm.
6. Nzube epoxy resins n'ozuzu, ndị na-agwọ ọrịa na ihe mgbakwunye nwere ọtụtụ mmalite, nnukwu mmepụta, dị mfe ịmepụta, nwere ike ịbụ kọntaktị nrụgide ịkpụzi, nwere ike tinye ya n'ọtụtụ buru ibu.

Otu esi ahọrọepoxy resin

Mgbe ị na-ahọrọ resin epoxy, enwere ọtụtụ ihe ị ga-atụle, gụnyere:

1. Jiri: Enwere ike iji epoxy maka ebumnuche izugbe ma ọ bụ ngwa ụlọ ọrụ karịa?
2. Ndụ na-arụ ọrụ: Ogologo oge ole ka ọ ga-adị mkpa iji epoxy tupu ịgwọ ọrịa?
3. Oge ọgwụgwọ: Ogologo oge ole ka ọ ga-ewe maka ngwaahịa ahụ iji gwọọ ma gwọọ ya nke ọma site na iji epoxy?
4. Okpomọkụ: Kedu okpomọkụ nke akụkụ ahụ ga-arụ ọrụ? Ọ bụrụ na njirimara a chọrọ, a nwalewo epoxy ahọpụtara maka oke okpomọkụ?

Njirimara:

• Ngwongwo thixotropic dị elu, enwere ike itinye ya na owuwu facade.
• Njirimara nchekwa gburugburu ebe obibi dị elu (usoro ọgwụgwọ na-enweghị ihe mgbaze).
• Mgbanwe dị elu.
• Ike njikọ dị elu.
• Igwe ọkụ eletrik dị elu.
• Magburu onwe n'ibu Njirimara.
• Ezigbo okpomọkụ na mmiri na-eguzogide.
• Nkwụsi ike nchekwa dị mma, oge nchekwa ruo 1 afọ.

Ngwa:Maka njikọta nke ọla dị iche iche na ndị na-abụghị ọla, dị ka magnet, alloys aluminum, sensọ, wdg.