Uburyo bwo gushushanya butuma umuriro utagira umuriro ukoreshwa mu gushushanya acrylic adhesive
Kugira ngo huzuzwe ibisabwa na UL94 V0 bigabanya umuriro ku bikoresho bya acrylic bikoresha thermosetting, hashingiwe ku miterere y'ibikoresho bigabanya umuriro bihari n'imiterere y'uburyo bwa thermosetting, hatanzwe uburyo bukurikira bwo kunoza no gusesengura ingenzi:
I. Amahame ngenderwaho yo gushushanya imiterere n'ibisabwa kuri sisitemu yo gushyiraho thermosetting
- Igomba kuba ihuye n'ubushyuhe bwo gushyuha (ubusanzwe 120–180°C)
- Ibintu bigabanya umuriro bigomba kwihanganira ubushyuhe bwinshi (kwirinda kubora kwangirika)
- Menya neza ko gukwirakwira kw'ibintu mu buryo burambye mu miyoboro miremire y'ubucucike
- Kuringaniza imbaraga za mekanike nyuma yo gukira no gukoresha neza umuriro mu gihe utarakira neza
II. Igishushanyo mbonera cya sisitemu igabanya umuriro
Imikorere igabanya umuriro no guhuza imiterere ya Thermoset
| Irinda umuriro | Uruhare rw'ibanze | Guhuza imiterere ya Thermoseti | Ibyemezo byo gupakira |
|---|---|---|---|
| ATH nziza cyane | FR Nkuru: Kubura amazi mu mubiri, gusohora umwuka mu gice cy'umwuka | Bisaba guhindura ubuso (kurwanya agglomeration) | ≤35% (gushyiramo ibintu byinshi bigabanya guhuza) |
| Hypophosfite ya aluminiyumu | Synergist: Char catalyst, radical scavenger (PO·) | Kuramo ubushyuhe >300°C, bibereye gukaraba | 8–12% |
| Borate ya zinki | Itera imbaraga ry'ibara ry'umukara: Ikora uruzitiro rusa n'ikirahure, igabanya umwotsi | Ikorana na ATH (Al-BO char) | 5–8% |
| MCA (Melamine cyanurate) | Gas-phase FR: Irekura NH₃, ikabuza gutwika | Kuramo ubushyuhe buri hagati ya 250–300°C (ubushyuhe bukomeza ubushyuhe buri hagati ya 250°C) | 3–5% |
III. Uburyo bwo gushushanya busabwa (Uburemere %)
Amabwiriza agenga itunganywa ry'ibice
| Igice | Igipimo | Inyandiko z'ingenzi zo gutunganya |
|---|---|---|
| Resin ya acrylic ya Thermoset | 45–50% | Ubwoko bw'ubushyuhe buke (urugero, epoxy acrylate) bwo gushyiramo ibyuma byinshi |
| ATH yahinduwe ku buso (D50 <5µm) | 25–30% | Yavuwe mbere na silane ya KH-550 |
| Hypophosfite ya aluminiyumu | 10–12% | Byavanzwe mbere na ATH, byongewemo mu byiciro |
| Borate ya zinki | 6–8% | Yongewe hamwe na MCA; irinde kwangirika cyane |
| MCA | 4–5% | Kuvanga mu buryo bworoshye kandi butihuta cyane (<250°C) |
| Gutatana (BYK-2152 + ibishashara bya PE) | 1.5–2% | Bituma imashini zikwirakwira neza |
| Umuhuza (KH-550) | 1% | Yavuwe mbere kuri ATH/hypophosphite |
| Umuti uvura indwara (BPO) | 1–2% | Akamaro k'ubushyuhe buke kugira ngo gakemuke vuba |
| Umuti urwanya indwara (Aerosil R202) | 0.5% | Kurwanya ubushyuhe bwa Thixotropiki |
IV. Igenzura ry'Ibikorwa by'Ingenzi
1. Uburyo bwo gukwirakwiza
- Mbere yo kuvurwa: ATH na hypophosphite byinjijwe mu gipimo cya 5% KH-550/ethanol (amasaha 2, 80°C byumutse)
- Urukurikirane rw'ibivangwa:
- Resin + dispersant → Kuvanga vuba vuba → Ongeraho ATH/hypophosphite yahinduwe → Gutambuka vuba cyane (2500 rpm, iminota 20) → Ongeraho zinc borate/MCA → Kuvanga vuba cyane (wirinde kwangirika kwa MCA)
- Ibikoresho: Imashini ivanga imibumbe (vacuum degassing) cyangwa imashini ikora imigozi itatu (ikoreshwa mu ifu nziza cyane)
2. Gutunganya neza uburyo bwo kuvura
- Intambwe yo gukaraba: 80°C/isaha 1 (mbere yo gukaraba) → 140°C/isaha 2 (nyuma yo gukaraba, wirinde kubora kwa MCA)
- Kugenzura umuvuduko: 0.5–1 MPa kugira ngo wirinde ko filler ihagarara
3. Uburyo bwo guhuza ibikorwa
- ATH + Hypophosphite: Ikora char ishyigikiwe na AlPO₄ mugihe ikuraho radicals (PO·)
- Zinc borate + MCA: Ingufu ebyiri zikomeye zirinda gazi (NH₃ dilution + urwego rw'ikirahure rushongeshejwe)
V. Ingamba zo Gutunganya Imikorere
Ibibazo Bisanzwe n'Ibisubizo
| Ikibazo | Impamvu nyamukuru | Umuti |
|---|---|---|
| Gushyushya amazi | Ubushyuhe buke bwo gushonga | Ongera MCA kuri 5% + hypophosphite kuri 12%, cyangwa ongeramo 0.5% ya PTFE micropowder |
| Uburibwe nyuma yo gukira | Umutwaro ukabije wa ATH | Gabanya ATH kuri 25% + 5% nano-CaCO₃ (gukomeza) |
| Ububiko bw'ibitaka | thixotropie mbi | Ongera silica kuri 0.8% cyangwa uhindure kuri BYK-410 |
| LOI <28% | FR idahagije yo gukoresha gazi | Ongeraho fosifore itukura ya 2% cyangwa 1% nano-BN |
VI. Ibipimo byo kwemeza
- UL94 V0: Ingero za mm 3.2, igihe cyose cy'umuriro kiri munsi ya s 50 (nta gutwika ipamba)
- LOI ≥30% (umubare ntarengwa w'umutekano)
- Ibisigisigi bya TGA> 25% (800 ° C, N₂)
- Ingano ya mekanike: Ingufu zo gukurura >8 MPa, imbaraga zo gukata >6 MPa
Ibintu by'ingenzi byakunzwe
- Agera ku manota ya V0 ariko agakomeza ubuziranenge bwa mekanike.
- Igeragezwa rito (50g) risabwa mbere yo gupima.
- Kugira ngo habeho umusaruro mwiza, hashobora kongerwamo 2–3% by'ibikomoka kuri DOPO (urugero, fosfaphenanthrene).
Iyi gahunda igenzura iyubahirizwa ry’amahame akaze agenga umuriro mu gihe irushaho kunoza uburyo bwo gutunganya no gukoresha neza ibikoresho.
Igihe cyo kohereza: Nyakanga-01-2025
