Itusilẹ ati Ilana Pipin ti Awọn Idaduro Ina Idaduro ni Polyurethane AB Adhesive System

Itusilẹ ati Ilana Pipin ti Awọn Idaduro Ina Idaduro ni Polyurethane AB Adhesive System

Fun itu / pipinka ti awọn idaduro ina ti o lagbara gẹgẹbi aluminiomu hypophosphite (AHP), aluminiomu hydroxide (ATH), zinc borate, ati melamine cyanurate (MCA) ninu eto alemora polyurethane AB, awọn igbesẹ bọtini jẹ pretreatment, pipinka stepwise, ati iṣakoso ọrinrin to muna. Ni isalẹ ni ilana alaye (fun awọn ilana imuduro ina-giga; awọn agbekalẹ miiran le ṣe atunṣe ni ibamu).

I. Awọn Ilana pataki

1. “Itu” jẹ pipinka ni pataki: Awọn idapada ina ti o lagbara gbọdọ wa ni tuka ni iṣọkan ni polyol (A-paati) lati ṣe idadoro iduro.
2. Itoju ti awọn idaduro ina: koju awọn ọran ti gbigba ọrinrin, agglomeration, ati ifaseyin pẹlu isocyanates.
3. Afikun Igbesẹ: Ṣafikun awọn ohun elo ni aṣẹ iwuwo ati iwọn patiku lati yago fun awọn ifọkansi giga agbegbe.
4. Iṣakoso ọrinrin ti o muna: Omi n gba isocyanate (-NCO) ninu ẹya-ara B, ti o yori si imularada ti ko dara.

II. Ilana Iṣiṣẹ ni kikun (Da lori awọn ẹya 100 polyol ni paati A)

Igbesẹ 1: Itọju Itọju Ina (wakati 24 ṣaaju)

• Aluminiomu Hypophosphite (AHP, awọn ẹya 10):
  • Iboju oju pẹlu aṣoju silane silane (KH-550) tabi oluranlowo idapọ titanate (NDZ-201):
    • Illa 0,5 awọn ẹya ara ẹrọ idapọmọra + 2 awọn ẹya anhydrous ethanol, aruwo fun 10 min fun hydrolysis.
    • Fi AHP lulú ati aruwo ni iyara giga (1000 rpm) fun iṣẹju 20.
    • Gbẹ ninu adiro ni 80 ° C fun wakati 2, lẹhinna tọju edidi.
• Aluminiomu Hydroxide (ATH, awọn ẹya 25):
  • Lo iwọn submicron, ATH ti a ṣe atunṣe silane (fun apẹẹrẹ, Wandu WD-WF-20). Ti ko ba yipada, tọju bakanna si AHP.
• MCA (awọn ẹya 6) & Zinc Borate (awọn ẹya mẹrin):
  • Gbẹ ni 60 ° C fun wakati 4 lati yọ ọrinrin kuro, lẹhinna ṣabọ nipasẹ iboju 300-mesh.

Igbesẹ 2: A-papapọ (Polyol Side) Ilana pipinka

1. Idapọ ipilẹ:
   • Ṣafikun awọn ẹya 100 polyol (fun apẹẹrẹ, polyether polyol PPG) si apo gbigbe kan.
   • Ṣafikun awọn ẹya 0.3 polyether-atunṣe aṣoju ipele polysiloxane (fun apẹẹrẹ, BYK-333).
2. Pipin-Iyara Kekere:
   • Fi awọn idaduro ina kun ni ibere: ATH (awọn ẹya 25) → AHP (awọn ẹya 10) → borate zinc (awọn ẹya 4) → MCA (awọn ẹya 6).
   • Aruwo ni 300-500 rpm fun 10 min titi ti ko si gbẹ lulú ku.
3. Pipin-irẹ-giga:
   • Yipada si kaakiri iyara giga (≥1500 rpm) fun awọn iṣẹju 30.
   • Iṣakoso otutu ≤50°C (lati dena ifoyina polyol).
4. Lilọ & Isọdọtun (Lominu!):
   • Ṣe nipasẹ ọlọ-yipo mẹta tabi agbọn iyanrin ọlọ ni igba 2-3 titi ti o dara ≤30μm (idanwo nipasẹ iwọn Hegman).
5. Atunse Viscosity & Defoaming:
   • Ṣafikun awọn ẹya 0.5 hydrophobic fumed silica (Aerosil R202) lati yago fun gbigbe.
   • Ṣafikun awọn ẹya 0.2 silikoni defoamer (fun apẹẹrẹ, Tego Airex 900).
   • Aruwo ni 200 rpm fun 15 min fun degassing.

Igbesẹ 3: Itọju B-Component (Side Isocyanate).

• Ṣafikun awọn ẹya 4-6 sive molikula (fun apẹẹrẹ, Zeochem 3A) si paati B (fun apẹẹrẹ, MDI prepolymer) fun gbigba ọrinrin.
• Ti o ba nlo awọn idaduro ina irawọ owurọ olomi (aṣayan iki-kekere), dapọ taara sinu paati B ki o ru fun iṣẹju 10.

Igbesẹ 4: Dapọ paati AB & Itọju

• Ipin idapọ: Tẹle apẹrẹ alemora AB atilẹba (fun apẹẹrẹ, A: B = 100:50).
• Ilana idapọ:
  • Lo alapọpo aye-aye meji-paati tabi tube dapọ aimi.
  • Illa fun awọn iṣẹju 2-3 titi di aṣọ (ko si okun).
• Awọn ipo imularada:
  • Itọju iwọn otutu yara: awọn wakati 24 (ti o gbooro nipasẹ 30% nitori imuduro ooru ti ina).
  • Itọju iyara: 60°C/2 wakati (ṣeduro fun awọn abajade ti ko ni kuku).

III. Key Ilana Iṣakoso Points

IV. Awọn ọna Pipin Yiyan (Laisi Ohun elo Lilọ)

1. Ìtọ́jú ọ̀tọ̀ọ̀tọ̀ ọlọ́rọ̀:
   • Illa ina retardants ati polyol ni 1: 1 ratio, rogodo ọlọ fun 4 wakati (zirconia balls, 2mm iwọn).
2. Ọna Masterbatch:
   • Mura 50% ina retardant masterbatch (polyol bi ti ngbe), lẹhinna dilute ṣaaju lilo.
3. Ultrasonic pipinka:
   • Waye ultrasonication (20kHz, 500W, 10 min) si slurry premixed (o dara fun awọn ipele kekere).

V. Awọn iṣeduro imuse

1. Idanwo iwọn-kekere akọkọ: Idanwo pẹlu 100g ti A-paati, fojusi lori iduroṣinṣin viscosity (24h iyipada <10%) ati iyara imularada.
2. Ofin itọsẹ afikun imuduro ina:
   • "Eru akọkọ, ina nigbamii; itanran akọkọ, isokuso nigbamii" → ATH (eru) → AHP (itanran) → borate zinc (alabọde) → MCA (ina / isokuso).
3. Laasigbotitusita pajawiri:
   • Ilọsi viscosity lojiji: Fi 0.5% propylene glycol methyl ether acetate (PMA) kun lati dilute.
   • Itọju ailera: Ṣafikun 5% ti a tunṣe MDI (fun apẹẹrẹ, Wanhua PM-200) si paati B.