Tlhahlobo le Ntlafatso ea Sebopeho sa Flame-Retardant bakeng sa Liaparo tsa PVC
Moreki o etsa litente tsa PVC 'me o hloka ho kenya lesela le thibelang mollo. Foromo ea hajoale e na le likarolo tse 60 tsa resin ea PVC, likarolo tse 40 tsa TOTM, likarolo tse 30 tsa aluminium hypophosphite (e nang le 40% ea phosphorus), likarolo tse 10 tsa MCA, likarolo tse 8 tsa zinc borate, hammoho le li-dispersants. Leha ho le joalo, ts'ebetso e thibelang lelakabe e fokola, 'me ho hasana ha li-flame retardants le hona ha hoa lekana. Ka tlase ke tlhahlobo ea mabaka le tokiso e sisintsoeng ea foromo.
I. Mabaka a Konokono a ho Fokotsa Lelakabe le Lefutsana
1. Sistimi e sa leka-lekaneng ea Flame Retardant e nang le Liphello tse fokolang tsa Synergistic
- Aluminium hypophosphite e feteletseng (likarolo tse 30):
Leha aluminium hypophosphite e sebetsa hantle ka phosphorus-based flame retardant (40% phosphorus content), tlatsetso e feteletseng (>25 likarolo) e ka lebisa ho: - Keketseho e matla ea viscosity ea sistimi, e etsang hore ho be thata ho qhalakana le ho theha libaka tse nang le li-hotspots tse potlakisang ho chesa ("wick effect").
- E fokotsehile ho tiea ha thepa le thepa e sa sebetseng ea ho etsa lifilimi ka lebaka la li-inorganic filler tse ngata.
- Litaba tse phahameng tsa MCA (likarolo tse 10):
MCA (nitrogen-based) hangata e sebelisoa joalo ka synergist. Ha tekanyo e feta likarolo tse 5, e atisa ho falla holimo, e tlatsa bokhoni bo thibelang malakabe 'me e ka kena-kenana le tse ling tse thibelang malakabe. - Ho haella ha li-synergists tsa bohlokoa:
Le hoja zinc borate e na le liphello tse thibelang mosi, ho ba sieo ha antimony-based (mohlala, antimony trioxide) kapa metal oxide (mohlala, aluminium hydroxide) metsoako e thibela ho thehoa ha "phosphorus-nitrogen-antimony" synergistic system, e leng se bakang khase e sa lekaneng ea khase ea khase.
2. Phapang Pakeng Tsa Khetho ea Plasticizer le Lipakane tsa ho Fokotsa Lelakabe
- TOTM (trioctyl trimellitate) e na le ho lieha ha lelakabe ho lekanyelitsoeng:
TOTM e sebetsa hantle haholo tabeng ya ho hanyetsa mocheso empa ha e sebetse hantle haholo kgabong ya kgabo ha e bapisoa le phosphate ester (mohlala, TOTP). Bakeng sa lisebelisoa tse phahameng tse thibelang lelakabe joalo ka litente tsa litente, TOTM ha e khone ho fana ka bokhoni bo lekaneng ba ho tjhaja le ho thibela oksijene. - Plastiki e sa lekaneng (likarolo tse 40 feela):
Resin ea PVC hangata e hloka likarolo tse 60-75 tsa polasetiki bakeng sa polasetiki e felletseng. Likahare tse tlase tsa polasetiki li lebisa ho viscosity e phahameng ea ho qhibiliha, e leng ho mpefatsang litaba tsa khaso e thibelang malakabe.
3. Mokhoa o sa sebetseng oa Phatlalatso o Isang Phalong e sa Lekaneng ea Lelakabe la Retardant
- Sehlahisoa sa hona joale e kanna ea ba sa sepheo se akaretsang (mohlala, asiti ea stearic kapa boka ba PE), e sa sebetseng bakeng sa li-inorganic flame retardants (aluminium hypophosphite + zinc borate ea likarolo tse 48), e bakang:
- Agglomeration ea lelakabe retardant likaroloana, ho bōpa localized fokola matheba a barbotage.
- Phallo e mpe ea ho qhibiliha nakong ea ts'ebetso, e hlahisang mocheso oa shear o bakang ho bola pele ho nako.
4. Tšebelisano e Fosahetseng Pakeng tsa Li-Flame Retardants le PVC
- Lisebelisoa tsa inorganic joalo ka aluminium hypophosphite le zinki borate li na le phapang e kholo ea polarity le PVC. Ntle le phetoho ea holim'a metsi (mohlala, li-silane coupling agents), karohano ea mekhahlelo e etsahala, ho fokotsa katleho e thibelang mollo.
II. Mokhoa oa Moralo oa Core
1. Tlohela Plasticizer ea mantlha ka TOTP
- E sebelisa matla a eona a ho lieha ha malakabe a ka hare (liteng tsa phosphorus ≈9%) le phello ea polasetiki.
2. Optimize Flame Retardant Ratios le Synergy
- Boloka aluminium hypophosphite e le mohloli oa mantlha oa phosphorus empa e fokotsa haholo litekanyetso tsa eona ho ntlafatsa ho hasana le ho fokotsa "phello ea lebone."
- Boloka zinki borate joalo ka synergist ea bohlokoa (ho khothaletsa ho charring le khatello ea mosi).
- Boloka MCA e le nitrogen synergist empa fokotsa tekanyo ea eona ho thibela ho falla.
- Tsebisaultrafine aluminium hydroxide (ATH)joalo ka karolo ea multifunctional:
- Ho lieha ha lelakabe:Endothermic decomposition (dehydration), ho pholisa, le ho hlapolloa ha likhase tse tukang.
- Khatello ea ho tsuba:E fokotsa haholo tlhahiso ea mosi.
- Setlatsi:Ho fokotsa litšenyehelo (ha ho bapisoa le li-flame retardants tse ling).
- Phallo e ntlafetseng le phallo (matla a holimo):Ho bonolo ho hasana ho feta ATH e tloaelehileng, ho fokotsa ho eketseha ha viscosity.
3. Tharollo e Matla Bakeng sa Mathata a Phatlalatso
- Eketsa haholo litaba tsa polasetiki:Netefatsa polasetiki e felletseng ea PVC le ho fokotsa viscosity ea sistimi.
- Sebelisa li-super-dispersants tse sebetsang hantle haholo:E etselitsoe ka ho khetheha bakeng sa li-powder tse ngata, tse kopantsoeng habonolo (aluminium hypophosphite, ATH).
- Ntlafatsa ts'ebetso (ho kopanya pele ho bohlokoa):Etsa bonnete ba ho koloba ka botlalo le ho hasana ha li-flame retardants.
4. Netefatsa Botsitso ba Motheo oa Ts'ebetso
- Kenya li-stabilizer tse lekaneng tsa mocheso le lisebelisoa tse loketseng.
III. Foromo e ntlafalitsoeng ea Flame-Retardant PVC
| Karolo | Mofuta/Mosebetsi | Likarolo tse khothalelitsoeng | Lintlha / Lintlha tsa Ntlafatso |
| Resin ea PVC | Resin ea motheo | 100 | - |
| TOP | Plasticizer ea mantlha e thibelang mollo (Mohloli oa P) | 65–75 | Phetoho e kholo!E fana ka ts'ebetso e ntle ea lelakabe ea kahare le polasetiki ea bohlokoa. Tekanyo e phahameng e netefatsa ho fokotseha ha viscosity. |
| Hypophosphite ea aluminium | Mohloli oa mantlha oa phosphorus retardant (mohloli oa asiti) | 15–20 | Tekanyo e fokotsehile haholo!E boloka karolo ea mantlha ea phosphorus ha e ntse e nolofatsa litaba tsa viscosity le phallo. |
| ATH e phahameng ka ho fetisisa | Setlala se thibelang mollo/se hatellang mosi/endothermic agent | 25–35 | Keketso ea bohlokoa!Khetha limaraka tsa ultrafine (D50=1–2µm), tse entsoeng ka holimo (mohlala, silane). E fana ka pholileng, khatello ea mosi, le ho tlatsa. E hloka ho hasana ho matla. |
| Zinc borate | Synergist/mohatelli oa mosi/motlatsi oa char | 8–12 | E bolokiloe. E sebetsa le P le Al ho ntlafatsa ho charring le khatello ea mosi. |
| MCA | Nitrogen synergist (mohloli oa khase) | 4–6 | Tekanyo e fokotsehile haholo!E sebelisoa feela e le mohloli o thusang oa naetrojene ho qoba ho falla. |
| Super-dispersant e sebetsang hantle haholo | Keketso e hlokolosi | 3.0–4.0 | E khothalelitsoe: polyester, polyurethane, kapa mefuta ea polyacrylate e fetotsoeng (mohlala, BYK-163, TEGO Dispers 655, Efka 4010, kapa SP-1082 ea malapeng). Tekanyo e lokela ho lekana! |
| Mocheso o tsitsitseng | E thibela ho senyeha nakong ea ts'ebetso | 3.0–5.0 | Khothaletsa li-stabilizer tse sebetsang hantle haholo tsa Ca/Zn (eco-friendly). Fetola litekanyetso ho latela ts'ebetso le mocheso oa ts'ebetso. |
| Lubricant (ea ka hare/ka ntle) | E ntlafatsa phallo ea ts'ebetso, e thibela ho khomarela | 1.0–2.0 | Motsoako o sisintsoeng: |
| Li-additives tse ling (mohlala, antioxidants, UV stabilizers) | Joalo ka ha ho hlokahala | - | Bakeng sa ts'ebeliso ea litente tsa kantle, khothaletsa ka matla li-stabilizer tsa UV (mohlala, benzotriazole, likarolo tse 1-2) le li-antioxidants (mohlala, 1010, 0.3-0.5 likarolo). |
IV. Lintlha tsa Foromo le Lintlha tsa Bohlokoa
1. TOTP ke Motheo oa Motheo
- 65-75 likaroloe netefatsa:
- Plastiki e felletseng: PVC e hloka polasetiki e lekaneng bakeng sa ho etsa filimi e bonolo, e tsoelang pele.
- Phokotso ea Viscosity: E bohlokoa bakeng sa ho ntlafatsa ho hasana ha li-inorganic flame retardants tse boima.
- Intrinsic flame retadancy: TOTP ka boeona ke polasetiki e sebetsang hantle haholo e thibelang mollo.
2. Lelakabe Retardant Synergy
- PNB-Al Synergy:Aluminium hypophosphite (P) + MCA (N) e fana ka synergy ea motheo ea PN. Zinc borate (B, Zn) e matlafatsa ho charring le khatello ea mosi. Ultrafine ATH (Al) e fana ka pholiso e kholo ea endothermic le khatello ea mosi. TOTP e boetse e kenya letsoho phosphorus. Sena se theha sistimi ea synergistic ea likarolo tse ngata.
- Karolo ea ATH:Likarolo tse 25 ho isa ho tse 35 tsa ultrafine ATH ke karolo e kholo ho fokotseng malakabe le khatello ea mosi. Ho bola ha eona qetellong ea mocheso ho monya mocheso, ha mouoane o tsoang metsing o hlapolla oksijene le likhase tse tukang.Ultrafine le ATH e alafshoang holimo e bohlokoaho fokotsa tšusumetso ea viscosity le ho ntlafatsa tšebelisano ea PVC.
- Aluminium hypophosphite e fokotsehileng:E theotsoe ho tloha ho likarolo tse 30 ho isa ho tse 15-20 ho nolofatsa moroalo oa sistimi ha o ntse o boloka tlatsetso ea phosphorus.
- MCA e fokotsehileng:Ho theola likarolo tse 10 ho isa ho tse 4-6 ho thibela ho falla.
3. Tharollo ea Phatlalatso - E Bohlokoa Bakeng sa Katleho
- Super-dispersant (likarolo tse 3-4):E bohlokoa bakeng sa ho sebetsana le mojaro o phahameng (likarolo tsa 50-70 kakaretso ea li-inorganic fillers!), Sistimi e thata ho hasanya (aluminium hypophosphite + ultrafine ATH + zinc borate).Li-disperants tse tloaelehileng (mohlala, calcium stearate, boka ba PE) ha lia lekana!Tsetela ho li-super-dispersants tse sebetsang hantle haholo 'me u sebelise chelete e lekaneng.
- Likahare tsa polasetiki (likarolo tse 65-75):Joalo ka holimo, ho fokotsa viscosity ka kakaretso, ho theha tikoloho e ntle bakeng sa ho hasana.
- Lisebelisoa (likarolo tse 1-2):Motsoako oa mafura a ka hare / a ka ntle a etsa bonnete ba hore phallo e ntle nakong ea ho kopanya le ho roala, ho thibela ho khomarela.
4. Ho sebetsa - Protocol e tiileng ea ho kopanya pele ho nako
- Mohato oa 1 (Omisa motsoako oa li-inorganic powders):
- Eketsa aluminium hypophosphite, ultrafine ATH, zinki borate, MCA, le li-super-dispersant ho motsoako oa lebelo le phahameng.
- Kopanya ka 80-90 ° C bakeng sa metsotso e 8-10. Sepheo: Etsa bonnete ba hore li-super-dispersant li koahela ka botlalo karoloana e 'ngoe le e' ngoe, ho senya li-agglomerate.Nako le mocheso li bohlokoa!
- Mohato oa 2 (Sebopeho sa Slurry):
- Kenya boholo ba TOTP (mohlala, 70–80%), li-stabilizers tsohle tsa mocheso, le mafura a ka hare ho motsoako ho tloha Mohato oa Pele.
- Kopanya ka 90-100 ° C bakeng sa metsotso e 5-7 ho etsa seaparo se ts'oanang, se phallang se thibelang mollo. Etsa bonnete ba hore li-powders li kolobisitsoe ka botlalo ke li-plasticizers.
- Mohato oa 3 (Eketsa PVC le likarolo tse setseng):
- Eketsa resin ea PVC, TOTP e setseng, lisebelisoa tsa kantle (le li-antioxidant / UV stabilizers, haeba li eketsoa mothating ona).
- Kopanya ka 100-110 ° C bakeng sa metsotso e 7-10 ho fihlela u fihla "ntlha e omileng" (e phallang mahala, e se nang li-clumps).Qoba ho kopanya ho feteletseng ho thibela ho senyeha ha PVC.
- Ho pholisa:Lahla 'me u pholisoe motsoako ho fihlela ho <50°C ho thibela ho kokota.
5. Ts'ebetso e latelang
- Sebelisa motsoako o pholileng o omileng bakeng sa ho boloka kapa ho roala.
- Laola mocheso oa ho sebetsa ka thata (mocheso o khothalelitsoeng oa ho qhibiliha ≤170-175 ° C) ho qoba ho hloleha ha botsitso kapa ho bola pele ho nako ea li-flame retardants (mohlala, ATH).
V. Liphetho tse Lebeletsoeng le Litlhokomelo
- Ho lieha ha lelakabe:Ha ho bapisoa le mokhoa oa pele (TOTM + high aluminium hypophosphite / MCA), mokhoa ona o ntlafalitsoeng (TOTP + optimized P / N / B / Al ratios) o lokela ho ntlafatsa haholo ho lieha ha lelakabe, haholo-holo ts'ebetsong ea ho chesa e otlolohileng le khatello ea mosi. Litekanyetso tse reriloeng joalo ka CPAI-84 bakeng sa litente. Liteko tsa bohlokoa: ASTM D6413 (cheso e otlolohileng).
- Phatlalatso:Super-dispersant + high plasticizer + optimized pre-mixing e lokela ho ntlafatsa haholo ho hasana, ho fokotsa agglomeration le ho ntlafatsa ho tšoana ha liphahlo.
- Tshebetso:TOTP le mafura a lekaneng a lokela ho netefatsa ts'ebetso e bonolo, empa a hlokomele viscosity le ho khomarela nakong ea tlhahiso ea sebele.
- Litšenyehelo:TOTP le li-super-dispersants li theko e boima, empa li fokotsehile aluminium hypophosphite le MCA li fokotsa litšenyehelo tse ling. ATH e batla e le theko e tlase.
Likhopotso tsa Bohlokoa:
- Liteko tse nyane pele!Etsa liteko ka laboratoring 'me u itokise ho ipapisitse le lisebelisoa tsa' nete (haholo-holo ATH le ts'ebetso ea super-dispersant) le lisebelisoa.
- Khetho ea thepa:
- ATH:E tlameha ho sebelisa limaraka tsa ultrafine (D50 ≤2µm), tse entsoeng ka holimo (mohlala, silane). Ikopanye le bafani ba thepa bakeng sa likhothaletso tse lumellanang le PVC.
- Li-Super-dispersants:Hoa hlokahala ho sebelisa mefuta e sa tšoaneng. Tsebisa barekisi ka kopo (PVC, li-inorganic fillers tse boima bo phahameng, ho lieha ha lelakabe la halogen ntle le halogen).
- TOTP:Netefatsa boleng ba boleng bo holimo.
- Teko:Etsa liteko tse matla tsa ho lieha ho sebetsa ho latela maemo a reriloeng. Hape hlahloba botsofali / ho hanyetsa metsi (ho bohlokoa bakeng sa litente tsa ka ntle!). Li-stabilizer tsa UV le li-antioxidants li bohlokoa.
More info., pls contact lucy@taifeng-fr.com
Nako ea poso: Jul-25-2025
