Tlhahiso ea Litšupiso ea PVC Flame Retardant Masterbatch
Moralo le ntlafatso ea mekhoa ea PVC ea masterbatch e thibelang malakabe, e kenyelletsang li-retardants tse teng tsa malakabe le likarolo tsa bohlokoa tsa tšebelisano-'moho, e shebaneng le ho thibela malakabe ha UL94 V0 (e ka fetoloang ho V2 ka ho fokotsa bongata ba litlatsetso).
I. Khothaletso ea Foromo ea Motheo (PVC e Tiileng)
Sebopeho sa Polasitiki se Sitisang Mollo:
| Karolo | Ho kenya (boima%) | Tlhaloso ea Mosebetsi |
|---|---|---|
| Resin ea PVC (mofuta oa SG-5) | 40-50% | Thepa ea matrix, haholo-holo tekanyo e tlase ea ho monya oli |
| Hypophosphate ea aluminium | 12-15% | Mohloli oa asiti bakeng sa ho thehoa ha char, o thibela khanya e latelang |
| Borate ea zinki | 8-10% | Ho thibela mosi ka kopanelo, ho arabela le HCl ho tsoa ho bola ha PVC |
| Aluminium hydroxide e fetotsoeng holim'a metsi | 10-12% | Ho phodisa ha endothermic, ho hloka sekwahelo sa silane coupling agent (mocheso wa ho bola o tsamaellana le ts'ebetso ya PVC) |
| Antimony trioxide (Sb₂O₃) | 3-5% | Sesebediswa sa mantlha sa ho kopanya matla, se eketsa ho thibela malakabe ka ho sebedisana ha Cl-Sb |
| Zinc molybdate (sethibela-mosi) | 5-8% | Setlatsetso se khothaletsoang, se fokotsa bongata ba mosi (senotlolo sa ho latela melao ea DIN 4102) |
| Dipentaerythritol (DPE) | 2-3% | Thuso ea ho theha char, e ntlafatsa taolo ea ho qhibiliha ha marotholi |
| Sehatsetsi sa mocheso (se kopantsoeng sa Ca-Zn) | 3-4% | Ho bohlokoa ho thibela ho senyeha ha mocheso nakong ea ts'ebetso |
| Setlolo sa polasetiki (DOP kapa se seng sa tikoloho) | 0-8% | Lokisa bakeng sa ho thatafala (ha ho hlokahale bakeng sa PVC e thata) |
| Setlolo (calcium stearate) | 1-1.5% | E ntlafatsa ts'ebetso, e thibela ho khomarela ha roller |
| Thuso ea ho sebetsana le ts'ebetso (ACR) | 1-2% | E ntlafatsa ho polastiki le ho hasana ha masterbatch |
II. Melao-motheo ea Bohlokoa ea Ntlafatso
- Sistimi ea Tšebelisano-'moho e Sireletsang Mollo
- Tšebelisano-'moho ea Cl-Sb: Chlorine ea tlhaho ea PVC (56%) e kopantsoeng le 3-5% Sb₂O₃ e etsa mokoallo oa SbCl₃, o nolofalletsang ho lieha ha lelakabe la mohato oa khase/mokhahlelo o kobehileng.
- Ho Thibela Mosi: Zinc molybdate + zinc borate e fokotsa bongata ba mosi ka >40% (ASTM E662).
- Ntlafatso ea Char: Aluminium hypophosphite + DPE e hlahisa cross-linked phosphoric ester char ho 200–250°C, e leng se lefellang khaello ea char ea PVC ea mohato oa pele.
- Ho Sebetsa ho Ikamahanya le Maemo
- Ho Bapisa Mocheso: Aluminium hypophosphite (ho bola ha ≥250°C) le Al(OH)₃ e fetotsoeng holim'a metsi (e tsitsitseng ho isa ho >200°C) e lumellana le ts'ebetso ea PVC (160–190°C).
- Netefatso ea Botsitso: Li-stabilizer tsa Ca-Zn li thibela ho senyeha ha resin ho tsoa ho HCl; ACR e thusa ho etsa plaster ka har'a litsamaiso tse tlatsang ka bongata.
- Tekanyo ea Tshebetso
- Kakaretso ea mojaro o thibelang malakabe: 35–45%, ho boloka matla a ho thapolla ≥80% (e tloaelehileng ≥40 MPa bakeng sa PVC e tiileng).
- Bakeng sa ho tenyetseha (PVC e tenyetsehang), nkela DOP sebaka ka oli ea soya ea 8% e nang le epoxidized (e nang le plasticizer e habeli/e thibelang malakabe).
III. Litekanyo tsa Teko le Netefatso
Ho Thibela Lelakabe:
- UL94 V0 (botenya ba 1.6 mm)
- Tekanyo ea Oksijene e Lekanyetsang (LOI) ≥32%
Taolo ea Mosi:
- Teko ea kamore ea mosi ea NBS: Botebo bo phahameng ba mahlo bo ikhethangDs≤150 (mokhoa oa ho tuka)
Thepa ea Mekaniki:
- Matla a ho thapolla ≥35 MPa (e tiileng), ho lelefala ha khefu ≥200% (e tenyetseha)
Ho Tsitsisa ha Thermal:
- DMA e tiisa hore ha ho na ho theoha ha modulus ho 180°C.
IV. Litokiso tsa Litšenyehelo le Tse Sireletsang Tikoloho
Mokhoa o Mong oa Theko e Tlase:
- Fokotsa zinc molybdate ho 3%, o nke sebaka sa Al(OH)₃ ka karolo e itseng ka Mg(OH)₂ (eketsa ho fihlela ho 15%).
Tharollo e se nang Antimoni:
- Tlosa Sb₂O₃, sebelisa 2% aluminium diethylphosphinate + 5% nano-kaolin (bokgoni bo tlase hanyane; bo hloka botenya ba 3 mm bakeng sa V0).
Ntho ea Bohlokoa ka ho Fetisisa ho Mosi:
- Kenya 1% ea carbon black e koahetsoeng ka resin ea silicone ho fokotsa bongata ba mosi ka 15%.
V. Tataiso ea Ts'ebetso
- Tatellano ea ho Kopanya:
Resin ea PVC → stabilizer + setlolo → lintho tse thibelang malakabe (tse tlase ho isa ho tse phahameng) → plasticizer (e kentsoe qetellong ka spray). - Mekhoa ea ho Sebetsa ea Thempereichara:
Libaka tsa ho ntša li-screw tse peli: 160°C (ho fepa) → 170°C (ho qhibiliha) → 180°C (ho kopanya) → 175°C (hlooho ea die). - Mahloriso a Masterbatch:
Khothaletsa ho kenya 50%; kopanya 1:1 le PVC e sa tsoakoang bakeng sa ho enta ka ente ea ho qetela.
Sebopeho sena se leka-lekanya ho tiea ha mollo haholo, mosi o tlase, le botsitso ba ts'ebetso. Liteko tse nyane lia eletsoa pele ho sekala, ka liphetoho tse ipapisitseng le foromo ea sehlahisoa (maqephe, likhoele, jj.).
More info., pls contact lucy@taifeng-fr.com
Nako ea poso: Phupu-08-2025
