Tlhahiso ea Litšupiso bakeng sa V-0 Flame-Retardant PVC Thermoplastic Plastics

Tlhahiso ea Litšupiso bakeng sa V-0 Flame-Retardant PVC Thermoplastic Plastics

Ho finyella tekanyo ea V-0 ea ho thibela lelakabe la mollo (ho ea ka litekanyetso tsa UL-94) ka li-plastiki tsa thermoplastic tsa PVC, aluminium hypophosphite le boric acid ke li-retardants tse peli tse sebelisoang hangata. Maemo a bona a tlatsetso a hloka ho ntlafatsoa ho ipapisitsoe le sebopeho se ikhethileng, maemo a ts'ebetso le litlhoko tsa ts'ebetso. Mona ke tse ling tsa likhothaletso le mefuta ea litšupiso:

1. Keketso ea Boemo ba Aluminium Hypophosphite

Aluminium hypophosphite ke sesebelisoa se sebetsang hantle sa phosphorus-based flame retardant se loketseng lisebelisoa tsa PVC. E thibela ho tuka ka ho etsa lera le sireletsang la phosphate le ho ntša khase ea asiti ea phosphoric.

• Boemo ba tlatsetso bo khothalelitsoeng: 15-25 phr(likarolo ka likarolo tse lekholo tsa resin)
• Bakeng sa PVC e tloaelehileng, ho eketsa hohle20 phrea aluminium hypophosphite hangata e fihlella boemo ba V-0 flame retardancy.
• Bakeng sa ho lieha ha lelakabe ho phahameng, litekanyetso li ka eketsoa, ​​​​empa phello ea thepa ea mochini e lokela ho nkoa.
• Mehato ya tlhokomelo:
• Hypophosphite ea aluminium e feteletseng e ka fokotsa ts'ebetso ea ts'ebetso (mohlala, phallo e fokolang).
• Ho kgothaletswa ho kopanya le li-retardants tse ling tsa mollo (mohlala, boric acid, aluminium hydroxide) bakeng sa liphello tsa synergistic.

2. Keketso ea Boemo ba Boric Acid

Asiti ea boric ke sehlahisoa sa lelakabe sa theko e tlaase se sebetsang haholo-holo ka ho senyeha ha endothermic le ho thehoa ha lera le sireletsang joaloka khalase.

• Boemo ba tlatsetso bo khothalelitsoeng: 5-15 phr
• Boric acid e atisa ho sebelisoa e le ntho e thibelang lelakabe la bobeli, 'me tekanyo e feteletseng e ka senya thepa ea mochine le ea ho sebetsa.
• Ho PVC, ho eketsa hohle10 phrea asiti ea boric e ka amahanngoa le aluminium hypophosphite ho matlafatsa ho lieha ha lelakabe.
• Mehato ya tlhokomelo:
• Boric acid ke hygroscopic, kahoo ho boloka le ho sebetsana le tsona ho lokela ho qoba ho kenngoa ha mongobo.
• Phello ea eona e thibelang lelakabe e lekanyelitsoe ha e sebelisoa e le mong; hangata e kopantsoe le lintho tse ling tse thibelang lelakabe (mohlala, aluminium hypophosphite, aluminium hydroxide).

3. Synergistic Foromo ea Aluminium Hypophosphite le Boric Acid

Ho finyella tekanyo ea V-0, aluminium hypophosphite le boric acid e ka kopanngoa bakeng sa liphello tsa synergistic. Ka tlase ke tlhahiso ea litšupiso:

• Aluminium hypophosphite: 15-20 phr
• Boric acid: 5-10 phr
• Li-additives tse ling:
• Plasticizer (mohlala, DOP): Joalo ka ha ho hlokahala (e lokisoa ho ipapisitsoe le litlhoko tsa boima ba PVC)
• Stabilizer:2–5 phr(mohlala, letsoai la lead, calcium-zinc stabilizers)
• Setlolo:0.5–1 phr(mohlala, asiti ea stearic)

Sebopeho sa Mehlala:

• Resin ea PVC:100 phr
• Aluminium hypophosphite:18 phr
• Zinc borate:8 phr
• Plasticizer (DOP):40 phr
• Stabilizer:3 phr
• Setlolo:0.8 phr

4. Teko le Ntlafatso

Lits'ebetsong tse sebetsang, mehato e latelang e khothaletsoa bakeng sa tlhahlobo le ntlafatso:

1. Sebopeho sa Pilot:Lokisetsa teko e nyane ho latela mefuta ea litšupiso.
2. Tlhahlobo ea UL-94:Etsa liteko tse otlolohileng tsa ho chesa ho lekola boemo ba ho lieha ha lelakabe.
3. Teko ea tšebetso:Lekola thepa ea mochini (mohlala, matla a ho tsitsa, matla a tšusumetso) le ts'ebetso ea ts'ebetso (mohlala, ho phalla, botsitso ba mocheso).
4. Ntlafatso:Fetola maemo a tlatsetso a aluminium hypophosphite le boric acid kapa hlahisa tse ling tse thibelang malakabe (mohlala, aluminium hydroxide, antimony trioxide) ho ntlafatsa ts'ebetso.

5. Lintlha Tse ka Sehloohong

• Mocheso oa ho sebetsa:Lithempereichara tsa ho bola ha aluminium hypophosphite le boric acid li batla li phahame; etsa bonnete ba hore mocheso oa ho sebetsa ha o fete meeli ena ho qoba ho senyeha.
• Phatlalatso:Etsa bonnete ba ho hasana ka mokhoa o ts'oanang oa li-retardants tsa lelakabe ho PVC ho thibela litaba tsa mahloriso tsa lehae.
• Tšusumetso ea tikoloho:Ka bobeli aluminium hypophosphite le boric acid ke li-eco-friendly flame retardants, empa ho lumellana le li-additives tse ling ho lokela ho netefatsoa.

6. Qetello

Ho fihlella boemo ba V-0 ho lieha ha lelakabe ho polasetiki ea thermoplastic ea PVC, maemo a khothaletsoang ke15–25 phr bakeng sa aluminium hypophosphitele5-15 phr bakeng sa boric acid. Tšebeliso e kopanetsoeng ea li-retardants tsena tsa malakabe e ka ntlafatsa ts'ebetso. Ha e le hantle, ho ntlafatsa ho ipapisitsoe le litlhophiso tse ikhethileng le litlhoko tsa ts'ebetso ho bohlokoa, 'me tlhahlobo ea UL-94 e lokela ho etsoa ho netefatsa lintlha tsa ho lieha ha lelakabe.

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