Kawm txog nplaim hluav taws-retardancy li ntawm PA66 los ntawm liab phosphorus coated nrog txawv resins

Nylon 66 muaj cov khoom siv zoo, hnav tsis kam thiab tshuaj lom neeg corrosion, thiab yog dav siv hauv tsheb, hluav taws xob thiab hluav taws xob. Txawm li cas los xij, PA66 yog cov khoom siv hluav taws xob, thiab yuav muaj cov tee dej thaum hlawv, uas muaj kev nyab xeeb zoo heev. Yog li ntawd, nws yog ib qho tseem ceeb heev los kawm txog kev hloov pauv hluav taws xob ntawm PA66. Cov nplaim hluav taws kub hnyiab ntawm PA66 tau siv los ua cov nplaim hluav taws kub hnyiab, tab sis cov nplaim hluav taws kub hnyiab tau ntsib teeb meem loj ntawm kev tiv thaiv ib puag ncig thiab CTI.

Tam sim no, liab phosphorus nplaim retardant tuaj yeem siv rau cov khoom siv hluav taws xob PA66 vim nws cov nplaim hluav taws kub hnyiab tau zoo thiab kev ua haujlwm zoo heev. Txawm li cas los xij, liab phosphorus nplaim retardants nyob rau hauv qhov kub thiab txias, huab cua, high humidity thiab alkaline ib puag ncig, yooj yim nqus dej, ua rau cov khoom acidification. Cov phosphoric acid yuav corrode cov khoom hlau, uas ua rau cov khoom siv hluav taws xob.

Txhawm rau tiv thaiv acidification ntawm liab phosphorus cov tshuaj tiv thaiv, txhim kho kev ruaj ntseg ntawm liab phosphorus, los ntawm txoj kev zoo tshaj plaws yog microcapsule coated liab phosphorus, txoj hauv kev no yog los ntawm txoj hauv kev polymerization, nyob rau hauv liab phosphorus hmoov nto rau. tsim cov khoom siv polymer ruaj khov, yog li koj tuaj yeem tawm ntawm kev sib cuag nrog cov liab phosphorus thiab oxygen thiab dej, thiab txo cov acidification ntawm liab phosphorus, txhim khu kev ruaj ntseg ntawm kev siv cov khoom.

Txawm li cas los xij, cov txheej txheem sib txawv muaj qhov sib txawv ntawm cov nplaim hluav taws kub phosphorus retardant ntxiv dag zog rau nylon. Nyob rau hauv txoj kev tshawb no, ob tug liab phosphorus nplaim retardants coated nrog phenolic resin thiab melamine resin raug xaiv los kawm txog cov teebmeem ntawm ob txheej txheej nplaim nplaim retardants ntawm ntau yam khoom ntawm nplaim retardant txhim kho PA66 khoom.

Lub hauv paus muaj pes tsawg leeg ntawm cov khoom yog raws li nram no: melamine resin coated liab phosphorus nplaim retardant master khoom (MC450), phenolic resin coated liab phosphorus nplaim retardant master khoom (PF450): liab phosphorus ntsiab lus ntawm 50%. Lub formulation ntawm nplaim retardant reinforced nylon 66 yog 58% nylon 66, 12% nplaim retardant master khoom, 30% iav fiber.

Coated liab phosphorus nplaim retardant txhim kho PA66 daim ntawv qhia

Tom qab sib tov thiab hloov kho, PA66 / GF30 puas coated nrog liab phosphorus nplaim retardant tau npaj, thiab cov khoom muaj feem xyuam tau ntsuas raws li hauv qab no.

1. nplaim retardancy, kub hlau kub thiab txheeb ze creepage cim index

Nws tuaj yeem pom tias ob qho tib si PA66-1 # thiab PA66-2 # tuaj yeem ncav cuag cov nplaim hluav taws kub ntawm 1.6mm V-0, thiab cov ntaub ntawv tsis drip thaum lub sij hawm combustion. Ob hom coated liab phosphorus nplaim retardant enhanced PA66 muaj zoo heev nplaim retardant nyhuv. Lub glow-wire flammability Performance index (GWFI) ntawm PA66-1 # thiab PA66-2 # tuaj yeem ncav cuag 960 ℃, thiab GWIT tuaj yeem ncav cuag 775 ℃. Kev ua haujlwm ntsug combustion thiab glow-wire xeem kev ua tau zoo ntawm ob coated liab phosphorus nplaim retardant cov ntaub ntawv tuaj yeem ncav cuag qib zoo heev.

Nws tseem tuaj yeem pom tias PA66-1 yog me ntsis siab dua CTI ntawm # PA66-2#, thiab CTI ntawm ob lub xim liab phosphorous coated nplaim hluav taws kub retardant PA66 cov ntaub ntawv yog siab dua 450V, uas tuaj yeem ua tau raws li daim ntawv thov ntawm feem ntau kev lag luam.

2. Mechanical khoom

Cov khoom siv kho tshuab yog cov khoom tseem ceeb ntawm cov nplaim hluav taws kub nylon rau nws daim ntawv thov.

Nws tuaj yeem pom tias lub zog tensile thiab khoov lub zog ntawm PA66-1 # yog siab dua, uas yog 164 MPa thiab 256 MPa feem, 5% thiab 6% siab dua li ntawm PA66-1 #. Qhov cuam tshuam lub zog thiab qhov tsis muaj zog ntawm PA66-1 # yog ob qho tib si siab dua, uas yog 10.5kJ / m2 thiab 66.9 kJ / m2 feem, 3% thiab 21% siab dua li ntawm PA66-1 #, feem. Lub zuag qhia tag nrho cov khoom ntawm ob cov ntaub ntawv coated nrog liab phosphorus yog siab, uas muaj peev xwm ua tau raws li qhov yuav tsum tau ua ntawm ntau yam teb.

3. Cov tsos thiab tsw ntxhiab

Nws tuaj yeem pom los ntawm cov tsos ntawm ob hom kev txhaj tshuaj molded qauv coated nrog liab phosphorus uas cov nplaim retardant txhim kho PA66 (PA66-1#) npaj nrog melamine resin coated nrog liab phosphorus muaj du nto, ci xim thiab tsis muaj fiber ntau ntab ntawm lub nto. Cov xim saum npoo ntawm nplaim hluav taws retardant ntxiv PA66 (PA66-2 #) npaj los ntawm phenolic resin coated nrog liab phosphorus tsis zoo li qub thiab muaj fiber ntau ntab. Qhov no feem ntau yog vim melamine resin nws tus kheej yog cov hmoov zoo thiab du, raws li txheej txheej txheej qhia, yuav ua lub luag haujlwm lubrication hauv tag nrho cov khoom siv, yog li cov khoom zoo li du, tsis pom tseeb ntab fiber ntau.

Ob hom liab phosphorus-coated nplaim retardant txhim kho PA66 hais tau muab tso rau ntawm 80 ℃ rau 2 teev, thiab lawv cov ntxhiab tsw loj tau sim. Pa66-1 # cov khoom muaj ntxhiab tsw thiab muaj zog pungent tsw. Pa66-2 # muaj qhov tsw me me thiab tsis muaj ntxhiab tsw ntxhiab tsw. Qhov no feem ntau yog vim nyob rau hauv situ txheej polymerization, amine coated resin me me molecules tsis yooj yim rau tshem tawm, thiab tsis hnov ​​tsw ntawm amine nws tus kheej yog loj.

4. Kev nqus dej

Vim tias PA66 muaj amine thiab carbonyl pawg, nws yog ib qho yooj yim los tsim hydrogen bonds nrog dej molecules, yog li nws yooj yim rau nqus dej thaum siv, ua rau cov nyhuv plasticizing, ua rau cov khoom ntim expansion, rigidity poob, thiab pom tseeb creep nyob rau hauv qhov kev txiav txim ntawm kev ntxhov siab.

Kev cuam tshuam ntawm cov nplaim hluav taws sib txawv ntawm cov nplaim hluav taws kub retardant liab phosphorus ntawm kev nqus dej ntawm cov khoom tau kawm los ntawm kev sim cov dej nqus ntawm cov khoom. Nws tuaj yeem pom tias qhov nqus dej ntawm ob cov ntaub ntawv nce ntxiv nrog lub sijhawm nce. Thawj qhov nqus dej ntawm PA66-1 # thiab PA62-2 # yog qhov zoo sib xws, tab sis nrog kev nce ntawm lub sijhawm nqus dej, cov dej nqus ntawm cov khoom sib txawv yog qhov txawv. Ntawm lawv, phenolic resin coated liab phosphorus nplaim hluav taws retardant nylon (PA66-2#) muaj qhov nqus dej tsawg ntawm 5.8% tom qab 90 hnub, thaum melamine resin coated liab phosphorus nplaim retardant nylon (PA66-1 #) muaj dej ntau dua. nqus tus nqi ntawm 6.4% tom qab 90 hnub. Qhov no feem ntau yog vim phenolic resin nws tus kheej cov dej nqus dej tsawg, thiab melamine resin yog cov dej nqus tau zoo, hydrolysis kuj tsis zoo.

5. Corrosion tsis kam rau hlau

Los ntawm cov qauv dawb paug thiab sib txawv coated liab phosphorus nplaim retardant ntxiv nylon cov khoom ntawm hlau corrosion nyob rau hauv daim duab tuaj yeem pom, tsis tuaj yeem koom nrog, cov qauv dawb ntawm kev hloov kho nylon hlau nto corrosion tsawg dua, muaj cua me ntsis thiab dej vapor corrosion tshwm sim los ntawm cim, PA66-1 # ntawm cov hlau corrosion kuj zoo, cov hlau nto gloss zoo dua, ob peb qhov chaw muaj corrosion tshwm sim, Cov hlau corrosion ntawm PA66-2 # yog qhov loj tshaj plaws, thiab cov ntaub ntawv hlau yog tarnished. , thaum nto ntawm daim ntawv tooj liab yog corroded thiab discolored obviously. Qhov no qhia tau hais tias corrosion ntawm melamine resin coated liab phosphorous nplaim retardant nylon yog tsawg tshaj li ntawm phenolic resin coated liab phosphorous nplaim retardant nylon.

Hauv kev xaus, ob hom nplaim-retardant txhim kho PA66 cov ntaub ntawv tau npaj los ntawm txheej liab phosphorus nrog melamine resin thiab phenolic resin. Ob yam khoom siv hluav taws xob tuaj yeem ncav cuag 1.6mmV-0, tuaj yeem dhau 775 ℃ glow-wire ignition kub, thiab CTI tuaj yeem ncav cuag ntau dua 450V.

Lub zog tensile thiab flexural zog ntawm PA66 tau txhim kho los ntawm melamine coated liab phosphorus, thaum lub zog cuam tshuam ntawm PA66 zoo dua los ntawm phenolic coated liab phosphorus. Tsis tas li ntawd, qhov tsis hnov ​​tsw ntawm phenolic resin coated nrog liab phosphorous nplaim retardant txhim kho PA66 yog tsawg dua li cov khoom siv melamine coated, thiab cov dej nqus dej tsawg dua. Melamine resin coated nrog liab phosphorous nplaim retardant txhim khu cov tsos ntawm PA66 nrog tsawg corrosion rau hlau.

Siv: Kawm txog cov nplaim hluav taws kub nyhiab ntawm PA66 coated nrog liab phosphorus, cov ntaub ntawv hauv Internet.