Yuav ua li cas qhov decomposition kub thiab ib nrab-lub neej ntawm peroxide crosslinking neeg ua hauj lwm yuav tsum tau sib phim nrog cov txheej txheem curing qhov rais rau Teflon daim kab xev?

I. Cov ntaub ntawv tseem ceeb: Ib nrab-Life Parameters ntawm BPO thiab DCP

1. Ib nrab-Life Temperature Reference

Peroxide crosslinking agents ua raws li thawj qhov kev txiav txim siab decomposition kinetics, nrog rau ib nrab-lub neej (t₁ / ₂) ntawm qhov kub thiab txias yog qhov qhia tau siv ntau.

Benzoyl Peroxide (BPO): 1-feeb ib nrab-lub neej ntawm approx. 131 ° C, 1-teev ib nrab-lub neej ntawm approx. 92 ° C, 10-teev ib nrab-lub neej ntawm approx. 72 ° C. Decomposition by-products yog CO₂ thiab benzoic acid, uas tuaj yeem yooj yim ua npuas.

2. Dicumyl Peroxide (DCP):

-1-feeb ib nrab-lub neej ntawm approx. 171 ° C, 1-teev ib nrab-lub neej ntawm approx. 135 ° C, 10-teev ib nrab-lub neej ntawm approx. 115 ° C. By-products yog acetophenone thiab methane, nrog ib tug kuj muaj zog tsw.

3. Yam yuavtsum tau kawm uantej rau kev siv cov ntaub ntawv

Cov txiaj ntsig saum toj no yog cov ntaub ntawv siv rau cov khoom ntshiab. Hauv cov tshuaj nplaum tiag tiag, cov kuab tshuaj, cov khoom ntim, thiab cov tshuaj antioxidants tuaj yeem cuam tshuam nrog tus nqi decomposition, yog li kev kho ntawm DSC (Differential Scanning Calorimetry) yuav tsum tau ntsuas.

II. Logic rau Matching lub qhov rais txheej txheem

1. Txiav txim siab lub sij hawm raws li qib ntawm decomposition

Cov nplaum txheej yuav tsum ua kom tiav 97% -99% crosslinking (kwv yees li 5-7 ib nrab neej). Yog li ntawd, lub sij hawm kho yuav tsum yog 5-7 lub sij hawm ib nrab-lub neej ntawm lub hom phiaj kub.

2. Rov qab-Xaiv Kub los ntawm Cov Kab Ntau Lawm Nyob Hauv Lub Sijhawm

Yog tias lub sijhawm cua sov zoo hauv qhov cub yog 5 feeb thiab 5 ib nrab-lub neej yuav tsum ua kom tiav, ces qhov yuav tsum tau t₁/₂ ≤ 1 feeb. Qhov kub ntawm 1-feeb ib nrab-lub neej yog approx. 131 ° C rau BPO thiab approx. 171 ° C rau DCP. Lub curing kub yuav tsum tau teem ntawm los yog me ntsis saum toj no tus nqi.

3. Rov qab-Xam Lub Sijhawm los ntawm qhov ntsuas kub siab tshaj plaws

Ua ntej txiav txim siab qhov kub siab tshaj plaws (Tmax) uas lub substrate thiab nplaum txheej tuaj yeem tiv taus. Nrhiav ib nrab-lub neej ntawm qhov kub thiab txias, tom qab ntawd xam lub sijhawm nyob hauv qhov tsawg kawg nkaus los ntawm kev sib npaug ntawm 5-7 zaug, txhawm rau tiv thaiv thermal puas los ntawm overheating.

III. Hom Kho Windows rau Teflon Daim kab xev

Lub Teflon substrate muaj cov cua kub zoo heev, tab sis silicone siab-rhiab nplaum nplaum siv yog qhov txwv. Ob lub tswv yim yog npaj raws li tus yam ntxwv crosslinker.

1. BPO Low-Temperature Fast Scheme

Haum rau nyias daim kab xev los yog daim ntaub ntawv rhiab rau cua sov shrinkage. Qhov rai: 115-135 ° C, 3-10 feeb.

Piv txwv: Ntawm 125 ° C hauv qhov cub, BPO ib nrab-lub neej yog kwv yees. 2.5 feeb, yog li 5 ib nrab-lub neej siv li 12.5 feeb. Txhawm rau kom nrawm, qhov kub tuaj yeem nce mus rau 135 ° C (t₁ / ₂ ≈ 45 vib nas this), ua tiav cov txheej txheem hauv 5 feeb. Txawm li cas los xij, yuav tsum tau them nyiaj rau CO₂ micro-bubble teeb meem; stepped cua sov los yog nruab nrab nip rollers raug pom zoo.

2. DCP Cov Txheej Txheem Kub Kub Kub

Haum rau cov ntaub nplaum tuab thiab cov khoom uas yuav tsum tau ua kom muaj kev kub ceev tuav lub zog. Qhov rai: 150-175 ° C, 5-15 feeb.

Piv txwv li: Ntawm 160 ° C, DCP ib nrab-lub neej yog kwv yees. 1.5 feeb, yog li 5 ib nrab-lub neej xav tau 7.5 feeb. Kev nce mus rau 170 ° C txo qis ib nrab-lub neej mus rau kwv yees. 0.8 feeb, ua tiav tshaj 97% decomposition hauv 5 feeb, sib piv cov kab ntau lawm. PTFE yog dimensionally ruaj khov ntawm qhov kub thiab txias, ua qhov no zoo tagnrho muaj qhov rais.

IV. Cov ntsiab lus tseem ceeb rau kev sib tw

1. Kev sib koom ua ke ntawm cov txheej txheem cua sov thiab cov yam ntxwv decomposition

Siv lub gradient ntawm 'kub qis pib → high-temperature tag nrho crosslinking.' Piv txwv li, nrog DCP, ua ntej tso cov nplaum rau ntws thiab ntub tawm ntawm PTFE ntawm 130 ° C, ces tsa qhov kub thiab txias mus rau 165 ° C kom tiav curing. Qhov no txo ​​qhov tsis xws luag thiab txhim kho anchorage.

2. Cov ntaub ntawv Ib nrab-Life yuav tsum tau calibrated rau qhov tseeb formulation

Inhibitors los yog cov kuab tshuaj nyob rau hauv daim ntawv nplaum tuaj yeem hloov pauv tus nqi decomposition. Siv DSC los ntsuas qhov curing exothermic nkhaus, nrhiav lub sij hawm kom ncav cuag qhov siab tshaj plaws cov tshuaj tiv thaiv ntawm tus txheej txheem kub, thiab rov qab xam qhov sib npaug ib nrab-lub neej raws li. Tsis txhob dig muag txais tus qauv qhov tseem ceeb.

3. Kev txiav txim siab ntawm Substrate Thermal History

Stretch-formed Teflon zaj duab xis tuaj yeem raug thermal shrinkage saum 200 ° C. Yog tias siv DCP lub qhov rais kub kub, lub substrate yuav tsum tau pre-annealed los yog tsawg-shrinkage skived zaj duab xis yuav tsum tau xaiv los tiv thaiv daim kab xev curling tom qab kho.

Hauv cov ntsiab lus: Raws li lub sijhawm cua sov tiag tiag ntawm cov kab ntau lawm, xaiv qhov kub thiab txias ntawm ib nrab lub neej txaus siab 'n × ib nrab lub neej ≈ lub sijhawm nyob,' yog li qhov tseeb sib piv cov yam ntxwv decomposition ntawm BPO lossis DCP rau cov txheej txheem kho ntawm Teflon daim kab xev.

Cov ntaub ntawv saum toj no yog muab los ntawm Jiangsu OK Tshiab Khoom Siv Technology Co., Ltd. , lub chaw tsim khoom ntawm Teflon high-temperature fabrics.

Yog tias koj xav paub ntau ntxiv txog cov ncauj lus kom ntxaws, daim ntawv thov scenarios, thiab cov kev xaiv kho kom haum rau peb cov khoom siv tag nrho-xws li Teflon high-temperature fabrics, Teflon high-temperature tape, Teflon high-temperature mesh bets, seamless adhesive machine belts, one-sided PTFE fabric, high-temperatures, fiberglass-temperature conveyor tiv tauj peb ntawm:

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