Ubwino ndi Kuipa kwa Calcium-Zinc Stabilizers mu PVC Production

Kore Phindu

1. Ili ndi chitetezo chodziwika bwino cha chilengedwe komanso mawonekedwe osavulaza

Calcium-zinc stabilizers alibe zitsulo zolemera monga lead ndi cadmium, ndipo amatsatira malamulo apadziko lonse lapansi oteteza zachilengedwe monga EU RoHS ndi REACH. Zogulitsa zake zitha kugwiritsidwa ntchito m'minda yomwe ili ndi zofunikira zachitetezo chambiri monga kulongedza chakudya ndi zida zamankhwala, kupewa kuopsa kwachilengedwe kwa zowongolera zamchere zamchere.

2. Kukhazikika kwabwino kwamafuta

Calcium-zinc stabilizers amatha kuyamwa bwino HCl yomwe imatulutsidwa panthawi ya PVC pogwiritsa ntchito synergistic zotsatira za hydrotalcite (layered bimetallic hydroxide) ndi ma polyols, potero amalepheretsa kuwononga. Zoyeserera zikuwonetsa kuti nthawi yokhazikika yamafuta apamwamba a calcium-zinc stabilizer imatha kupitilira mphindi 100, ndipo kukana kutentha kwamitundu ina ndi 15 ℃ kuposa ya mchere wachikhalidwe.

3. Kugwiritsa ntchito bwino ndikodabwitsa

Fomu ya mlingo wa ufa (yowerengera oposa 80%) ndiyosavuta kuyeza ndi kusakaniza, ndipo imathandizira kupanga. Pakadali pano, mawonekedwe ake opaka mkati amatha kuchepetsa kuchuluka kwamafuta akunja ndikuchepetsa chiwopsezo cha mvula. Mwachitsanzo, zolimbitsa thupi za calcium-zinc stabilizer zimatha kusunga madzi amadzimadzi amadzimadzi pokonza mapaipi olimba, ndipo kutha kwa zinthuzo kumakhala kopambana kuposa kwa mchere wamtovu.

4. Kusintha kogwirizana kwazinthu

Mapangidwe ena amawonjezera mphamvu yolumikizana pakati pa utomoni ndi chojambulira kudzera muukadaulo wolumikizana, kulola kuwonjezera zodzaza zotsika mtengo monga calcium carbonate, zomwe zingachepetse mtengo wazinthu ndi 5-10%.

Zolepheretsa Kugwiritsa Ntchito

1. Zenera laukadaulo waukadaulo ndi lopapatiza

Dongosolo la calcium-zinc limakhudzidwa kwambiri ndi kutentha. Ngati kutentha kwa processing kusinthasintha ndi kupitirira 5 ℃, kungayambitse kusinthika koyamba (chikasu) kapena kuyaka kwa zinki. Mwachitsanzo, kupanga mapaipi olimba a PVC kumafuna kuwongolera mwamphamvu wononga wononga ndi kutentha mutu, ndi ndondomeko debugging mkombero ndi 30% yaitali kuposa mchere wotsogolera.

2. Kusakhazikika kwanthawi yayitali

Mankhwala ena otsika amatha kusinthika pambuyo pake akakhala ndi kuwala kwa ultraviolet kapena kutentha kwachinyezi, ndipo katundu wotsutsa kukalamba wa mankhwala ndi wofooka kuposa wa organotin system. Kafukufuku wasonyeza kuti kuwonjezera kwa β -diketone zowonjezera amatha kusintha vutoli, koma mtengo ukuwonjezeka ndi oposa 20%.

3. Kudalira kwambiri mafuta

Kulinganiza liwiro plasticizing, mafuta owonjezera kunja monga oxidized sera ndi Pe Wax ziyenera kuwonjezeredwa. Kugwiritsa ntchito mopitirira muyeso kungayambitse kuyika kwa kaboni mu nkhungu, ndipo kuzungulira kwa nkhungu kumatha kufupikitsidwa mpaka 50% ya mchere wotsogolera. Mwachitsanzo, pokonza zinthu zowonekera, zokhazikika zapadera zamadzimadzi za calcium-zinc ziyenera kusankhidwa kuti zisagwe mvula.

4. Kugulitsana pakati pa Mtengo ndi Magwiridwe

Mtengo wa ma calcium-zinc stabilizers apamwamba kwambiri (monga omwe ali ndi microcrystalline 4A molecular sieves) amafika 22 yuan pa kilogalamu, yomwe ndi 3 mpaka 5 ya mchere wamchere. Ngakhale mtengo ukhoza kuchepetsedwa powonjezera kuchuluka kwa zodzaza, makina amakina a mankhwalawa akhoza kuperekedwa nsembe.

Development Outlook

Pakadali pano, zolimbitsa thupi za calcium-zinc zatenga 35% ya msika wapadziko lonse wa PVC, ndipo kukula kwa msika wam'nyumba kwadutsa yuan biliyoni 1.2. Zomwe zidzachitike m'tsogolomu zikuphatikiza: kupanga ukadaulo wa nano-hydrotalcite kuti ukhale wokhazikika, kukhathamiritsa ma polyols ndi phosphite esters kuti awonjezere kuyeretsa nkhungu, ndikuchepetsa mtengo wazowonjezera zatsopano monga ma nanowires asiliva kudzera munjira zowuma. Ndi kukhwimitsidwa kwa malamulo oteteza zachilengedwe, kuchuluka kwazinthu izi m'magawo monga ma profayilo omanga ndi ma catheters azachipatala apitilira kukula.