ntchito

Njira yopangira payipi ya PVC:

Kusakaniza → kukanda → granulation extrusion → kupanga extrusion

1. Kukanda zosakaniza

Mitundu yonse ya zipangizo amapimidwa molondola ndi kuika mu kneader mu dongosolo linalake.Kudyetsa ndondomeko: PVC utomoni, plasticizer, stabilizer, lubricant.Kutentha kukafika 100 ~ 110 ℃, zinthuzo zimatha kutulutsidwa.

2.extrusion granulation

Izi kulamulira kutentha, mfundo apamwamba kwambiri kutentha zinthu ayenera kulamulidwa pa apamwamba kuposa kutentha kusungunuka zinthu, m'munsi kuposa extrusion akamaumba kutentha, ndiye pakati 155 ~ 160 ℃.Granulation iyenera kukwaniritsa cholinga cha kusakaniza kwathunthu ndi pulasitiki yoyambirira.

Kutentha kwa gawo lililonse la granulator kuli motere:

Chigawo cha 80 ~ 90 ℃;Chigawo cha 130 ~ 140 ℃;Magawo atatu 140 ~ 150 ℃;Kuyambira 150 ~ 160 ℃.

3. extrusion chubu kupanga

Kutentha kwa machubu a extrusion kumakwera pang'ono.Kawirikawiri, kuwonekera kwa chitoliro kumakhudzana ndi kutentha kwa kupanga.Pazigawo zina za kutentha, kutentha kwapamwamba kumawonekera bwino, ndipo mosiyana.Panthawi imodzimodziyo, kuthamanga kwachangu ndi kuthamanga kwa kuzizira kudzakhudza kuwonekera kwa chitoliro.Kuthamanga kwapang'onopang'ono kumakhala kokulirapo pang'ono, kuthamanga kwa kuzizira kumathamanga, ndipo kuwonekera kwa chitoliro kuli bwino.Liwiro traction zambiri 10% ~ 15% mofulumira kuposa liwiro extrusion.Kuziziritsa kwa payipi yowonekera kumapopera madzi ozizira pakufa kwa mphuno ndiyeno kuziziritsidwa mu thanki yamadzi.

Kutentha kwa zone iliyonse ya akamaumba extrusion ndi motere:

Zone 1:90 ℃;Zone awiri 140 madigiri 5 ℃;madera atatu 160 madigiri 5 ℃;Magawo anayi 170 madigiri 5 ℃.

4. PVC hose extrusion mosamala:

1. mwachindunji ndi ufa extrusion akamaumba, kutentha kwa extruder ndi za 5 ℃ m'munsi kuposa ndi zinthu granular.

2. Kuphatikiza pa mainchesi ang'onoang'ono (φ60mm pansipa) a chubu choziziritsa chopanda kanthu sichiyenera kuwomberedwa mu mpweya woponderezedwa, kukula kwakukulu kwa chubu chozizirira chopanda kanthu kuyenera kuwomberedwa mu mpweya woponderezedwa wa chubu, kuti zitsimikizire. kulondola ndi kukhazikika kwa kukula kwa chubu m'mimba mwake.Samalani khola kuthamanga kwa wothinikizidwa mpweya.

3. Samalani kukhazikika kwa liwiro la kukoka ndikupewa kusintha kwa m'mimba mwake kapena makulidwe a khoma chifukwa cha kusakhazikika kwamphamvu.

4. Ngati makinawo atsekedwa kwa nthawi yaitali, ayenera kuchotsedwa ndi kutsukidwa kuti asawonongeke.

Mitundu yosiyanasiyana yowonekera papaipi

1, payipi yopanda poizoni yowonekera

PVC 100 DOP 45

ESBO 5 Dioctyl tin laurate 2

Calcium-zinc pawiri stabilizer 1

Pulasitiki imathanso kusankha glycol butyl phthalate ester (BPBG) ndi citric acid atatu butyl ester.

2. Paipi yowonekera

PVC 100 epoxy plasticizer 5

DOP 30 Organotin 1.5

DBP 10 Barium stearate, cadmium 1

DOA 5

3. Paipi yowonekera

PVC 100 ESBO 5

DOP 45 barium - cadmium madzi stabilizer 2

4. Transparent payipi

PVC 100 Zinc stearate 0.05

Cadmium stearate 1 DOP28

Barium stearate 0.4 DBP 18

Lead stearate 0,1 kuchuluka kwa bleaching agent

5. Transparent payipi

PVC 100 MBS 5 ~ 10

DOP 30 C-102 3

15 HSt 0.3 DBP

6. Machubu oyika magazi opanda poizoni

PVC 100 ESBO 5

45 HSt DOP 0.5

AlSt ZnSt 0.5 0.5

Paraffin 0.2

7. Transparent munda payipi

PVC 100 DOP 40

ED3 10 Barium - cadmium fluid stabilizer 1

Chelator 0.3 stearic acid 0.3

8. Transparent chubu cha zakumwa

PVC 100 DOP (kapena DOA) 50

Calcium-zinc liquid stabilizer 3 Stearic acid 0.5

9. Chubu chothira magazi ndi thumba la plasma

PVC 100 DOP 45

ESBO 5 ~ 10 Calcium zinc madzi okhazikika 1.5