PVC Resins ni hi fe fɛɛ SG3, SG5, SG7: Tsɔne ahe nilee ni ato he gbɛjianɔ kɛha nitsumɔhe tsabaai kɛjɛ naagbee kɛyashi naagbee

Molecular Design kɛ Gbɔmɔtsoŋ Sui

SG3 (Kwɔ - Tsakemɔ Gbɛjianɔtoo)
1300 - 1500 kɛ K - sɛɛnamɔ ni ji 70 - 72, nɛkɛ grade nɛɛ jieɔ molecular chains kakadaji ni haa plasticizer lɛ mlibotemɔ yaa hiɛ lɛ kpo. - 250μm nibii bibii lɛ amlijaa lɛ haa agbɛɔ ashwãa yɛ ekomefeemɔ mli yɛ nibii ni yɔɔ mlɛo ni afee lɛ amli, ni ehaa 25 - 35g ni ji plasticizer lɛ shwieɔ 100g resin mli. Nɔ ni jɛɔ mli baa lɛ haa sɛɛ tsɛɔ waa yɛ be mli ni efoɔ lɛ, ni ehaa efeɔ nɔ ni hi jogbaŋŋ kɛha nibii ni biɔ ni atsake amɛhe shii abɔ ni etseee.

SG5 (Srɔtofeemɔ Teŋgbɛ - Gbɛjianɔtoo)
1000 - 1100 kɛ K - sɛɛnamɔ ni ji 65 - 67 lɛ, SG5 haa shikpɔŋ ni yɔɔ teŋgbɛ ni yɔɔ hewalɛ. Ehe nibii bibii ni afee lɛ jogbaŋŋ (0.45 - 0.58g/mL) lɛ haa ŋmɔtɔ ni hoɔ jogbaŋŋ lɛ yaa hiɛ yɛ ŋmɔtɔ kɛ ŋmɔtɔ ni akɛwoɔ mli lɛ fɛɛ mli, yɛ be mli ni plasticizer ni mli wa (20 - 28g/100g) lɛ haa anyɛɔ atsakeɔ kɛjɛɔ ŋmɔtɔ ni mli wa fioo lɛ mli kɛyaa ŋmɔtɔ ni mli wa fioo lɛ mli. Molecular chain lɛ daa lɛ haa nitsumɔ mli naagbai baa shi, ni ehaa gbogbo lɛ mli tseɔ yɛ paipi mli.

SG7 (Tsɔne He Nilee ni Wa)
700 - 850 kɛ K - sɛɛnamɔ ni ji 60 - 62 lɛ, SG7 kɛ molecular nibii ni akɛwoɔ mli lɛ tsuɔ nii jogbaŋŋ kɛha shifimɔ. - 180μm fãi bibii ni yɔɔ mli lɛ (density 0.50 - 0.62g/mL) lɛ haa ŋwɛi ŋtayaai ni yɔɔ fãi ni afee lɛ amli lɛ baa shi, ni ehaa ŋtayaai ni tsiɔ mɔ naa lɛ yaa hiɛ yɛ tsumaa he saji amli. - 22g/100g) lɛ haa anyɛɔ afee nibii ni mli wa kwraa, yɛ be mli ni vinyl monomer ni eshwɛ lɛ ≤3μg/g lɛ kɛ niyenii - ni akɛtswaa shweshweeshwefeemɔ he mlai kɛha nibii ni akɛwoɔ mli lɛ kpeɔ.

Nitsumɔ Ekosistem

SG3: Flexibility He Nilelɔ lɛ
Yɛ okwaayeli nitsumɔi amli lɛ, SG3 - ni damɔ sinii ni akɛ 40 - 50 phr plasticizer fata he lɛ feɔ UV - ni haa ŋwɛi ŋtayaai lɛ feɔ shiŋŋ, ni haa la ni tsɔɔ mli lɛ kɛ hewalɛ ni tsiɔ yaafo naa lɛ yeɔ egbɔ. Kɛha tsofafeemɔ mli nitsumɔi lɛ, emli monomer ni baa shi lɛ haa anyɛɔ atsuɔ tsɔnei ni akɛjieɔ lá kɛjɛɔ gbɔmɔtso mli lɛ ahe nii, yɛ be mli ni yɛ naneshi atadei amli lɛ, ehaa tsɔnei ni haa mɔ he jɔɔ lɛ feɔ tsɔnei ni haa mɔ he jɔɔ lɛ yɛ hulutsoo tsakemɔi amli.

SG5: Nitsumɔhe Nitsumɔ Okpɔŋɔ lɛ
- 20 phr plasticizer ni ji SG5 lɛ tsuɔ nii koni amɛkɛfee la - ni tsiɔ la naa kɛha tsɔnei ni akɛtswaa la, ni amɛkɛ tsɔne ni tsiɔ la naa kɛ tsɔne ni sɛɛ tsɛɔ lɛ feɔ ekome. Yɛ tsumaa mli lɛ, ejɛɔ mli ewoɔ samfɛji ni kɔɔyɔɔ nyɛɛɛ afite lɛ amli, he ni egbɔjɔmɔ ni fa fioo lɛ teɔ shi ewoɔ ozone lɛ fitemɔ lɛ. Tsɔne mli nibii ni akɛwo mli, tamɔ shinaa naa, naa sɛɛnamɔ kɛjɛɔ ehewalɛ - kɛ - miitsiimɔ mlijaa.

SG7: Mɔ ni He Wa lɛ He Nɔyelɔ
Nitsumɔhei paipii gbɛjianɔtoi lɛ kɛ amɛhe fɔ̃ɔ SG7 modulus ni nɔ kwɔ lɛ nɔ kɛha tsofa - paipii ni nyɛɔ eshiɔ nu fɔŋ kɛ nɔnyɛɛ - nu mli paipii ni ato he gbɛjianɔ. Samflɛ ni ajie lɛ kpo, kɛ akɛ titanium dioxide futu mli lɛ, ejieɔ su ni yɔɔ srɔto kpo yɛ kponɔgbɛ shihilɛi amli. Mɛi ni feɔ tsɔnei ni akɛtsuɔ nii yɛ tsɔne mli lɛ kɛtsuɔ nii kɛfeɔ tsɔnei ni akɛwoɔ tsɔne mli lɛ amli, ni amɛkɛ egbɛfaŋnɔ ni yɔɔ shiŋŋ lɛ tsuɔ nii yɛ be mli ni hulutsoo be lɛ yaa hiɛ lɛ.

Gbɛtsɔɔmɔ ni kɔɔ gbɛjianɔtoo he

Thermal He Nitsumɔ He Saji
SG3 biɔ ni akwɛ hulutsoo be lɛ nɔ jogbaŋŋ (160 - 180°C) koni akafite oya; 10°C po ni fe nine lɛ baanyɛ aha hydrochloric acid ajie ehe kpo, ni ekɛ ŋmɔtɔ aba. Nɔ ni tamɔɔɔ enɛ lɛ, SG7 kpɛɔ 180 - 200°C nitsumɔ naa, ni ehaa ajieɔ oya kɛha paipii wuji, eyɛ mli akɛ nɔ ni fe 210°C lɛ kɛ molecular chain scission baa.

Nɔ ni akɛfataa he lɛ he gbɛjianɔtoo
- 2 phr ni ji calcium - zinc ni akɛfee nibii ni haa mɔ tsui nyɔɔ emli lɛ koni ekɛtsi hulutsoo ni fiteɔ nii yɛ be mli ni plasticizer nitsumɔ ni nɔ kwɔ tsuɔ nii lɛ mli, yɛ be mli ni SG7 he hiaa 0.5 - 1 phr pɛ yɛ plasticizer - ni haa mɔ tsui nyɔɔ emli lɛ ni baa shi lɛ hewɔ.
Nibii ni akɛwoɔ mli: Nibii ni akɛwoɔ mli lɛ fɛɛ náa 0.2 - 0.5 phr ni ji polyethylene wax lɛ he sɛɛ, shi SG3 baanyɛ abi ni akɛ tsofai babaoo aha lɛ koni ekɛba mligbɛ gbeekpamɔ ni yɔɔ nibii ni yɔɔ mlɛo lɛ amli lɛ shi.
Nibii ni fataa he ni tsuɔ nii: Antioxidants ni yɔɔ SG7 mli lɛ haa kponɔgbɛ sɔɔmɔ wala yaa hiɛ, yɛ be mli ni impact modifiers ni yɔɔ SG5 mli lɛ haa notch shitee-kɛ-woo kɛha fɛ̃i - kɔɔyɔŋ tsakemɔ nitsumɔi yaa hiɛ.

Tsɔne ahe nilee ni hi jogbaŋŋ yɛ Resin he mfonirifeemɔ mli

Kɛtsɔ molecular engineering pɔtɛɛ ni akɛ nitsumɔ - ni tsirɛɔ kaa lɛ ni akɛaawo mli lɛ nɔ lɛ, wɔ SG3, SG5, SG7 nitsumɔhe lɛ haa nifeelɔi lɛ hewalɛ koni amɛho kusum PVC naatsii lɛ ahe. Kɛjɛ tsakemɔ ni he hiaa kɛha tsofafeemɔ mli nibii ni akɛtsuɔ nii shikome lɛ nɔ kɛyashi emuuyeli ni tsumaa ni nɔ kwɔ biɔ lɛ nɔ lɛ, nɛkɛ tsɔnei nɛɛ jieɔ jeŋ nilee mli hewalɛ kɛ nitsumɔhe nitsumɔ ni akɛfee ekome lɛ kpo—ni kɛ shishitoo mlai heei haa kɛha nitsumɔ - ni tsirɛɔ polymer tsabaai.

Nibii pɔtɛɛ

Wolo ni Kwɛɔ Nɔ ni Hi jogbaŋŋ lɛ Nɔ