Simultaneous recovery of high-purity copper and polyvinyl
Simultaneous recovery of high-purity copper and polyvinyl chloride from thin electric cables by plasticizer extraction and ball milling. Jing Xu, Naoki Tazawa, Shogo Kumagai *, Tomohito Kameda, Yuko Saito and Toshiaki Yoshioka Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aoba Aramaki-Aza, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
Mechanism of Plasticizer Evaporation from Polyvinyl Chloride
RUSSIAN JOURNAL OF APPLIED CHEMISTRY Vol. 88 No. 6 2015 MECHANISM OF PLASTICIZER EVAPORATION1059 The DOP evaporation from lled lms can occur both with the same limiting step as in evaporation from un lled lms and with a change in the limiting step.
Treatment of DEHP-rich PVC waste in subcritical urine
The decomposition of DEHP mainly included hydrolysis, nucleophilic substitution, and acylation. DEHP could be converted into phthalic acid crystal at 220 °C with a yield of 66.25% due to the efficient hydrolysis action of SUW. All the removed Cl was transferred from PVC matrix to aqueous phase.
Mechanism of plasticizer evaporation from polyvinyl chloride
The mechanism of dioctyl phthalate evaporation from polyvinyl chloride films filled with dispersed carbon fiber was studied by thermal gravimetric analysis. At a low degree of filling, the evaporation is controlled by the diffusion of the plasticizer in the polymer. At increased degrees of filling, evaporation of the plasticizer from the film surface becomes the limiting step. The change in
'Plasticizers'. In: Encyclopedia of Polymer Science and
An overall mechanism of plasticizer action must give adequate explanations for this as well as the physical plasticization steps. The importance of step 5 cannot be stressed too strongly, since no
- What is a high volatility plasticizer?
- ASTM D2288). Polymer processing equipment always operates at high tempera-tu es ( 150 C). Under these ditions, a>high volatility plasticizer changes from the liq-uid to the vapor phase generating losses in the process, hazardous environments for the workers, and machi ery fouling.Volumetric resistivity (ASTM D1169
- Which type of plasticizer has increased its market share?
- razel 2004).Another type of plasticizers that has increased its market share is terephthalic acid esters. Chem-ically, the only difference between them and orthophthalates (“traditional phtha
- What are the characteristics of plasticizers market?
- ed MaterialsAs mentioned above, plasticizers market is directly linked to the polymer market and partic-u arly to PVC. Therefore, properties of plasticized products presented in the following are typical of PVC pplications:Abrasion ASTM D5963). It is used in appli-cations where the material undergoes friction continuously, like
- What is internal plasticization?
- separation. This effect is known as internal plasticization and, although it gener-ates materials with outstanding performances, is not widely used due to the high costs of plasti-cizers ( ypych 2012). Additionally, the homogeneity of the material requires strict control of the polymeriza
- Which plasticizer method is most used in industry?
- d materials. For this reason and mainly for the relatively low cost of plasticizers, external plasticization is the method most used in industry. The plasticizer-polymer ratio in a plasticized product is expressed in parts of plasticizer per hundred parts of p
- Why is plasticizer loss a problem?
- processing.Volatility ASTM D1203). In some applica-tions products are exposed to high tempera-tures that can generate loss of plasticizer by aporization. In other cases, although temper-ature is low, exposition ime is long. As a consequence plasticizer must have low volatil-ity. In these cases, as plasticizer loss increases, the material bec
