Evaluating Plasticizer Loss In PVC Membranes

Long-term durability assessment of PVC-P waterproofing

Classification:Chemical Auxiliary Agent
Other Names:Plasticizer
Purity:99.0%Min
Type:Plastic Auxiliary Agents
Usage:Plastic Auxiliary Agents, Textile Auxiliary Agents
MOQ:25kg/bag
Package:200kg/drum
Sample:Availabe
Application:Plasticizer
Delivery:Within 7-15 Days

While plasticizer loss is a desorption phenomenon, the use of absorption tests to evaluate plasticizer loss has been suggested by some authors (Griffiths, Krikor and Park,

The rate of loss of plasticizer depends on plasticizer type, temperature, sheet thickness and exposure time. The actual mechanism behind this loss is evaporation of plasticizer from the

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Long-term durability assessment of PVC-P waterproofing

Classification:Chemical Auxiliary Agent, Chemical Auxiliary Agent
Other Names:Plasticizer
Purity:99.5%min, 99.5%min
Type:Plasticizer
Usage:Plastic Auxiliary Agents
MOQ:25kg/bag
Package:200kg/drum
Delivery:Within 7-15 Days

Plasticizer loss has been identified as the only relevant degradation phenomenon to PVC-P geomembranes in underground applications. To analyse the long-term degradation of

measurements indicate the loss of the plasticizer from the PVC membrane as a contributing factor for the alteration in the mechanical properties of the PVC membrane. The experiments also

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Evaluation of PVC Geomembrane Shrinkage Due to

Classification:Chemical Auxiliary Agent, Chemical Auxiliary Agent
Other Names:Plasticizer
Purity:99.0%Min
Type:Adsorbent, Carbon Black
Usage:Coating Auxiliary Agents, Electronics Chemicals, Leather Auxiliary Agents, Paper Chemicals, Petroleum Additives, Plastic Auxiliary Agents, Rubber Auxiliary Agents, Surfactants, Textile Auxiliary Agents, Water Treatment Chemicals
MOQ:1000KG
Package:25kg/drum
Sample:Availabe
Application:Plasticizer
Delivery:Within 7-15 Days

When plasticizer migrates out of a polyvinyl chloride (PVC) geomembrane, the geomembrane shrinks. This paper presents equations that give the changes in volume and dimensions of the

The vast majority of studies on plasticizer loss from PVC are concerned with evaporative loss at elevated temperatures, or loss to a liquid extractant medium. 18-21 Plasticizer loss resulting from mechanical stress

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The influence of molecular weight on plasticizer

Classification:Chemical Auxiliary Agent, Chemical Auxiliary Agent
Other Names:Plasticizer
Purity:99.99, 99%
Type:Oil drilling
Usage:Coating Auxiliary Agents, Electronics Chemicals, Leather Auxiliary Agents, Plastic Auxiliary Agents, Rubber Auxiliary Agents
MOQ:25kg/bag
Package:200kg/drum
Shape:Powder
Place of Origin::China
Item:T/T,L/C
Application:Plasticizer
Quality control:COA ,SDS,TDS
Delivery:Within 7-15 Days

relationship between plasticizer loss due to diffusion and the square root of time. This relationship shows that plasticizer loss is strongly dependent on the initial plasticizer level in the PVC

Plasticizer Retention in PVC Geomembranes This paper was presented at Geo-Frontiers 2005, Austin, Texas The Influence of Molecular Weight on PVC Plasticizer Retention

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PLASTICIZER MOLECULAR WEIGHT AND PLASTICIZER

Classification:Chemical Auxiliary Agent
Other Names:Plasticizer
Purity:99.5, ≥99.5
Type:Adsorbent, Carbon Black
Usage:Leather Auxiliary Agents, Plastic Auxiliary Agents, Rubber Auxiliary Agents
MOQ:25kg/bag
Package:200kg/drum
Application:Plasticizer
Quality control:COA ,SDS,TDS
Delivery:Within 7-15 Days

The volatile loss of plasticizer from PVC membranes to the surrounding air plays an important role in outdoor roofing systems and in PVC geomembrane-lined pond

loss, and thus plasticizer vapor pressure provides a good indicator of the rate of plasticizer loss from the PVC geomembrane under many service conditions (Wilson 1995). The volatile loss of plasticizer from PVC membranes to the surrounding air plays an important role in outdoor roofing systems and in PVC geomembrane-lined pond

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Does plasticizer loss affect the behaviour of PVC-P geomembranes?
Further, to better analyse the influence of plasticizer loss on the behaviour of geomembranes, eight different formulations of PVC-P geomembranes are studied and tested for their mechanical properties. Long-term extrapolations of the ageing of PVC-P geomembranes are estimated on the basis of the plasticizer absorption tests.
What is the rate of loss of plasticizer?
The rate of loss of plasticizer depends on plasticizer type, temperature, sheet thickness and exposure time. The actual mechanism behind this loss is evaporation of plasticizer from the surface of the membrane. Therefore, for highly plasticized PVC, as in this case, the rate of plasticizer loss is dependent on the surface area.
Do Plasticized PVC membranes lose plasticizer if exposed to ethanol?
The evidence of loss of plasticizer from plasticized PVC exposed to low concentrations of ethanol was also observed in other studies [4e6]. The X-ray ﬂuorescence technique was also applied to examine PVC membranes exposed to 50% ethanol and pure water after 16 months and 18 months, respectively.
Does plasticizer loss affect geomembranes in underground applications?
In the hypothesis that plasticizer loss is the only degradation process relevant to geomembranes in underground applications, the loss of plasticizer can be evaluated through the loss of weight of the specimens. Accordingly, all the specimens were cleaned, dried in the desiccator for 72 h and weighed before testing.
Does plasticizer loss occur in moist environments?
Plasticizer loss is shown to be minimal in either moist or exposed environments. Membrane usefulness is not affected by the loss that does occur. Polyvinyl chloride (PVC) and PVC alloys have been used extensively for many years for containment. In fact, a number of sites decades old still have functional PVC liners.
Is plasticizer loss ratio a threshold for the end of a geomembrane?
By analysing the changes in physical and mechanical properties of aged and tailor-made geomembranes, with different content levels of plasticizer, a value of plasticizer loss ratio that can be considered as a threshold for the end of the effectiveness of the geomembrane has been evaluated at 0.45.