Sökning: "Wenbin Yu"

Hittade 2 avhandlingar innehållade orden Wenbin Yu.

  1. 1. Degradation of polyethylene pipes distributing chlorinated water : depletion of stabilizers, release of degraded products and polymer degradation

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Wenbin Yu; Ulf Gedde; Mats Jonsson; Minna Hakkarainen; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; polyethylene pipes; chlorine dioxide; degradation; NATURAL SCIENCES Chemistry Organic chemistry Polymer chemistry; NATURVETENSKAP Kemi Organisk kemi Polymerkemi;

    Sammanfattning : This thesis presents the study of antioxidants depletions in chlorinated media (10 ppm Cl2 - and ClO2 - aqueous media), polyethylene pipes degradations scenarios and migration of the degraded species to aqueous phase. Pressure testing on pipes and squalane testing with controlled pH aqueous media (6.8 ± 0. LÄS MER

  2. 2. Deterioration of Polyethylene Exposed to Chlorinated Species in Aqueous Phases Test Methods, Antioxidants Consumption and Polymer Degradation

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Wenbin Yu; Ulf Gedde; Sahar Al-Malaika; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Antioxidants; Polyethylene pipes; Chlorine dioxide; Degradation;

    Sammanfattning : This thesis presents a study of antioxidant depletion in water containing chlorinated species (water containing 10 ppm either Cl2 or ClO2, buffered to pH = 6.8), the degradation products in the aqueous phase, and polyethylene pipe degradation scenarios. LÄS MER