|
|
Effect of Oxalic Acid As A Pot Life Extender on Viscosity Build-Up Behavior of A Telechelic Polybutadiene Resin
|
|
|
DOR
|
20.1001.2.9919199705.1399.11.1.435.0
|
نویسنده
|
- - ,- -
|
منبع
|
كنگره مهندسي شيمي - 1399 - دوره : 11 - یازدهمین کنگره بین المللی مهندسی شیمی - کد همایش: 99191-99705
|
|
|
چکیده
|
The high-filled composite mixing process is performed in two steps of pre-mixing and curative addition# hydroxyl-terminated polybutadiene slurry (htpbs) should have sufficient viscosity at the end of mixing (after curative addition) to allow easy casting at the available time, which called pot life# long pot-life for the htpbs is essential for ease of processing and non-defect grain production# there are several ways to extend the pot life of a high-filled composite# pot life extenders are new materials that are added to the slurry and extend the pot life# one of the recent pot life extenders is oxalic acid, which reduces the curing reaction rate to extend the pot life# in this article, various concentrations of oxalic acid were used at a temperature of 40 0c# the viscosity measurements were performed by a brookfield rotational viscometer at three different percentages# as the concentration of oxalic acid increases, the rate of increase in viscosity decreases and the pot life increases# the results showed that the addition of %0#05 oxalic acid is the best result that extends pot life from about 240 to 280 mins by playing a probable retarder for curing (polyurethane-network formation) reaction#
|
کلیدواژه
|
Oxalic Acid ,Pot Life ,Viscosity ,Pot Life Extender
|
آدرس
|
Imam Hossein Comprehensive University, Iran, Imam Hossein Comprehensive University, Iran
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|