材料工程2016，Vol.44Issue(8)：93-97,5.DOI:10.11868/j.issn.1001-4381.2016.08.015
含短切玻璃纤维的水玻璃精铸涂料的流变性
Rheological Behavior of Slurries Containing Short Glass Fibers for Preparation of Investment Casting Shell
摘要
Abstract
The short glass fibers were introduced into the slurries by 0%‐0 .5% (mass fraction of re‐fractory powders) for preparation of fiber‐reinforced shells for investment casting .The rheological properties of coatings containing different amounts of glass fibers were measured by R/S rheometer and the rheological behaviors of coatings w ere investigated .T he results show that the apparent viscos‐ities of coatings containing different amounts of glass fibers decrease with increasing shear rate ,i .e ., shear thinning behavior ,similar to that of the coating without fibers .At the same shear rate ,the ap‐parent viscosities of coatings containing fibers are higher than that of the coating without fibers and the apparent viscosities of coatings containing 0 .3% (mass fraction) fibers are higher than that of the others .The high shear viscosities of coatings containing fibers increase initially ,but later decrease , with increasing amount of fibers .The high shear viscosity of the coating containing 0 .3% fibers rea‐ches a maximum value of 102 .6 × 10-3 Pa · s ,increased by about 31 .9% ,in comparison to the coating without fibers .And this coating with a maximum thixotropical loop area value of 11 .8Pa · s-1 exhib‐its an excellent thixotropical behavior .However ,it is not found that there is a noticeable effect of the amount of glass fibers on the yield stress or suspensibility of coatings .关键词
短切玻璃纤维/涂料/流变性/精铸型壳Key words
short glass fiber/slurry/rheological behavior/investment casting shell分类
矿业与冶金引用本文复制引用
马海焦,刘向东,吕凯,张慧,孟山旦..含短切玻璃纤维的水玻璃精铸涂料的流变性[J].材料工程,2016,44(8):93-97,5.基金项目
教育部春晖计划基金资助项目 （）
