公开(公告)号：US20180142100A1

公开(公告)日：2018-05-24

申请号：US15648136

申请日：2017-07-12

申请人： Dongguan University of Technology

发明人： Yongjun Xu ,  Zhuodi Cai ,  Qiwen Cai ,  Huibin Yin

IPC分类号： C08L93/04 ,  B29C39/00 ,  B29C39/38

CPC分类号： C08L93/04 ,  B29C39/003 ,  B29C39/38 ,  B29K2091/00 ,  C08L91/06

摘要： Disclosed are a precision casting wax based on graphite oxide modified rosin and its production method. The precision casting wax is composed of 20%˜30% of modified rosin, 50%˜65% of paraffin, 5%˜10% of an adhesion agent, 5%˜40% of PE wax, and 0%˜3% of montan wax (in mass percentage), and the total content adds up to 100%. The modified rosin is composed of first-grade rosin, graphite oxide, zinc oxide and pentaerythritol. The graphite oxide, zinc oxide, and pentaerythritol have a mass equal to 5%˜8%, 0.3%˜0.5%, and 5%˜8% of the mass of the first-grade rosin respectively. The modified rosin has a softening point of 98° C.˜103° C. and an acidity value of 15 KOH/g˜25 KOH/g. The present invention has the features of small needle penetration, small linear shrinkage rate, large bending strength, and small ash content, and thus can satisfy the requirements of high size precision and high surface quality of the precision casting.