In the cases of study hydrophobicity transference properties of silicone rubber

pollution effect by traditional methods that brushing method and dipping method probably will not satisfy tests requirement if tests ask for the distribution of pollution layer to be very even. This paper focus on introducing contaminating methods for high temperature vulcanizing silicone rubber（HTV） materials. Several contaminating methods are introduced in this paper for HTV plate samples. In this situation

bowstring method

as a new method which is introduced in the paper

is a good choice. Under the premise of proving quantitative contamination

bowstring method can get ideal pollution layer by using the feature of liquid surface tension. Dipping method is able to ensure the content of pollution on samples roughly the same. However

this method is difficult to control the pollution real content on the surface. Quantitative brushing method can get ideal pollution layer. Dipping method and quantitative brushing method have different advantageous

and it is important to choose suitable contaminating methods in different cases.