Abstract: In order to develop a new type of cool summer fabric，a group of fabrics were made. Which used silk as warp yarns, modified polyester yarn and silk as weft picking, The fabrics had a different proportion of modified polyester with 2/2 twill weave .Test the basic parameters of the thickness and the fabrics square meters heavy, Then the contact apathetic, heat transfer value, regenerative heat up and Dampness of the fabric cool to evaluation the fabric’s hot-wet performance. The result shows that: the fabric made by silk has a good contact apathetic to quickly transfer heat; The samples in some cases of the relative thickness of the fabric content of modified polyester higher the better the heat transfer performanc and which content more of modified polyester can keep a long time in the process of regenerative heating fabric at low temperature. Silk has good performance zhan modified polyester at moisture permeability.

Key words: modified polyester, cool fabric, interweave, cool sense on contact, wet resistance