Polyacrylonitrile (PAN) is used to study the effect of surface charge on electrospinning by adding LiCl. The theoretical analysis shows that the relationship between radius r of jet and the axial distance z from nozzle follows an allometric law in the form r～z-0.5 in case of full surface charge, and the scaling exponent becomes larger for partly charged fibers in electrospinning.

在小型反应器内合成了双峰聚丙烯（BMPP）和含有成核剂的双峰聚丙烯（BMPP/NA），考察了试样的结晶、熔融行为和力学性能。BMPP的结晶温度较均聚PP提高5℃（降温速率10℃/min），结晶速率有一定程度增加；而BMPP/NA的结晶温度较均聚PP提高16.5℃，且结晶速率明显加快。BMPP和BMPP/NA的拉伸强度和弯曲弹性模量较均聚PP有了较大提高。

It is first proposed that textile structures made of stainless steel (SS) fiber can be used to measure large strain under high temperature Four knitting structures are designed and applied as strain sensor In this paper, it is observed that the resistance of SS fiber fabric has a linear relationship with strain within a definite range Any change in fabric structure may cause changes of the linear range and sensitivity of the strain sensor The effect of the maximum strain of tensile cycle on the sensitivity has also been discussed Based on the experimental result, a strain sensor of SS fiber textile structure has been designed and tested The main mechanism of fabric sensing has been deduced to be the change of contact resistance between yarns during stretching. It is proved that this SS fabric can be used to monitor strain change in various technological areas

Electrospinning is a simple method used in the preparation of polymer fibers, the diameter of the electrospun fibers, varying in large from micrometer to nanometer, mainly depends upon the electrical field applied. The non-linear relation between the current of charged jet and the applied voltage is an intriguing and enduring problem. An allometric scaling relation between the current and voltage is obtained. He Chengtian' s inequality, which has millennia history, is applied.

介绍纤维布拉格光栅传感器（FBGS）埋入纺织复合材料中的有效性及测量误差，并对存在问题提出探讨。结果表明：为确保测量效果，必须选择合适的涂层，最有效的方法是适当提高涂层弹性模量。