38 results about "Air sensitivity" patented technology

The invention relates to a preparation method of a tin oxide fiber precursor and tin oxide crystal fibers. The preparation method comprises the following steps: carrying out a replacement reaction on halides of tin and potassium (sodium) acetate to synthesize the tin oxide fiber precursor which takes acetic acid as a ligand; concentrating a precursor solution to obtain a spinning solution and carrying out centrifugal silk spinning to obtain tin oxide precursor fibers; and carrying out procedures of special atmosphere pre-treatment, high-temperature heat treatment and the like on the precursor fibers to obtain the tin oxide crystal fibers. According to the preparation method, the long-diameter ratio of the tin oxide crystal fibers is greater than 1000, the tensile strength of the fibers is 0.8GPa-1.1GPa, the whiteness of the fibers is good and the color and luster of the fibers are soft. The preparation method is simple in preparation process, moderate in condition and stable in quality of fibers in batches; spinning sol does not go bad after being placed for a long time. The tin oxide crystal fibers can be applied to the fields of photocatalysis, air sensitivity, humidity sensitivity and the like. The tin oxide fiber precursor can also be used for preparing oxide thin films, nano powder and nano wires or preparing tin-containing functional materials including nano tin oxide fibers and the like by an electrostatic spinning method.

A self-sealing container, used for transferring one or more air sensitive samples between vacuum systems, includes a housing with a cavity that holds the sample(s), and a lid disposed on top of the housing. The lid is configured to interface with the housing to form a seal over the cavity when the lid is closed. At least two flexure systems, each coupled to the housing and the lid, are disposed on opposing sides of the housing. The flexure systems apply forces to the lid that move the lid horizontally and vertically above the housing, into an open position. A pneumatic actuator, movably coupled to the housing and the lid, that is actuated by a change in ambient pressure. When actuated, it applies forces that move the lid horizontally and vertically to the closed position, in opposition to and in excess of the forces applied by the flexure systems.

The invention belongs to the technical field of the chemical detection equipment, and specifically relates to a freezing conveying sample-injection device and method for element analyzer special sample detection. The freezing conveying sample-injection device for element analyzer special sample detection comprises a glove box, an electronic scale, an element analyzer, a freezing device and a precise sample injection device; the electronic scale and the freezing device are arranged in the glove box, a sample outlet of the glove box is connected with a sample inlet of the precise sample-injection device, the sample outlet of the precise sample-injection device is connected with the sample inlet of an element analyzer. By adopting an innovative idea for directly converting the liquid sample into a solid sample to detect, the problems that the existing detection equipment cannot accurately detect carbon, hydrogen, nitrogen, sulfur and oxygen elements in the liquid sample and an air sensitive sample and the organic elements in the liquid sample with strong volatility cannot be detected are solved.