CAS:65605-70-1，Perfluoroalkylethyl acrylate

Fluorinated compounds with side-chains longer than six carbon have been banned due to their toxicity to environment, organisms and human, so that attentions have been paid on degradable short-chain fluorinated or non-fluorinated materials. Here in this paper, several novel short-chain fluorinated polysiloxanes with multi-functions were synthesized successfully and applied on cotton fabrics. Chemical structure of these fluorinated polysiloxanes were characterized by Fourier-transform infrared spectrum and nuclear magnetic resonance. Liquid repellency, washing durability, thermal stability, fabric style and color deepening of treated cotton fabrics were investigated. Additionally, the effect of benzoyl spacer on the surface wettability was fully studied. Results demonstrate that FPAPS-20@cotton (cotton fabric treated by fluorinated polysiloxane with 20% fluorine content) exhibits the greatest liquid repellency as the contact angles for water, ethylene glycol, glycerol and octane are 150.1°, 132.3°, 138.1° and 105.5°. Moreover, the benzoyl spacer plays a positive role in the durable wettability of FPAPS-20@cotton, resulting in the water contact angles ranging from 150.1° to 146.0° when FPAPS-20@cotton exposes to the water droplet for 20 min. X-ray photoelectron spectroscopy provides the experimental evidence for this result. On the other hand, thermal-gravimetric analysis confirms that the fluoroalkyl segments of the fluorinated polysiloxanes can decelerate the thermal decomposition of cotton fabrics. Moreover, compared with the untreated dyed cotton fabric, the K/S values of cotton fabrics with navy, red and orange color treated with FPAPS-20 increase by 42.61%, 11.00% and 18.18%, respectively.

We offer a laminated diaphragm that reduces the adhesion of the diaphragms to each other. The laminated diaphragm (4a) of a mode of the present invention is a laminated separator with a heat-resistant layer (2a, 2b) on one or both sides of a polyolefin substrate (1), wherein the laminated separator has a particle layer (3a, 3b) on at least one side, the particles contained in the particle layer contain thermoplastic resin, the average particle size of the particles is more than 0.1 μm and less than 3.0 μm, and the content of the inorganic filler in the heat-resistant layer is less than 70 wt%.

The present application relates to a separator and a lithium battery employing a separator. In one aspect, the separator comprises a porous substrate and a coating arranged on the surface of the porous substrate. Coatings include organic particles, primary binders, and inorganic particles. Organic particles have a first melting point of about 100 °C to about 130 °C. The first binder has a second melting point that is about 30°C or higher than the first melting point. The organic particles are coated with or embedded in the first binder. The separator maintains a mesh structure even at high temperatures, making it possible to improve the high-temperature stability of lithium batteries by employing this separator, as well as to delay the rapid rise in temperature and heat generation when shutdown occurs.