2results about How to "Improve mechanical protection performance" patented technology

This invention provides a fiber optic anti-loss coupling device and a method for multi-hole deployment in coal mines, belonging to the field of coal mine safety monitoring technology. Based on a PVC pipe with grooved outer wall and external and internal threads at both ends, and a grooved anti-bending guide assembly, this invention provides a fiber optic deployment device and method for drilling holes. It is suitable for the efficient and reliable deployment of distributed acoustic sensing (DAS) microseismic monitoring optical cables in coal mines, especially addressing the needs for improved bending resistance, tensile strength, and coupling quality of bottom-hole optical fibers under cement slurry sealing conditions. By improving the PVC pipe structure, guide structure, and sealing / sealing process, low-loss and high-coupling-efficiency fiber optic deployment in mines is achieved.

The application provides a battery fireproof partition plate and a preparation method thereof, a battery module and a new energy vehicle. The battery fireproof partition plate comprises a high-temperature heat-resistant insulating sheet, and the high-temperature heat-resistant insulating sheet is arranged on the outer side of a modified polyurethane fireproof core plate. The modified polyurethane fireproof core plate comprises component A and component B. Component A comprises 30-50 parts of medium-functionality polyether polyol, 1-5 parts of a catalyst, 1-10 parts of an organic phosphate, 10-25 parts of melamine phosphate, 1-10 parts of a low-functionality chain extender, 1-10 parts of pentaerythritol, 1-10 parts of aluminum hydroxide, 1-10 parts of hollow glass microbeads and 1-5 parts of a smoke suppressant. Component B comprises 20-40 parts of an isocyanate mixture. The battery fireproof partition plate not only has a good mechanical protection effect, but also improves the fireproof and heat insulation performance of the battery fireproof partition plate, that is, the fireproof and heat insulation time of the battery fireproof partition plate is 300 s at a temperature above 1300 DEG C, thereby effectively preventing the flame energy from spreading to the surrounding.