5results about How to "Good low temperature flexibility" patented technology

The invention relates to a low-temperature-resistant anti-skid adhesive material and a preparation method and application thereof, the anti-skid adhesive material comprises a modified HDPE base material layer and an acrylate pressure-sensitive adhesive layer coated on the base material layer, the base material layer comprises HDPE resin, POE elastomer, methyl vinyl silicone rubber, a compatilizer and a peroxide cross-linking agent; the adhesive layer comprises a soft monomer, a hard monomer, a macromonomer containing a polybutadiene chain segment, a functional monomer, a cold-resistant plasticizer, an initiator and a cross-linking agent. The anti-skid adhesive material provided by the invention can still keep high adhesion at a low temperature of-40 DEG C, and has good base material performance and excellent anti-skid performance.

This invention relates to the field of coating technology, and proposes a high weather-resistant alkyd protective coating and its preparation method. The alkyd protective coating comprises the following components in parts by weight: 45-55 parts alkyd resin, 20-42 parts methylphenyl silicone resin, 10-25 parts carbon nanotubes, 1-2 parts dispersant, 0.5-1.5 parts anti-settling agent, 1-2 parts drying agent, and 15-20 parts solvent. This technical solution solves the problems of poor weather resistance and flexibility caused by poor tensile properties, poor low-temperature flexibility, and poor aging resistance in related technologies of alkyd protective coatings.

The invention discloses a flexible ceramizable prepreg, a new energy automobile battery pack prepared from the same and a preparation method of the flexible ceramizable prepreg, and belongs to the technical field of new energy automobile safety materials. The prepreg is composed of a composite reinforcement body, an elastic ceramic matrix and a multifunctional auxiliary agent, and through the collaborative design of fiber toughening, elastic matrix and gradient ceramic forming, the protection function of rapid ceramic forming at the high temperature within 60 seconds is achieved. The heat conductivity coefficient is less than or equal to 0.1 W / (m.K), the fire-resistant time is more than or equal to 60 minutes, and the thermal runaway spreading of the battery pack can be effectively blocked. The invention further provides a preparation method of the battery pack integrated protection structure adopting the prepreg, through the process combination of module coating, shell compounding and edge sealing, the prepreg is adaptive to special-shaped structures of different models of battery packs, the thermal diffusion protection requirement in GB 38031-2021 Power Storage Battery Safety Requirements for Electric Vehicles is met, and the battery pack integrated protection structure has the advantages of simple process, low cost and wide application prospect. And the safety performance of the new energy automobile battery system is obviously improved.

This invention relates to the field of electrochemical energy storage materials and lithium metal battery technology, specifically to an in-situ polymerized solid electrolyte, its preparation method and application, and lithium metal batteries. This in-situ polymerized solid electrolyte is prepared by heating a ring-opening polymerization reaction using 1,3-dioxolane and 1,1,1-trifluoro-2,3-epoxypropane as reactants, sodium thiosulfate as an initiator, and lithium salt and plasticizer fluoroethylene carbonate as a precursor solution. This electrolyte possesses numerous amorphous regions, which is beneficial for ion transport, enabling the formation of a self-supporting dense structure. It also ensures close contact with the electrode, resulting in a pure interface that effectively reduces interfacial impedance and avoids side reactions at the electrode interface. Furthermore, it enhances oxidation resistance, broadens the electrochemical window, and inhibits dendrite growth. While achieving good mechanical properties, it also improves the cycle stability and safety performance of the battery. It has excellent application prospects in lithium metal batteries, lithium-ion batteries, solid-state energy storage systems, or flexible electronic devices.

The invention provides asphalt for a waterproof coiled material, a preparation method of the asphalt, the waterproof coiled material and a preparation method of the waterproof coiled material, and the asphalt is prepared from the following raw materials in parts by mass: 60-70 parts of intermediate base crude oil and / or naphthenic base crude oil, 0-20 parts of paraffin base crude oil and 20-30 parts of waste tire pyrolysis oil. The raw materials can effectively improve the application of the asphalt in the waterproof coiled material, and enhance the peel strength and low-temperature flexibility of the waterproof coiled material. The viscosity of the waterproof coiled material in the preparation process can be reduced, so that the generation energy consumption is reduced, and the dual benefits of resource recycling and environmental protection are realized.