15results about How to "Improve cold resistance" patented technology

This invention discloses a cold-resistant, low-smoke, airtight, explosion-proof control cable and its manufacturing method, relating to the field of control cable technology. It includes a central transmission cable with an outer protective rubber layer. The outer protective rubber layer is covered by an inner anti-slip silicone ring, which is further covered by an inner rubber expansion layer. A side-guided inner tube is located outside the inner rubber expansion layer. This invention utilizes a flexible expansion airbag and an adjustable isolation box with a linked internal and external pressure-stabilizing structure to maintain the internal air pressure of the control cable within a suitable range during use. This allows for rapid sealing and protection of the damaged area after external damage, preventing internal damage or electrical sparks caused by external impurities after the outer sheath is damaged. This effectively improves the explosion-proof capability and safety of the control cable.

This invention relates to the field of concrete admixtures, specifically to an anti-mud polycarboxylate superplasticizer, its preparation method, and its application. The anti-mud polycarboxylate superplasticizer provided by this invention comprises, by weight, the following raw materials: 100-180 parts of unsaturated polyether monomer, 5-10 parts of unsaturated carboxylic acid monomer, 2-5 parts of air-entraining monomer, 5-10 parts of anti-mud monomer, 10-20 parts of oxidant, 0.4-0.6 parts of reducing agent, 5-7 parts of chain transfer agent, and 150-300 parts of water; the air-entraining monomer and the anti-mud monomer have specific structures. The simultaneous introduction of specific anti-mud monomers and air-entraining monomers into the anti-mud polycarboxylate superplasticizer of this invention not only reduces clay adsorption but also provides better dispersibility and anti-mud effect at lower dosages, increasing the overall workability of concrete and improving concrete performance.

This invention relates to the application of the maize BRI1a gene in regulating plant cold tolerance. The invention discovers that the maize BRI1a protein can negatively regulate plant cold tolerance; by reducing the expression level of the BRI1a gene, plant cold tolerance can be effectively improved, thus increasing the survival rate of plants under low-temperature environments. This invention utilizes CRISPR / Cas9 technology to obtain cold-tolerant BRI1a gene knockout homozygous lines, providing new gene resources for breeding transgenic plants with improved cold tolerance and improving cold-tolerant plant germplasm resources.

This invention discloses a PVC cable sheath material, comprising the following components by weight: 100 parts PVC resin; 26-40 parts cold-resistant rubber; 45-53 parts cold-resistant plasticizer; 45-52 parts filler; 10-26 parts flame retardant; 9-15 parts heat stabilizer; 0.5-1.2 parts antioxidant; 2.0-3.5 parts lubricant; and 0-1.2 parts colorant. This invention also discloses a method for preparing the PVC cable sheath material and a cold-resistant and flame-retardant cable. The PVC cable sheath material of this invention has excellent cold resistance and flame retardancy, and can meet the requirements for cable sheath use in extremely cold environments of ~40℃ and below.

This invention belongs to the field of biotechnology, specifically relating to the cassava transcription factor MeWRKY30 and its applications. This invention cloned the transcription factor gene of MeWRKY30 from cassava. Overexpression of this gene in cassava can improve the resistance of transgenic cassava plants to low-temperature and drought stress. The effects of qRT-PCR on cassava... MeWRKY30 Gene expression was significantly upregulated after drought and treatment with the plant hormone abscisic acid (ABA). After recovery from low temperature treatment, the malondialdehyde content of the overexpressing cassava lines decreased, wilting was reduced, root growth inhibition was lessened, and the number of cortical cells in the root tip meristem was significantly increased.

This invention discloses a nano-silicon-based special transformer cooling oil and its preparation method. The cooling oil comprises the following components by mass percentage: 85%–90% modified silicone oil base oil, 2%–3% spherical nano-silicon particles, 1%–5% composite antioxidant, 0.5%–2% polyether-modified silicone oil dispersant and stabilizer, and the balance being functional additives. This invention constructs a three-dimensional thermally conductive network using surface-modified nano-silicon, synergistically combining composite antioxidants, low-temperature flow improvers, and anti-cavitation additives. This allows the cooling oil to maintain high insulation performance while achieving a thermal conductivity increase of ≥50%, good low-temperature fluidity at -80℃, partial discharge ≤5pC, cavitation inhibition rate ≥78%, overload capacity up to 200%, and service life extended to 40 years. This product is particularly suitable for extreme environments with altitudes ≥5000 meters and temperature differences ranging from -80℃ to +120℃, meeting the requirements of ultra-high voltage DC converter transformers and intelligent substations in cold regions for efficient heat dissipation and long-term stable operation.

This application relates to the field of cable protection pipe technology, and in particular to a low-temperature impact-resistant CPVC cable protection pipe, which includes a protection pipe body, an insulation layer, and a circulation mechanism. An impact-resistant mechanism is fixedly connected to the inner side of the protection pipe body. A cable body is inserted through the insulation pipe body inside the impact-resistant mechanism. A heat exchange mechanism is fixedly connected to the outer surface of the insulation pipe body. The circulation mechanism is located at the top of the protection pipe. This technical solution, through its heat exchange, circulation, impact resistance, and heat recovery structure, combined with a composite insulation layer and a suitable heat exchange medium, efficiently absorbs solar energy and recovers waste heat from the cable, continuously insulating the protection pipe body day and night, resisting external impacts, preventing low-temperature embrittlement and cable overheating, adapting to different low-temperature environments, reducing heat loss and energy consumption, and solving the problems of existing CPVC cable protection pipes such as poor resistance to low temperatures, weak impact resistance, and limited adaptability.

This invention discloses an emergency product and method for hypothermia protection in low-temperature environments, belonging to the field of hypothermia protection and emergency care. This invention is the first to apply triiodothyronine (T3) to the preparation of an emergency product for hypothermia protection in low-temperature environments, fully utilizing T3's ability to rapidly increase heat production in tissues such as brown adipose tissue, thereby enhancing the body's active heat production capacity. Combining the physiological metabolic characteristics of the human body with the pharmacological properties of T3, this invention has achieved excellent results in animal experiments. On the one hand, T3 can maintain the core body temperature of hypothermic experimental animals at a higher level for a longer period, resulting in increased swimming time and extending the golden time for rescue. On the other hand, it can effectively improve the recovery of body temperature after rescue, significantly increasing the success rate of treatment. However, when using T4, which is considered more effective in conventional clinical settings, no significant improvement in these two aspects was observed, fully demonstrating the specificity and superiority of T3.

The present application belongs to the field of fertilizer preparation, and particularly relates to an active silicon-calcium-potassium-magnesium fertilizer, and preparation and application thereof. The active silicon-calcium-potassium-magnesium fertilizer contains biomass ash 60%, mineral humic acid 30% and binder 10% by weight. The active silicon-calcium-potassium-magnesium fertilizer is used as base fertilizer or topdressing. When used as base fertilizer, the application amount is 200 kg, and when used as topdressing, the application amount is 50 kg. The present application uses biomass ash of a biomass thermal power plant as the main raw material, adds appropriate amount of mineral humic acid, uses clay as binder, and uses granulation process to prepare granules, and then uses film spraying technology to inoculate functional bacterial agent. On the one hand, the present application solves the resource recycling of a large amount of biomass ash of a biomass power plant, and on the other hand, the present application improves the activity of silicon, calcium, potassium and magnesium in the product, and meets the needs of crops for silicon, calcium, potassium and magnesium.

The application discloses a T5H gene from Hippophae rhamnoides and application of a protein coded by the T5H gene in improving cold resistance of plants, and belongs to the technical field of biotechnology. The T5H gene from Hippophae rhamnoides and the protein coded by the T5H gene can enhance survival rate and cold resistance of plants (such as crops) under low-temperature stress, and have wide application prospect and popularization value in agricultural production practice.

This utility model relates to the field of wheeled fire extinguishing technology, specifically to the structure of a cold-resistant wheeled water-based fire extinguishing device. It includes a storage cylinder, a top connector fixedly connected to the top of the storage cylinder, a bottom connector fixedly connected to the bottom of the storage cylinder, a liquid control seat on the surface of the top connector, a liquid pump frame at the top of the liquid control seat, and a heating unit at the bottom of the liquid control seat. This utility model, through the configuration of the storage cylinder, top connector, bottom connector, liquid control seat, liquid pump frame, heating unit, spiral stirring roller, first heating pad, side heating frame, side liquid delivery pipe, heating valve head, and second heating pad, enables the device to perform a more efficient dual heating operation of the extinguishing agent in a cold-resistant wheeled water-based fire extinguishing device. In actual use, the operator first fills the storage cylinder with the extinguishing agent to be used, and then controls the suction of the extinguishing agent at the liquid pump frame on the surface of the liquid control seat.

This invention discloses a thermosensitive molybdenum disulfide composite nanomaterial and its application in controlling crop chilling injury, belonging to the field of chilling agent technology. The invention utilizes a mixture of monomers (N-isopropylacrylamide and N-tert-butylacrylamide), a crosslinking agent, a surfactant, and a MoS2 dispersion, heated for a period of time; subsequently, an initiator is added, and the reaction continues for a period of time; after the reaction is completed, the mixture is cooled and dialyzed to obtain the thermosensitive molybdenum disulfide composite nanomaterial. This composite nanomaterial is dispersed in water to prepare a suspension, which is then applied to crops such as corn and soybeans via foliar spraying, thereby enhancing their cold resistance and increasing the biomass of chilled crops such as corn and soybeans. The method of this invention is simple and efficient, and has good application prospects.

This application relates to the field of fertilizer technology, specifically to a special fertilizer for improving the cold and drought resistance of wheat and its preparation method. The special fertilizer is composed of the following raw materials in parts by weight: 25-30 parts urea, 15-20 parts diammonium phosphate, 10-15 parts potassium sulfate, 8-10 parts humic acid, 5-7 parts attapulgite, 1-2 parts borax, 1-2 parts zinc sulfate, 20-25 parts well-rotted sheep manure, and 0.5-1 parts compound microbial agent. The process includes the following steps: melting and mixing urea and diammonium phosphate, adding potassium sulfate and attapulgite powder and stirring to obtain mixture A; mixing mixture A, humic acid, borax, zinc sulfate, well-rotted sheep manure, and compound microbial agent, granulating, cooling, and drying to obtain a special fertilizer for improving the cold and drought resistance of wheat. The special fertilizer prepared by this application can improve the cold and drought resistance of wheat.

This invention discloses a low-temperature instant crosslinking rubber-type cold-resistant polyethylene protective film and its preparation method, belonging to the field of protective film technology. The protective film is prepared by coating a polyethylene base film with a two-component rubber pressure-sensitive adhesive and then crosslinking it at low temperature. Component A is a ternary compound rubber phase, and component B is an aliphatic triisocyanate crosslinking phase, combined with synergistic additives to achieve rapid low-temperature catalytic crosslinking. The preparation process employs a two-component synchronous delivery, static mixing, slot coating, and low-temperature curing at 70-90℃, completing crosslinking in 3-5 minutes, significantly reducing energy consumption. The resulting protective film exhibits excellent initial tack and holding power, shows no brittleness or residue at -30℃, has a gel content of over 91%, and demonstrates excellent low-temperature protective performance. This invention's process is safe, efficient, and suitable for industrial production, meeting the requirements for product surface protection in low-temperature environments.