35results about How to "Stay porous" patented technology

In a non-aqueous electrolyte battery including a generating element having a separator bonded with an adhesive layer between a positive electrode plate and a negative electrode plate, the adhesive layer contains a fluorine-based polymer having a mass average molecular weight of from 500,000 to 1,500,000 and a melting point of from 165° C. to 175° C., and an inorganic-solid filler. The fluorine-based polymer is a polyvinylidene fluoride-based polymer such as a polyvinylidene fluoride homopolymer.

The invention discloses a method for preparing hollow titania microspheres, which comprises firstly preparing a silica particle prefabricated body, then introducing titania sol to cover the silica surface to form a silica-titania core-shell structure, and then passing The sodium hydroxide solution removes the silica core structure, and hydrochloric acid removes the impure structure of the microspheres, and finally obtains structurally stable titanium dioxide hollow microspheres after calcination. The hollow titanium dioxide microspheres provided by the invention not only have higher crystallinity and porosity, but also improve the electron transmission efficiency and the photocatalytic degradation effect on organic pollution, the preparation process is simple, the cost is low, and the synthesized microspheres have a stable structure.

The invention provides a preparation method of a titanium dioxide / active carbon composite nanofibrous membrane, characterized by comprising the following specific steps: dissolving polyacrylonitrile powder in N, N-dimethyl formamide; mixing titanium hydroxide gel with the polyacrylonitrile solution to obtain electrostatic spinning stock solution, and performing electrostatic spinning to get the composite nanofibrous membrane; placing the composite nanofibrous membrane in an electrically heated drying cabinet for being pre-oxidized; soaking the composite nanofibrous membrane in phosphoric acidor potassium hydroxide solution, washing the solution to be neutral by distilled water, and drying the composite nanofibrous membrane in the drying cabinet; and then, under nitrogen protection, heating up to 450-550 DEG C, and cooling to room temperature to get the titanium dioxide / active carbon composite nanofibrous membrane. The preparation method improves combination firmness between fibers and active ingredients of a photocatalyst, and also improves charge capacity of the fibers; the titanium dioxide / active carbon composite nanofibrous membrane is high in photo catalytic activity, good inabsorption effect, reproducible and simple in a reproduction method, and can use sunlight, so that operations are easy and operation cost is low.

The invention discloses a fireproof thermal insulation material used for a ship bulkhead as well as a preparation method and an application thereof. The fireproof thermal insulation material used for the ship bulkhead is prepared from the following components in parts by weight: 80-100 parts of xonotlite active slurry, 5-10 parts of reinforcing and toughening fibers, 5-8 parts of epoxy modified acrylic emulsion, 2-5 parts of water glass, 0.5-2 parts of a water repellent and 3-5 parts of multi-layer glass fiber cloth. The fireproof thermal insulation material used for the ship bulkhead can be compressed and moulded into a panel to be mounted in a cabin wall panel structure, so that the weight of a ship can be reduced, construction is convenient, fireproofing grade is improved; meanwhile, the fireproof thermal insulation material used for the ship bulkhead has good fireproof performance, low volume weight, high anti-compression and anti-bending strength, nonbreakable at long-term vibration load, low breakage rate and low moisture absorption, so that safety of the whole ship, safety of passengers and requirements of the ship on self weight and stability are guaranteed. The fireproof thermal insulation material used for the ship bulkhead also can be applied to fireproof separation on the ship, thermal isolation of a cabin and thermal insulation of a high-temperature pipeline.

The present invention belongs to the water treatment technical field and particularly relates to the preparation and use of a nitrogen and phosphorus removal carrier. The carrier of the present invention can provide the water environmental protection by the nitrogen and phosphorus removal treatment towards industrial wastewater and living sewage, which contain ammoniacal nitrogen and inorganic phosphorus, and towards pollution source or water in non-point source pollution. The nitrogen and phosphorus removal carrier of the present invention is characterized in that when a dry basis of the finished product is 200kg, and calculating according to weights, the components are as followings: 100kg to 120kg clinoptilolite powder, 90 percent of the exchange capacity over 100 meshes of which is more than 100cmol (plus) / kg; 50kg to 70kg land plaster, 90 percent of which is more than 100 meshes; 10kg industrial salt, the granular size of which is 2cm to 3 cm; 20kg common portland cement (labels of which is from 325 to 525); 2kg sawdust of pine tree; 100kg to 200kg complementary water. The present invention also discloses the preparation method and the application of the carrier.