3results about How to "With insulation" patented technology

The invention discloses a fiber foamed concrete and a preparation method thereof. The fiber foamed concrete comprises the following raw materials in parts by weight: 5290 parts of cement, 4965 parts of water, 1.361 part of foaming solution, 1.2964 part of fly ash and 10 parts of fiber. The preparation method comprises the following steps: proportionally weighing the components; sequentially adding the cement and fly ash into a stirrer, proportionally weighing the water, uniformly stirring the mixture by the stirrer, and adding the fiber; preparing and adding the foaming solution; gradually adding the foam into the mixture, and continuously stirring until all the components are uniformly mixed; pouring the mixture into a mold on which lubricating oil is brushed, and curing in a curing chamber; after 24 hours, removing the mold; and respectively curing for 3 days, 7 days and 28 days for experimental detection. The fiber foamed concrete has the advantages of favorable thermal insulation property, favorable compression resistance and favorable bending resistance, and is applicable to a railway bed strengthening layer.

This invention relates to a high-temperature resistant foam ceramic microwave absorbing material and its preparation method, belonging to the technical field of microwave absorbing stealth materials. The preparation method of the high-temperature resistant foam ceramic microwave absorbing material includes the following steps: (1) mixing silicon carbide and calcium carbonate into a mixed powder; (2) mixing the mixed powder, borax, sodium silicate, potassium carbonate, polyvinyl alcohol, sodium carboxymethyl cellulose, and water to form a slurry; (3) impregnating a foam ceramic component with the slurry, followed by drying and sintering to obtain the high-temperature resistant foam ceramic microwave absorbing material. The foam ceramic microwave absorbing material prepared by this invention retains the original properties of the foam ceramic to the maximum extent, and exhibits excellent microwave absorption performance, especially since high temperature of 850℃ has no effect on its microwave absorption performance, indicating that the foam ceramic microwave absorbing material prepared by this invention has excellent microwave absorption performance and high-temperature resistance.

The utility model belongs to lithium battery heat preservation technical field discloses a battery heat preservation box, including box body and heating device, the box body is by upper box body and lower box body is composed, the upper box body and lower box body are through magic paste sticky buckle and are composed box body, the heating device is by heating blanket, heater is composed, the heating blanket with heating ware is connected through electric wire, the heater includes temperature controller, electric wire, wire ear, is equipped with the fuse on the electric wire. The utility model battery heat preservation box includes box body and heating device, and the box body adopts three -layer structure, has waterproof, moisture -proof, fire -retardant, the efficacy of heat preservation, is equipped with independent heating blanket in the box body to the battery and is covered and is wrapped, controls the temperature in the box body through temperature controller, ensures that the temperature in the heat preservation box meets the technical requirement. The utility model battery heat preservation box can ensure that the temperature in the heat preservation box is not less than 0 DEG C for 24 hours under the environment of -40 DEG C, can good protection battery normal use under low temperature environment.