254results about How to "Improve mechanical strength" patented technology

Magnetically and electromagnetically driven MEMS devices for reflecting light signals and for switching radio frequency (RF) signals are provided. In a preferred embodiment, a light reflecting device such as a mirror or micro-scanner comprises a plate operative to reflect light and at least two conductive flexural actuators connected to the plate and to a substrate and operative to impart a rotation or tilt motion to the plate under a force arising from the interaction of a current passing through the conductive flexural actuators and a magnetic field parallel to the substrate. An RF switch comprises a substrate and a membrane having a longitudinal dimension and a lateral dimension, the membrane positioned substantially parallel to and attached to the substrate and operative to provide at least two switching positions in response to actuation by a Lorenz force acting on it.

The invention discloses a thermoplastic light compound plate and the manufacturing method, characterized in that it comprises acupuncture fiber carpet dipped in double faced foam of thermoplastic glue liquid and thermoplastic glue liquid layer coated on the surface, the density of compound plate is 0.35-0.90g/cm3, the weight of fiber scattered in bunchiness is 15-45% of acupuncture fiber carpet. The merit of invention is very remarkable. Special super long fiber and bunchiness fiber with certain proportion are maintained in the material so that the mechanical performance of material can be improved. In addition, the material is provided with foam structure, very good effect of heat and sound insulation. The invention is also provided with environmental protection and recovery.

A carbon substrate for a gas diffusion layer that has a porosity gradient in a thickness direction thereof, a gas diffusion using the carbon substrate, an electrode and a membrane-electrode assembly for a fuel cell that include the gas diffusion layer, and a fuel cell including the membrane-electrode assembly having the gas diffusion layer are provided. The gas diffusion layer has improved water discharge ability and improved bending strength both in the machine direction and cross-machine direction.

The invention discloses a cleaning additive for glass bottles and a cleaning method of the glass bottles. The cleaning method and the cleaning additive are used for glass bottle cleaning by a primary alkaline bath and a secondary alkaline bath. The cleaning additive comprises a component A, a component B and a component C, wherein the component A comprises an organic phosphorus chelating agent, the component B comprises peroxide, the component C comprises a defoaming agent, the component A is added into the primary alkaline bath, the component B is selectively added into the primary alkaline bath, the component A and the component B are added into the secondary alkaline bath, and the component C is selectively added into the primary alkaline bath or the secondary alkaline bath. Based on the weight of alkaline solution in the primary alkaline bath or the secondary alkaline bath where the component is added, the adding amount of the component A is 0.05-5%, the adding amount of the component B is 0.1-0.5%, and the adding amount of the component C is 0-0.5%. The alkaline solution in the primary alkaline bath and the secondary alkaline bath is sodium hydroxide solution having a concentration of 1.5-3%. The cleaning additive and the cleaning method can achieve stable and good cleaning effects at a relatively low temperature that is usually 50-70 DEG C.

The invention discloses an anode tab, a soft packing lithium ion battery and a method for manufacturing the anode tab. The anode tab comprises an aluminum strip and a nickel strip; the central part of the aluminum strip comprises a tab sealing area; a layer of tab glue is attached on each of the upper and lower surfaces of the sealing area of the aluminum strip glue, wherein the width of the tab glue is more than that of the tab; the upper surface on the front part of the aluminum strip is in lap joint with the lower surface on the rear part of the nickel strip; the tab glue attached on the lower surface of the aluminum strip is extended to the lower surface of the lap-jointed part of the aluminum strip and the nickel strip. The soft packing lithium ion battery comprises a soft packing shell and the anode tab, wherein an anode tab socket of the soft packing shell and the anode tab are pressed and sealed through the tab glue attached on the anode tab. According to the anode tab, the soft packing lithium ion battery and the method for manufacturing the anode tab, the outer mechanical intensity of an node tab aluminum-to-nickel joint is enhanced by extending the tab glue, the nickel strip is guaranteed not to contact with electrolyte in a battery cavity; the service life of the soft packing lithium ion battery is prolonged and the labor cost of a manufacturer is reduced.

The invention relates to a preparation of MWCNTs reinforced zero-value nano iron/electrostatic spinning nano fiber felt, comprising the following steps: (1) dissolving MWCNTs into deionized water and carrying out ultrasonic dispersion; (2) dissolving polyvinyl alcohol (PVA) in deionized water, to prepare PVA solution and cooling to room temperature; (3) preparing soluble iron salt solution, NaBH4 or KBH4 solution; (4) dripping the MWCNTs solution into PAA water solution, adding PVA solution, adjusting the pH value to be 2.5 to 4.5, preparing nano fiber felt in a spinning manner, carrying out heat treatment, soaking into the iron salt solution, dripping the reducing agent, namely NaBH4 or KBH4 solution, to the brown-yellow fiber, rinsing by 2 to 5 times, drying for 24 hours to 36 hours, to provide the MWCNTs reinforced zero-value nano iron/electrostatic spinning nano fiber felt. The invention has simple method and easy operation, the used polymers are all environment-friendly high-molecular materials, thereby being applicable to industrial production; and the obtained fiber has high mechanical property and can be used for removing the pollutants in the environment.