33results about How to "Light weight per unit volume" patented technology

The invention belongs to the technical field of material manufacture and particularly relates to a processing method of high-strength wood. The processing method comprises the following three main steps: firstly fixing 100-150 parts of dried wood in a reaction kettle, and treating by using a chemical method; then placing the wood in a hot-pressing machine, controlling the temperature to be 110-130DEG C and the pressure to be 6-9MPa and carrying out hot pressing for 12-18 hours; finally, after processing the wood into a needed shape, and carrying out preservative treatment. Compared with the prior art, the processing method of the high-strength wood has the advantages that the method is simple and is easy in implementation, the manufactured wood has very-high mechanical strength, is low indensity and light in mass per unit volume, and has very-good application prospect in all the fields such as aerospace.

The invention relates to a spherical dielectric material, which is characterized in that it is a spherical structure, and the spherical structure includes an inner core, a conductive layer and a foam material layer; the inner core is made into a spherical shape, and the inner core is made of non-metallic material The conductive layer is arranged on the surface of the inner core, and the area covered by the conductive layer on the outer surface of the inner core is less than or equal to half of the outer surface area of ​​the inner core; the outer surface of the foam material layer is a spherical structure, and the foam The inner surface of the material layer wraps the outer surface of the conductive layer and the part of the surface of the inner core that is not covered by the conductive layer. The spherical dielectric material has the characteristics of simple structure, reasonable design, high structural strength, convenient processing and low production cost. The invention relates to a production method of a spherical dielectric material. The production method of the spherical dielectric material has the characteristics of high production efficiency, low cost, light weight and easy control of dielectric properties. The invention also relates to a Luneberg lens.

The invention discloses a plant polysaccharide sponge and a preparation method thereof. Using plant polysaccharides as raw materials, adding fillers, plasticizers, softeners, foaming agents, waterproofing agents and preservatives, after being melted and plasticized by the extruder at high temperature, the honeycomb sponge structure is obtained, and sent to the shaping mechanism for stable shaping , Extrude the sponge product through the mold. The products can be widely used in sanitary materials, medical dressings, agriculture, forestry and gardening, daily chemicals, construction, sofas and car cushions.

A ceramic grinding disc for food grinding processing solves the problems that for an existing grinding disc, foodstuff distribution is nonuniform, the diversion speed is low, discharging is difficult, feeding blocking is prone to be caused, and the grinding efficiency is low. The ceramic grinding disc is characterized in that the internally-concave conical surface of a fixed grinding disc body is provided with symmetrical step-shaped oblique teeth, and the internally-concave plane of a movable grinding disc body is provided with material guide grooves and trapezoid teeth; according to the movable grinding disc body, multiple trapezoid teeth which are independent and are mutually staggered form a grinding tooth array, and according to the fixed grinding disc body, multiple independent symmetrical step-shaped oblique teeth form the internally-concave conical grinding surface. The ceramic grinding disc for food grinding processing has the advantages that foodstuffs conduct dynamic collision with the movable grinding disc body and the fixed grinding disc body in an internally-concave conical grinding cavity between the movable grinding disc body and the fixed grinding disc body, the flowing velocity of the foodstuffs is increased under the synergistic action of extruding, breaking, shearing and grinding, secondary grinding is conducted through the two peripheral grinding surfaces of the movable grinding disc body and the fixed grinding disc body, the ground foodstuffs are filtered and flow out of grinding and screening gaps, the grinding efficiency and the grinding effect are improved, and the grinding disc is high in strength, good in wear-resisting property, long in service life and suitable for industrialized continuous production.