32results about How to "High shielding rate" patented technology

Provided is a heat ray shielding material that has superior visible light transmittance, radio wave transmittance, and light resistance, can shield infrared rays across a wide band, and has a high infrared ray shielding rate. The heat ray shielding material has a heat ray shielding layer that contains silver plate particles and metal oxide particles. Preferable are: an embodiment wherein the metal oxide particles are tin-doped indium oxide particles; an embodiment wherein the silver plate particles and the metal oxide particles are mixed and dispersed in a binder in the heat ray shielding layer; and an embodiment wherein a silver-plate-particle-containing layer that contains the silver plate particles and a metal-oxide-containing layer that contains the metal oxide are laminated in the heat ray shielding layer.

The invention discloses barium sulfate / polyvinyl alcohol composite fiber and a preparation method thereof and non-woven fabric. The composite fiber consists of the following components in percentage by mass: 20-80% of barium sulfate and 80-20% of polyvinyl alcohol. The composite fiber is prepared by blending superfine barium sulfate and polyvinyl alcohol and performing a wet spinning technology; and the prepared non-woven fabric has the characteristics of good resistance to ray radiation, good air permeability, smooth hand feeling, gentle gloss and wearing comfort and softness. The fineness of the composite fiber is 1.5-5dtex, the dry breaking strength is 2.0-8.0cN / dtex, the dry elongation at break is 15-40%, and the initial modulus reaches 60-100cN / dtex. The shielding rate of the non-woven fabric with fixed weight of 500g / m<2> and prepared from the composite fiber against medium- and low-energy X rays can exceed 70%, and the shielding rate of protective clothing can be further improved by adjusting the thickness or layer number of the fabric.

A transmittance-variable device is disclosed herein. In some embodiments, the transmittance-variable device includes a first guest host layer, a second guest host layer, and a phase difference element disposed between the first and second guest host layers, wherein each of the first and second guest host layers comprise a liquid crystal host and a dichroic dye guest, and the liquid crystal hosts are capable of being horizontally oriented such that their optical axes are horizontal to each other. The transmittance-variable device can switch between a clear state and a black state, can exhibit high transmittance in the clear state and a high shielding rate in the black state, and can exhibit a high contrast ratio even at the inclination angle. Such a transmittance-variable device can be used in architectural or automotive materials, or eyewear such as goggles for augmented reality experience or sports, sunglasses or helmets.

The invention discloses a transparent glass thermal insulating coating which comprises the following components in parts by weight: 30-50 parts of crylic acid modified organic silicon resin, 15-20 parts of low viscosity high chlorinated polyethylene resin, 5-10 parts of nanometer titania, 2-3 parts of nano-zinc oxide, 20-30 parts of n-butyl acetate, 2-5 parts of n-butyl alcohol and 2-5 parts of cyclohexanone. The coating disclosed by the invention is relatively high in shielding rate in an infrared area, good in transmissivity in a visible light area, and remarkable in absorption effect in an ultraviolet area, the transmissivity of visible light is greater than 80%, the shielding rate of infrared light is greater than or equal to 61%, the energy-saving effect is remarkable, the temperature can be reduced by 5-10 DEG C, and the energy can be saved by 20-30%. The coating is good in adhesion to surfaces of glass products, has a self-cleaning function, is free of charge, water or dust on the surface, and can be applied to coating on surfaces such as door and window glass, automobile glass and glass curtain walls of high-rise buildings.

The invention discloses a neutron shielding material with flame-retardant and heat-insulating properties and a preparation method thereof. It is composed of Wuhe powder surface modifier; its preparation method is to add methyl vinyl silica gel and vulcanizing agent Shuangerwu into the open mill for mastication, and then mix it with neutron absorber material, flame retardant functional filler, heat insulation The mixture of functional fillers and powder surface modifiers is commonly added to the vacuum mixer for banburying, and finally the banburying product is added to the flat vulcanizer to obtain a neutron shielding material with flame-retardant and heat-insulating properties; the material has thermal Materials with neutron shielding performance have good flexibility, flame retardancy, heat insulation performance, and mechanical strength. They can not only meet the peripheral protection of nuclear instruments and equipment with complex shapes, but also are good core materials for neutron protective clothing.

The invention discloses a liquid crystal tunable filter and a configuration method thereof. The filter includes several cascaded Leo configuration filter units, and the Leo configuration filter unit consists of polarizers on both sides and a middle A birefringent optical element is formed, wherein part or all of the Leo configuration filter units are combined in two consecutive cascades or three consecutive cascades to form a combined unit. The merge method is stacked or fan merged. The birefringent optical element is a liquid crystal tunable wave plate, a fixed wave plate or a combination of a liquid crystal tunable wave plate and a fixed wave plate. The liquid crystal tunable filter of the present invention has the advantages of high pass rate, narrow half-width, high shielding rate, adjustable spectral range, strong stability, no need for mechanical rotation, and real-time controllable advantages. It can be widely used in Imaging, biology, medicine, materials, optics, optoelectronics, astronomy and other fields.

The invention discloses an element gradient combined anti-radiation rubber product and a preparation method thereof, and aims to solve the problems that generally, all fillers of a conventional anti-radiation protection rubber product are mixed together and filled, the contents of different filling components are not high, the overall shielding effect can be degraded, if a shielding material is added, filler sedimentation or layering of different degrees can be caused in the product preparation process, and furthermore the physical and mechanical properties of a finished product can be also greatly degraded. The element gradient combined anti-radiation rubber product comprises N layers of single shielding layers compounded in a gradient manner, wherein N is a natural number; N is greater than or equal to 2. By adopting the element gradient combined anti-radiation rubber product disclosed by the invention, a uniform shielding effect on a wide-energy spectrum high-energy ray can be achieved, the shielding rate of gamma and X-rays is higher than 30%, and the product is friendly to human bodies and the environment. The element gradient combined anti-radiation rubber product is reasonable to design, convenient to use, good in anti-radiation effect, high in production efficiency and filler utilization rate, good in comprehensive shielding property, capable of meeting requirements on industrial, large-scale and on-batch production, relatively high in application value, and relatively good in application prospect.

The invention discloses a gamma-ray shielding material, belonging to the technical field of shielding materials. The gamma-ray shielding material is prepared from the following components in parts by weight: 5-90 parts of vanadium slag, 5-8 parts of epoxy resin, 3-5 parts of a curing agent and 30-240 parts of a volatile diluent, wherein the epoxy resin is bisphenol A type epoxy resin, the curing agent is synthetic resin, and the volatile diluent is one or more of alcohol compounds, ketone compounds and aromatic compounds. According to the gamma-ray shielding material, the problem that vanadium slag is difficult to be comprehensively utilized in the past is solved, a new way is opened for the utilization of the vanadium slag, and a very cheap raw material is found for the production of a gamma-ray protecting material; and the gamma-ray shielding material has the characteristics of low cost, simplicity in production and operation, no secondary pollution and the like.