6 results about "Equilibrium moisture content" patented technology

A drying storage according to the present invention can be carried or moved by a user or installed as a built-in in the user's residence, and can maintain an object in a dried state after drying the object to be dried, so that the convenience of use can be improved, wherein a desiccant material with an equilibrium moisture content suitable for the temperature and humidity conditions in which the drying storage is used, is applied so that the inside air of the drying storage is inhaled during a dehumidification operation to allow sufficient dehumidification and the outside air of the drying storage is inhaled during a regeneration operation to enable sufficient regeneration of the desiccant material.

A plurality of ventilation elements, vents, slots, or gap elements or similar features that are applied to, or machined into, one or more sides or faces of exterior siding products. When the exterior siding product is installed, the ventilation elements, vents, slots, or gap elements or similar features provide a built-in air and water gap to facilitate and increase water drainage and air circulation behind the siding or panel, thereby minimizing water storage in the space behind the product and lowering the equilibrium moisture content of the siding itself. The ventilation features are incorporated into the corresponding product in-line or during the manufacturing process, and do not require any further work during assembly or construction on-site (e.g., furring strips or other similar drainage mechanisms are not needed).

The present application relates to a kind of evaluation methods of tobacco moisture change ability and its application, the evaluation method includes: (1) respectively establishing the dry basis moisture content y of tobacco at n temperature points with humidity x changes scatter diagram, equation y=d+m×exp (-kx) is used to carry out fitting, respectively constant m, d and k are added, the equilibrium moisture content a of tobacco at each temperature point under 0 humidity is obtained;Wherein n≥3;(2) establish the equilibrium moisture content a of tobacco under 0 humidity with temperature t scatter diagram, equation a=f×t+c is used to carry out fitting, obtain the theoretical moisture content c under absolute zero, absolute dry condition and constant f, and with c as characteristic value, the moisture change ability of tobacco is evaluated.The evaluation method used in the present application comprehensively considers the influence of thermodynamics and dynamics, realizes more scientific and comprehensive evaluation to the moisture change ability of tobacco, and the method is high in accuracy and high in precision, can be widely applied in the screening of tobacco raw material.

The application provides a prestressed wood structure tension loss evaluation method and device, including the following steps: obtaining key parameters of the prestressed wood structure, and collecting temperature and relative humidity of a service environment; calculating the equilibrium moisture content of a wood surface based on the temperature and relative humidity, using a one-dimensional moisture diffusion model to combine the equilibrium moisture content as a time-varying boundary condition, and solving to obtain the internal moisture content distribution of the wood component; updating the elastic compliance of the wood according to the moisture content distribution, and combining the change rate of the prestress to calculate the elastic strain of the wood component. The application decomposes the total strain into four components with clear physical meaning, i.e. elasticity, pure creep, mechanical hygroscopic creep and hysteresis environmental strain, and sets differentiated parameters for the along-grain and across-grain components, and for the first time realizes quantitative analysis of the contribution of each factor in the evaluation, so that the main control mechanism of the prestress loss can be revealed, and direct theoretical basis and decision support for structure optimization design and preventive maintenance are provided.

To provide an optical laminate excellent in high-temperature durability, a picture display unit having the optical laminate and a manufacturing method of the optical laminate.SOLUTION: An optical laminate includes a first protective film, a polarization element and a high retardation film in this order. An absolute value of a photoelastic coefficient at a temperature of 23°C of the first protective film is 8×10-12 Pa-1 or less. A moisture content of the polarization element is equal to or higher than an equilibrium moisture content at a temperature of 20°C and a relative humidity of 20% and equal to or lower than an equilibrium moisture content at a temperature of 20°C and a relative humidity of 48%. An in-plane retardation value Re[550] at a wavelength 550nm of the high retardation film is 3000 to 30000 nm inclusive. An angle formed by a slow axis of the high retardation film and an absorption axis of the polarization element is 40° to 50° inclusive.SELECTED DRAWING: None

This invention provides a polarizing plate that suppresses the decrease in transmittance under high-temperature conditions. The polarizing plate includes a polarizing element in which dichroic pigments are adsorbed onto and oriented in a polyvinyl alcohol-based resin layer, and a transparent protective film laminated on at least one side of the polarizing element. The polarizing element and the transparent protective film are bonded together by an adhesive layer formed from an adhesive containing a quaternary ammonium salt. The moisture content of the polarizing element is above an equilibrium moisture content of 30% relative humidity at 20°C and below an equilibrium moisture content of 50% relative humidity at 20°C.