47results about How to "Little influence from external conditions" patented technology

The invention relates to an environment-friendly wallpaper adhesive and a preparation method thereof. The environment-friendly wallpaper adhesive comprises an agent A and an agent B, wherein the agent A is prepared by processing the following raw materials in parts by weight: 60-80 parts of modified defatted soybean meal paste, 6-8 parts of water-soluble glucan, 4-6 parts of leveling agent, 2-3 parts of organic bentonite and 1-3 parts of assistant which is a mixture of at least two of flame-retardant powder, nano negative ion powder and antistatic agent; the component B is prepared by processing the following raw materials in parts by weight: 8-15 parts of propolis powder, 1-3 parts of antioxidant, 30-40 parts of substrate, 1-2 parts of emulsifier, 40-60 parts of 75-85% of ethanol solvent by volume and appropriate pH regulator; the substrate is any one of natural rubber, vitamin derivative and modified starch; the pH of the agent B is 6-8. In the environment-friendly wallpaper adhesive provided by the invention, the raw materials of the agents A and B are reasonably selected and in proper compatibility; compared with existing glue, the prepared adhesive has the advantages of excellent water resistance and gluing property, good uniformity in drying, high flatness and excellent antibacterial property, antistatic property and flame retardance.

The invention discloses an axis deviation detection device and detection method and belongs to the technical field of detection devices. The axis deviation detection device comprises a locating ring and detection heads, a plurality of through holes are opened in the side wall of the locating ring along the longitudinal direction, the number of the detection heads is the same with that of the through holes, the detection heads are through arranged in the through holes in a one-to-one correspondence mode, the inner detection heads of the detection heads are con-cyclic and overlapped with the circle center of the locating ring, and the inner detection head of each detection head is capable of moving in the corresponding through hole. The detection method is realized based on the detection device. When using the detection device and detection method, an axis to be detected passes through the center of the locating ring, each detection head is moved to enable the inner detection head of each detection head to prop against the axis to be detected, the transverse coordinate and longitudinal coordinate of the center of the axis to be detected away from the center of the locating ring are obtained through calculating according to the displacement of the inner detection head of each detection head, and the eccentric nature of the axis to be detected can be confirmed according to the transverse coordinate and longitudinal coordinate. The axis deviation detection device is simple in structure, and the detection device and detection method are rarely influenced by external conditions.

The invention relates to a preparation method for an antibacterial mould-proof environment-friendly chipboard. The chipboard comprises an upper surface layer, a core layer and a lower surface layer which are bonded and subjected to hot pressing and recombination. The preparation method comprises the following steps that firstly, the core layer is prepared, (1) raw materials are prepared; (2) pretreatment is conducted on the raw materials; (3) the materials are stirred; and (4) mixed materials obtained in the step (3) are subjected to blank packing, primary hot pressing and cooling, and the core layer is obtained; and secondly, the upper surface layer and the lower surface layer are prepared and are both made of single plates with the thickness of 0.8-1.0 mm, the faces, attached to the core layer, of the upper surface layer and the lower surface layer are evenly coated with an appropriate number of adhesives, then the upper surface layer and the lower surface layer are combined with the core layer, and through secondary hot pressing, cooling, edge cutting and polishing procedures, the antibacterial mould-proof environment-friendly chipboard is obtained. Raw materials of an adhesive A and an adhesive B of the environment-friendly adhesives used in the preparation method are selected reasonably, compatibility is appropriate, the prepared adhesives have excellent water resistance and bonding performance, and the drying process is good in uniformity, the smoothness is good, and excellent antibacterial performance, antiatativity and flame resistance are also achieved.

The invention discloses a dynamic water level detector based on sound wave attenuation variation. The structure of the dynamic water level detector comprises a signal conversion body, a signal transmitter, a digital display screen, a sound wave attenuation detecting device and an embedded protection tube, wherein the signal conversion body is of a cylindrical structure, the signal transmitter is arranged above the signal conversion body and is electrically connected with the same, the digital display screen is embedded on the front surface of the signal conversion body, and the sound wave attenuation detecting device is arranged below the signal conversion body and is electrically connected with the same. By means of the arranged sound wave attenuation detecting device, the dynamic water level detector detects the water level in real time by utilizing the principle of sound wave attenuation variation based on the water level, especially can quickly and precisely detect the dynamic water level since the dynamic water level is based on material reflection waves, is less susceptible to external conditions in detection, and is suitable for water level detection under various conditions.