3results about How to "Guaranteed foaming effect" patented technology

This invention discloses a method for preparing low-density, high-filler SPC flooring. The method is characterized by a raw material formulation comprising the following components in the indicated weight proportions: 100 parts graft-modified PVC resin, 300-350 parts filler, 9-12 parts heat stabilizer, 3-5 parts melt processing modifier, 3-5 parts reinforcing and toughening modifier, 1-2 parts external lubricant, 1-2 parts internal lubricant, 2-5 parts chemical foaming agent, and 2-5 parts foaming aid. The graft-modified PVC resin is prepared by replacing the chlorine atoms in PVC with p-aminothiophenol, followed by an amidation reaction between a diacid or polyacid and an amino group. Its advantages are: 1) It improves the melt strength and expandability of the PVC resin, ensuring foaming performance under high filler content. Compared with ordinary SPC flooring, the flooring product has lower density and lighter weight, higher hardness, and lower overall formulation cost compared to ordinary low-density SPC flooring. 2) The process is simple, and the product has high controllability.

The invention provides a high-performance soybean protein / glucan graft as well as a preparation method and application of the high-performance soybean protein / glucan graft in stabilizing anthocyanin, and belongs to the technical field of plant protein modification processing. Comprising the following steps: (1) dissolving soybean protein isolate and glucan with ultrapure water, adjusting the pH value to be neutral, and carrying out a primary reaction to obtain a mixed solution 1; (2) sequentially carrying out low-temperature damp-heat reaction and ultrasonic-assisted high-temperature damp-heat reaction on the mixed solution 1, continuously circulating for multiple times, and terminating the circulating reaction to obtain a mixed solution 2; and (3) adjusting the pH value of the mixed solution 2 to be acidic, carrying out solid-liquid separation, taking supernate, and drying to obtain the soybean protein / glucan graft. According to the method, the high-performance soybean protein / glucan graft can be synthesized by utilizing a method of ultrasonic synergistic damp-heat circulation continuous reaction, the browning degree is controlled, the Maillard reaction kinetics is enhanced, and the surface functional characteristics and anthocyanin packaging efficiency are enhanced, so that the method has a wide application prospect.

The utility model belongs to the technical field of foam production, and particularly relates to a uniform foaming device which comprises a foaming bin, an air inlet pipe, a stirring shaft and a motor, and further comprises an exhaust hole, a mounting frame and sealing plates, the stirring shaft is rotatably mounted on the air inlet pipe, the sealing plates are mounted on opposite ports of the air inlet pipe and the stirring shaft, and the motor is mounted on the mounting frame. The motor is connected with the stirring shaft through meshed gears, a plurality of exhaust holes are formed in blades of the stirring shaft, and the stirring shaft is rotationally mounted on the mounting frame; through the cooperation of a plurality of exhaust holes which are formed in the blades of the stirring shaft and communicated with the grooves in the stirring shaft and the stirring shaft, uniform heating of raw materials by steam is achieved, the foaming efficiency and the foaming effect of the device are guaranteed, the working effect of the exhaust holes is guaranteed by forming the exhaust holes in the side walls of the blades of the stirring shaft, and the service life of the stirring shaft is prolonged. And by arranging the matched sealing plates, quantitative intermittent conveying of steam is achieved.