Technology for preparing composite package cushioning material from rice straw fibers

Abstract

The invention discloses technology for preparing a composite package cushioning material from rice straw fibers. The technology comprises the following technological steps of: (1) pretreating, namely drying and removing impurities; (2) cutting up, namely cutting the rice straw obtained in the step (1) into straw particles with the diameter of 5 to 8mm, and mixing with partial fine rice straw fibers which are cut into the diameter of around 0.1mm and the length of 5mm; (3) performing surface pretreatment, namely soaking for 10 minutes by using aqueous solution of NaOH, filtering and drying for later use; (4) mixing, namely adding polymer into the mixed fibers subjected to surface treatment according to a mass ratio of 2-5:6-9, and adding a proper amount of mildew preventive and foaming agent for uniformly mixing; (5) molding, namely adding the uniformly mixed mixture into a mold, molding and demolding; and (6) drying. The invention also discloses a formula and technology for preparing 35 percent urea resin. The urea resin is a raw material for preparing the polymer in the composite package cushioning material prepared from the rice straw fibers. The technology for preparing the composite package cushioning material has the advantages of simple process flow and no side products. The produced finished product has the advantages of good degradation performance, good elastic resilience, high unit density and compression strength, and low density.

Description

technical field [0001] The invention relates to a preparation process of a foam packaging cushioning material, in particular to a process for preparing a composite packaging cushioning material by using rice straw fibers. Background technique [0002] Polystyrene (PS) has become one of the four general-purpose plastics today due to its characteristics of hard quality, transparency, rigidity, electrical insulation, low hygroscopicity, low price, and easy dyeing. It is mainly used in packaging, construction, medicine, In industries such as electronics, automobiles, home appliances, instruments, footwear, daily necessities, furniture, and toys, the production and consumption are on the rise year by year. At present, with the improvement of people's living standards, more and more waste polystyrene foams are produced, which makes "white pollution" more and more serious. This kind of plastic products are discarded after use and become garbage. This kind of garbage is light in wei...

AI Technical Summary

Problems solved by technology

At present, with the improvement of people's living standards, more and more waste polystyrene foams are produced, which makes "white pollution" more and more serious. This kind of plastic products are discarded after use and become garbage. This kind of garbage is light in weight and large in size. , anti-aging, anti-corrosion, stable chemical properties, not easy to be degraded by microorganisms, after entering the soil, the soil quality will deteriorate, and it will be treated by burning. Burning will produce carbon dioxide and other harmful gases, and will also cause adverse room temperature effects and pollute air, causing great pollution to the environment

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