Packing emulsion atomization drying continuous production equipment

Abstract

The invention belongs to the technical field of rubber wet-method mixing equipment, and relates to packing emulsion atomization drying continuous production equipment which comprises a main structure, wherein the main structure comprises a first water storage tank, a stirring tank, a conveying weighing device, a continuous liquid-phase grinding machine, a packing latex stirring tank, a pretreatment latex tank, a high-pressure atomization ejection device, a roller scraper device, a second water storage tank, a secondary double-screw dehydration device, a drying device and a double-rotor continuous mixing machine, wherein the continuous liquid-phase grinding machine is used for grinding and crushing an aqueous packing dispersion; the high-pressure atomization ejection device is used for performing high-pressure atomization ejection on packing emulsion-natural latex slurry; the secondary double-screw dehydration device is used for performing drying, primary dehydration and secondary dehydration on packing-natural latex slurry, and masterbatch pieces are extruded by using a molding machine; the masterbatch pieces are conveyed into the drying device; and masterbatch and a complexing agent are continuously and quantitatively adding into rubber by using the double-rotor continuous mixing machine, continuous mixing is carried out, and mixed rubber is extruded out.

Description

Technical field: [0001] The invention belongs to the technical field of rubber wet mixing equipment, and in particular relates to a continuous production equipment for filler emulsion atomization and drying, which combines sudden temperature crushing of filler latex with a dispersion drying process to realize uniform dispersion and distribution of filler in latex , to prevent the aggregation of the filler after dispersion, to prepare a well-distributed and dispersed filler emulsion, and then to prepare a rubber composite material with excellent mechanical properties, significantly improved comprehensive mechanical properties and dynamic mechanical properties. Background technique: [0002] With the continuous advancement of science and technology and the continuous development of material science, the materials used by human beings are also updated and improved. Polymer materials and their products have occupied various fields, industries and departments of life, as large as ...

AI Technical Summary

Problems solved by technology

[0003] The most critical process in the preparation of rubber composite materials is mixing. The essence of the mixing process is to mix various compounding agents into raw rubber to make a uniform quality rubber compound. It is also the process of mixing rubber with various compounding agents. It can be said that mixing is the first and most important process in the processing of rubber products, and the quality of the rubber compound directly affects the quality, performance and service life of rubber products; at present, China's rubber Industrial mixing mostly adopts the multi-stage mixing method of internal mixer. Due to the high elastic properties of polymers, the mixing process is a process of continuous heat generation and temperature rise. To achieve the purpose of uniform dispersion of compounding agents, the mixing process has to be repeated, which has an irreversible impact on the properties of rubber products; in order to improve the mixing efficiency, new mixing methods and processes emerge in endlessly, including low-temperature one-time method, series Mixing and continuous mixing, these new mixing technologies have a good balance effect on mixing efficiency and mixing quality, but the dispersion level of fillers in these mechanical mixing technologies cannot reach the set level, Even if the mixing time is prolonged, the mixing quality of the compound will not be greatly improved

In order to obtain better mixing quality, people try to inject new energy such as ultrasonic waves and solid dry ice into the mixing process to break the aggregates of fillers and improve the quality of rubber mixing. Through research, it is found that these new technical means are only to a certain extent The degree of microscopic dispersion of fillers has been improved, but there is still a certain gap with the requirements of high-end rubber products. For the preparation of emerging fillers / rubber composites, mechanical mixing techniques cannot meet the needs of filler dispersion; based on the excellent performance of emerging fillers The physical properties and high specific surface area show its great potential in rubber reinforcement. As a rubber nanofiller with very high reinforcement efficiency and effect, it can endow rubber materials such as electrical conductivity, thermal conductivity and gas barrier properties, and improve rubber The dynamic properties of materials have special significance for improving the performance and function of rubber products, and provide a way for the development of high-performance rubber products

The industrial application of emerging fillers has not been seen in the current rubber products. The main reasons are as follows: First, it is difficult for emerging materials to be mixed into the rubber matrix by mechanical blending, and the dispersion of emerging materials in the rubber matrix is ​​very poor. Poor, there are many filler aggregates that are prone to large particles, resulting in a significant decline in the performance of rubber composites; second, the use of environmentally harmful organic solvents in the solution blending process of emerging materials is inevitable, and the type of rubber The difference from the reducing agent may cause the degradation of the rubber, which seriously reduces the performance of the compound

[0004] At present, the wet preparation of rubber nanocomposites mainly uses chemical methods to process emerging materials and latex emulsions, and uses stirring to evenly disperse nanofillers in latex, and then flocculates to obtain wet-mixed rubber. In this method and process The addition of chemical reagents has a great impact on the properties of rubber compounds, reducing the quality and service life of rubber products; for example, the preparation method of wet mixing natural rubber materials disclosed in Chinese patent 201110064299.3, which has carried out traditional mixing technology Improvement: adding acetic acid to the prepared latex solution for flocculation, washing and dehydrating by a washing machine, and then drying in a drying oven for 4-6 hours. After drying, the mixed rubber of natural rubber can be obtained

There are unavoidable defects in strong acid flocculation, which will not only affect the health of operators, but also corrode equipment. The long-term drying after flocculation is likely to produce acid gas that affects the environment. If the strong acid is not cleaned, it will also affect the subsequent vulcanization time. Lower vulcanization will cause a vulcanization time lag

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