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A tandem, mixing technology, applied in the processing field of rubber molding, can solve the problems of uneven mixing of compounding agent and base rubber, complicated equipment and process, and low quality of rubber materials, so as to avoid uneven mixing and increase Temperature control range, the effect of improving production efficiency
Active Publication Date: 2015-03-25
QINGDAO UNIV OF SCI & TECH
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[0004] The invention mainly solves the technical problems in the existing continuous mixing method, such as many processing steps, complex equipment process, large production investment, high energy consumption and low rubber q
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Embodiment 1
[0022] In this embodiment, the formula of all-steel radial tire tread rubber is taken as an example for illustration. The tandem rubber continuous mixing method involved specifically includes the following process steps:
[0023] (1) Using a filling factor of 65±5%, based on the specific model of the upstream internal mixer 1 and the production formula of the mixed rubber, the mass of various materials is calculated and weighed for later use. The working parameters of the upstream internal mixer 1 are: the rotor speed is 60±15r / min, preferably 65±3r / min, the temperature control is 50±10°C, preferably 45±3°C, and the pressure of the top bolt is 0.6±0.05MPa; the materials include Base glue and compounding agent;
[0024](2) Put the matrix rubber weighed in step (1) into the upstream internal mixer 1 for 40 ± 10s, preferably 35 ± 3s of masticating to form masticated rubber, and then add compounding agents including carbon black N330, zinc oxide , anti-aging agent RD, plasticizer...
Embodiment 2
[0032] In this example, taking the formula of all-steel radial tire tread rubber as an example, the serial rubber continuous mixing method involved in Example 1 is compared with the traditional internal mixer mixing method.
[0033] The specific process steps of the traditional internal mixer mixing method are:
[0034] (1) adopt the filling factor of 65 ± 3%, based on the specific model of the internal mixer and the production formula of the mixed rubber described in Example 1, calculate the quality of various materials and weigh them for later use, set The working parameters of the internal mixer are: the rotor speed is 65±3r / min, the temperature control is 45±3℃, and the pressure of the top bolt is 0.6±0.05MPa;
[0035] (2) Put the natural rubber weighed in the step (1) into the internal mixer and carry out 35 ± 3s masticating, then add carbon black N330, zinc oxide, antioxidant RD, plasticizer A, stearic acid respectively SA for mixing; when the temperature of the mixed r...
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Abstract
The invention belongs to the technical field of a processing method of rubber forming, and relates to a continuous serial-type rubber mixing method. The method comprises the steps of calculating the mass of each material and setting working parameters of an internal mixer according to a specific model of the internal mixer and a production formula of rubber compound; mixing matrix adhesive and various accessory ingredients in the internal mixer, and discharging the formed primary mixed rubber into a storage hopper when the temperature of the rubber reaches 95+/-5 DEG C; pressing the primary mixed rubber into an opposite-direction dual-rotor continuous internal mixer by adopting a pressure weight through a feeding opening, carrying out the temperature-control two-sectional mixing for the primary mixed rubber by virtue of the cooperation of five sections of cooling passages, and discharging a formed semi-finished product rubber sheet through a discharging opening; adding an accelerator and sulfur after the semi-finished product rubber sheet is pressed by an open mill, and then carrying out the subsequent relevant process and test comparison analysis. By adopting the method, the continuity of the mixing technology is realized, non-uniformity for mixing small materials and rubber can be avoided, the production efficiency is improved, the quality of rubber products can be guaranteed, the energy loss in the mixing process can be reduced, and the manpower and material resource can be saved.
Description
Technical field: [0001] The invention belongs to the technical field of processing methods for rubber molding, and relates to a serial rubber continuous mixing method, which is applicable to the mixing of rubbers with different formulas. Background technique: [0002] The rubber industry is one of the important basic industries of the national economy. It not only provides people with daily and medical light industrial rubber products that are indispensable in daily life, but also provides heavy and emerging industries such as mining, transportation, construction, machinery, and electronics. All kinds of rubber production equipment or rubber parts, and the quality of mixing technology has a decisive effect on the quality of rubber processed products. Therefore, the production of low energy consumption, high efficiency and high quality rubber is a problem that the rubber industry must constantly solve. At present, rubber mixing methods can be roughly divided into open mill mi...
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