A kind of method for preparing rubber composite material by blending
A composite material and blending technology, which is applied in the field of material preparation, can solve the problems of weak oxidation resistance, high hardness, and no mention of material mechanical properties, and achieve simple process steps, high mechanical properties, excellent aging resistance and corrosion resistance effect of ability
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Embodiment 1
[0028] Step 1: EUG rubber mixing treatment
[0029] Experiments have found that EUG crystallizes at 10°C, is solid at room temperature, and has high hardness. It begins to show elasticity and elongation at 40-50°C, softens at 60-100°C, has plasticity and high strength, and 120°C It is almost liquid and can recover its original properties after cooling. In order to study the feasibility of the rubber mixing process, four temperature points of 60°C, 80°C, 90°C, and 100°C were used in this experiment. After adjusting the set temperature, EUG was added to the mixer, and the mixing was From thick to thin, and then from thin to thick, reduce the thickness 10 times, make a triangle bag 8 times, and stop the machine when the EUG is finished. Table 1 shows the comparison of EUG raw rubber mixing time, temperature and effect. It can be seen from Table 1 that the optimum mixing temperature for EUG is 80°C. The temperature is low, EUG is difficult to mix evenly, and because petroleum e...
Embodiment 2
[0038] according to figure 1 The process and the technology of embodiment 1 and preferred process parameters carry out the preparation of rubber composite material, and concrete formula is as follows:
[0039]
[0040] The dosage ratio of NR to EUG is 85:15, and the dosage of GE varies from 2%, 5%, 10%, 12%, and 15%, that is, the percentage of GE in the total mass of NR+EUG. The weight average molecular weight of EUG is 1.79×10 5 , the weight average molecular weight of NR is 1.45×10 5 .
[0041] Rubber composite materials with different GE contents were prepared respectively, and the properties of the obtained materials were tested before and after the 72-hour heating aging test, and Table 3 and Figure 5 Material property data when graphene content changes in the formula shown, wherein table 4 and Image 6 It is the microscopic topography of the formula material and the experimental data of thermogravimetric analysis.
[0042] Table 3 Performance comparison of compos...
Embodiment 3
[0050] On the basis of the experiment on the influence of the GE content in Example 2, the influence of the EUG content was further investigated. According to the process of Examples 1 and 2 and the optimized parameters, the formulations of NR+EUG and NR+EUG+GE (10wt%) were respectively used System, wherein 10wt% in the NR+EUG+GE (10wt%) system is the percentage of GE accounting for the total mass of NR+EUG. The mechanical properties of the material obtained when EUG accounts for the percentage of the total amount of NR+EUG are changed. The results like Figure 4 As shown, it can be seen from the figure that when EUG accounts for more than 10wt% of the total NR+EUG, the tensile strength and hardness of the NR+EUG+GE composite material are significantly improved, and both are higher than the NR+EUG formulation system.
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