Multifunctional nano-ZnO reinforced rubber
A multi-functional technology for reinforcing rubber, applied in fibrous fillers, dyed low-molecular organic compound treatment, dyed organic silicon compound treatment, etc., can solve performance bottlenecks, can not meet the performance requirements of rubber parts, etc., to improve service life, The effect of increasing the strength of rubber and making it difficult to coalesce
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example 1
[0009] Example 1: Reinforced rubber formulation and preparation process
[0010] The mastication of nitrile rubber is different from that of general-purpose rubber. It requires low temperature, small roller distance, and low-capacity thin pass method, so as to effectively obtain a certain degree of plasticity. Under normal temperature conditions, masticate the nitrile rubber raw rubber on the open mill for about 10 minutes until it is covered with rolls. The temperature of the roll is 45-55°C. Note that the temperature of the front roll of the double-roller plastic mixer must be about 10°C higher than the temperature of the rear roll, and the roll distance is 1mm. Put the masticated nitrile rubber in the air for 2 to 6 hours before kneading. When mixing nitrile rubber, low-temperature mixing is used, and the roll temperature is generally 40-60 °C. Put the 67% nitrile rubber after mastication on the mixer, slowly add 8% modified nano-ZnO prepared in the above process after se...
example 2
[0011] Example 2: Modification of Nano ZnO
[0012] The multifunctional nano-ZnO reinforced rubber formula provided by the invention is characterized in that the nano-material is modified by spraying with a silane coupling agent and an emulsifier OP-10 during the experiment. The contents involved in the experiment include: surface modification and anti-aggregation mechanism, selection and synthesis of surfactants, matching of dispersants, etc. The main principles of the design are to reduce the surface energy state of the particles, eliminate the surface charge of the particles, and improve the affinity between the particles and the organic phase.
[0013] Nano-ZnO modification steps are as follows: under the temperature condition of 200℃~210℃, dry for 1.5h to fully dry the active nano-auxiliaries; Silicon) propyl] - tetrasulfide, or emulsifier OP-10 is the condensation product of alkylphenol and ethylene oxide, the volume ratio is 20:1; under the condition of uniform stirrin...
example 3
[0014] Example 3: Reinforcing effect of nano ZnO on rubber
[0015] The addition of nano-ZnO further increases the amount of powder filler added. However, through the strong shearing action of the two-roller plastic mixer, the powder can still be added into the NBR compound evenly, and it has a good effect on improving the surface gloss of the compound. The addition of nano-ZnO effectively improves the comprehensive performance of rubber products. The above-mentioned multi-functional nano-reinforced rubber formula is characterized in that its performance is shown in Table 1 through indoor testing.
[0016] The reinforcing effect of table 1 nanometer ZnO to rubber
[0017]
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