Rubber granulator | EPDM track pellet extruder

橡胶片材挤出机：

橡胶片材挤出机

橡胶片材挤出机：

橡胶片材挤出机

橡胶片材挤出机：

橡胶片材挤出机

&Radar uses the reflection of radio waves by the target to detect the direction and distance of the target. According to the difference in the direction of the electromagnetic wave emitted by the radar antenna, the beam is divided into main lobe, side lobe and tail lobe. Radar uses the main lobe to locate targets, while the side lobes and tail lobes are harmful rather than helpful. Therefore, it is necessary to filter out the side lobes and tail lobes in the radar beam and retain the main lobe in the beam, so that the radar can accurately determine the direction and distance of the target. Damping rubber material can better eliminate its parasitic signals and is an ideal sound-absorbing material. However, due to the structure of the rubber itself and the compounding agents, the damping rubber material has the problem of being easily scorched. Therefore, if the material is left for a period of time, its solubility performance will be greatly reduced, and it may even become insoluble, making it unusable. This requires modification of its materials. This article focuses on prolonging the scorch time of damping rubber and improving its storage safety. At the same time, taking into account the sound absorption effect and adhesive properties of the material, there have been no literature reports on the modification of this material. The research in this article has good theoretical guidance and application value for the modification of this type of material. &Experimental part.&Preparation of raw materials, rubber and slurry
Damping rubber: Compound additives provided by the 14th Research Institute of the Ministry of Electronics Industry: developed by the research team, dichloroethane:... grade, Yixing City No. Second chemical reagent factory product stearic acid: .. grade, Nanjing Hailing Fine Chemical Factory product anti-scorch agent: R,
Zhejiang Huangyan Donghai Chemical Factory product tetramethylthiuram disulfide
Mu, Gu Malone resin: commercially available industrial grade.
Weigh the raw materials according to a certain proportion, mix them on the open mill and cut them into pieces for later use. Dissolve the rubber material in dichloroethane according to a certain proportion to make a glue slurry for later use. .&Testing
Use H-type vulcanization instrument to measure the vulcanization curve of the mixed rubber. Use Q standard signal generator, pulse signal generator, and oscilloscope to measure surface waves and body waves. Use Q rubber strength testing machine to measure tensile properties. Calculate the adhesive strength of the rubber material. Put the rubber material into a D electric blast drying oven at ℃. Take samples at certain intervals and dissolve them in dichloroethane. Observe the dissolution of the rubber sample and record the time it takes to dissolve during vibration. Conduct a simulated vibration experiment on the table to observe the adhesion of the glue sample. &Results and Discussion
.&The influence of different compounding agents on the scorch properties of the rubber
From. It can be seen that the additives and stearic acid have
better anti-scorch effect[, ].
.&The influence of different compounding agents on the sound absorption effect of the rubber material
It can be seen from b. that when the additive dosage is .% (mass), the rubber material shows better sound absorption effect , exceeding the % before modification. The addition of stearic acid greatly reduces the sound absorption effect of the rubber, so it should not be used.
.&The online use effect of modified damping rubber
It can be seen from .~. that the modified damping rubber can well filter out the side lobes and tail lobes in the beam,< br/> Meet the usage requirements.
To sum up, the damping rubber modified by using compound additives at a dosage of .% has better scorch performance and can be dissolved for 3 times as long as before modification. At the same time, the sound absorption effect of its modified damping rubber has been improved by 10%, which can effectively filter out its parasitic signals. The adhesive performance of the modified damping rubber has declined, but it can meet the requirements of radar use.
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