Method for rubber sheet surface layer radiation vulcanization

Abstract

The invention discloses a method used for rubber sheet surface or uneven radiation curing, an electronic beam generated by an electronic accelerator is utilized to irradiate a rubber sheet, the incident beam energy is reasonably adjusted to realize the rubber sheet surface or uneven radiation curing; a device provided by the invention comprises the electronic accelerator and a beam downside device thereof, the beam downside device consists of an irradiation box protected by limited oxygen, and a transmission device, the irradiation box is arranged directly under the radiation window of the electronic accelerator, the titanium window arranged at the top part of the irradiation box corresponds to the titanium window of the irradiation box, the transmission device causes the rubber sheet to pass through the irradiation box at uniform speed, the electronic beam generated by the electronic accelerator irradiates the rubber sheet through the titanium window of the irradiation box, thereby fulfilling the surface curing of the rubber sheet. The surface radiation curing of the rubber sheet is performed under the normal temperature and the normal pressure, and the process is simple, the productivity effect is high, the degree of curing is easy to be adjusted, the environmental pollution is less, the green strength of the rubber material processed by the radiation is high, the structure and the performance are stable, the thermal stability of the product is good, the ozone resistance property is strong and the anti-aging property is provided, and the service life of the product is prolonged.

Description

Technical field [0001] The invention relates to the technical field of radiation vulcanization processing of rubber materials, in particular to a method for radiation vulcanization of the surface layer of a rubber sheet. technical background [0002] Rubber materials are widely used in various fields of industry and life, but before they can be applied, rubber materials must go through the important process of vulcanization in order to complete product shaping and stabilize and improve material performance. At present, most of the domestic rubber sheets are made by traditional vulcanization process during molding, that is, under certain heat conditions, the vulcanization agent, vulcanization accelerator and vulcanization activator are used to pressurize and shape, so that the rubber molecules are cross-linked. For the rubber sheet using the traditional vulcanization process, the vulcanization system is firstly added to the composition and then uniformly distributed in the su...

AI Technical Summary

Problems solved by technology

Now commonly used radiation sources mostly use 60-Coγ-ray sources. The radiation dose rate of 60-Coγ-rays is low, and the radiation penetration energy is large. It is generally limited to the vulcanization and production of special-shaped rubber products with low vulcanization dose or large thickness. The efficiency is low, and for the vulcanization of rubber sheet materials, since rubber sheets have different thicknesses and densities, especially most rubber material sheets also contain skeleton materials, such as using 60-Coγ-ray method to irradiate rubber sheets Vulcanization, the absorbed dose in the depth direction of the material is not easy to control, it is not easy to carry out local crosslinking, and it is difficult to realize the vulcanization of its surface layer. For rubber sheets containing skeleton materials, high-energy ray radiation will cause degradation of some skeleton materials, thus affecting Properties of framework materials

According to reports, in the rubber vulcanization process in foreign countries, radiation processing technology is also applied at present, but there is no technical data for reference on the surface radiation vulcanization method, process and process parameters of rubber sheets.