Weather-proof anti-aging high-thermal-stability insoluble sulfur and production method thereof

Abstract

The invention discloses weather-proof anti-aging high-thermal-stability insoluble sulfur, which is characterized by being prepared from the following raw materials in parts by weight: 100 parts of sulfur powder, 0.5-1.2 parts of white carbon black, 0.2-0.4 part of urea, 0.1-0.3 part of magnesium carbonate, 4-7 parts of attapulgite, 1-2 parts of nanotitanium dioxide, 0.03-0.07 part of accelerant CZ, 2-3 parts of dioctyl phthalate, 6-9 parts of hexachlorocyclopentadiene, 2-4 parts of p-tolyl isocyanate, 0.3-0.5 part of anti-aging agent 2246, and a proper amount of water. According to the method, the energy consumption is low, and static electricity of the product can be eliminated and the content of insoluble sulfur can be increased by adding modified white carbon black serving as an antistatic agent during preparation through a low-temperature liquid method; by taking 0.1% of pentaerythritol water solution as a cold quenching liquid, the cost is low, and the effect is obvious; and by adding nanotitanium dioxide, the weather-proof property of rubber finished products can be enhanced and the dispersity of insoluble sulfur can be improved; and according to the prepared insoluble sulfur, the conversion rate is high, the heat resistance and natural degradation capabilities are also good.

Description

technical field [0001] The invention relates to the technical field of insoluble sulfur preparation, in particular to a weather-resistant, anti-aging, high thermal stability insoluble sulfur and a preparation method thereof. Background technique [0002] Insoluble sulfur, also known as elastic sulfur or polymeric sulfur, is a linear polymer formed by the polymerization of a large number of sulfur atoms. The relative molecular weight can reach tens of thousands. It is a non-toxic, flammable yellow powder obtained because it is insoluble in carbon disulfide. It is an allotrope and a polymer modified variety of high-polymerization form of ordinary sulfur. Insoluble sulfur is a high-efficiency rubber vulcanizing agent, which has the advantages of good distribution stability in the rubber compound, uniform vulcanization and cross-linking points of the product, can overcome the "blooming" on the surface of the rubber compound, and improve the bonding of rubber and steel wire or ch...

AI Technical Summary

Problems solved by technology

[0003] The preparation of insoluble sulfur by the low-temperature liquid phase method only requires superheating the sulfur melt and does not need to gasify the sulfur. The temperature is relatively low, and it has the advantages of low energy consumption and relatively mild production conditions. The most critical process links are rapid cooling and solidification. Those who affect the performance of the final product to a great extent, the insoluble sulfur produced in the prior art has defects such as poor dispersibility, low thermal stability, low taste, complex process, etc.