Granular nano material as rubber stuffing and its prepn

Abstract

The present invention belongs to the field of nano material technology. The granular nano material as rubber additive is prepared with nano material and through adding surface modifier and dispersing adhesive, heating and mixing, and granulating into 1-50 mm grains. The granular nano material has less agglomeration and no flying causing environmental pollution and no harm to worker's health.

Description

1. Technical field [0001] The rubber-filled granular nano-material and its preparation method disclosed by the invention belong to the technical field of nano-materials, and specifically relate to a rubber processing additive—a granular nano-material used for rubber filling, and also relate to The invention relates to a method for preparing granular nanomaterials for rubber filling. 2. Background technology [0002] As we all know, inorganic powders are mainly used as additives in rubber processing formulas, and are indispensable additives. In recent years, due to the rapid development of new technologies and new materials, nanomaterials have unique nanoeffects, such as: ①Small size effect, ②Surface interface effect, ③Quantum size effect, ④Tunnel effect, etc. Therefore, nanomaterials have been favored in recent years and have developed many application fields. One of their uses is to add them to rubber products. It can greatly improve the mechanical properties of rubber pro...

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Problems solved by technology

[0004] In order to solve the above problems, in recent years, domestic and foreign researches have been carried out on the dispersibility of inorganic powders in the rubber processing process, as well as the problems of flying dust, sticking rolls, and environmental protection. agent or surface active agent, manufactured granular high-activity zinc oxide by screw extruder; for example, U.S. Patent No. 6,046,260 provides a zinc oxide dispersion, mainly using petroleum pitch or terpene as binder, fatty acid as surface active Agent, synthetic rubber, natural rubber as the carrier, dispersing zinc oxide in the carrier rubber to obtain a zinc oxide dispersion; another example is the commercially available Bayer-Rheinland company's zinc oxide-80 product, which uses EPDM rubber as the carrier system to obtain a pre-dispersion; although the above examples have solved the problems of traditional inorganic powders in rubber processing, such as sticking rollers, flying dust, environmental protection and endangering human health, there is still no good solution for new-generation nanomaterials. Method

[0005] In addition, there are more particles on the surface of nanomaterials than ordinary materials, the surface energy is large, and the particles are very easy to agglomerate, and they are easy to absorb moisture and carbon dioxide when stored in the air, which will affect the performance and effect of nanomaterials, which makes nanomaterials Packaging, storage and transportation, and shelf life are all affected, and compared with traditional inorganic powders, the dispersion of nanomaterials is more difficult in the process of use. Direct use of nanomaterials is difficult to ensure their dispersion, which will lead to the deterioration of the quality of rubber products. unstable

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