Nanotechnology refers to the use of materials at the atomic, molecular, and supramolecular scale in industrial applications. In fact, using raw materials at the nanometric scale (1–100 nanometers) significantly enhances the quantum mechanical effects of materials and improves the quality of manufactured products.

In general, composites are materials made up of two components: a matrix and a reinforcement. The matrix provides mechanical, chemical, and thermal properties, which are then strengthened by the reinforcement phase. Nanocomposites are composites in which the reinforcing phase consists of nanoparticles. In the case of the acrylonitrile butadiene rubber (NBR) nanocomposite developed by Kashe Namad Farvahar Company, Yazd, the matrix is synthetic rubber, while the reinforcement includes fillers, accelerators, vulcanizing agents, and nanoparticles.

The advantage of using nanocomposites in industry is that conventional composites require a large amount of reinforcement material to achieve the desired properties, which makes the product heavier and limits its applications. By contrast, using reinforcements at the nanoscale allows the same properties to be achieved with much smaller amounts, resulting in lighter composites and more economical production. Additionally, the high surface-to-volume ratio of nanoparticles ensures strong interactions with the matrix, significantly enhancing the overall properties of the composite.

The nanomaterials used in the production of acrylonitrile butadiene rubber by the company were developed based on the years of expertise and research by Dr. Manouchehr Mehdazpour, who has extensive experience in the synthesis of nanomaterials, nanosensors, and biosensors, as well as numerous scientific publications. As mentioned earlier, nanoparticles improve the quality of the final product. Nanomaterials have countless applications, and to determine the optimal formulation for the rubber nanocomposite, more than 1,500 laboratory samples were produced. This extensive research led to the development of a highly efficient nanocomposite rubber. After comprehensive laboratory testing and—most importantly—performance testing over an extended period, the company successfully produced rubber with superior quality that can easily compete with foreign alternatives. Today, Kashe Namad Farvahar Yazd is among the few companies worldwide that possess the know-how to manufacture nitrile rubber nanocomposites.

Thanks to the use of nanotechnology and years of optimization, the rubber produced by the company is of exceptionally high quality. Samples were repeatedly sent to laboratories in China, Germany, and Taiwan, where they received official certification. Numerous samples were also distributed free of charge to customers for both device-based and practical testing, all of which confirmed the product’s competitiveness with top global brands.

In addition to rubber nanocomposites, the company’s research center has also developed a variety of adhesives, including rubber-to-metal bonding adhesives and recycled butyl adhesives.

For the production of industrial, agricultural, and automotive oil seals, the metal component must be prepared with a rubber-to-metal adhesive to ensure proper bonding between the rubber and the metal. If this bonding is not done correctly, the final product will not meet the required quality standards. Traditionally, the rubber-to-metal adhesives used in the oil seal industry were imported, which created significant challenges due to high costs and lengthy import processes.

Another challenge in the rubber industry is waste rubber, which often causes environmental pollution when discarded. At Kashe Namad Farvahar Yazd, rubber waste is recycled into butyl adhesive, a highly useful material with wide applications in sealing and waterproofing. Furthermore, the company has developed various types of air-dry adhesives, which currently have no equivalents in the market.

By developing rubber-to-metal bonding adhesives and recycled nitrile adhesives, Kashe Namad Farvahar Yazd has successfully localized this critical technology in Iran, producing adhesives that are not only significantly cheaper but also of higher quality than imported products. The company’s adhesives have demonstrated excellent performance in practical applications.

Additionally, the research center has achieved a breakthrough by producing brown-colored adhesives, unlike imported black ones. This innovation allows the adhesives to be matched to different rubber colors, solving a major problem in oil seal manufacturing. By adjusting the resin structure, the adhesive can even be produced in custom colors, making it possible to manufacture oil seals with superior quality, aesthetics, and durability comparable to leading foreign products.

Since this adhesive is directly produced by the company’s research center, it has completely replaced imported adhesives. Over the course of five years of research and laboratory work, alongside the development of NBR nanocomposites, the company optimized the molecular structure of the adhesive by adding catalysts, curing agents, and suitable fillers. Furthermore, by utilizing discarded rubber, the company has produced a wide range of specialized adhesives, including recycled butyl adhesive and more than ten other unique formulations.