Flame-retarding type nano composite rubber material and preparation method thereof

Abstract

The invention discloses a flame-retarding type nano composite rubber material and a preparation method thereof. The flame-retarding type nano composite rubber material is prepared from the following raw materials in percentage by weight: 60 percent of a modified rubber matrix, 25 percent of nano powder, 10 percent of a surfactant and 5 percent of a dispersant. The preparation method comprises thefollowing steps that: firstly, the nano powder and one part of the surfactant are mutually sprayed under the auxiliary effect of pure air, and one layer of covering film is formed through drying operation to cover the nano powder; then the covered nano powder and the other part of the surfactant are uniformly blended, so that the affinity ability of the nano powder is improved, and effects of allthe raw materials for forming the nano powder can be more obviously expressed; then the nano powder is blended with the dispersant and the modified rubber matrix subjected to rubber pressing and rubber cutting; then a mixture is dried and rubbed, so that the mixture has proper flowability and machinability; the flame-retarding effect of a product is remarkably improved and is the permanent flame-retarding effect according to the synergistic flame-retarding effect, and excellent dispersion and combination capabilities of the nano powder and the mixture.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a flame-retardant nano-composite rubber material and a preparation method thereof. Background technique [0002] Nano-composite rubber materials use rubber as the continuous phase, nano-sized metals, semiconductors, rigid particles, inorganic particles, fibers or carbon nanotubes as the dispersed phase, and mix the two evenly in an appropriate way to form a composite material. The phase contains a nano-sized composite system, that is, the system material is often called a nanocomposite rubber material. [0003] However, in the existing nanocomposite rubber materials, there are problems of weak flame retardant ability and single flame retardant effect, and the flame retardant effect will gradually decline with the passage of time, and it is difficult to achieve permanent flame retardant effect; and in the present In the preparation process of some nano-composite rubber m...

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Problems solved by technology

[0007] In the present invention, nanopowder and a portion of surfactant are sprayed opposite to each other with the aid of circulating pure air, so that the object-like mist curtain of the two is fully contacted, and then dried to form a layer of coating. The film wraps the nano-powder, and after one part of the surfactant is sprayed, the other part of the surfactant is introduced and stirred together, so that the nano-powder formed on the outside is evenly dispersed in the surfactant, which is helpful for the subsequent The homogeneous mixing and fusion between the nano powder and the modified rubber matrix greatly reduces the energy consumption and time during blending, and effectively solves the problem that the combination of rubber and nano raw materials is poor and it is difficult to achieve uniform dispersion. To a certain extent, the problem of not being able to exert one's own ability ideally;

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