Fire-retardant thermoplastic polyolefin waterproof roll and preparation method thereof

Abstract

The invention discloses a fire-retardant thermoplastic polyolefin waterproof roll, which is of a three-layer composite structure, wherein a middle layer is a fiber fabric layer; an upper surface layer and a lower surface layer are fire-retardant TPO roll layers; a fire-retardant TPO resin layer is prepared from TPO resin as a base material, a composite fire retardant as an assistant and other auxiliary materials; the composite fire retardant is composed of decabrominated dipheny ethane (DBDPE), magnesium hydrate, antimonous oxide and zinc borate; and the auxiliary materials are selected from one or a mixture of more than one of packing, titanium dioxide, a compatilizer, an antioxidant, an ultraviolet absorbent, a light stabilizer and black master batches. According to the waterproof roll disclosed by the invention, through use of the composite fire retardant, the defect that an existing TPO waterproof roll is inflammable is solved; the fire-retardant target is achieved under the premise of ensuring the welding construction and waterproof effect reliability of the product; and through use of the composite fire retardant, the combustion performance of the TPO roll belonging to inflammable materials can be up to A grade maximally, and reaches the non-inflammable grade.

Description

technical field [0001] The invention relates to a polymer waterproof roll material, in particular to a flame-retardant thermoplastic polyolefin waterproof roll material, which belongs to the field of waterproof chemical materials. Background technique [0002] TPO waterproofing membrane is a polymer waterproofing membrane developed in the United States. It has become the main material of single-layer roofing system because of its excellent weather resistance and low temperature performance of EPDM waterproofing membrane and excellent welding construction performance of PVC waterproofing membrane. one. However, olefin-based TPO resin is a flammable material, with an oxygen index of only 18%, which has a serious defect of being easily combustible, while the TPO roofing waterproofing membrane is used for external leakage, potentially causing fire hazards due to the waterproof layer. Therefore, TPO The flame retardant properties of coils are an urgent problem to be solved. [...

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Problems solved by technology

However, the flame retardancy of the coil was not fully considered in the design of this product. It only studied the traditional design, and the flame retardancy level can only reach the B2 level; CN201410173191.1 is a kind of reinforced backing TPO waterproof applied by the applicant this year For the coiled material, a special copolymerized TPO resin is used on the upper and lower surfaces of the intermediate fiber fabric reinforcement layer, and a fiber backing layer is used on the bottom layer to improve the physical strength of the coiled material and the wind-resistant peeling strength of the system, thereby improving its waterproof performance, but this The traditional flame retardant materials are still used in the design of the product, and no attention is paid to improving its flame retardant performance. Even under ideal conditions, the flame retardant performance of the coil can only reach B1 level

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