High-flame-retardance composite polyether used in fishing vessels

Abstract

The invention discloses a high-flame-retardance composite polyether used in fishing vessels. The invention belongs to the technical field of polyurethane foam plastics. The composite polyether comprises the components of: 25-80 parts of halogen-free flame-retardant polyether, 0-50 parts of halogen-free flame-retardant polyester, 15-20 parts of structural polyether, 5-10 parts of cross-linked polyether, 1-2 parts of a foam stabilizer, 12 -18 parts of a catalyst, 0.4-1.8 parts of deionized water, 28-40 parts of chlorodifluoroethane, 22-52 parts of a halogen-free flame retardant, and 200-280 parts of diphenylmethane diisocyanate. A total amount of the halogen-free flame-retardant polyether, the halogen-free flame-retardant polyester, the structural polyether, and the cross-linked polyether accounts for 100 parts. The fishing vessel high-flame-retardance composite polyether has the advantages of high flame-retardance coefficient, good insulation effect, high dimensional stability, no toxic effect, and the like. The high-flame-retardance composite polyether can be applied in industries such as vessels and construction.

Description

technical field [0001] The invention relates to a high flame-retardant combined polyether for fishing boats, which belongs to the technical field of polyurethane foam plastics. Background technique [0002] Polyurethane rigid foam is a polymer composite material with superior performance. It has the advantages of low density, high strength, good thermal insulation effect, and high bonding strength. It is recognized as the best thermal insulation material, so it is mostly used in home appliances and panels. , pipelines, containers, construction materials, and ship supplies, etc. With the development of marine technology in recent years, the requirements for the materials of marine supplies are getting higher and higher, especially the flame retardant properties. In marine operations, especially in offshore operations, once a fire occurs, it is easier to cast due to the influence of sea breeze and other factors. This will not only cause huge economic losses, but also pose a t...

AI Technical Summary

Problems solved by technology

The additive flame retardant method is to add a non-reactive but flame retardant substance to the foamed polyurethane to prevent the foam from burning, but the added flame retardant is not compatible with the polyurethane, which can easily cause foam Foam collapse and cracking lead to a substantial decline in the physical and mechanical properties of the material; the reactive flame retardant method is to add reactive flame retardants such as polyols containing phosphorus, chlorine, and bromine flame retardant elements to the polyurethane foam formulation or Introducing flame retardant units into the structure of ether polyols, this method has long-lasting flame retardant properties and has little impact on physical and chemical properties, especially the method of introducing flame retardant elements into polyether polyols can make polyurethane products have higher heat resistance , dimensional stability and strength, but the production process is difficult to control, and the quality of the product is unstable, especially its accompanying flame retardant elements such as halogens will cause harm to the human body

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