Preparation technology of high-efficiency, no-molten droplet and flame-resistant reticulated polyurethane foam plastic

Abstract

The invention relates to the field of chemical engineering and especially relates to high-efficiency, no-molten droplet and flame-resistant reticulated polyurethane foam plastic and a preparation technology thereof. The high-efficiency, no-molten droplet and flame-resistant reticulated polyurethane foam plastic comprises: by weight, 38 to 42 parts of a polymer polyol compound having molecular weight of 3000, 28 to 33 parts of a polymer polyol compound having molecular weight of 8000, 28 to 33 parts of a polymer polyol compound having molecular weight of 1000, 42 to 48 parts of toluene diisocyanate, 5 to 10 parts of diphenylmethane-4,4'-diisocyanate, 0.6 to 0.7 parts of a foam stabilizer, 4 to 4.3 parts of water, 3.2 to 3.8 parts of an auxiliary foaming agent, 18.5 to 22.5 parts of an environmentally-friendly flame-retardant additive, 3.2 to 3.8 parts of a cross-linking agent, 1.5 to 2.0 parts of a balanced-mixing catalyst and 1 to 5 parts of a colorant. The preparation technology adopts a continuous horizontal synthesis process. The high-efficiency, no-molten droplet and flame-resistant reticulated polyurethane foam plastic obtained by the preparation technology satisfies environmental protection requirements, has good flame retardation, produces a small amount of smoke in burning, and does not produce molten droplets.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation process of high-efficiency droplet-free flame-retardant polyurethane reticulated foam. Background technique [0002] Ordinary polyurethane reticulated foam plastics have no flame retardancy, and there may be a fire hazard in case of an open flame. In order to ensure the safety of the material, it is necessary to make the material flame retardant through technical research, and the vast customer base generally requires it according to a certain industry or an international flame retardant standard. Various polyurethane reticulated foam manufacturers are competing to achieve flame retardancy by introducing flame retardant additives into the formula or soaking ordinary polyurethane reticulated foam with flame retardants. Therefore, various flame retardant polyurethane reticulated foam products have come out one after another. However, many new problems have emerged in...

AI Technical Summary

Problems solved by technology

However, many new problems have emerged in this way: ①The level of flame retardant is uneven; ②Because most of the flame retardants are harmful substances, the addition of flame retardants poses a risk to the environmental protection of the material itself. On the one hand, the material burns Thick toxic black smoke will be produced sometimes, and on the other hand, high-temperature liquid droplets will be produced, which not only seriously pollutes the environment, but also brings great harm to the society; ③With the EU ROHS and REACH regulations and environmental protection With sound laws and regulations, many flame retardant additives with low cost and excellent effect cannot continue to be used, which greatly increases the cost and difficulty of flame retardant technology

However, because environmental protection and flame retardancy are invisible to the naked eye, professional testing is required to achieve it, so there are a lot of shoddy traps in the market