All-water environment-friendly and flame-retardant inflation memory polyurethane foam for automobile seat and preparation method of all-water environment-friendly and flame-retardant inflation memory polyurethane foam

Abstract

The invention provides all-water environment-friendly and flame-retardant inflation memory polyurethane foam for an automobile seat and a preparation method of the all-water environment-friendly and flame-retardant inflation memory polyurethane foam. The all-water environment-friendly and flame-retardant inflation memory polyurethane foam is prepared from polyether polyol A, polyether polyol B, polyether polyol C, polyether polyol D, a chemical foaming agent, a composite catalyst, a foam stabilizer, a crosslinking/chain extender and full MDI (Methylene Diphenyl Diisocyanate) system isocyanate.According to the preparation method of the all-water environment-friendly and flame-retardant inflation memory polyurethane foam, disclosed by the invention, by scientifically matching the use amounts of all reactive components, adopting an all-water foaming and low-odor reactive environmental-friendly aid and selecting proper isocyanate formed by compounding, the obtained foam is flame-retardant, no flame retardant is added, and the odor of the foam is relatively-low; the foam is applied to the automobile seat, so that environmental protection can be improved.

Description

technical field [0001] The invention belongs to the field of flexible polyurethane foam, and relates to a shape-memory polyurethane foam for automobile seats and a preparation method thereof. Specifically, the flexible foam has a shape memory function, and the foam itself is environmentally friendly and flame-retardant, and is formed from a composition without any flame retardant. Background technique [0002] At present, the automobile industry is developing rapidly, and people's requirements for ride comfort are getting higher and higher. Slow rebound foam is also called memory foam. Because of its shape memory function, good damping performance, good sound absorption and shock absorption function, when it is used as a seat cushion material, it can conform to the shape of different parts of the human body and contact with the human body. , the body pressure is evenly distributed, and the stress is dispersed, which is beneficial to the blood circulation of the human body, ...

AI Technical Summary

Problems solved by technology

[0003] Conventional slow rebound molding foam is mainly prepared by blending low molecular weight and low activity polyether (called slow rebound polyether in the market) in a certain proportion with high activity polyether, and the prepared slow rebound foam is easier to close cells , resulting in shrinkage and deformation of the foam. Therefore, when preparing foam, it is often necessary to add a certain proportion of cell-opening agent to open the cells. The foam cell structure prepared by this method is different in size, low in strength, and poor in hand feeling.

In order to improve the flame retardancy of the foam, it is necessary to add a flame retardant to the raw material, resulting in a strong smell of the foam, a large amount of smoke when burning, and strong toxicity

At the same time, it is often necessary to use a relatively low isocyanate index when preparing foam, and the reaction between the combined polyol component and the isocyanate component is not sufficient, especially some low molecular weight, low-functionality small molecule substances cannot effectively participate in the reaction, resulting in foam pressure change The performance is poor, the mechanical properties are reduced, the support is poor, and the foam smell is large, which is not conducive to the promotion and application of car seats

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