Polyurethane foam stabilizer with excellent foam performance as well as preparation method and application of polyurethane foam stabilizer

Abstract

The invention relates to the technical field of polyurethane foam, in particular to a polyurethane foam stabilizer with excellent foam performance and a preparation method and application thereof.The polyurethane foam stabilizer is obtained by mixing a component A and a component B. The chemical structure of the component A is as follows: x = 60-100, y = 3-10; the general structural formula of R1 is (CH2) p (OC2H4) g (OC3H6) hOR2, p is equal to 2-4, g is equal to 10-40, and h is equal to 0-40; r2 is H,-CH3 or-C (O) CH3; the chemical structure of the component B is shown in the specification, Ra is an organic silicon chain segment, and Rb is a polyether chain segment.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam, and specifically relates to a polyurethane foam stabilizer based on a silicone foam stabilizer and a preparation method thereof. Background technique [0002] Foam stabilizer is an important component in the polyurethane preparation process, which is related to the open cell ratio, cell size and distribution of polyurethane products. Application indicators such as the feel and air permeability of polyurethane soft foam. [0003] At present, when the existing foam stabilizers are used in the polyurethane foaming system, there are problems such as thick foam cells, low air permeability, and rough foam feel to varying degrees. [0004] Patent CN201510679357.1 describes a polyurethane soft foam with fine cells. The performance active agent used has a special structure. Effectively improve the polyurethane foam structure, making the cell structure of the foam more uniform and dense, and th...

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Problems solved by technology

However, the polyether used is special and needs to be capped with an allyl group, and the reaction is complicated

[0005] Patent CN201810893336.3 describes a silicone foam stabilizer, using allyl-terminated polyether and silicon-hydrogen-terminated low-hydrogen silicone oil for grafting reaction , the obtained foam stabilizer has good emulsification, this invention is to improve the gas permeability of the product by increasing the molecular weight of polyether, but too high molecular weight of polyether will make the grafting reaction difficult

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