Low-density vacuum compressible memory sponge and preparation method thereof

Abstract

The invention discloses a low-density vacuum compressible memory sponge and a preparation method thereof, and the low-density vacuum compressible memory sponge comprises the following components in parts by weight: 1-80 parts of high EO polyether polyol A, 1-20 parts of polyether polyol B, 1-10 parts of polyether polyol C, 0.1-50 part of polymer polyol D, 0.1-0.7 part of catalyst, 0.5-3 part of special composite silicone oil, 1-8 parts of foaming agent and 40-80 parts of isocyanate. Compared with the prior art, the main raw materials and process for synthesis are improved, the closed-pore shrinkage performance of the sponge is improved, the mechanical property and durability of the sponge are improved, and the problems of odor and VOC in the application process in the field of sponge mattress furniture can be well solved. Meanwhile, in the synthesis process, the density of the slow-rebound sponge is reduced to 25 kg / m<3> to the minimum through control over the formula technology, certain compression strength and supporting performance can be kept, and the severe condition that a sponge finished product can be compressed in vacuum is met.

Description

technical field [0001] The invention relates to a sponge material, in particular to a low-density vacuum compressible memory sponge and a preparation method thereof. Background technique [0002] Polyurethane soft foam sponge has been widely used in the field of furniture, especially pillows, mattresses, sofas and so on. With the intensification of market competition, customers have more and more demands for low-density vacuum-compressible memory foam. But we know that the density design of ordinary memory foam should not be too low, otherwise the bearing capacity will be poor and there will be no support; at the same time, the durability of the sponge is also poor. After a period of use, local collapse will appear, which will seriously affect consumption. The user's use, while producing uncomfortable feeling. [0003] In order to solve the above problems, we have made a series of improvements. Contents of the invention [0004] The object of the present invention is to...

AI Technical Summary

Problems solved by technology

But we know that the density design of ordinary memory foam should not be too low, otherwise the bearing capacity will be poor and there will be no support; at the same time, the durability of the sponge is also poor. After a period of use, local collapse will appear, which will seriously affect consumption. user's use, while producing an uncomfortable feeling