Sponge and preparation method thereof

Abstract

The invention provides a sponge and a preparation method thereof. The sponge is prepared from the following raw materials in parts by mass: 45-60 parts of toluene diisocyanate, 25-35 parts of diisocyanate, 4-6 parts of water, 1-2 parts of a polymerization catalyst, 45-60 parts of polyether glycol, 3-4 parts of a flame retardant and 3-4 parts of a foaming agent. The preparation method comprises the following steps: (A) mixing and foaming toluene diisocyanate, 2.5-3 parts of water and 1-2 parts of the foaming agent, thereby obtaining polymeric sponge; (B) uniformly stirring diisocyanate, the rest water, stannous octoate, polyether glycol and the flame retardant, thereby obtaining a first mixture; and (C) fixing the polymeric sponge on the top of a mold, putting the first mixture into the mold, mixing and foaming the first mixture with the residual foaming agent to form an emulsion sponge, performing polymerization reaction on the emulsion sponge with the polymeric sponge, and forming, cooling and cutting, thereby obtaining a product. The preparation method has the advantages that the operation is simple, no adhesive is adopted for adhesion, and the like.

Description

technical field [0001] The invention relates to the field of sponge production, in particular to a sponge and a preparation method thereof. Background technique [0002] Sleep is the foundation of health, how can we have a healthy sleep? In addition to work, life, physical, psychological and other reasons, having healthy bedding that is "hygienic, comfortable, beautiful, and durable" is the key to obtaining high-quality sleep. With the continuous progress of material civilization and technology, the types of mattresses used by modern people are gradually becoming diversified, mainly including: spring mattresses, palm mattresses, latex mattresses, water mattresses, air mattresses, magnetic mattresses, etc. . [0003] The material of these inner cushion layers of these mattresses has certain air permeability, but because the mattress cushion layers are often stacked together by multi-layer materials, such as surface cloth, sponge, latex, cotton, spray-bonded cotton, non-wove...

AI Technical Summary

Problems solved by technology

[0003] The material of these inner cushion layers of these mattresses has certain air permeability, but because the mattress cushion layers are often stacked together by multi-layer materials, such as surface cloth, sponge, latex, cotton, spray-bonded cotton, non-woven fabric, Cotton felts and springs slowly infiltrate the limit of air circulation inside the mattress in a limited space, resulting in premature mold and deformation of the inner materials of the mattress, rusting of the springs, a decrease in consumer comfort, and easy to feel hot when using. Moreover, there will be disadvantages such as poor air permeability and water permeability, easy deformation and high cost.

At the same time, in order to strengthen the stability of the cushion or between the cushions or between the cushion and the spring, people will use various standard glues in the mattress production process, thereby producing different degrees of formaldehyde substances that are harmful to consumers, causing Chronic respiratory diseases, causing newborns to reduce their physical fitness, long-term exposure, and may also cause cancer in the nasal cavity, oral cavity, nasopharynx, throat, skin and digestive tract. This glue is not environmentally friendly and will also damage human health.

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