PU-integral skin carbon-containing foam for making shoe pads, and preparation method thereof

Abstract

The invention relates to a PU-integral skin carbon-containing foam for making shoe pads. The PU-integral skin carbon-containing foam comprises 65-75 parts of polyether polyol, 25-35 parts of POP grafted polyether, 10-15 parts of nanometer calcium powder, 2-3 parts of bamboo charcoal powder, 25-30 parts of diisocyanate, 2 parts of triethanolamine with the purity of 99%, 1 part of glycol, 1.5 parts of a foaming agent, 0.2 parts of high-resilience silicone oil and 0.1-0.5 parts of an amine catalyst. The foam is prepared through the following steps: stirring and mixing above raw materials, pumping the above obtained mixture solution into a foaming cylinder, injecting the obtained solution into a planar conveyor belt in the discharge process, controlling the foaming thickness by using a scraper pressure roller, slaking the solution on the conveyor belt in an oven, coiling when the integral skin side of the foam is completely slaked and is nonstick, and obliquely peeling the integral skin at the other side to obtain the finished foam. The PU-integral skin carbon-containing foam has the functions of compression deformation resistance, moisture absorption, humidity elimination and long-acting stinking prevention, and can be used to make shoe pads with durability and lasting elasticity and capable of maintaining dryness of foot vola and surfaces and inhibiting the peculiar smell in shoes.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PU self-skinned carbon-containing foam used for making insoles and a preparation method thereof. Background technique [0002] Insoles are necessary accessories for shoes. The importance of insoles has been gradually valued by shoe brands and manufacturing factories in recent years with the improvement of shoe production quality. Excellent insoles need to have the main functions of anti-compression deformation (durable and long-lasting elasticity), moisture absorption and moisture removal (keep the sole and insole surface dry), long-term deodorization (suppresses the odor inside the shoe), and washing resistance (long-term machine washing foam does not tearing, no delamination of the fabric, long-lasting deodorant effect), strong thermoplastic (beautiful, easy to heat press forming), good anti-slip performance (no sliding between the bottom of the insole and the midso...

AI Technical Summary

Problems solved by technology

[0003] The polyurethane system materials currently used to manufacture insoles (bases) are roughly divided into molded PU, dope cut foam and recycled cut foam, etc. - molded PU has good compression deformation resistance and good elasticity, but is limited by the mold Due to the plastic process, the foam body is dense and the mold is die-cast to form a double-sided crust that is almost closed, and its deodorizing, sweat-absorbing and moisture-wicking effects are not good; the raw liquid cutting foam is both raw liquid foaming and cutting materials, and the surface layer after cutting is 360°open state without skinning, to a certain extent, can not achieve the effect of covering a layer of self-skinning on the absorption and discharge of foot sweat; recycled foam is made of recycled foam, open Pores have good air permeability and adsorption, but also limited by the secondary foaming process, the tear strength, compression deformation resistance and elastic properties of the foam are obviously insufficient

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