HIGH-STABILITY COMPOSITE PHASE-CHANGE GEL FOR MEDICINE COLD-CHAIN TRANSPORTATION AT 2-8℃

摘要

A high-stability composite phase-change gel for medicine cold-chain transportation at 2-8℃, comprising: a phase-change coolant formed by mixing water, an alcohol phase-change material, first-class particles, a pH regulator and anti-settling particles, wherein the mass percent of the water is 5.2%-24.2%, the mass percent of the alcohol phase-change material is 75.2%-94.2%, the mass percent of the first-class particles is 0.1%-2%, the mass percent of the pH regulator is 0.04%-0.8%, the mass percent of the anti-settling particles is 0.3%-1.4%, the alcohol phase-change material is polyol or a mixture of the polyol, the pH regulator is an alkaline substance, and the anti-settling particles are at least one of polyphosphate and polyacrylate; and a nanogel having a three-dimensional network structure with second-class particles as nodes, and the mass ratio of the phase-change coolant to the nanogel is 20: 1 to 25: 1. The high-stability composite phase-change gel for medicine cold-chain transportation at 2-8℃ is high in phase-change latent heat and good in cycling stability.