Inorganic flame-retardant intelligent temperature regulation cellulose fiber and preparation method thereof

Abstract

The invention provides an inorganic flame-retardant intelligent temperature regulation cellulose fiber. For the fiber, the melting enthalpy value is 24-25 J / g, the melting temperature is 29-33 DEG C,the crystallization enthalpy value is 22.5-23.0 J / g, and the crystallization temperature is 18-21 DEG C. The invention also provides a preparation method of the fiber. In the phase-change temperatureregulation cellulose fiber prepared by the method, the content of phase-change material microcapsules is 10.4-10.6%; the limiting oxygen index of the inorganic flame-retardant temperature regulation fiber prepared by the method reaches 35% or above, and the flame retardancy is excellent.

Description

technical field [0001] The invention relates to an inorganic flame-retardant intelligent temperature-regulating cellulose fiber and a preparation method thereof, belonging to the technical field of temperature-regulating fibers. Background technique [0002] The thermal insulation mechanism of the heat storage and temperature regulating fiber is derived from the phase change process of the phase change energy storage material through the induction of the external temperature, resulting in heat absorption and heat release. According to the change of the external environment temperature, it can absorb heat from the environment and store it inside the fiber, or release the heat stored in the fiber, and form a microclimate with a basically constant temperature around the fiber, so as to realize the function of temperature regulation, heat storage and temperature regulation of the fiber. This endothermic and exothermic process is automatic, reversible, and multiple times. [000...

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Problems solved by technology

[0006] (2) After the phase change material microcapsules are blended with the spinning stock solution, they are sprayed into the coagulation bath for spinning, because the distribution of phase change material microcapsules in the fiber is random, that is to say, a large number of phase change material microcapsules will be distributed In the core layer of the fiber, the forming process of wet spinning leads to less skin or skin layer distributed on the surface of the fiber; while the microcapsule of phase change material absorbs or releases heat by sensing the temperature change of the external environment. The microcapsules on the fiber skin or surface can quickly adjust the temperature, while a large number of phase change material microcapsules are distributed inside the fiber core, causing a lot of waste and increasing production costs