A study on the application of paraffin@calcium carbonate phase change microcapsules in seaweed fibers
The textile industry plays a crucial role in economic development and enhancing the quality of life for people.With increasing environmental awareness and rising living standards,the development of eco-friendly fibers and functional textiles has become a hot topic in academia.The seaweed fiber,as a biodegradable and renewable fiber,has been widely applied in textiles and medicine due to its natural flame resistance,biodegradability,simple production,and low cost.It has gradually expanded into fields such as flame-retardant protection and healthcare.Simultaneously,temperature-controlling textiles,as a new type of functional textile,can regulate temperature by combining phase change materials with fibers,thereby enhancing comfort for the human body.However,phase change fiber products still face challenges in practical applications,such as the choice of wall materials and the lifespan of phase change materials.Both inorganic and organic materials can be used as wall materials for microcapsules.Organic wall materials have been widely used as coating materials but face challenges such as low thermal conductivity,poor mechanical properties,and short lifespan.Inorganic wall materials possess good mechanical strength and thermal conductivity but are still in the development stage.Therefore,this study aims to explore the feasibility of combining seaweed fibers with phase change materials to prepare temperature-regulating fibers,with a focus on optimizing the selection of wall materials and improving the thermal performance of microcapsules through process parameter optimization.To address the issues of poor thermal conductivity of phase change materials and the single functionality of fiber products,organic wax was used as the phase change material,and CaCO3 with high thermal conductivity and low cost was used as the coating material to prepare phase change microcapsules via self-assembly.Then,wet spinning technology was employed to combine phase change microcapsules with seaweed fibers,resulting in temperature-regulating seaweed fibers with environmental and heat storage properties.In the preparation process,process parameters such as the core-to-wall mass ratio,reaction temperature,and rotation speed were optimized to obtain microcapsules with moderate particle size,good appearance,and excellent thermal performance.The obtained seaweed fibers'temperature-regulating performance was tested.This study selected inorganic materials with good thermal conductivity as coating materials and used biodegradable sodium alginate as the fiber forming material,together with wet spinning technology,providing new ideas for the functional development of textiles.The results show that by using organic wax as the phase change material and CaCO3 as the coating material,phase change microcapsules could be successfully prepared through self-assembly.After optimizing process parameters such as core-to-wall mass ratio,reaction speed,and emulsifier type,microcapsules with regular spherical particles,good thermal performance,and excellent thermal stability were obtained,with a phase change enthalpy of 95.2 J/g.By blending the optimized phase change microcapsules with sodium alginate,temperature-regulating seaweed fibers were prepared via wet spinning technology.The temperature-regulating fibers were evenly distributed in the seaweed fiber,exhibiting good phase change characteristics,with a phase change enthalpy of 38.6 J/g.This study successfully combines phase change microcapsule technology with seaweed fibers,achieving the preparation of environmentally friendly temperature-regulating fibers,and providing new ideas and technical support for enhancing the functionality and environmental performance of textiles.In the future,further optimization of process parameters to improve the preparation efficiency of phase change microcapsules and the stability of fibers'performance should be explored,along with tapping into the development potential of more functional fibers to meet the market demand for eco-friendly and functional textiles.
phase change microcapsulescalcium carbonatecore-wall mass ratioseaweed fibreswet spinningenthalpy
万方数据
维普
