▎ 摘　　要

NOVELTY - Rare earth-based infrared reflecting warm-keeping fabric comprises a reflecting layer and a heat insulating structure layer. The reflecting layer is formed by rare earth-based infrared reflecting and weaving yarn. The rare earth-based infrared reflecting yarn is prepared by dipping yarn with rare earth-based infrared reflecting dipping liquid. The rare earth-based infrared reflecting dipping liquid comprises 0.1-70 wt.% rare earth-based infrared reflecting slurry comprising 4.2-123 pts. wt. reflecting powder, 0.4-65 pts. wt. near infrared absorbing powder, 25-99 pts. wt. dispersing medium and 0.1-30 pts. wt. dispersing agent. The reflective powder comprises 1-60 pts. wt. lanthanum cerium oxide, 5 pts. wt. lanthanum oxide, 5 pts. wt. cerium oxide, 1-5 pts. wt. lanthanum cerium phosphate, 0.1-8 pts. wt. yttrium oxide zirconium, 1-15 pts. wt. titanium oxide, 1-15 pts. wt. calcium carbonate and 0.1-10 pts. wt. ferric oxide. USE - The rare earth-based infrared reflecting warm-keeping fabric is used in fields of clothing and home textiles (claimed). ADVANTAGE - The fabric has the synergistic enhancement effect of infrared utilization, under far-infrared irradiation, the rare earth-based infrared reflective thermal insulation fabric was effectively increased by 26℃ compared with the fabric without the rare earth-based infrared reflective material. DETAILED DESCRIPTION - Rare earth-based infrared reflecting warm-keeping fabric comprises a reflecting layer and a heat insulating structure layer. The reflecting layer is formed by rare earth-based infrared reflecting and weaving yarn. The rare earth-based infrared reflecting yarn is prepared dipping yarn with rare earth-based infrared reflecting dipping liquid. The rare earth-based infrared reflecting dipping liquid comprises 0.1-70 wt.% rare earth-based infrared reflecting slurry. The rare earth based infrared reflecting slurry comprises 4.2-123 pts. wt. reflecting powder, 0.4-65 pts. wt. near infrared absorbing powder, 25-99 pts. wt. dispersing medium and 0.1-30 pts. wt. dispersing agent. The reflective powder comprises 1-60 pts. wt. lanthanum cerium oxide, 5 pts. wt. lanthanum oxide, 5 pts. wt. cerium oxide, 1-5 pts. wt. lanthanum cerium phosphate, 0.1-8 pts. wt. yttrium oxide zirconium, 1-15 pts. wt. titanium oxide, 1-15 pts. wt. calcium carbonate and 0.1-10 pts. wt. ferric oxide. The near infrared absorbing powder comprises 0.2-55 pts. wt. rare earth hexaboride, 0.1-5 pts. wt. caesium tungsten bronze and 0.1-5 pts. wt. graphene. The rare earth hexaboride comprises 0.1-5 pts. wt. lanthanum hexaboride, 5 pts. wt. cerium hexaboride, 5 pts. wt. yttrium hexaboride, 5 pts. wt. europium hexaboride, 10 pts. wt. CexLa1-xB6, 0.1-5 pts. wt. EuxLa1-xB6, 10 pts. wt. SmxLa1-xB6, 5 pts. wt. GdxLa1-xB6, and 5 pts. wt. YxLa1- xB6, where X value is 0.1-0.9. An INDEPENDENT CLAIM is included for preparing the fabric, comprising (i) adding the 0.1-70 wt.% rare earth-based infrared reflecting slurry, 1-10 wt.% adhesive, 1-5 wt.% leveling agent into the high speed dispersion machine to mix uniformly; (ii) soaping the yarn at 35-45℃ for 5-12 minutes, dehydrating and drying at 80-85℃ for 3-7 minutes; (iii) after cleaning, introducing into the dipping tank for dipping, pH 7.5-8.5, and dipping at 65-75℃ for 5-7 minutes, where the rolling residue rate is 75-85%; (iv) secondary dipping at 95-99℃ for 1-3 minutes, where the rolling residue rate is 65-75% and drying at 90-120℃ for 55-75 seconds; and (v) introducing 3-7% polyester into solution tank, the water tank temperature is 35-55℃, soaking for 45-65 seconds, and drying at 80-85℃ for 3-7 minutes to obtain rare earth-based infrared reflecting yarn.