Dark-colored and infrared-reflective fiber without metal composition, manufacturing method thereof, and textile

A manufacturing method of a dark-colored and infrared-reflective fiber, comprising:

• implementing a masterbatch forming step which includes:
• mixing a polymer resin material from 50 to 99.5 weight percent with an organic azo pigment from 0.5 to 50 weight percent under a temperature between 150° C. and 300° C. to form a plurality of thermal-insulation masterbatches;
• and
• implementing a fiber forming step which includes:
• melt-spinning the plurality of thermal-insulation masterbatches under a temperature between 150° C. and 300° C. to form a plurality of dark-colored and infrared-reflective fibers;
• wherein the organic azo pigment is formed by a diazo coupling reaction between a diazo component and a coupling component, and the organic azo pigment is dispersed in the polymer resin material in the form of a plurality of micro particles;
• wherein the organic azo pigment has an average particle size between 0.2 micrometers and 4 micrometers and a heat-resistant temperature of not less than 300° C., and the organic azo pigment has an infrared reflectance of not less than 50% in an infrared wavelength range between 780 nm and 2,500 nm;
• wherein an L value of each of the fibers in a CIELAB color space is not greater than 15.

A textile characterized in that the textile is formed by interlacing a plurality of dark-colored and infrared-reflective fibers, the textile has a thickness between 500 micrometers and 1,500 micrometers, and each of the dark-colored and infrared-reflective fibers comprises:

• a polymer resin material;
• and
• an organic azo pigment formed by a diazo coupling reaction between a diazo component and a coupling component, the organic azo pigment being dispersed in the polymer resin material in the form of a plurality of micro particles;
• wherein the organic azo pigment has an average particle size between 0.2 micrometers and 4 micrometers and a heat-resistant temperature of not less than 300° C.;
• wherein the organic azo pigment has an infrared reflectance of not less than 50% in an infrared wavelength range between 780 nm and 2,500 nm.