41results about How to "Large degree of curl" patented technology

The invention relates to a polyester paralleling composite yarn. The polyester paralleling composite yarn is prepared from PBT (polybutylece terephthalate) and modified polyester PET (polyethylene terephthalate) chips through parallel composite spinning, wherein the modified polyester is composed of polyester and aminoadipic acid gylcol ester, the aminoadipic acid gylcol ester is dispersed among molecular chains of the polyester, hydrogen-bond interaction exists between the aminoadipic acid gylcol ester and the molecular chains of the polyester, and the relative position of the aminoadipic acid gylcol ester and the molecular chains of the polyester is fixed; the free volume space among the molecular chains inside the fibers is increased by 20-30v / v% when the polyester of the polyester paralleling composite yarn is at 90-130 DEG C, the dying rate of the polyester paralleling composite yarn is higher than that of the common fiber when the polyester paralleling composite yarn adopts disperse red 3B and the like, less surface dyeing is formed after dyeing, and the polyester paralleling composite yarn has wide application prospect in the field of garment materials.

The invention relates to a polyester fiber FDY (Fully Drawn Yarn) with high dyeing rate and a preparation method thereof. The polyester fiber FDY with high dyeing rate is prepared from modified polyester, the modified polyester is composed of polyester and aminoadipic acid gylcol ester, the aminoadipic acid gylcol ester is dispersed among molecular chains of the polyester, hydrogen-bond interaction exists between the aminoadipic acid gylcol ester and the molecular chains of the polyester, and the relative position of the aminoadipic acid gylcol ester and the molecular chains of the polyester is fixed; the free volume space among the molecular chains inside the fiber is increased by 20-30v / v% when the polyester fiber FDY with high dyeing rate is at 90-130 DEG C, the dying rate of the polyester fiber FDY with high dyeing rate is higher than that of the common fiber when the polyester fiber FDY with high dyeing rate adopts the same dyes such as disperse red 3B, disperse blue SE-2R, disperse bright blue S-GL and the like, less surface dyeing is formed after dyeing, and the polyester fiber FDY with high dyeing rate can be used for garment materials, bedding article decoration and the like.

The invention relates to a wool-like differential shrinkage composite filament and a preparation method thereof. The wool-like differential shrinkage composite filament is a composite filament prepared from modified polyester POY filaments and modified polyester FDY filaments which are subjected to fiber mixing processing; the amino fatty acid gylcol ester is dispersed among the molecular chains of the polyester and has a hydrogen bonding function with the molecular chains of the polyester, so that the relative positions of the amino fatty acid gylcol ester and the molecular chains of the polyester are fixed; under the condition that the temperature is 90-130 DEG C, the free volume space among the molecular chains of fiber of the wool-like differential shrinkage composite filament is increased by 20-30v / v%. Due to adoption of the aliphatic ester, the free volume of the polyester fiber is increased, so that the diffusion degree of dye is increased, and the dyeing property of the polyester fiber is improved. The wool-like differential shrinkage composite filament can be used in the industries such as clothes fabrics, bedding articles and decorative articles.

The invention relates to a polyester fiber DTY (draw textured yarn) with high dyeing rate and a preparation method thereof. The polyester fiber polyester fiber DTY with high dyeing rate is made from modified polyester, the modified polyester is composed of polyester and aminoadipic acid gylcol ester, the aminoadipic acid gylcol ester is dispersed among molecular chains of the polyester, hydrogen-bond interaction exists between the aminoadipic acid gylcol ester and the molecular chains of the polyester, and the relative position of the aminoadipic acid gylcol ester and the molecular chains of the polyester is fixed; the free volume space among the molecular chains inside the fiber is increased by 20-30v / v% when the polyester fiber DTY with high dyeing rate is at 90-130 DEG C, the dying rate of the polyester fiber DTY with high dyeing rate is higher than that of the common fiber when the polyester fiber DTY with high dyeing rate adopts the same dyes such as disperse red 3B, disperse blue SE-2R, disperse bright blue S-GL and the like, less surface dyeing is formed after dyeing, and the polyester fiber DTY with high dyeing rate can be used for garment materials, bedding article decoration and the like.

The invention relates to a super-low-shrinkage water-repellent polyester industrial yarn and a preparation method thereof. The super-low-shrinkage water-repellent polyester industrial yarn is prepared by modified polyester spinning. By the use of the characteristic that at a certain temperature, the increasing amplitude of the free volume of an aminoadipic acid gylcol ester is much larger than that of a polyester macromolecular chain, the interface bonding performance between an organic fluorine water-repellent and oil-repellent finishing agent and polyester fiber is improved; meanwhile, since an amino group is positioned at the initiating end of an aminoadipic acid gylcol ester molecule, the hydrogen-bond interaction between the aminoadipic acid gylcol ester molecule and the polyester macromolecular chain is increased, and the migration is reduced to the most extent. The damage to the regularity and the crystallinity of a polyester structure is avoided, and the excellent performance of the polyester is remained; the wicking height of the super-low-shrinkage water-repellent polyester industrial yarn is smaller than or equal to 0.8 mm. The super-low-shrinkage water-repellent polyester industrial yarn can be used for water-repellent and oil-repellent places needed by industrial textiles.

The invention relates to a differential-shrinkage cotton-like composite filament and preparation method thereof; the differential-shrinkage cotton-like composite filament is a composite filament blended by a modified polyester POY filament and a modified polyester FDY filament; the modified polyester consists of polyester and aminoadipic acid glycol ester; the aminoadipic acid glycol ester is dispersed among the molecular chains of the polyester; and the aminoadipic acid glycol ester takes effect of hydrogen bond among the molecular chains of the polyester, so as to stabilize the positions of the aminoadipic acid glycol ester with respect to the molecular chains of the polyester; in condition of the temperature is 90-130 degrees centigrade, the free volume spaces among the molecular chains inside the fiber of the differential-shrinkage cotton-like composite filament are increased by 20-30v / v%. The aliphatic ester increases the free volume of the polyester fiber in order to increase the diffusion degree of the dye, thereby increasing the dyeing performance of the polyester fiber. The differential-shrinkage cotton-like composite filament is applicable to clothes fabric, bedding article, decoration article, and the like.

The invention relates to a high-modulus and low-shrinkage type activated polyester industry yarn and a preparation method thereof. The high-modulus and low-shrinkage type activated polyester industry yarn is prepared from modified polyester, the modified polyester is composed of polyester and aminoadipic acid gylcol ester, the aminoadipic acid gylcol ester is dispersed among molecular chains of the polyester, hydrogen-bond interaction exists between the aminoadipic acid gylcol ester and the molecular chains of the polyester, and the relative position of the aminoadipic acid gylcol ester and the molecular chains of the polyester is fixed; the free volume space among the molecular chains inside the fibers is increased by 10-15v / v% when the high-modulus and low-shrinkage type activated polyester industry yarn is at 70-80 DEG C, a part of activating agent molecules are dispersed into fiber gaps, more -OHs and -NHs with strong activity are introduced, and the reactivity of the polyester fiber is improved; and the high-modulus and low-shrinkage type activated polyester industry yarn can be applied to light trucks, canvas conveyer belts and the like.