阅读说明：本技术 一种高弹涤纶纱及其制备方法 (High-elastic polyester yarn and preparation method thereof ) 是由 朱靓韬 朱忠华 戴掌华 倪金虎 童赛平 于 2019-09-27 设计创作，主要内容包括：本发明涉及涤纶纱制备领域,更具体地说,它涉及一种高弹涤纶纱及其制备方法,包括以下质量份数的组分：涤纶母粒60-80份；聚乳酸纤维粉25-30份；热塑性聚氨酯弹性体5-10份；相容剂2-5份；树木灰烬12-18份；抗氧剂2-3份。制备时先按质量份将物料预处理；再将物料进行混合得到混合物A；下一步再将混合物A进行熔融后挤出,得到熔体B；下一步对熔体B进行冷却并得到涤纶线C；涤纶丝C经过拉伸和定型后得到涤纶丝E；下一步对涤纶丝E涂覆油液并对涤纶丝E进行拉伸和定型,最后对涤纶丝E加捻成纱并进行收卷。本申请的有益效果：制得的涤纶纱具有弹性好的优点,可将该涤纶纱应用于制备紧身款的运动服。(The invention relates to the field of polyester yarn preparation, in particular to a high-elasticity polyester yarn and a preparation method thereof, wherein the high-elasticity polyester yarn comprises the following components in parts by mass: 60-80 parts of terylene master batch; 25-30 parts of polylactic acid fiber powder; 5-10 parts of a thermoplastic polyurethane elastomer; 2-5 parts of a compatilizer; 12-18 parts of tree ash; 2-3 parts of an antioxidant. The preparation method comprises the following steps of pretreating materials in parts by mass; then mixing the materials to obtain a mixture A; next, melting the mixture A and then extruding to obtain a melt B; next, cooling the melt B to obtain a polyester yarn C; stretching and shaping the polyester yarn C to obtain polyester yarn E; and coating oil liquid on the polyester yarn E, stretching and shaping the polyester yarn E, and finally twisting the polyester yarn E into yarn and winding. The beneficial effect of this application: the prepared polyester yarn has the advantage of good elasticity, and can be applied to the preparation of close-fitting sportswear.)

1. A high-elastic polyester yarn is characterized in that: the paint comprises the following components in parts by mass: 60-80 parts of terylene master batch; 25-30 parts of polylactic acid fiber powder; 5-10 parts of a thermoplastic polyurethane elastomer; 2-5 parts of a compatilizer; 12-18 parts of tree ash; 2-3 parts of an antioxidant.

2. The high-elastic polyester yarn as claimed in claim 1, wherein: the high-elasticity polyester yarn comprises the following components in parts by mass:

75 parts of terylene master batch;

30 parts of polylactic acid fiber powder;

8 parts of a thermoplastic polyurethane elastomer;

4.6 parts of a compatilizer;

17.5 parts of tree ash;

and 3 parts of an antioxidant.

3. The high-elastic polyester yarn as claimed in claim 2, wherein: the compatilizer is formed by mixing maleic anhydride grafted EVA and maleic anhydride grafted HDPE according to the mass ratio of 1-2: 0.5-1.2.

4. The high-elastic polyester yarn as claimed in claim 3, wherein: the tree ash is modified tree ash, and the preparation method of the modified tree ash comprises the following steps:

boiling the tree ash with 15-20% hydrogen peroxide for 15-20min, cleaning with distilled water, drying in a drying oven at the temperature of 110-120 ℃, adding 5-8 parts by mass of sodium lignosulphonate, 2-3 parts by mass of polyisobutylene and 5-7 parts by mass of talcum powder, stirring in a water bath at the temperature of 80-90 ℃ at a high speed for 2-3h, drying, crushing and grinding into superfine powder to obtain the modified tree ash.

5. The high-elastic polyester yarn as claimed in claim 4, wherein: the mesh number of the modified tree ash is 600 meshes and 1000 meshes.

6. The high-elastic polyester yarn as claimed in claim 4, wherein: the talcum powder for preparing the modified tree ash is modified talcum powder, and the modified talcum powder is prepared by the following steps:

roasting talc at the temperature of 350-400 ℃ for 1-2 hours, soaking the talc in 10-15% hydrogen peroxide for 2-3 hours, standing, centrifuging, washing with deionized water, drying, adding 5-10 parts by mass of vinyltriethoxysilane, 4-8 parts by mass of cyclohexane and 2-3 parts by mass of cross-linking agent TAC, uniformly stirring at the high speed of 1000-1500 rpm, drying and crushing into ultrafine powder to obtain the modified talc.

7. The high-elastic polyester yarn as claimed in claim 2, wherein: the antioxidant is a mixture of an antioxidant 1098 and an antioxidant 168 in a mass ratio of 1.3-1.5: 1.

8. A method for preparing the high elastic polyester yarn according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:

s1, pretreatment of materials: drying the polyester master batch with corresponding mass parts at 85-90 ℃ for 3-4 hours to remove the surface moisture of the polyester master batch; drying polylactic acid fiber powder and a thermoplastic polyurethane elastomer in corresponding parts by mass in a drying oven at the temperature of 70-80 ℃ for 1-2 hours;

s2, adding the terylene master batch obtained in the step S1, polylactic acid fiber powder, thermoplastic polyurethane elastomer, compatilizer and antioxidant into a high-speed stirrer, and mixing and stirring at room temperature for 3-4 hours to obtain a mixture A;

s3, adding the mixture A into a screw extruder through a main feeding port, controlling the processing temperature of the screw extruder at 220-280 ℃, and extruding after melting to obtain a melt B; cooling the melt B to form polyester yarns C, and sequentially feeding the polyester yarns C through a first roller, heating the polyester yarns C through an upper hot box, stretching the polyester yarns C through a second roller, shaping the polyester yarns C through a lower hot box, and further shaping the polyester yarns C through a third roller to obtain polyester yarns D;

s4, coating oil liquid: s3, moving the prepared polyester yarn D to a liquid coating area from a third roller, arranging an oil applying roller coated with oil at the liquid coating area, coating the oil on the surface of the polyester yarn D by the oil applying roller, then stretching after coating the oil on the surface of the polyester yarn D by the oil applying roller, arranging a fourth stretching roller group between the oil applying roller and a winding roller, stretching the polyester yarn D by the fourth stretching roller group with the stretching multiple of 1.1-1.3 and the stretching temperature of the fourth stretching roller group of 110-;

s5, twisting to form yarn: and twisting and forming the polyester yarns C, drying, and then placing at 80-90 ℃ for heat preservation for 10-15min to obtain the high-elasticity polyester yarns.

9. The method for preparing the high-elasticity polyester yarn as claimed in claim 8, wherein the method comprises the following steps: the oil liquid in the step S4 is a mixture of polyester smoothing agent and blumea oil according to the mass ratio of 1-2: 0.5-1.

10. The method for preparing the high-elasticity polyester yarn as claimed in claim 9, wherein the method comprises the following steps: the concentration range of the terylene smoothing agent is 3.5-5.0%.

Technical Field

The invention relates to the technical field of polyester yarn preparation, in particular to high-elasticity polyester yarn and a preparation method thereof.

Background

The polyester yarn is yarn spun by using polyester as a raw material, the polyester is one of important varieties in synthetic fibers, and the polyester yarn is fiber prepared by using polyethylene terephthalate (PET) obtained by esterification or ester exchange polycondensation reaction of fine terephthalic acid or terephthalate and ethylene glycol as raw materials, and spinning and post-processing the PET.

Disclosure of Invention

Aiming at the defects in the prior art, the first purpose of the invention is to provide a high-elasticity polyester yarn which has the advantage of good elasticity.

The second purpose of the invention is to provide a preparation method of high-elasticity polyester yarn, the prepared polyester yarn has the advantage of good elasticity, and the polyester yarn can be applied to the preparation of close-fitting sportswear.

In order to achieve the purpose, the invention provides the following technical scheme:

the high-elasticity polyester yarn comprises the following components in parts by mass:

60-80 parts of terylene master batch;

25-30 parts of polylactic acid fiber powder;

5-10 parts of a thermoplastic polyurethane elastomer;

2-5 parts of a compatilizer;

12-18 parts of tree ash;

2-3 parts of an antioxidant.

By adopting the technical scheme, the polyester master batch is used as a basic raw material for preparing the polyester yarn, and the polylactic acid fiber powder is added, so that the prepared polyester yarn has silk glossiness, excellent skin contact property, smooth and fine hand feeling, excellent drapability and softness, and good air permeability, and when the polyester yarn is applied to preparing close-fitting sports clothes, the sports clothes have excellent moisture absorption and sweat releasing properties and elasticity; the thermoplastic polyurethane elastomer has the characteristics of wear resistance, high elasticity and the like, and can be blended with the polyester master batch and the polylactic acid fiber powder to improve the elasticity and wear resistance of the prepared polyester yarn; the addition of the compatilizer is favorable for improving the crosslinking degree among the raw materials, so that the terylene master batch, the polylactic acid fiber powder and the thermoplastic polyurethane elastomer can be better combined together, the bonding force among the raw materials is increased, the continuous phase and the dispersed phase can be uniformly distributed to form a stable structure, the interfacial tension is reduced, and a stable blend is obtained; the addition of the tree ashes is beneficial to improving the dispersibility among the raw materials, so that the polylactic acid fiber powder and the thermoplastic polyurethane elastomer can be more uniformly dispersed in the whole system of the raw materials of the polyester yarns, and the improvement of the overall elasticity and the wear resistance of the polyester yarns is facilitated; the addition of the antioxidant is beneficial to delaying the oxidation process of the raw materials for preparing the polyester yarns in the blending modification; in conclusion, the polyester yarn prepared from the raw materials can be applied to the preparation of close-fitting sports clothes, and the prepared sports clothes have good elasticity, skin-friendly property and air permeability, and are favorable for improving the comfort degree of sportsmen wearing the sports clothes.

Further, the high-elasticity polyester yarn comprises the following components in parts by mass:

75 parts of terylene master batch;

30 parts of polylactic acid fiber powder;

8 parts of a thermoplastic polyurethane elastomer;

4.6 parts of a compatilizer;

17.5 parts of tree ash;

and 3 parts of an antioxidant.

By adopting the technical scheme, the raw materials of the high-elastic polyester yarns are prepared strictly according to the proportion, so that the elasticity and the moisture absorption and sweat releasing performance of the prepared polyester yarns are better, the polyester yarns can be applied to the preparation of sports wear, and the sports wear can be suitable for people with large sports sweat discharging amount.

Further, the compatilizer is formed by mixing maleic anhydride grafted EVA and maleic anhydride grafted HDPE according to the mass ratio of 1-2: 0.5-1.2.

By adopting the technical scheme, the compatibility of the thermoplastic polyurethane elastomer and the polyester master batch can be improved by grafting the calcium maleate with the EVA; the maleic anhydride grafted HDPE has excellent tensile property and high cohesiveness, and the maleic anhydride grafted HDPE and the high cohesiveness are matched and added into the raw materials for preparing the polyester yarns, so that the raw materials for preparing the polyester yarns can be more uniformly combined, and meanwhile, the elasticity of the prepared polyester yarns is improved.

Further, the tree ash is modified tree ash, and the preparation method of the modified tree ash comprises the following steps:

boiling the tree ash with 15-20% hydrogen peroxide for 15-20min, cleaning with distilled water, drying in a drying oven at the temperature of 110-120 ℃, adding 5-8 parts by mass of sodium lignosulphonate, 2-3 parts by mass of polyisobutylene and 5-7 parts by mass of talcum powder, stirring in a water bath at the temperature of 80-90 ℃ at a high speed for 2-3h, drying, crushing and grinding into superfine powder to obtain the modified tree ash.

By adopting the technical scheme, the modified tree ash is easier to bond with the interface of the lactic acid fiber powder and the thermoplastic polyurethane elastomer, and under the action of external force, the modified tree ash particles are beneficial to improving the dispersibility of the polylactic acid fiber powder and the thermoplastic polyurethane elastomer in a polyester yarn raw material system, so that the overall elasticity and tensile strength of the prepared polyester yarn are improved.

Further, the mesh number of the modified tree ash is 600-1000 meshes.

Further, the talcum powder for preparing the modified tree ash is modified talcum powder, and the modified talcum powder is prepared by the following steps:

roasting talc at the temperature of 350-400 ℃ for 1-2 hours, soaking the talc in 10-15% hydrogen peroxide for 2-3 hours, standing, centrifuging, washing with deionized water, drying, adding 5-10 parts by mass of vinyltriethoxysilane, 4-8 parts by mass of cyclohexane and 2-3 parts by mass of cross-linking agent TAC, uniformly stirring at the high speed of 1000-1500 rpm, drying and crushing into ultrafine powder to obtain the modified talc.

By adopting the technical scheme, the talcum powder is modified, so that the strength of the talcum powder is improved, the talcum powder is favorable to show good fluidity, and the modified talcum powder is applied to modified tree ash, so that the dispersibility, the wear resistance, the toughness and other properties of the modified tree ash are improved.

Further, the antioxidant is a mixture of an antioxidant 1098 and an antioxidant 168 in a mass ratio of 1.3-1.5: 1.

By adopting the technical scheme, the antioxidant 1098 and the antioxidant 168 are mixed to play a synergistic role, so that the polyester yarn has excellent antioxidant performance on the polyester master batch, the polylactic acid fiber powder and the thermoplastic polyurethane elastomer, and the service life of the prepared polyester yarn is prolonged.

In order to achieve the second object, the invention provides the following technical scheme:

a preparation method of high-elastic polyester yarn comprises the following steps:

s1, pretreatment of materials: drying the polyester master batch with corresponding mass parts at 85-90 ℃ for 3-4 hours to remove the surface moisture of the polyester master batch; drying polylactic acid fiber powder and a thermoplastic polyurethane elastomer in corresponding parts by mass in a drying oven at the temperature of 70-80 ℃ for 1-2 hours;

s2, adding the terylene master batch obtained in the step S1, polylactic acid fiber powder, thermoplastic polyurethane elastomer, compatilizer and antioxidant into a high-speed stirrer, and mixing and stirring at room temperature for 3-4 hours to obtain a mixture A;

s3, adding the mixture A into a screw extruder through a main feeding port, controlling the processing temperature of the screw extruder at 220-280 ℃, and extruding after melting to obtain a melt B; cooling the melt B to form polyester yarns C, and sequentially feeding the polyester yarns C through a first roller, heating the polyester yarns C through an upper hot box, stretching the polyester yarns C through a second roller, shaping the polyester yarns C through a lower hot box, and further shaping the polyester yarns C through a third roller to obtain polyester yarns D;

s4, coating oil liquid: s3, moving the prepared polyester yarn D to a liquid coating area from a third roller, arranging an oil applying roller coated with oil at the liquid coating area, coating the oil on the surface of the polyester yarn D by the oil applying roller, then stretching after coating the oil on the surface of the polyester yarn D by the oil applying roller, arranging a fourth stretching roller group between the oil applying roller and a winding roller, stretching the polyester yarn D by the fourth stretching roller group with the stretching multiple of 1.1-1.3 and the stretching temperature of the fourth stretching roller group of 110-;

s5, twisting to form yarn: and twisting and forming the polyester yarns C, drying, and then placing at 80-90 ℃ for heat preservation for 10-15min to obtain the high-elasticity polyester yarns.

Further, the oil liquid in the step S4 is a mixture of the terylene smoothing agent and the blumea oil according to the mass ratio of 1-2: 0.5-1.

By adopting the technical scheme, the polyester smoothing agent is beneficial to improving the smoothness and the antistatic performance of the surface of the polyester yarn and the cohesive force of the polyester yarn, so that the surface of the prepared polyester yarn is kept smooth, the wearing comfort of a wearer can be better improved when the prepared polyester yarn is applied to clothing preparation, and the addition of the moxa leaf oil is beneficial to improving the antibacterial performance of the polyester yarn.

Further, the concentration range of the terylene smoothing agent is 3.5-5.0%.

In conclusion, the invention has the following beneficial effects:

1. due to the addition of the polylactic acid fiber powder, the prepared polyester yarn has silky glossiness, excellent skin contact property, smooth and fine hand feeling, excellent draping feeling and softness, and good air permeability and antibacterial performance; the thermoplastic polyurethane elastomer has the characteristics of wear resistance, high elasticity and the like, and can be blended with the polyester master batch and the polylactic acid fiber powder to improve the elasticity and wear resistance of the prepared polyester yarn; the addition of the compatilizer is beneficial to improving the crosslinking degree among the raw materials, so that the terylene master batch, the polylactic acid fiber powder and the thermoplastic polyurethane elastomer can be better combined together, the bonding force among the raw materials is increased, the continuous phase and the dispersed phase can be uniformly distributed, a stable structure is formed, and the interfacial tension is reduced.

2. The addition of the modified tree ashes is beneficial to improving the dispersibility among the raw materials, so that the polylactic acid fiber powder and the thermoplastic polyurethane elastomer can be more uniformly dispersed in the whole system of the polyester yarn raw materials, and the improvement of the overall elasticity and the wear resistance of the polyester yarn is facilitated.

3. The material is added into the screw extruder after being pretreated and is extruded by the screw extruder to obtain a melt B, the melt B is cooled to obtain polyester yarn C, the polyester yarn C is stretched and shaped to obtain polyester yarn D, the oil is coated on the surface of the polyester yarn D by the oil applying roller, the smoothness and the antibacterial performance of the polyester yarn D are improved, meanwhile, the smoothness and the antistatic performance of the surface of the polyester yarn D are improved, the polyester yarn is obtained after the polyester yarn C is twisted into yarns, the polyester yarn is applied to the preparation of sports wear, and the sports wear has better resilience and wear resistance.

Detailed Description

The present invention will be described in further detail with reference to examples.