阅读说明：本技术 一种织带用耐腐尼龙纤维 (corrosion-resistant nylon fiber for braid ) 是由 靳飞 于 2019-09-19 设计创作，主要内容包括：本发明公开了一种织带用耐腐尼龙纤维,具体涉及纤维技术领域,制备的尼龙纤维具有较好的力学性能和耐酸碱腐蚀新更难,其中,改性耐腐填料的加入显著提高了所得纤维的耐酸碱腐蚀性能。利用碳化硅、氧化锆、凹凸棒土、碳纳米管配合正硅酸乙酯制备耐腐纤维,碳纳米管中空结构可以容纳碳化硅、氧化锆和凹凸棒土的纳米粒子,利用油酸钠进行分散后,其可以作为纳米二氧化硅生长的载体,形成外面包裹纳米二氧化硅外层的核壳结构粒子,得到耐腐填料,防腐性能较好,可以用于编织织带、松紧带等领域。(the invention discloses an anticorrosive nylon fiber for a mesh belt, and particularly relates to the technical field of fibers. The corrosion-resistant fiber is prepared by matching silicon carbide, zirconium oxide, attapulgite and carbon nano tubes with ethyl orthosilicate, nano particles of the silicon carbide, the zirconium oxide and the attapulgite can be contained in the hollow structures of the carbon nano tubes, and after the nano particles are dispersed by sodium oleate, the hollow structures of the carbon nano tubes can be used as carriers for growth of nano silicon dioxide to form core-shell structure particles with the outer layers of the nano silicon dioxide wrapped outside, so that the corrosion-resistant filler is obtained, has good corrosion resistance, and can be used for the fields of weaving woven ribbons, elastic bands and the like.)

1. The corrosion-resistant nylon fiber for the mesh belt is characterized by being prepared by melt spinning 10-20 parts by weight of modified corrosion-resistant filler and 80-100 parts by weight of nylon 66 resin particles, wherein the modified corrosion-resistant filler is prepared by the following method:

(1) preparation of the corrosion-resistant filler:

putting 5-10 parts of silicon carbide, 5-6 parts of zirconia, 10-12 parts of attapulgite and 3-6 parts of carbon nano tubes into a ball milling tank, adding 4-6 parts of sodium oleate and 20-40 parts of deionized water, carrying out ball milling for 5-10min, then washing and filtering, adding 20-30 parts of tetraethoxysilane, 5-10 parts of saturated ammonia water solution and 30-50 parts of ethanol, stirring and reacting at 200-300rpm for 20-40min, standing at 30-35 ℃ for 2-3h, centrifuging, filtering, roasting the obtained product at 330-340 ℃ for 2-3h in a helium atmosphere to obtain the corrosion-resistant filler;

(2) Modification treatment of the corrosion-resistant filler:

a. adding 10-20 parts of the product obtained in the step (1) into 30-50 parts of hydrochloric acid solution with the mass fraction of 5-10%, dispersing at 40-45 ℃ for 10-20min at 300-400rpm, then adding 5-10 parts of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, continuing dispersing for 3-5min, heating to 70-80 ℃, reacting for 2-4h, filtering, washing with deionized water, and drying to obtain gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane grafted corrosion-resistant filler;

b. completely dissolving 5-10 parts of 4, 4-diaminodiphenyl ether in 30-40 parts of N-methylpyrrolidone, then adding 10-20 parts of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane grafted anticorrosive filler obtained in the step a, reacting for 30-50min at 30-35 ℃ and 300-500rpm, then cooling to 0-2 ℃, dropwise adding 4-6 parts of pyromellitic dianhydride, sealing, reacting for 1-2h at 25-28 ℃ and 200-300rpm, and filtering to obtain the modified anticorrosive filler.

2. the corrosion-resistant nylon fiber for the mesh belt of claim 1, wherein the nylon fiber is prepared by melt spinning the modified corrosion-resistant filler and nylon 66 resin particles, and the spinning process comprises the following steps: the air speed of the circular blowing is 0.3-0.4m/min, the length of a circular blowing air cylinder is 130-150cm, the stretching ratio is 1.8-2.2, the winding tension is 20-22cN, and the winding speed of the spinning is 3500-4000 m/min.

3. the corrosion-resistant nylon fiber for the mesh belt of claim 1, wherein the centrifugal rotation speed in the step (1) is 2000-2200rpm, and the time is 10-15 min.

Technical Field

The invention belongs to the technical field of fibers, and particularly relates to a corrosion-resistant nylon fiber for a braid.

background

the woven belt is made of various yarns as raw materials into narrow-width fabric or tubular fabric. The woven fabric has various varieties and is widely applied to various industrial departments such as clothes, shoe materials, cases, industry, agriculture, military needs, transportation and the like. In the 30 s, the woven belts were produced by manual workshops and made of cotton threads and linen threads. After the establishment of new China, the raw materials for the braid are gradually developed into chinlon, vinylon, terylene, polypropylene, spandex, viscose and the like.

Nylon fiber is one of the synthetic fibers which are put into industrial production at the earliest time in the world, and the yield is the second place in the synthetic fibers. However, in the application process of the woven belt, especially in the application process of bags and elastic belts, the woven belt is often damaged and cracked in repeated use due to poor corrosion resistance and mechanical properties, and the use of the woven belt is affected.

Disclosure of Invention

in view of the above problems, the present invention aims to provide a corrosion resistant nylon fiber for a webbing.

the invention is realized by the following technical scheme:

An anticorrosive nylon fiber for mesh belt is prepared by melt spinning 10-20 parts by weight of modified anticorrosive filler and 80-100 parts by weight of nylon 66 resin particles, wherein the modified anticorrosive filler is prepared by the following method:

(1) preparation of the corrosion-resistant filler:

putting 5-10 parts of silicon carbide, 5-6 parts of zirconia, 10-12 parts of attapulgite and 3-6 parts of carbon nano tubes into a ball milling tank, adding 4-6 parts of sodium oleate and 20-40 parts of deionized water, carrying out ball milling for 5-10min, then washing and filtering, adding 20-30 parts of tetraethoxysilane, 5-10 parts of saturated ammonia water solution and 30-50 parts of ethanol, stirring and reacting at 200-300rpm for 20-40min, standing at 30-35 ℃ for 2-3h, centrifuging, filtering, roasting the obtained product at 330-340 ℃ for 2-3h in a helium atmosphere to obtain the corrosion-resistant filler;

(2) modification treatment of the corrosion-resistant filler:

a. adding 10-20 parts of the product obtained in the step (1) into 30-50 parts of hydrochloric acid solution with the mass fraction of 5-10%, dispersing at 40-45 ℃ for 10-20min at 300-400rpm, then adding 5-10 parts of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, continuing dispersing for 3-5min, heating to 70-80 ℃, reacting for 2-4h, filtering, washing with deionized water, and drying to obtain gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane grafted corrosion-resistant filler;

b. Completely dissolving 5-10 parts of 4, 4-diaminodiphenyl ether in 30-40 parts of N-methylpyrrolidone, then adding 10-20 parts of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane grafted anticorrosive filler obtained in the step a, reacting for 30-50min at 30-35 ℃ and 300-500rpm, then cooling to 0-2 ℃, dropwise adding 4-6 parts of pyromellitic dianhydride, sealing, reacting for 1-2h at 25-28 ℃ and 200-300rpm, and filtering to obtain the modified anticorrosive filler;

further, the nylon fiber is prepared by melt spinning of modified corrosion-resistant filler and nylon 66 resin particles, wherein the spinning process comprises the following steps: the air speed of the circular blowing is 0.3-0.4m/min, the length of a circular blowing air cylinder is 130-150cm, the stretching ratio is 1.8-2.2, the winding tension is 20-22cN, and the winding speed of the spinning is 3500-4000 m/min.

further, the centrifugal speed in the step (1) is 2000-2200rpm, and the time is 10-15 min.

The invention has the beneficial effects that: the nylon fiber prepared by the embodiment of the invention has better mechanical property and is more difficult to resist acid-base corrosion, wherein the acid-base corrosion resistance of the fiber is obviously improved by adding the modified corrosion-resistant filler. The preparation method comprises the steps of preparing corrosion-resistant fibers by using silicon carbide, zirconium oxide, attapulgite and carbon nanotubes to match ethyl orthosilicate, wherein the hollow structure of the carbon nanotubes can contain nano particles of the silicon carbide, the zirconium oxide and the attapulgite, dispersing the nano particles by using sodium oleate, and then using the nano particles as a carrier for growth of the nano silica to form core-shell structure particles outside which a nano silica outer layer is wrapped, so as to obtain the corrosion-resistant filler, wherein the corrosion-resistant filler has good corrosion resistance, the nano silica shell can be subjected to grafting reaction with subsequently added gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, an epoxy group is introduced to the surface of the corrosion-resistant filler and reacts with amino in 4, 4-diaminodiphenyl ether to generate the corrosion-resistant filler, the amino is excessive by controlling the reaction ratio, pyromellitic anhydride is added, and the corrosion-resistant filler reacts with the excessive amino to generate an, the surface of the obtained modified corrosion-resistant filler is rich in amide groups and also contains rigid benzene rings, so that the compatibility of the modified corrosion-resistant filler with a nylon 66 resin substrate is improved, the interface acting force of the modified corrosion-resistant filler is improved, the mechanical property and the wear resistance of the modified corrosion-resistant filler are enhanced, and meanwhile, the acid-base corrosion resistance of the obtained fiber is obviously improved by adding the modified corrosion-resistant filler.

Detailed Description

The invention is illustrated by the following specific examples, which are not intended to be limiting.