阅读说明：本技术 一种抗静电高性能纤维处理剂及其制备方法和应用 (Antistatic high-performance fiber treating agent and preparation method and application thereof ) 是由 李颖君 吴英 华里发 于 2020-07-06 设计创作，主要内容包括：本发明涉及一种抗静电高性能纤维处理剂及其制备方法和应用,所述的抗静电高性能纤维处理剂,按重量份计,包括：水溶性聚酰亚胺5-10份、分子量不大于1500的中低分子量聚乙二醇5-20份、低分子量的聚丙二醇5-10份、分子量在1800-2400区间的丙二醇嵌段聚醚5-25份、聚季胺盐-7 5-10份、脂肪醇聚氧乙烯醚2-5份、水40-60份,上述组分混合得到的混合物,用聚羧酸类螯合分散剂中和,至pH为6-8。本发明还提供了上述处理剂的制备方法及应用。本发明可在纤维外面形成包裹层,赋予纤维优良的保湿、润滑、抗静电性能,减少纤维在纺纱、织造过程中产生的静电,纤维集束性提高,减少毛丝,提高织造产品的质量。(The invention relates to an antistatic high-performance fiber treating agent, a preparation method and an application thereof, wherein the antistatic high-performance fiber treating agent comprises the following components in parts by weight: 5-10 parts of water-soluble polyimide, 5-20 parts of medium-low molecular weight polyethylene glycol with the molecular weight not more than 1500, 5-10 parts of low molecular weight polypropylene glycol, 5-25 parts of propylene glycol block polyether with the molecular weight within the interval of 1800-2400, 75-10 parts of polyquaternary ammonium salt, 2-5 parts of fatty alcohol-polyoxyethylene ether and 40-60 parts of water, wherein the mixture obtained by mixing the components is neutralized by a polycarboxylic acid chelating dispersant until the pH value is 6-8. The invention also provides a preparation method and application of the treating agent. The invention can form a wrapping layer outside the fiber, endows the fiber with excellent moisture-keeping, lubricating and antistatic properties, reduces the static electricity generated in the spinning and weaving process of the fiber, improves the fiber bundling property, reduces broken filaments and improves the quality of weaving products.)

1. An antistatic high-performance fiber treating agent comprises the following components in parts by weight:

5-10 parts of water-soluble polyimide

Medium-low molecular weight polyethylene glycol with molecular weight not more than 1500

5-20 parts of

5-10 parts of low-molecular-weight polypropylene glycol

Propylene glycol block polyether with molecular weight in 1800-2400 range

5-25 parts of

75-10 parts of polyquaternary ammonium salt

2-5 parts of fatty alcohol-polyoxyethylene ether

40-60 parts of water, namely,

the mixture obtained by mixing the components is neutralized by polycarboxylic acid chelating dispersant until the pH value is 6-8.

2. The antistatic high-performance fiber treating agent according to claim 1, wherein the water-soluble polyimide is selected from water-soluble polyimide liquid YE-1066, 1022 having a pH value of 10-12.

3. The antistatic high-performance fiber treating agent according to claim 1, wherein the medium-low molecular weight polyethylene glycol is one or a mixture of PEG400-PEG 1500.

4. The antistatic high-performance fiber treating agent according to claim 1, wherein the low molecular weight polypropylene glycol is one of PPG-200, PPG-400, PPG-600 or a mixture thereof.

5. The antistatic high-performance fiber treating agent according to claim 1, wherein the fatty alcohol-polyoxyethylene ether is fatty alcohol-polyoxyethylene ether AEO-5, AEO-7, AEO-9, AEO-10 or a mixture thereof.

6. The antistatic high-performance fiber treating agent according to claim 1, wherein the polycarboxylic acid type chelating dispersant comprises at least: polyacrylic acid, polymaleic acid, maleic acid-acrylic acid copolymers or 2-phosphonobutane-1, 2, 4-tricarboxylic acid.

7. A method for preparing the antistatic high-performance fiber treating agent according to any one of claims 1 to 6, characterized by comprising the following preparation steps:

1) adding water-soluble polyimide into water, stirring and dissolving;

2) sequentially adding polyethylene glycol, polypropylene glycol, propylene glycol block polyether, polyquaternary ammonium salt-7 and fatty alcohol-polyoxyethylene ether while stirring until the materials are completely dispersed and dissolved; then, the user can use the device to perform the operation,

3) adding a polycarboxylic acid chelating dispersant while stirring, and adjusting the pH value of the system to 6-8;

4) and adding the rest water, stirring uniformly, and standing until the solution is stable to obtain the antistatic high-performance fiber treating agent.

8. Use of the antistatic high-performance fiber treatment agent according to any one of claims 1 to 6 for surface treatment of polyimide fibers.

9. The use of the antistatic high-performance fiber treatment agent according to claim 8, wherein the method for surface treatment of polyimide fibers and aramid fibers comprises the steps of:

preparing 2-5% of working solution, placing the working solution into a trough, immersing the fibers into the working solution for 30-40s at 25-40 ℃, then drying at 120-180 ℃ for 200s, and rolling.

Technical Field

The invention relates to the field of preparation and application of high-performance organic fiber treating agents, in particular to a preparation method and application of an antistatic high-performance fiber treating agent, and is particularly suitable for antistatic treating agents for polyimide fibers and aramid fibers.

Technical Field

Polyimide fiber and aramid fiber are important varieties of high-performance fiber, have excellent performances such as high strength, high modulus, high temperature resistance and light weight, are also very excellent in chemical corrosivity such as acid and alkali resistance, insulativity and ageing resistance, have long service life, can be used for a long time under severe environmental conditions, and are widely applied to the fields of aerospace, insulation and obstruction, environmental protection and the like. Compared with aramid fiber, the polyimide fiber has higher heat-resistant grade, better flame retardance and better weather resistance.

The polyimide fiber and the aramid fiber which are sold in the market have smooth surface appearance and excellent mechanical property, and can be used as a reinforced material to be compounded with resin to prepare the reinforced composite material. In the process of the fiber and resin compounding technology, the wettability of the fiber and a resin matrix is influenced to a certain degree by the smooth surface structure of the fiber, and the interface bonding strength of the composite material is further influenced. The polyimide fiber and the aramid fiber have high surface specific resistance, relatively poor bundling property and small cohesive force, static electricity is easy to generate due to friction in the spinning and weaving processes, broken filaments are easy to appear, difficulty is brought to spinning and weaving of fabrics, the defects on the surfaces of the fabrics are many, the high-quality product rate is low, and the surface performance of the fibers needs to be further improved.

Disclosure of Invention

The invention aims to provide an antistatic high-performance fiber treating agent, which is used for reducing static electricity generated in the spinning and weaving processes of fibers, reducing the specific resistance of the surfaces of the fibers, improving the cohesive force of the fibers, reducing the occurrence of broken filaments and improving the quality of woven products.

Still another object of the present invention is to provide a method for preparing the above antistatic high-performance fiber treating agent.

Still another object of the present invention is to provide use of the above antistatic high-performance fiber treating agent.

The purpose of the invention is realized by the following scheme: an antistatic high-performance fiber treating agent comprises the following components in parts by weight:

5-10 parts of water-soluble polyimide

Medium-low molecular weight polyethylene glycol with molecular weight not more than 1500

5-20 parts of

5-10 parts of low-molecular-weight polypropylene glycol

Propylene glycol block polyether with molecular weight in 1800-2400 range

5-25 parts of

75-10 parts of polyquaternary ammonium salt

2-5 parts of fatty alcohol-polyoxyethylene ether

40-60 parts of water, namely,

the mixture obtained by mixing the components is neutralized by polycarboxylic acid chelating dispersant until the pH value is 6-8.

The invention is used for fiber surface treatment, forms a wrapping layer outside the fiber, improves the fiber surface performance, endows the fiber with excellent moisture retention, lubrication and antistatic performance, can reduce the static generated in the spinning and weaving process of the fiber, improves the fiber bundling property, reduces the occurrence of broken filaments, and improves the quality of weaving products.

Specifically, the water-soluble polyimide accounts for 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 or 10 parts by weight.

The weight parts of the medium and low molecular weight polyethylene glycol with the molecular weight not more than 1500 are 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 parts.

The weight portion of the low molecular weight polypropylene glycol is 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 or 10 portions.

The weight portion of the propylene glycol block polyether with the molecular weight of 1800-2400 is 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or 25 portions.

The polyquaternary ammonium salt-7 weight parts are 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 or 10 parts.

The fatty alcohol-polyoxyethylene ether accounts for 2, 2.5, 3, 3.5, 4, 4.5 or 5 parts by weight.

In addition to the above-mentioned embodiments, the water-soluble polyimide is preferably a water-soluble polyimide liquid YE-1066, 1022 having a pH of 10 to 12. For example, the water-soluble polyimide liquid YE-1066 and 1022 products of Shanghai Yehe Industrial and trade Co.

Preferably, the medium-low molecular weight polyethylene glycol is one or a mixed product of PEG400-PEG1500, and has the functions of moisturizing, lubricating and antistatic.

Preferably, the low molecular weight polypropylene glycol is one or a mixture of PPG-200, PPG-400 and PPG-600, and has the functions of lubrication, solubilization, antistatic property and defoaming.

In the system, the propylene glycol block polyether with the molecular weight of 1800-2400 region is an excellent wetting agent, can increase the permeability of a carrier, and has a durable electrostatic protection effect on synthetic fibers.

Preferably, the fatty alcohol-polyoxyethylene ether can be fatty alcohol-polyoxyethylene ether AEO-5, AEO-7, AEO-9, AEO-10 or a mixture of a plurality of the fatty alcohol-polyoxyethylene ether, so that the permeability is increased.

In the system, polyquaternary ammonium salt-7 is polyquaternary ammonium salt cationic high molecular polymer, has adsorption property, wettability, flexibility and film forming property, and is commonly used for daily chemical products to have the effects of moisture retention, static resistance, smoothness and the like.

Preferably, the polycarboxylic acid chelate dispersion

The invention also provides a preparation method of the antistatic high-performance fiber treating agent, which comprises the following preparation steps:

1) adding water-soluble polyimide into water, stirring and dissolving;

2) sequentially adding polyethylene glycol, polypropylene glycol, propylene glycol block polyether, polyquaternary ammonium salt-7 and fatty alcohol-polyoxyethylene ether while stirring until the materials are completely dispersed and dissolved; then, the user can use the device to perform the operation,

3) adding a polycarboxylic acid chelating dispersant while stirring, and adjusting the pH value of the system to 6-8;

4) and adding the rest water, uniformly stirring, and standing until the solution is stable to obtain the antistatic high-performance fiber treating agent for the polyimide fiber.

The invention provides an application of the antistatic high-performance fiber treating agent, which is used for surface treatment of polyimide fibers. The resin component in the treating agent forms a transition layer on the surface of the polyimide fiber, so that the wettability of the polyimide fiber and a resin matrix is effectively improved, and the mechanical engagement and chemical combination of the fiber and the resin matrix are facilitated.

The method for the surface treatment of the polyimide fiber comprises the following steps:

preparing 2-5% of working solution, placing the working solution into a trough, immersing the fibers into the working solution for 30-40s at 25-40 ℃, then drying at 120-180 ℃ for 200s, and rolling.

The invention also provides application of the antistatic high-performance fiber treating agent for surface treatment of aramid fibers.

The invention relates to a method for aramid fiber surface treatment, which comprises the following steps:

preparing 2-5% of working solution, placing the working solution into a trough, immersing the fibers into the working solution for 30-40s at 25-40 ℃, then drying at 120-180 ℃ for 200s, and rolling.

The invention has the advantages that: the invention is used for fiber surface treatment, forms a wrapping layer outside the fiber, improves the fiber surface performance, endows the fiber with excellent moisture retention, lubrication and antistatic performance, can reduce the static generated in the spinning and weaving process of the fiber, improves the fiber bundling property, reduces the occurrence of broken filaments, and improves the quality of weaving products. Meanwhile, the resin component in the treating agent forms a transition layer on the surface of the fiber, so that the wettability of the fiber and a resin matrix is effectively improved, and the mechanical engagement and chemical combination of the fiber and the resin matrix are facilitated.

Detailed Description

The present invention will be further described with reference to the following examples.