1. A process method for grafting and oil-proof treatment on polyester staple fibers by low-temperature plasma treatment is characterized by comprising the following steps:

s1: taking a proper amount of ether solution with the concentration of 15% into a reaction kettle, putting polyester staple fibers into the ether solution, stirring and soaking for 2-3h, and washing with distilled water to obtain polyester staple fibers A;

s2: putting the polyester staple fiber A into a constant-temperature water bath kettle, adding distilled water, boiling for 1-1.5h, drying for 1-2h at the temperature of 60-80 ℃, standing and cooling to room temperature to obtain polyester staple fiber B;

s3: putting a proper amount of m-cresol solution into a reaction kettle, putting the polyester staple fiber B into the reaction kettle, stirring and soaking for 1.5-2h at the constant temperature of 60-70 ℃, washing with water and air-drying to obtain polyester staple fiber C;

s4: placing the polyester staple fiber C into low-temperature plasma grafting equipment, and placing polypropylene and an initiator for grafting treatment to obtain a polypropylene-polyester staple fiber primary product;

s5: and (3) putting the polypropylene-polyester staple fiber primary product into a vacuum drying oven, and drying for 4-5h to obtain a polypropylene-polyester staple fiber finished product.

2. The process method for grafting and oil-proofing treatment of the low-temperature plasma treated polyester staple fiber according to claim 1, wherein the soaking conditions in the S1 are as follows: the soaking temperature is 20 ℃, and the reaction kettle is in a lightless environment.

3. The process method for grafting and oil-proofing treatment of the low-temperature plasma treated polyester staple fiber according to claim 1, wherein the initiator in S4 is one of diisopropyl peroxydicarbonate solution, cyclohexanone peroxide solution, tert-butyl peroxybenzoate solution and benzoyl peroxide, and preferably is diisopropyl peroxydicarbonate solution.

4. The process method for grafting and oil-proofing treatment of the polyester staple fiber through the low-temperature plasma treatment according to claim 1, wherein the vacuum drying condition in the S5 is that the pressure in the cavity of a vacuum drying oven is-0.4 MPa to-0.6 MPa, the temperature is 100 ℃ to 120 ℃, and the drying time is 3-4 h.

Background

Polyester fiber, commonly called 'polyester', is a synthetic fiber obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol, called PET fiber for short, belongs to a high molecular compound, is invented in 1941, is the first major variety of the current synthetic fiber, has the greatest advantages of good crease resistance and shape retention, higher strength and elastic recovery capability, has the advantages of fastness, durability, crease resistance, no ironing, no hair sticking and the like, is grafted, and means that the reaction of combining proper branched chains or functional side groups through chemical bonds on a macromolecular chain, the performance of the formed product called graft copolymer is determined by the composition of a main chain and branched chains, the structure, the length and the number of the branched chains, the graft of the long branched chains is similar to a blend, the graft of the branched chains is similar to a random copolymer, and two polymers with different properties can be grafted together through copolymerization, forming grafts with special properties. Therefore, the graft modification of the polymer becomes a simple and effective method for expanding the application field of the polymer and improving the performance of the high molecular material.

The plasma is the fourth state of matter following solid, liquid and gas states, when the applied voltage reaches the breakdown voltage, the gas molecules are ionized to produce a mixture including electrons, ions, atoms and radicals, the plasma assisted processing is used to make new materials with special excellent properties, develop new chemicals and chemical processes, process, reform and refine materials and their surfaces, and has extremely wide industrial applications ranging from thin film deposition, plasma polymerization, microcircuit fabrication to welding, tool hardening, synthesis of ultra-fine powders, plasma spraying, plasma metallurgy, plasma chemical engineering, microwave sources.

The traditional polyester staple fiber grafting treatment process has certain defects, and the polyester staple fibers contain oil agents, so that the production effect of the polyester staple fibers cannot meet the requirements due to untimely treatment of the oil agents, and the defective rate is high.

Disclosure of Invention

Based on the technical problems in the prior art, the invention provides a process method for grafting and oil-proof treatment on polyester staple fibers by low-temperature plasma treatment.

The invention provides a process method for grafting oil-proof treatment on polyester staple fibers by low-temperature plasma treatment, which comprises the following steps:

s1: taking a proper amount of ether solution with the concentration of 15% into a reaction kettle, putting polyester staple fibers into the ether solution, stirring and soaking for 2-3h, and washing with distilled water to obtain polyester staple fibers A;

s2: putting the polyester staple fiber A into a constant-temperature water bath kettle, adding distilled water, boiling for 1-1.5h, drying for 1-2h at the temperature of 60-80 ℃, standing and cooling to room temperature to obtain polyester staple fiber B;

s3: putting a proper amount of m-cresol solution into a reaction kettle, putting the polyester staple fiber B into the reaction kettle, stirring and soaking for 1.5-2h at the constant temperature of 60-70 ℃, washing with water and air-drying to obtain polyester staple fiber C;

s4: placing the polyester staple fiber C into low-temperature plasma grafting equipment, and placing polypropylene and an initiator for grafting treatment to obtain a polypropylene-polyester staple fiber primary product;

s5: and (3) putting the polypropylene-polyester staple fiber primary product into a vacuum drying oven, and drying for 4-5h to obtain a polypropylene-polyester staple fiber finished product.

Preferably, the soaking conditions in S1 are as follows: the soaking temperature is 20 ℃, and the reaction kettle is in a lightless environment.

Preferably, the initiator in S4 is one of diisopropyl peroxydicarbonate solution, cyclohexanone peroxide solution, tert-butyl peroxybenzoate solution and benzoyl peroxide, and is preferably diisopropyl peroxydicarbonate solution.

Preferably, the vacuum drying condition in the S5 is that the pressure in the cavity of the vacuum drying box is-0.4 MPa to-0.6 MPa, the temperature is 100 ℃ to 120 ℃, and the drying time is 3 to 4 hours.

The invention has the beneficial effects that:

according to the invention, the ether is used for carrying out primary treatment on the oil agent in the polyester short fiber, and the distilled water is used for boiling again to carry out secondary treatment on the polyester short fiber, so that the oil agent in the polyester short fiber can be better treated, the grafting rate of the polyester short fiber and polypropylene is improved, and the yield of subsequent polyester short fiber grafting is improved.

Drawings

FIG. 1 is a graph showing the influence of the soaking time on the grafting ratio in the process of low-temperature plasma treatment for grafting oil-proof treatment of polyester staple fibers according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1: a process method for grafting oil-proof treatment on polyester staple fibers by low-temperature plasma treatment comprises the following steps:

s1: taking a proper amount of ether solution with the concentration of 15% into a reaction kettle, putting polyester short fibers into the ether solution, stirring and soaking for 2 hours, and then washing with distilled water to obtain polyester short fibers A, wherein the soaking conditions are as follows: the soaking temperature is 20 ℃, and the reaction kettle is in a lightless environment;

s2: putting the polyester staple fiber A into a constant-temperature water bath kettle, adding distilled water, boiling for 1-1.5h, drying for 1h at the temperature of 60-80 ℃, standing and cooling to room temperature to obtain polyester staple fiber B;

s3: putting a proper amount of m-cresol solution into a reaction kettle, putting the polyester staple fiber B into the reaction kettle, stirring and soaking for 1.5-2h at the constant temperature of 60-70 ℃, washing with water and air-drying to obtain polyester staple fiber C;

s4: placing the polyester short fiber C into low-temperature plasma grafting equipment, placing polypropylene and an initiator, and performing grafting treatment to obtain a polypropylene-polyester short fiber primary product, wherein the initiator is one of diisopropyl peroxydicarbonate solution, cyclohexanone peroxide solution, tert-butyl peroxybenzoate solution and benzoyl peroxide, and preferably diisopropyl peroxydicarbonate solution;

s5: and putting the polypropylene-polyester staple fiber primary product into a vacuum drying oven, and drying for 4-5h to obtain a polypropylene-polyester staple fiber finished product, wherein the vacuum drying condition is that the pressure in a cavity of the vacuum drying oven is-0.4 MPa to-0.6 MPa, the temperature is 100-120 ℃, and the drying time is 3-4 h.

Example 2: a process method for grafting oil-proof treatment on polyester staple fibers by low-temperature plasma treatment comprises the following steps:

s1: taking a proper amount of ether solution with the concentration of 15% into a reaction kettle, putting polyester short fibers into the ether solution, stirring and soaking for 2.5h, and then washing with distilled water to obtain polyester short fibers A, wherein the soaking conditions are as follows: the soaking temperature is 20 ℃, and the reaction kettle is in a lightless environment;

s2: putting the polyester staple fiber A into a constant-temperature water bath kettle, adding distilled water, boiling for 1-1.5h, drying for 1.5h at the temperature of 60-80 ℃, standing and cooling to room temperature to obtain polyester staple fiber B;

s3: putting a proper amount of m-cresol solution into a reaction kettle, putting the polyester staple fiber B into the reaction kettle, stirring and soaking for 1.5-2h at the constant temperature of 60-70 ℃, washing with water and air-drying to obtain polyester staple fiber C;

s4: placing the polyester short fiber C into low-temperature plasma grafting equipment, placing polypropylene and an initiator, and performing grafting treatment to obtain a polypropylene-polyester short fiber primary product, wherein the initiator is one of diisopropyl peroxydicarbonate solution, cyclohexanone peroxide solution, tert-butyl peroxybenzoate solution and benzoyl peroxide, and preferably diisopropyl peroxydicarbonate solution;

s5: and putting the polypropylene-polyester staple fiber primary product into a vacuum drying oven, and drying for 4-5h to obtain a polypropylene-polyester staple fiber finished product, wherein the vacuum drying condition is that the pressure in a cavity of the vacuum drying oven is-0.4 MPa to-0.6 MPa, the temperature is 100-120 ℃, and the drying time is 3-4 h.

Example 3: a process method for grafting oil-proof treatment on polyester staple fibers by low-temperature plasma treatment comprises the following steps:

s1: taking a proper amount of ether solution with the concentration of 15% into a reaction kettle, putting polyester short fibers into the ether solution, stirring and soaking for 3 hours, and then washing with distilled water to obtain polyester short fibers A, wherein the soaking conditions are as follows: the soaking temperature is 20 ℃, and the reaction kettle is in a lightless environment;

s2: putting the polyester staple fiber A into a constant-temperature water bath kettle, adding distilled water, boiling for 1-1.5h, drying for 2h at the temperature of 60-80 ℃, standing and cooling to room temperature to obtain polyester staple fiber B;

s3: putting a proper amount of m-cresol solution into a reaction kettle, putting the polyester staple fiber B into the reaction kettle, stirring and soaking for 1.5-2h at the constant temperature of 60-70 ℃, washing with water and air-drying to obtain polyester staple fiber C;

s4: placing the polyester short fiber C into low-temperature plasma grafting equipment, placing polypropylene and an initiator, and performing grafting treatment to obtain a polypropylene-polyester short fiber primary product, wherein the initiator is one of diisopropyl peroxydicarbonate solution, cyclohexanone peroxide solution, tert-butyl peroxybenzoate solution and benzoyl peroxide, and preferably diisopropyl peroxydicarbonate solution;

s5: and putting the polypropylene-polyester staple fiber primary product into a vacuum drying oven, and drying for 4-5h to obtain a polypropylene-polyester staple fiber finished product, wherein the vacuum drying condition is that the pressure in a cavity of the vacuum drying oven is-0.4 MPa to-0.6 MPa, the temperature is 100-120 ℃, and the drying time is 3-4 h.

Infrared spectroscopy detection

The polypropylene-polyester staple fiber finished products in the three examples were tested by infrared spectroscopy, and the test results are shown in fig. 1.

In summary, the embodiment 2 is the best embodiment of the present invention.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.