CN108193479B - Hydrophilic polyester and production method of blended fabric thereof - Google Patents

Abstract

The invention discloses a production method of a hydrophilic polyester and its blended fabric. The production method comprises the following steps: (1) Scouring: adding a scouring solution to the fabric, the liquor ratio is 1:14-16; 95~100℃, keep warm for 28~32min; reduce to 42~45℃ at 5.0℃/min, wash 2~3 times at 42~45℃; scouring liquid includes degreaser, scouring agent, chelating agent and alkali agent; ( 2) Hydrophilic finishing: add the hydrophilic finishing solution to the fabric, the bath ratio is 1:4~6; add it to the microwave reactor, seal the reactor, microwave 3 times, each microwave for 58~61s, and the first time between different microwaves The reactor was unsealed and adjusted to normal pressure and then sealed; the pH of the acetic acid solution was adjusted to neutrality, and washed with water for 2~3 times; dried at 105~110°C, and set at 175~180°C; the hydrophilic finishing liquid included PVA, EVOH, Catalyst, ethanol; has the advantage of improving durability.

Description

A kind of production method of hydrophilic polyester and its blended fabric

technical field

The invention relates to a production method of hydrophilic polyester and its blended fabric.

Background technique

Although polyester fabric has the advantages of good elasticity, high strength and initial modulus, but because it is a typical hydrophobic fiber, the standard moisture regain is only 0.4%, so it is easy to generate static electricity, easy to stain, and has poor water and sweat absorption. Stuffy feeling, thus affecting the wearing comfort of polyester fabrics. To this end, the hydrophilic finishing agent for polyester fabrics came into being. By finishing polyester fabrics with hydrophilic finishing agents, the wearing comfort, antistatic property and decontamination performance have been improved to a certain extent. There are many types of hydrophilic finishing agents, but most of them suffer from poor durability.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a production method of hydrophilic polyester and its blended fabric, which has the advantage of improving durability.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

A production method of hydrophilic polyester and its blended fabric, comprising the following steps:

(1) Scouring: prepare scouring solution at room temperature; add fabric, the bath ratio is 1:14~16; raise to 95~100°C at 1.5°C/min, keep warm for 28~32min; drop to 42~32min at 5.0°C/min 45℃, change to 42~45℃ water and wash 2~3 times;

The formula of scouring liquid is: degreaser 1.5~2.5g/l, scouring agent 0.8~1.2g/l, chelating agent 0.05~0.08g/l and alkali agent 3.0~4.0g/l, the balance is water;

(2) Hydrophilic finishing: prepare a hydrophilic finishing solution at room temperature; add fabric, the bath ratio is 1:4~6; add to the microwave reactor, seal the reactor, rotate the reactor, microwave 3 times, each time The microwave time was 58~61s. The reactor was first unsealed and adjusted to normal pressure before being sealed between different microwaves; then the pH was adjusted to neutrality with acetic acid aqueous solution, and washed with water for 2~3 times; drying at 105~110°C Dry, set at 175~180℃;

The formula of the hydrophilic finishing solution is: PVA 40~45g/l, EVOH 44~48g/l, catalyst 1.1~1.3g/l, ethanol 2.0~3.0g/l, water 30.0~35.0g/l, the balance is DMSO .

It is further preferred that: in step (1), the degreasing agent is Tween-80.

It is further preferred that: in step (1), the scouring agent comprises 8-12 wt% of octylphenol polyoxyethylene ether and 88-92 wt% of dodecylbenzene sulfonate.

It is further preferred that: in step (2), the catalyst comprises 20-25wt% NaHCO ₃ and 75-80wt% NaOH.

It is further preferred that: in step (2), the PVA selects complete alcoholysis type and low polymerization degree type, and its alcoholysis degree is 98~100%, and its weight average molecular weight is 2.5×10 ⁴ ~3.5×10 ⁴ .

It is further preferred that: in step (2), in terms of molar ratio, the copolymerization ratio of EVOH is 32-44% of ethylene and 56-68% of vinyl alcohol.

It is further preferred that: in step (2), the EVOH selects F101 type resin from Japan Kuraray Company.

Further preferably: comprising the following steps:

(1) Scouring: prepare scouring solution at room temperature; add fabric, the bath ratio is 1:15; raise the temperature to 97°C at 1.5°C/min, keep the temperature for 30 minutes; drop to 43°C at 5.0°C/min, and change to 43°C water Wash 2~3 times;

The formula of scouring liquid is: degreaser 2.0g/l, scouring agent 1.0g/l, EDTA 0.06g/l and NaOH 3.5g/l, and the balance is water;

Degreasing agent is Tween-80;

The scouring agent includes 10wt% of octylphenol polyoxyethylene ether and 90wt% of dodecylbenzene sulfonate;

(2) Hydrophilic finishing: prepare a hydrophilic finishing solution at room temperature; add fabric, the bath ratio is 1:5; add to the microwave reactor, seal the reactor, rotate the reactor, microwave 3 times, each time the microwave is used For 60 s, the reactor was first unsealed and adjusted to normal pressure before being sealed between different times of microwave; then the pH was adjusted to neutrality with acetic acid aqueous solution, and washed with water for 2~3 times; dried at 108°C and set at 178°C ;

The formula of the hydrophilic finishing solution is: PVA 42g/l, EVOH 46g/l, catalyst 1.2g/l, ethanol 2.5g/l, water 32.5g/l, and the balance is DMSO;

PVA selects complete alcoholysis type and low degree of polymerization type, and its alcoholysis degree is 98~100%, and its weight average molecular weight is 2.5×10 ⁴ ~3.5×10 ⁴ ; EVOH selects F101 resin from Japan Kuraray Company; catalyst Including 22wt% _NaHCO3 and 78wt% NaOH.

To sum up, the present invention has the following beneficial effects:

The application first removes impurities in the fabric through scouring, and at the same time, the scouring liquid in the scouring process preliminarily treats the fabric to open part of the structure, which provides a basis for the subsequent hydrophilic finishing. EVOH penetrates into the fabric and combines with the fabric in the catalyst and ethanol-DMSO environment. The binding force is stronger than the hydrophilic finishing effect on the market, and it has better hydrophilic effect and durability; during the hydrophilic finishing process, no The use of high-temperature padding in the prior art can also reduce the possibility of the damage to the fabric structure caused by the free substances in the high-temperature preparation solution and the decrease in the bonding force between the hydrophilic finishing agent and the fabric; Combined, this technology has not been found in the prior art, and it has been found in practice that the combination of polyester can greatly improve the hydrophilic effect.

Detailed ways

This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as needed after reading this specification, but only within the protection of the present invention are protected by patent law.

The room temperature in this application refers to 20 to 30°C.

Embodiment 1: a production method of hydrophilic polyester and its blended fabric, comprising the following steps:

(1) Scouring: prepare scouring solution at room temperature; add fabric, the bath ratio is 1:15; raise the temperature to 97°C at 1.5°C/min, keep the temperature for 30 minutes; drop to 43°C at 5.0°C/min, and change to 43°C water Wash 2~3 times;

The formula of scouring liquid is: degreaser 2.0g/l, scouring agent 1.0g/l, EDTA 0.06g/l and NaOH 3.5g/l, and the balance is water;

Degreasing agent is Tween-80;

The scouring agent includes 10wt% of octylphenol polyoxyethylene ether and 90wt% of dodecylbenzene sulfonate;

(2) Hydrophilic finishing: prepare a hydrophilic finishing solution at room temperature; add fabric, the bath ratio is 1:5; add to the microwave reactor, seal the reactor, rotate the reactor, microwave 3 times, each time the microwave is used For 60 s, the reactor was first unsealed and adjusted to normal pressure before being sealed between different times of microwave; then the pH was adjusted to neutrality with acetic acid aqueous solution, and washed with water for 2~3 times; dried at 108°C and set at 178°C ;

The formula of the hydrophilic finishing solution is: PVA 42g/l, EVOH 46g/l, catalyst 1.2g/l, ethanol 2.5g/l, water 32.5g/l, and the balance is DMSO;

PVA selects complete alcoholysis type and low degree of polymerization type, its alcoholysis degree is 98~100%, and its weight average molecular weight is 2.5×10 ⁴ ~3.5×10 ⁴ ;

EVOH selects F101 resin from Japan Kuraray Company, and its copolymerization ratio is 32% of ethylene and 68% of vinyl alcohol in molar ratio;

The catalyst included 22wt% _NaHCO3 and 78wt% NaOH.

Embodiment 2: a kind of production method of hydrophilic polyester and its blended fabric, the difference with embodiment 1 is that EVOH selects the E151 type resin of Japan Kuraray company for use, and its copolymerization ratio is ethylene 44 in molar ratio. %, vinyl alcohol 56%.

Embodiment 3: a production method of hydrophilic polyester and its blended fabric, the difference from embodiment 1 is that EVOH is self-made, and its copolymerization ratio is 20% of ethylene and 80% of vinyl alcohol in molar ratio. Q6

Embodiment 4: a production method of hydrophilic polyester and its blended fabric, the difference from embodiment 1 is that EVOH is self-made, and its copolymerization ratio is 60% of ethylene and 40% of vinyl alcohol in molar ratio. Q6

Embodiment 5: a kind of production method of hydrophilic polyester fiber and blended fabric thereof, the difference with Example 1 is that PVA selects partial alcoholysis type and middle degree of polymerization type, and its alcoholysis degree is 80～84%, And its weight average molecular weight is 12×10 ⁴ to 15×10 ⁴ .

Example 6: A production method of hydrophilic polyester and its blended fabric, the difference from Example 1 is that the catalyst is NaOH.

Example 7: A production method of hydrophilic polyester and its blended fabric, the difference from Example 1 is that the scouring agent is a commercially available scouring agent.

Example 8: A production method of hydrophilic polyester and its blended fabric, the difference from Example 1 is that the degreasing agent is sodium dodecylbenzenesulfonate.

Embodiment 9: a kind of production method of hydrophilic polyester and its blended fabric, comprising the following steps:

(1) Scouring: prepare scouring solution at room temperature; add fabric, the bath ratio is 1:14; raise the temperature to 95°C at 1.5°C/min, keep the temperature for 32min; drop to 42°C at 5.0°C/min, and change to 42°C water Wash 2~3 times;

The formula of scouring liquid is: degreaser 1.5g/l, scouring agent 1.2g/l, EDTA 0.05g/l and NaOH 3.0g/l, and the balance is water;

Degreasing agent is Tween-80;

The scouring agent includes 10wt% of octylphenol polyoxyethylene ether and 90wt% of dodecylbenzene sulfonate;

(2) Hydrophilic finishing: prepare a hydrophilic finishing solution at room temperature; add fabric, the bath ratio is 1:4; add to the microwave reactor, seal the reactor, rotate the reactor, microwave 3 times, each time the microwave is used For 58s, the reactor was first unsealed and adjusted to normal pressure before being sealed between different microwaves; then the pH was adjusted to neutrality with acetic acid aqueous solution, and washed with water for 2~3 times; dried at 105°C and set at 175°C ;

The formula of the hydrophilic finishing solution is: PVA 40g/l, EVOH 44g/l, catalyst 1.1g/l, ethanol 2.0g/l, water 30.0g/l, and the balance is DMSO;

PVA selects complete alcoholysis type and low degree of polymerization type, its alcoholysis degree is 98~100%, and its weight average molecular weight is 2.5×10 ⁴ ~3.5×10 ⁴ ;

EVOH selects F101 resin from Japan Kuraray Company, and its copolymerization ratio is 32% of ethylene and 68% of vinyl alcohol in molar ratio;

The catalyst included 22wt% _NaHCO3 and 78wt% NaOH.

Embodiment 10: a production method of hydrophilic polyester and its blended fabric, comprising the following steps:

(1) Scouring: prepare a scouring solution at room temperature; add fabric, the bath ratio is 1:16; raise the temperature to 100°C at 1.5°C/min, keep the temperature for 28 minutes; drop to 45°C at 5.0°C/min, and change to 45°C water Wash 2~3 times;

The formula of scouring liquid is: degreaser 2.5g/l, scouring agent 0.8g/l, EDTA 0.08g/l and NaOH 4.0g/l, and the balance is water;

Degreasing agent is Tween-80;

The scouring agent includes 10wt% of octylphenol polyoxyethylene ether and 90wt% of dodecylbenzene sulfonate;

(2) Hydrophilic finishing: prepare a hydrophilic finishing solution at room temperature; add fabric, the bath ratio is 1:6; add to the microwave reactor, seal the reactor, rotate the reactor, microwave 3 times, each time the microwave is used For 61 s, the reactor was first unsealed and adjusted to normal pressure before being sealed between different microwaves; then the pH was adjusted to neutrality with acetic acid aqueous solution, and washed with water for 2~3 times; dried at 110°C, and set at 180°C ;

The formula of the hydrophilic finishing liquid is: PVA 45g/l, EVOH 48g/l, catalyst 1.3g/l, ethanol 3.0g/l, water 35.0g/l, and the balance is DMSO;

PVA selects complete alcoholysis type and low degree of polymerization type, its alcoholysis degree is 98~100%, and its weight average molecular weight is 2.5×10 ⁴ ~3.5×10 ⁴ ;

EVOH selects F101 resin from Japan Kuraray Company, and its copolymerization ratio is 32% of ethylene and 68% of vinyl alcohol in molar ratio;

The catalyst included 22wt% _NaHCO3 and 78wt% NaOH.

performance characterization

1. Hydrophilic finishing effect test

Test content: The surface energy is used as an index to judge the effect of hydrophilic finishing. The test is carried out with reference to the known literature (P247[47], Chen Mingzhen and Lu Bitai), Vol. 5 parallel experiments were carried out, and the average value was taken.

Test sample: take the polyester raw material in this application as the blank control, take the commercially available polyester that has been hydrophilically finished as the reference sample 1, and take the products prepared in Examples 1-10 as the test sample (the raw materials are all polyester raw materials).

Test results: as shown in Table 1. Table 1 shows: Compared with the blank control, the surface energy and surface energy of the hydrophilic part of the control 1 and the examples 1-10 are higher and the surface energy of the hydrophobic part is lower, and the examples 1-10 are obviously better than the commercially available ones. Reference 1 shows that the hydrophilic polyester prepared by the production method of the present application has better hydrophilic finishing effect and better hydrophilicity.

Table 1 Hydrophilic finishing effect test

2. Persistence test

Test content: The surface energy of the hydrophilic part is used as an index to judge the effect of hydrophilic finishing. The test is carried out with reference to the known literature (P247[47], Chen Mingzhen and Lu Bitai), Vol. 5 parallel experiments were carried out, and the average value was taken.

Test sample: The commercially available polyester that has been hydrophilically finished is used as the reference product, and the products prepared in Examples 1-10 are used as the test product (the raw materials are all polyester raw materials). The samples were washed several times with 25°C water, 37°C clean water, 25°C soap solution, and 37°C soap solution, respectively, and then tested. Preparation of soap solution: take AATCC 1993 standard soaping powder WOB (without whitening agent), and prepare 0.5wt% soap solution with water.

Test results: as shown in Tables 2 and 3. Tables 2 and 3 show that: compared with the reference product, the surface energy of the clean water part of Examples 1-10 decreased slightly after being washed for many times, indicating that the hydrophilic effect of a hydrophilic polyester of the present application is durable; Examples 1, 2 and 9, 10 are the best.

Table 2 Persistence test in clean water (surface energy of hydrophilic part, dyn/cm)

Table 3 Persistence test in soap solution (surface energy of hydrophilic part, dyn/cm)

Claims (3)

1. a production method of hydrophilic polyester and blended fabric thereof, is characterized in that, comprises the following steps: (1) Scouring: prepare a scouring solution at room temperature; add fabric, and the bath ratio is 1:14-16; raise the temperature to 95-100°C at 1.5°C/min, keep the temperature for 28-32min; drop to 42-42°C at 5.0°C/min 45°C, change to 42-45°C water and wash 2-3 times; The formula of scouring liquid is: degreaser 1.5～2.5g/l, scouring agent 0.8～1.2g/l, chelating agent 0.05～0.08g/l and alkali agent 3.0～4.0g/l, the balance is water; The degreasing agent is Tween-80, and the scouring agent comprises 8-12wt% of octylphenol polyoxyethylene ether and 88-92wt% of dodecylbenzene sulfonate; (2) Hydrophilic finishing: prepare a hydrophilic finishing solution at room temperature; add fabric, and the bath ratio is 1:4 to 6; add it to the microwave reactor, seal the reactor, rotate the reactor, microwave 3 times, each time The microwave duration was 58-61 s, and the reactor was first unsealed and adjusted to normal pressure before being sealed between different microwave times; then the pH was adjusted to neutrality with acetic acid aqueous solution, and washed with water for 2-3 times; drying at 105-110°C Dry, set at 175～180℃; The formula of the hydrophilic finishing liquid is: PVA 40～45g/l, EVOH 44～48g/l, catalyst 1.1～1.3g/l, ethanol 2.0～3.0g/l, water 30.0～35.0g/l, the balance is DMSO ; The catalyst comprises 20-25wt% _NaHCO3 and 75-80wt% NaOH; In step (2), the PVA selects complete alcoholysis type and low polymerization degree type, and its alcoholysis degree is 98-100%, and its weight-average molecular weight is 2.5×10 ⁴ ～3.5×10 ⁴ ; In step (2), in terms of molar ratio, the copolymerization ratio of EVOH is 32-44% of ethylene and 56-68% of vinyl alcohol. 2. the production method of a kind of hydrophilic polyester fiber and its blended fabric according to claim 1, is characterized in that, in step (2), described EVOH selects the F101 type resin of Japan Kuraray Company for use. 3. the production method of a kind of hydrophilic polyester fiber and its blended fabric according to claim 1, is characterized in that, comprises the following steps: (1) Scouring: prepare a scouring solution at room temperature; add fabric, and the bath ratio is 1:15; raise the temperature to 97°C at 1.5°C/min, keep warm for 30 minutes; drop to 43°C at 5.0°C/min, and change to 43°C water Wash 2 to 3 times with water; The formula of scouring liquid is: degreaser 2.0g/l, scouring agent 1.0g/l, EDTA 0.06g/l and NaOH 3.5g/l, and the balance is water; Degreasing agent is Tween-80; The scouring agent includes 10wt% of octylphenol polyoxyethylene ether and 90wt% of dodecylbenzene sulfonate; (2) Hydrophilic finishing: prepare a hydrophilic finishing solution at room temperature; add fabric, the bath ratio is 1:5; add to the microwave reactor, seal the reactor, rotate the reactor, microwave 3 times, each time the microwave is used For 60 s, the reactor was first unsealed and adjusted to normal pressure before being sealed between different microwave times; then the pH was adjusted to neutrality with acetic acid aqueous solution, and washed with water for 2 to 3 times; dried at 108°C, set at 178°C ; The formula of the hydrophilic finishing solution is: PVA 42g/l, EVOH 46g/l, catalyst 1.2g/l, ethanol 2.5g/l, water 32.5g/l, and the balance is DMSO; PVA selects complete alcoholysis type and low degree of polymerization type, its alcoholysis degree is 98～100%, and its weight average molecular weight is 2.5×104～3.5× ^{104 ;} EVOH selects F101 type resin of Japan Kuraray Company; catalyst 22 wt% _NaHCO3 and 78 wt% NaOH were included.