阅读说明：本技术 高吸水树脂预处理用处理液及高吸水树脂预处理方法 (Treatment fluid for pretreatment of super absorbent resin and pretreatment method of super absorbent resin ) 是由 陆帅丰 唐齐生 于 2019-11-19 设计创作，主要内容包括：本申请公开了一种高吸水树脂预处理用处理液及高吸水树脂预处理方法。高吸水树脂预处理用处理液,以重量份数计,包括以下组分：去离子水：80～100份；非离子表面活性剂OP-10：3～8份；酒精：30～50份；苯骈三氮唑：10～20份。通过对高吸水树脂粉末进行预处理,在不改变高吸水树脂的吸水性能前提下,通过增加苯骈三氮唑,来保护铜,起到减少铜被高吸水树脂制成的阻水带腐蚀的可能性。(The application discloses a treatment fluid for pretreatment of super absorbent resin and a pretreatment method of super absorbent resin. The treating fluid for the pretreatment of the super absorbent resin comprises the following components in parts by weight: deionized water: 80-100 parts of a solvent; nonionic surfactant OP-10: 3-8 parts; alcohol: 30-50 parts of a solvent; benzotriazole: 10-20 parts. By pretreating the super absorbent resin powder, the benzotriazole is added to protect copper on the premise of not changing the water absorption performance of the super absorbent resin, so that the possibility of corrosion of the copper by a water-blocking tape made of the super absorbent resin is reduced.)

1. The treatment fluid for the pretreatment of the super absorbent resin is characterized by comprising the following components in parts by weight:

deionized water: 80-100 parts of a solvent;

nonionic surfactant OP-10: 3-8 parts;

alcohol: 30-50 parts of a solvent;

benzotriazole: 10-20 parts.

2. The treatment liquid for pretreatment of super absorbent resin according to claim 1, wherein the deionized water is 100 parts.

3. The treatment liquid for pretreatment of super absorbent resin according to claim 1, wherein the amount of the nonionic surfactant OP-10 is 5 parts.

4. The treatment liquid for pretreatment of super absorbent resin according to claim 1, wherein the alcohol is 40 parts.

5. The treating fluid for pretreating a superabsorbent resin of claim 1, wherein the benzotriazole is 15 parts.

6. A method for pretreating super absorbent resin is characterized by comprising the following steps:

directly spraying 10 parts by weight of the treating fluid for the pretreatment of the super absorbent resin as claimed in any one of claims 1 to 5 on the surface of 100 parts by weight of super absorbent resin powder in a spraying manner;

drying the super absorbent resin powder, wherein the drying temperature is 120 ℃, and the drying time is 4 hours;

and screening the dried super absorbent resin powder by a 100-mesh vibrating screen.

Technical Field

The disclosure relates generally to the field of water-blocking tapes, and particularly relates to a treatment fluid for pretreatment of super absorbent resin and a pretreatment method of super absorbent resin.

Background

The insulating water-blocking tape and the semi-conductive water-blocking tape for the cable at present have the structural form that base fabric adopts impregnated non-woven fabric or spun-bonded hot-rolled non-woven fabric, and the base fabric mainly plays a supporting role to meet the strength requirement when the water-blocking tape is used; the middle layer is made of super absorbent resin and mainly plays a role in water resistance; the cover cloth is hot-rolled non-woven fabric, mainly plays a role of a sucrose cover and prevents the water-blocking tape from falling powder in the production and use processes.

The main component of the super absorbent resin in the structure is a copolymer of polyacrylic acid with low crosslinking degree and polyacrylic acid sodium salt. Because the structure contains certain carboxyl, the pH value of the super absorbent resin is generally acidic about 6.5-7, and the acidity has certain corrosion effect on copper in the cable, so that the copper in the cable is oxidized in the using process to influence the service performance and the service life of the cable.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a treatment liquid for pretreatment of a super absorbent resin and a method for pretreatment of a super absorbent resin, which can reduce corrosion of the super absorbent resin to copper.

In a first aspect, the treatment fluid for the pretreatment of the super absorbent resin is characterized by comprising the following components in parts by weight:

deionized water: 80-100 parts of a solvent;

nonionic surfactant OP-10: 3-8 parts;

alcohol: 30-50 parts of a solvent;

benzotriazole: 10-20 parts.

In a second aspect, a method for pretreating super absorbent resin is characterized by comprising the following steps:

in parts by weight, directly spraying 10 parts of treatment fluid for pretreatment of super absorbent resin on the surface of 100 parts of super absorbent resin powder in a spraying manner;

drying the super absorbent resin powder, wherein the drying temperature is 120 ℃, and the drying time is 4 hours;

and screening the dried super absorbent resin powder by a 100-mesh vibrating screen.

Has the advantages that: according to the treatment liquid for the pretreatment of the super absorbent resin and the pretreatment method of the super absorbent resin, disclosed by the invention, the super absorbent resin powder is pretreated, and under the premise of not changing the water absorption performance of the super absorbent resin, the benzotriazole is added to protect copper, so that the possibility of corrosion of the copper by a water-blocking tape made of the super absorbent resin is reduced.

Detailed Description

The present application will be described in further detail with reference to examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

One embodiment of the invention is that the treatment fluid for the pretreatment of the super absorbent resin comprises the following components in parts by weight:

deionized water: 80-100 parts of a solvent;

nonionic surfactant OP-10: 3-8 parts;

alcohol: 30-50 parts of a solvent;

benzotriazole: 10-20 parts.

In the embodiment of the invention, because the surface of the super absorbent resin has certain acidity, in order to prevent the copper core of the cable from being corroded by the acidity, the surface of the super absorbent resin needs to be pretreated. The pretreatment does not change the original water absorption performance of the super absorbent resin, and only plays a role in preventing the acidity of the super absorbent resin from corroding copper. Deionized water acts as a solvent. The nonionic surfactant OP-10 plays a role in preventing agglomeration of the super absorbent resin powder during the treatment. The alcohol plays a role in preventing the agglomeration of the super absorbent resin powder in the treatment process. The benzotriazole has the function of preventing copper corrosion. The proportion of each component of the treatment fluid can be up and down floated, the water content is too large, the nonionic surfactant is too small, the alcohol is too little, and the phenomenon of powder agglomeration in the process of treating the super absorbent resin is increased. The benzotriazole does not play a role in corrosion prevention when being too little, and the dosage of the benzotriazole reaches a certain degree and then is increased, so that the improvement of corrosion prevention is not obvious.

Further, deionized water is 100 parts.

Further, 5 parts of a nonionic surfactant OP-10.

Further, 40 parts of alcohol.

Further, 15 parts of benzotriazole.

Another embodiment of the present invention is a method for pretreating super absorbent resin, comprising the steps of:

in parts by weight, directly spraying 10 parts of treatment fluid for pretreatment of super absorbent resin on the surface of 100 parts of super absorbent resin powder in a spraying manner;

drying the super absorbent resin powder, wherein the drying temperature is 120 ℃, and the drying time is 4 hours;

and sieving the dried super absorbent resin powder by a 100-mesh vibrating screen.

In the embodiment of the invention, the surface treatment of the super absorbent resin powder is carried out in a high-speed stirring kettle, and the super absorbent resin powder is sprayed with the surface treatment liquid under high-speed stirring, so that the whole surface of the super absorbent resin powder is uniformly sprayed. After the treatment liquid is sprayed, the super absorbent resin powder does not have a small amount of agglomeration, coarse particles are screened out by a 100-mesh screen, agglomerated particles can be screened out, and therefore the quality of the water-blocking tape prepared from the super absorbent resin is guaranteed. Because the surface of the super absorbent resin has certain acidity, in order to prevent the corrosion of the acidity to the copper core of the cable, the surface of the super absorbent resin needs to be pretreated to a certain degree. The pretreatment does not change the original water absorption performance of the super absorbent resin, and only plays a role in preventing the acidity of the super absorbent resin from corroding copper. Deionized water acts as a solvent. The nonionic surfactant OP-10 plays a role in preventing agglomeration of the super absorbent resin powder during the treatment. The alcohol plays a role in preventing the agglomeration of the super absorbent resin powder in the treatment process. The benzotriazole has the function of preventing copper corrosion.

The water-blocking tape produced by the super absorbent resin and obtained by pretreatment by the pretreatment method disclosed by the invention and the water-blocking tape produced by the non-pretreated super absorbent resin are subjected to a copper oxidation corrosion test, and the specific test method comprises the following steps:

1, after the surfaces of the copper wires are cleaned, winding the two water blocking tapes on the two copper wires respectively.

2, taking two beakers, respectively adding 200ml of deionized water into the two 500ml beakers, respectively placing the two copper wires wound with the water-blocking tape into the two beakers, and sealing the mouths of the two beakers by using plastic films.

And 3, placing the two sealed beakers into a constant-temperature oven at 90 ℃ for constant temperature for 120 hours.

4,120 hours later, the two beakers were removed and the copper wire oxidation was observed in the two beakers.

5, the copper wire wound by the common water-blocking tape is obviously oxidized and turns green, the aqueous solution is also obviously green, the copper wire wound by the copper oxidation resistant water-blocking tape is not obviously changed, and the aqueous solution is colorless and transparent.

As can be seen from the above tests, the corrosion of the water-blocking tape produced by the super absorbent resin obtained by the pretreatment method disclosed by the invention on copper is obviously reduced.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.