阅读说明：本技术 膜丝保湿组合物、其制备方法和应用 (Membrane silk moisturizing composition, and preparation method and application thereof ) 是由 龚烨霞 陈承 王强 倪澄峰 于 2019-02-27 设计创作，主要内容包括：本发明公开了一种膜丝保湿组合物、其制备方法和应用。所述的膜丝保湿组合物包括如下质量百分比含量的组分：1～20％钠盐保湿剂、0.1～0.5％亚硫酸氢钠、1～5％表面活性剂和余量的水。本发明膜丝保湿组合物的保湿效果好,同时具有抑菌作用,应用在膜丝生产中具有冲洗时间短、生产效率高、生产成本低的优势,可以循环回收利用,绿色环保。(The invention discloses a film silk moisturizing composition, and a preparation method and application thereof. The membrane silk moisturizing composition comprises the following components in percentage by mass: 1-20% of sodium salt humectant, 0.1-0.5% of sodium bisulfite, 1-5% of surfactant and the balance of water. The membrane silk moisturizing composition disclosed by the invention is good in moisturizing effect, has a bacteriostatic effect, has the advantages of short washing time, high production efficiency and low production cost when being applied to membrane silk production, can be recycled, and is green and environment-friendly.)

1. The membrane silk moisturizing composition is characterized by comprising the following components in percentage by mass:

the sodium salt humectant is one or more of sodium hyaluronate, sodium acetate and sodium lactate.

2. The film filament moisturizing composition of claim 1, wherein the sodium salt moisturizer is a combination of sodium acetate and sodium lactate, a combination of sodium hyaluronate and sodium acetate, sodium hyaluronate, sodium acetate, or sodium lactate;

and/or the surfactant is one or more of an anionic surfactant, a cationic surfactant, a zwitterionic surfactant and a nonionic surfactant.

3. The membrane silk moisturizing composition of claim 1 or 2, wherein the surfactant is one or more of dodecyl dimethyl betaine, sodium lauryl sulfate, octadecyl trimethyl ammonium chloride, and cocamidopropyl betaine.

4. The membrane silk moisturizing composition as claimed in claim 1 or 2, wherein the membrane silk moisturizing composition is composed of the following components in percentage by mass:

5. the membrane silk moisturizing composition of claim 1 or 2, wherein the sodium salt moisturizing agent is present in an amount of 1 to 12% by weight; the mass percentage content of the sodium salt humectant is preferably 5-12%;

and/or the sodium bisulfite accounts for 0.1-0.4% by mass;

and/or the surfactant accounts for 2-5% by mass.

6. The membrane silk moisturizing composition of claim 1 or 2, wherein the membrane silk moisturizing composition comprises the following components in percentage by mass:

or the membrane silk moisturizing composition comprises the following components in percentage by mass:

7. the membrane silk moisturizing composition as claimed in claim 1 or 2, wherein the membrane silk moisturizing composition is composed of the following components in percentage by mass: 5% sodium salt humectant, 0.2% sodium bisulfite, 3% surfactant and 91.8% water;

or the membrane silk moisturizing composition comprises the following components in percentage by mass: 10% sodium salt humectant, 0.3% sodium bisulfite, 2% surfactant and 87.7% water;

or the membrane silk moisturizing composition comprises the following components in percentage by mass: 8% sodium salt humectant, 0.1% sodium bisulfite, 3% surfactant and 88.9% water;

or the membrane silk moisturizing composition comprises the following components in percentage by mass: 8% sodium salt humectant, 0.2% sodium bisulfite, 3% surfactant and 88.8% water;

or the membrane silk moisturizing composition comprises the following components in percentage by mass: 11% sodium salt humectant, 0.3% sodium bisulfite, 3% surfactant and 85.7% water;

or the membrane silk moisturizing composition comprises the following components in percentage by mass: 10% sodium salt humectant, 0.4% sodium bisulfite, 4% surfactant and 85.6% water;

or the membrane silk moisturizing composition comprises the following components in percentage by mass: 12% sodium salt humectant, 0.3% sodium bisulfite, 3% surfactant and 84.7% water;

or the membrane silk moisturizing composition comprises the following components in percentage by mass: 8% sodium salt humectant, 0.4% sodium bisulfite, 4% surfactant and 87.6% water.

8. A preparation method of a film silk moisturizing composition is characterized by comprising the following steps: mixing the components of the membrane filament moisturizing composition according to any one of claims 1 to 7.

9. Use of the film yarn moisturizing composition as claimed in any one of claims 1 to 7 in film yarn production.

10. The use according to claim 9, characterized in that said use comprises the steps of: soaking the membrane filaments in the membrane filament moisturizing composition;

and/or the material of the filter element of the membrane silk comprises one or more of polyvinylidene fluoride, polyvinyl chloride, polysulfone and polyacrylonitrile.

Technical Field

The invention relates to a film silk moisturizing composition, a preparation method and application thereof.

Background

In the production process of the hollow fiber membrane module, wet membrane filaments need to be dried and then subjected to membrane module casting so as to ensure effective curing of glue. The hollow fiber membrane which is not treated by the humectant is easy to tighten and contract in the drying process, and the flux of the membrane component is reduced or even lost due to the hydrophobicity of the organic polymer material. In order to solve the above problems, it is usually necessary to add a humectant before the membrane module is cast to maintain the flux of the membrane module.

Glycerol is the most common humectant at present, and can ensure that membrane filaments still keep good flux after being dried, but glycerol has viscosity, is easy to adhere membrane filaments together, is easy to absorb water, deteriorates and infects bacteria, is difficult to wash clean, and generally needs to be washed by pure water for about one week to ensure that organic matters are dissolved out within a required range. This seriously affects the production schedule and the consumption of hydroelectric energy is large.

Disclosure of Invention

Aiming at the defects of difficult flushing and poor anti-burning performance of the membrane silk moisturizing composition in the prior art, the invention provides the membrane silk moisturizing composition, and the preparation method and the application thereof.

The invention solves the technical problems through the following technical scheme.

The invention provides a membrane silk moisturizing composition, which comprises the following components in percentage by mass:

the sodium salt humectant is one or more of sodium hyaluronate, sodium acetate and sodium lactate.

In the present invention, preferably, the sodium salt humectant is a composition of sodium acetate and sodium lactate, a composition of sodium hyaluronate and sodium acetate, sodium hyaluronate, sodium acetate or sodium lactate.

In the present invention, the surfactant may be a surfactant conventional in the art, and preferably, the surfactant is one or more of an anionic surfactant (e.g., sodium lauryl sulfate), a cationic surfactant (e.g., octadecyl trimethyl ammonium chloride), a zwitterionic surfactant (e.g., dodecyl dimethyl betaine, cocamidopropyl betaine), and a nonionic surfactant; more preferably, the surfactant is one or more of dodecyl dimethyl betaine, sodium dodecyl sulfate, octadecyl trimethyl ammonium chloride and cocamidopropyl betaine. According to the invention, by adding the surfactant, the moisturizing effect of the membrane yarn is improved, and the wettability of the membrane yarn moisturizing composition on the surface of the membrane yarn is improved, namely the easiness in cleaning is improved.

In the invention, preferably, the membrane silk moisturizing composition consists of the following components in percentage by mass: 1-20% of a sodium salt humectant (such as a composition of sodium acetate and sodium lactate, a composition of sodium hyaluronate and sodium acetate, sodium hyaluronate, sodium acetate or sodium lactate), 0.1-0.5% of sodium bisulfite, 1-5% of a surfactant (such as dodecyl dimethyl betaine, sodium dodecyl sulfate, octadecyl trimethyl ammonium chloride or cocamidopropyl betaine), and the balance of water.

In the membrane silk moisturizing composition, the content of the sodium salt moisturizing agent is preferably 1-12% by mass; more preferably, the sodium salt humectant is 5-12% (e.g., 5%, 8%, 10%, 11% or 12%) by mass.

In the membrane silk moisturizing composition, the sodium bisulfite is preferably contained in an amount of 0.1 to 0.4% (e.g., 0.1%, 0.2%, 0.3%, or 0.4%) by mass.

In the membrane silk moisturizing composition, the surfactant is preferably contained in an amount of 2 to 5% by mass (e.g., 2%, 3%, or 4%).

In the invention, preferably, the membrane silk moisturizing composition comprises the following components in percentage by mass: 1-12% of a sodium salt humectant (such as a composition of sodium acetate and sodium lactate, a composition of sodium hyaluronate and sodium acetate, sodium hyaluronate, sodium acetate or sodium lactate), 0.1-0.5% of sodium bisulfite, 1-5% of a surfactant (such as dodecyl dimethyl betaine, sodium dodecyl sulfate, octadecyl trimethyl ammonium chloride or cocamidopropyl betaine), and the balance of water.

In the invention, preferably, the membrane silk moisturizing composition comprises the following components in percentage by mass: 5-12% of a sodium salt humectant (such as a composition of sodium acetate and sodium lactate, a composition of sodium hyaluronate and sodium acetate, sodium hyaluronate, sodium acetate or sodium lactate), 0.1-0.4% of sodium bisulfite, 2-5% of a surfactant (such as dodecyl dimethyl betaine, sodium dodecyl sulfate, octadecyl trimethyl ammonium chloride or cocamidopropyl betaine), and the balance of water.

As a preferable scheme of the invention, the membrane silk moisturizing composition comprises the following components in percentage by mass: 5% sodium salt humectant (e.g. sodium acetate), 0.2% sodium bisulfite, 3% surfactant (e.g. dodecyl dimethyl betaine) and 91.8% water.

As a preferable scheme of the invention, the membrane silk moisturizing composition comprises the following components in percentage by mass: 10% sodium salt humectant (e.g. sodium hyaluronate), 0.3% sodium bisulfite, 2% surfactant (e.g. sodium lauryl sulfate) and 87.7% water.

As a preferable scheme of the invention, the membrane silk moisturizing composition comprises the following components in percentage by mass: 8% sodium salt humectant (e.g. sodium lactate), 0.1% sodium bisulfite, 3% surfactant (e.g. octadecyl trimethyl ammonium chloride) and 88.9% water.

As a preferable scheme of the invention, the membrane silk moisturizing composition comprises the following components in percentage by mass: 8% sodium salt humectant (e.g. 4% sodium lactate and 4% sodium acetate), 0.2% sodium bisulfite, 3% surfactant (e.g. cocamidopropyl betaine) and 88.8% water.

As a preferable scheme of the invention, the membrane silk moisturizing composition comprises the following components in percentage by mass: 11% sodium salt humectant (e.g. sodium lactate), 0.3% sodium bisulfite, 3% surfactant (e.g. sodium lauryl sulfate) and 85.7% water.

As a preferable scheme of the invention, the membrane silk moisturizing composition comprises the following components in percentage by mass: 10% sodium salt moisturizer (e.g. 5% sodium lactate and 5% sodium hyaluronate), 0.4% sodium bisulfite, 4% surfactant (e.g. octadecyl trimethyl ammonium chloride) and 85.6% water.

As a preferable scheme of the invention, the membrane silk moisturizing composition comprises the following components in percentage by mass: 12% sodium salt humectant (e.g. 6% sodium lactate and 6% sodium acetate), 0.3% sodium bisulfite, 3% surfactant (e.g. cocamidopropyl betaine) and 84.7% water.

As a preferable scheme of the invention, the membrane silk moisturizing composition comprises the following components in percentage by mass: 8% sodium salt humectant (e.g. 4% sodium hyaluronate and 4% sodium acetate), 0.4% sodium bisulfite, 4% surfactant (e.g. cocamidopropyl betaine) and 87.6% water.

The invention also provides a preparation method of the membrane silk moisturizing composition, which comprises the following steps: mixing the components of the membrane silk moisturizing composition.

In the preparation method, the components of the membrane silk moisturizing composition are preferably mixed at 30-40 ℃.

In the present invention, preferably, the preparation method comprises the following steps: (1) heating part of water to 30-40 ℃, adding the sodium salt humectant and the surfactant, and mixing;

(2) adding the sodium bisulfite after ultrasonic dispersion into the mixed solution obtained in the step (1), adding the rest water, and mixing;

wherein, the mass of the water used in the step (1) accounts for 30-40% of the total mass of the water used in the steps (1) and (2), and the mass is determined according to the dissolution condition of the raw materials.

The invention also provides application of the membrane silk moisturizing composition in membrane silk production.

In the application, the membrane yarn may be a membrane yarn conventional in the art, and preferably, the material of the filter element of the membrane yarn includes one or more of polyvinylidene fluoride (PVDF), polyvinyl chloride (PVC), polysulfone and Polyacrylonitrile (PAN).

In the application, preferably, the method comprises the following steps: and soaking the membrane filaments in the membrane filament moisturizing composition.

In the application, preferably, the soaking time is 12 hours.

In the application, the membrane filaments are soaked by the membrane filament moisturizing composition and then taken out, so that conventional drying treatment can be carried out, and then a membrane component can be further manufactured.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The reagents and starting materials used in the present invention are commercially available.

The positive progress effects of the invention are as follows:

1. the membrane silk treated by the membrane silk moisturizing composition is used for manufacturing the membrane component, after the membrane component is used, the flushing time of the membrane component is greatly shortened on the premise of ensuring the flux, compared with the conventional humectant glycerin, the flushing time required for flushing the membrane component until the dissolved COD of organic matters is less than or equal to 2.0 is reduced from about 1 week to 24 hours, the production efficiency is greatly improved, and the production cost is reduced.

2. The film silk moisturizing composition disclosed by the invention has the advantages that the moisturizing effect is improved by adding the surfactant, the wettability of the film silk moisturizing composition on the surface of the film silk is improved, and the film silk moisturizing composition is washed more quickly.

3. The addition of the sodium bisulfite in the membrane silk moisturizing composition not only improves the oxidation resistance of the membrane silk moisturizing composition, but also plays a role in bacteriostasis.

4. The glycerin is used as the humectant to achieve the moisturizing effect, the concentration content is high, the required moisturizing effect can be achieved by using the sodium salt humectant with low concentration, and the humectant is more green and environment-friendly.

5. The film silk moisturizing composition can be automatically supplemented by monitoring the concentration in the using process, so that the recycling and the reutilization are realized, and the environment is protected.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention. The experimental methods without specifying specific conditions in the following examples were selected according to the conventional methods and conditions, or according to the commercial instructions.