阅读说明：本技术 一种软质纳米颗粒稳定的硅油乳液及其制备方法 (Silicone oil emulsion with stable soft nanoparticles and preparation method thereof ) 是由 沈军炎 杨雷 于 2021-09-03 设计创作，主要内容包括：本发明属于纺织助剂技术领域,具体涉及一种软质纳米颗粒稳定的硅油乳液,其质量配比如下：氨基硅油20-30份、乳化剂2-8份、软质纳米颗粒乳液3-32份、pH调节剂0.8-1.5份、去离子水50-60份,并提供了具体的制备方法。本发明解决解决传统硅油乳液稳定性差和纺织品整理效果差的问题,具备优良的乳液稳定性,纤维上附着性好,能够有效地提高纺织品的透气性以及柔软性,由此提高了其实用性以及舒适性；同时其具有成本低廉、工艺简单的特点。(The invention belongs to the technical field of textile auxiliary agents, and particularly relates to a silicone oil emulsion with stable soft nanoparticles, which comprises the following components in percentage by mass: 20-30 parts of amino silicone oil, 2-8 parts of emulsifier, 3-32 parts of soft nano-particle emulsion, 0.8-1.5 parts of pH regulator and 50-60 parts of deionized water, and provides a specific preparation method. The invention solves the problems of poor stability and poor finishing effect of the traditional silicone oil emulsion, has excellent emulsion stability and good adhesiveness on the fiber, and can effectively improve the air permeability and the flexibility of the textile, thereby improving the practicability and the comfort of the textile; meanwhile, the method has the characteristics of low cost and simple process.)

1. A silicone oil emulsion stabilized by soft nanoparticles is characterized in that: the mass ratio is as follows:

20-30 parts of amino silicone oil, 2-8 parts of emulsifier, 3-32 parts of soft nano-particle emulsion, 0.8-1.5 parts of pH regulator and 50-60 parts of deionized water.

2. The soft nanoparticle stabilized silicone oil emulsion of claim 1, characterized by: the emulsifier is one or more of polyoxyethylene ether laurate, isomeric tridecanol ethoxylate and fatty acid methyl ester ethoxylate.

3. The soft nanoparticle stabilized silicone oil emulsion of claim 1, characterized by: the soft nano-particle emulsion is at least one of polybutyl acrylate emulsion (PBA,150nm), polypropylene acrylate emulsion (PPA,120nm) and poly (isooctyl acrylate) emulsion (PEHA,170nm), and the solid content of the three emulsions is 30%.

4. The soft nanoparticle stabilized silicone oil emulsion of claim 1, characterized by: the pH regulator adopts acetic acid.

5. The soft nanoparticle stabilized silicone oil emulsion of claim 1, characterized by: the preparation method of the silicone oil emulsion comprises the following steps:

mixing amino silicone oil, a pH regulator and deionized water, adding the mixture into a reaction vessel, stirring at the rotating speed of 800-1500rpm for 10-30min at room temperature, adding the soft nanoparticle emulsion and the emulsifier while stirring, and continuously stirring for 30-90min to obtain the milky and uniformly dispersed silicone oil emulsion.

6. Use of a soft nanoparticle stabilised silicone oil emulsion according to any one of claims 1 to 5 in textile finishing.

Technical Field

The invention belongs to the technical field of textile auxiliary agents, and particularly relates to a silicone oil emulsion with stable soft nanoparticles and a preparation method thereof.

Background

The silicone oil has the characteristics of soft chain segment, small surface tension and the like, has obvious effect of improving the fabric softness, and is widely applied to fabric softness and simulation finishing. The fabric after-finishing agent commonly used in the market at present is mainly amino silicone oil emulsion, but the storage stability of the fabric after-finishing agent is poor, the fabric after-finishing agent is generally easy to demulsify and yellow, and the finished fabric is hydrophobic and non-sweat-absorbent, so that the comfort and the appearance of the fabric are greatly influenced. Traditional silicone oil emulsions are stabilized primarily by a combination of electrostatic stabilization, reduction of interfacial tension, and steric stabilization with surfactants or soluble macromolecules. The conventional emulsifier (such as surfactant and the like) can generate dynamic exchange on an oil-water interface, so that the silicone oil is difficult to emulsify and uniformly disperse in the system. Thus, conventional silicone oil emulsions are thermodynamically unstable and break over time due to coalescence, flocculation and ostwald ripening, resulting in failure of the emulsion. In addition, with the pursuit of consumers for comfortable life style and the rapid development of the functional textile market, the development of novel silicone oil emulsion products to replace the traditional silicone oil products becomes more and more urgent, and the design and synthesis of various novel silicone oil emulsion products are urgently needed to meet the requirements of people on softness, whiteness, hydrophilicity and wettability of fabrics.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a silicone oil emulsion with stable soft nanoparticles, which solves the problems of poor stability and poor finishing effect of the traditional silicone oil emulsion, has excellent emulsion stability and good adhesiveness on fibers, and can effectively improve the air permeability and the flexibility of textiles, thereby improving the practicability and the comfort of the textiles; meanwhile, the method has the characteristics of low cost and simple process.

In order to achieve the technical purpose, the technical scheme of the invention is as follows:

the silicone oil emulsion with stable soft nano particles comprises the following components in percentage by mass:

20-30 parts of amino silicone oil, 2-8 parts of emulsifier, 3-32 parts of soft nano-particle emulsion, 0.8-1.5 parts of pH regulator and 50-60 parts of deionized water.

The emulsifier is one or more of polyoxyethylene ether laurate, isomeric tridecanol ethoxylate and fatty acid methyl ester ethoxylate.

The soft nano-particle emulsion is at least one of polybutyl acrylate emulsion (PBA,150nm), polypropylene acrylate emulsion (PPA,120nm) and poly (isooctyl acrylate) emulsion (PEHA,170nm), and the solid content of the three emulsions is 30%.

The pH regulator adopts acetic acid.

The preparation method of the silicone oil emulsion comprises the following steps:

mixing amino silicone oil, a pH regulator and deionized water, adding the mixture into a reaction vessel, stirring at the rotating speed of 800-1500rpm for 10-30min at room temperature, adding the soft nanoparticle emulsion and the emulsifier while stirring, and continuously stirring for 30-90min to obtain the milky and uniformly dispersed silicone oil emulsion. The raw materials can be adjusted in sequence according to requirements in the stirring process.

The application of the silicone oil emulsion with stable soft nano particles in textile finishing.

From the above description, it can be seen that the present invention has the following advantages:

1. the invention solves the problems of poor stability and poor finishing effect of the traditional silicone oil emulsion, has excellent emulsion stability and good adhesiveness on the fiber, and can effectively improve the air permeability and the flexibility of the textile, thereby improving the practicability and the comfort of the textile; meanwhile, the method has the characteristics of low cost and simple process.

2. The soft particles can be stretched and deformed at an oil-water interface, so that the interface adsorption energy and the particle coverage area are increased, and the emulsion dispersion stability is improved more obviously, so that the soft particles have better emulsifying property on silicone oil, the formed emulsion has better stability, and the soft particles have small influence on the hand feeling, the softness and the like of fabrics.

3. The silicone oil emulsion with stable soft nanoparticles forms a physical barrier through the soft nanoparticles adsorbed on an oil-water interface, and prevents the oil-water interaction and the liquid drop contact of the interface through volume exclusion, and the behavior of the particles adsorbed on the interface is irreversible.

4. The emulsion finishing agent is applied to the post-treatment of textiles, so that the textiles finished by the emulsion can keep excellent air permeability and flexibility, and the requirement of modern people on the comfort of the textiles is met. The emulsifying process provided by the invention is simple, the process is easy to implement and control, the popularization and the production are facilitated, the designability is strong, the process adjustment is convenient, and the obtained material has wide application prospects in the fields of textiles, cosmetics and the like.

Drawings

FIG. 1 is the emulsion properties of soft nanoparticle stabilized silicone oil emulsions prepared in comparative example 1, examples 2 and 3;

FIG. 2 shows the appearance of the fabric finished by application examples 1-3 under a scanning electron microscope.

Detailed Description

An embodiment of the present invention is described in detail with reference to fig. 1 to 2, but the present invention is not limited in any way by the claims.

A preparation method of silicone oil emulsion with stable soft nanoparticles comprises the following steps:

(1) putting 26 parts by weight of amino silicone oil and 2 parts by weight of emulsifier polyoxyethylene ether laurate into a reaction container for high-speed shearing emulsification, wherein the stirring time is 90min, the rotating speed is 900r/min, and the stirring temperature is room temperature;

(2) adding acetic acid into the system obtained in the step (1) to adjust the pH value to 5.0-7.0;

(3) and (3) slowly adding 18 parts by weight of poly (isooctyl acrylate) emulsion (PEHA,170nm) into the system obtained in the step (2), and continuously stirring for 60-90min to obtain the silicone oil emulsion with stable soft nanoparticles.

Example 2

A preparation method of silicone oil emulsion with stable soft nanoparticles comprises the following steps:

(1) putting 26 parts by weight of amino silicone oil, 2 parts by weight of an emulsifier isotridecanol ethoxylate and 4 parts by weight of a polybutyl acrylate emulsion (PBA,150nm) into a reaction vessel for high-speed shearing emulsification, wherein the stirring time is 30min, the rotating speed is 900r/min, and the stirring temperature is room temperature;

(2) and (2) adding acetic acid into the system obtained in the step (1) to adjust the pH value to 5.0-7.0, so as to obtain the silicone oil emulsion with stable soft nanoparticles.

Example 3

A preparation method of silicone oil emulsion with stable soft nanoparticles comprises the following steps:

(1) putting 26 parts by weight of amino silicone oil and 2 parts by weight of emulsifier isomeric tridecanol ethoxylate into a reaction container for high-speed shearing emulsification, wherein the stirring time is 90min, the rotating speed is 900r/min, and the stirring temperature is room temperature;

(2) adding acetic acid into the system obtained in the step (1) to adjust the pH value to 5.0-7.0;

(3) and (3) slowly adding 4 parts by weight of poly (isooctyl acrylate) emulsion (PEHA,170nm) into the system obtained in the step (2), and continuously stirring for 60-90min to obtain the silicone oil emulsion with stable soft nano particles.

Example 4

A preparation method of silicone oil emulsion with stable soft nanoparticles comprises the following steps:

(1) putting 26 parts by weight of amino silicone oil and 2 parts by weight of emulsifier fatty acid methyl ester ethoxylate into a reaction container for high-speed shearing emulsification, wherein the stirring time is 90min, the rotating speed is 900r/min, and the stirring temperature is room temperature;

(2) adding acetic acid into the system obtained in the step (1) to adjust the pH value to 5.0-7.0;

(3) and (3) slowly adding 18 parts by weight of polybutyl acrylate emulsion (PBA,150nm) into the system obtained in the step (2), and continuously stirring for 60-90min to obtain the silicone oil emulsion with stable soft nanoparticles.

Example 5

A preparation method of silicone oil emulsion with stable soft nanoparticles comprises the following steps:

(1) putting 26 parts by weight of amino silicone oil and 2 parts by weight of emulsifier fatty acid methyl ester ethoxylate into a reaction container for high-speed shearing emulsification, wherein the stirring time is 90min, the rotating speed is 900r/min, and the stirring temperature is room temperature;

(2) adding acetic acid into the system obtained in the step (1) to adjust the pH value to 5.0-7.0;

(3) and (3) slowly adding 28 parts by weight of a poly (acrylic acid propyl ester) emulsion (PPA,120nm) into the system obtained in the step (2), and continuously stirring for 60-90min to obtain the silicone oil emulsion with stable soft nanoparticles.

The performance test results of the silicone oil emulsions stabilized by the soft nanoparticles prepared in examples 1 to 5 are shown in table 1, and the silicone oil emulsions stabilized by the soft nanoparticles have excellent centrifugal stability, are milky and translucent in appearance, and are stable and not layered.

In the step of preparing the soft nanoparticle-stabilized silicone oil emulsion, the emulsifier reduces the interfacial tension between the amino silicone oil and water in the mixed system, and forms a firmer film on the surface of the amino silicone oil droplets or forms an electric double layer on the surface of the droplets due to the electric charge given by the emulsifier, preventing the droplets from aggregating with each other. The soft nanoparticles have proper hydrophilicity, so that the soft nanoparticles and the emulsifier form a physical barrier on an oil-water interface, the interface oil-water interaction and liquid drop contact are blocked by volume exclusion, and the behavior of the particles adsorbed on the interface depends on the wettability of the soft nanoparticles and is irreversible. Therefore, changing the order of addition of the soft nanoparticles does not affect the stability of the silicone oil emulsion.

Comparative example 1 was prepared as in example 3 except that soft nanoparticles were not added in step (1) of comparative example 1 and the amount of the emulsifier isomeric tridecanol ethoxylate was increased to 14 parts by weight.

The main performance indicators of the soft nanoparticle-stabilized silicone oil emulsions prepared in comparative example 1, examples 2 and 3 are shown in the table below

Emulsion properties of the soft nanoparticle-stabilized silicone oil emulsions prepared in comparative example 1, examples 2 and 3, in turn, as shown in fig. 1, the soft nanoparticle-stabilized silicone oil emulsions have good dispersibility.

Application example 1

The silicone oil emulsion obtained in the embodiment 4 is prepared into 15g/L finishing liquid, the polyester filament yarn fabric is finished in a padding finishing mode, and the finished fabric is obtained after the polyester filament yarn fabric is dried for 90s at 170 ℃.

Application example 2

Preparing 25g/L finishing liquid from the silicone oil emulsion obtained in the embodiment 4, finishing the polyester filament yarn fabric in a padding finishing mode, and drying for 90s at 170 ℃ to obtain the finished fabric.

Application example 3

And (3) preparing 25g/L finishing liquid from the silicone oil emulsion obtained in the comparative example 1, finishing the polyester filament yarn fabric in a padding finishing mode, and drying for 90s at 170 ℃ to obtain the finished fabric.

As shown in FIG. 2, the apparent morphologies of examples 1 to 3 were examined under a scanning electron microscope.

According to the experimental results, the silicone oil emulsion with stable soft nanoparticles prepared by the preparation method has excellent stability and adsorbability on fibers, and can be effectively applied to the field of textile finishing.

In summary, the invention has the following advantages:

1. the invention solves the problems of poor stability and poor finishing effect of the traditional silicone oil emulsion, has excellent emulsion stability and good adhesiveness on the fiber, and can effectively improve the air permeability and the flexibility of the textile, thereby improving the practicability and the comfort of the textile; meanwhile, the method has the characteristics of low cost and simple process.

2. The soft particles can be stretched and deformed at an oil-water interface, so that the interface adsorption energy and the particle coverage area are increased, and the emulsion dispersion stability is improved more obviously, so that the soft particles have better emulsifying property on silicone oil, the formed emulsion has better stability, and the soft particles have small influence on the hand feeling, the softness and the like of fabrics.

3. The silicone oil emulsion with stable soft nanoparticles forms a physical barrier through the soft nanoparticles adsorbed on an oil-water interface, and prevents the oil-water interaction and the liquid drop contact of the interface through volume exclusion, and the behavior of the particles adsorbed on the interface is irreversible.

4. The emulsion finishing agent is applied to the post-treatment of textiles, so that the textiles finished by the emulsion can keep excellent air permeability and flexibility, and the requirement of modern people on the comfort of the textiles is met. The emulsifying process provided by the invention is simple, the process is easy to implement and control, the popularization and the production are facilitated, the designability is strong, the process adjustment is convenient, and the obtained material has wide application prospects in the fields of textiles, cosmetics and the like.

It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.