Eucyl amide emulsion and preparation method thereof

Abstract

The invention relates to the field of lubricants, and particularly discloses erucyl amide emulsion and a preparation method thereof. The erucyl amide emulsion comprises the following raw materials in parts by weight: 80-100 parts of water, 50-60 parts of erucyl amide, 1-4 parts of a dispersant, 1-4 parts of an emulsifier, 1-3 parts of a defoaming agent, 2-6 parts of a stabilizer, 1-3 parts of a nano filler compatilizer and 1-3 parts of an antifreeze agent. The preparation method comprises the following steps: S1, uniformly mixing erucyl amide and water, heating to 85-90 DEG C, stirring for 20-30 minutes, and grinding to obtain a primary mixture; s2, adding a dispersing agent, an emulsifying agent, a defoaming agent, a stabilizing agent, a nanofiller compatilizer and an anti-freezing agent into the primary mixture, and uniformly mixing and stirring to obtain a mixture; and S3, cooling the mixture to obtain a finished product. And the low-temperature-resistant polyurethane elastomer has the advantages of good compatibility with high polymer materials, good dispersion stability and good low-temperature fluidity.

Description

Technical Field

[0001] This application relates to the field of lubricants, and more specifically, to an erucamide emulsion and a preparation method thereof. Background Art

[0002] Erucamide is an important derivative of erucic acid with a relatively high melting point and good thermal stability. Therefore, it is mainly used as an anti-sticking agent and slip agent for various polymer materials and resins, and an excellent lubricant and antistatic agent for extruded films.

[0003] The erucamide emulsion uses erucamide as the raw material and is mainly used in the polymer materials, rubber, and ink industries. In order to improve environmental protection, water-based erucamide emulsions have gradually attracted people's attention. With their good lubricity and dispersibility, they can play a good lubricating and dispersing effect during the processing of high-performance polymer materials.

[0004] However, the water-based erucamide emulsion has poor compatibility with high-performance polymer materials, and problems such as delamination and peeling are likely to occur. Moreover, under low-temperature conditions, the viscosity of the water-based erucamide emulsion increases, the intermolecular interaction force of the emulsion increases, and it is likely to affect the fluidity of the emulsion.

[0005] Therefore, how to prepare a new erucamide emulsion that has good compatibility with polymer materials, good dispersion stability, and good low-temperature fluidity is a problem to be solved. Summary of the Invention

[0006] In order to prepare a new erucamide emulsion that has good compatibility with polymer materials, good dispersion stability, and good low-temperature fluidity, this application provides an erucamide emulsion and a preparation method thereof.

[0007] In the first aspect, this application provides an erucamide emulsion, adopting the following technical solution: An erucamide emulsion, the emulsion contains the following raw materials in parts by weight: 80 - 100 parts of water, 50 - 60 parts of erucamide, 1 - 4 parts of dispersant, 1 - 4 parts of emulsifier, 1 - 3 parts of defoamer, 2 - 6 parts of stabilizer, 1 - 3 parts of nano-filler compatibilizer, and 1 - 3 parts of antifreeze agent.

[0008] By adopting the above technical solution, with the cooperation of the dispersant, emulsifier, and stabilizer, erucamide, nano-filler compatibilizer, and antifreeze agent are uniformly dispersed in the erucamide emulsion, improving the dispersion stability of the erucamide emulsion, making it not easy to have delamination problems, being able to be uniformly mixed with polymer material raw materials, cooperating with the compatibility enhancement effect of the nano-filler compatibilizer to improve the compatibility between the erucamide emulsion and polymer materials, and cooperating with the antifreeze effect of the antifreeze agent to ensure that the erucamide emulsion still has good fluidity at relatively low temperatures.

[0009] Preferably, the nano-filler compatibilizer is made of nano-hydroxyapatite and maleic anhydride-modified mesoporous silica with a mass ratio of 1:0.5 - 1.

[0010] By adopting the above technical solution, nano-hydroxyapatite has excellent adsorption performance and surface activity. Utilizing the surface activity and nano-size effect of nano-hydroxyapatite and mesoporous silica, anchor points are formed with the polymer material and are tightly embedded on the surface of the polymer material, which can effectively adsorb on the oil-water interface in the erucamide emulsion, reduce the interfacial tension, and thus improve the dispersion stability of the emulsion; combined with the good adhesion compatibility between maleic anhydride and the polymer material, the dispersion stability of the erucamide emulsion is improved, and the adhesion compatibility between the erucamide emulsion and the polymer material is also improved.

[0011] Nano-hydroxyapatite and maleic anhydride-modified mesoporous silica have good anti-freezing effects and maintain the fluidity of the erucamide emulsion under low-temperature conditions.

[0012] Preferably, the nano-hydroxyapatite is prepared from nano-hydroxyapatite particles and polyethylene glycol solution with a mass ratio of 1:0.2 - 0.5.

[0013] By adopting the above technical solution, the nano-hydroxyapatite shows the loading of polyethylene glycol. The hydroxyl group of polyethylene glycol is convenient for connecting with erucamide, improving the dispersion effect and stability of erucamide in the erucamide emulsion. And polyethylene glycol can lower the freezing point of water, thus ensuring the low-temperature fluidity of the emulsion. Combined with the large specific surface area of nano-hydroxyapatite, the erucamide in contact with it nearby can flow well, and the problem of increased low-temperature adhesiveness is not likely to occur. At the same time, the hydroxyl group in the polyethylene glycol molecule can further connect with the polar groups on the surface of the polymer material, further improving the dispersion stability of the erucamide emulsion.

[0014] Preferably, the maleic anhydride-modified mesoporous silica is prepared by loading n-butanol on mesoporous silica and then bonding maleic anhydride solution, and the mass ratio of mesoporous silica to maleic anhydride solution is 1:0.1 - 0.3.

[0015] By adopting the above technical solution, mesoporous silica uses its mesoporous structure to load n-butanol, and then bonds maleic anhydride solution, and the maleic anhydride solution dries into a film; using the good compatibility between maleic anhydride and the surface of the polymer material, the compatibility between the polymer material and the erucamide emulsion is improved, and using n-butanol to lower the freezing point of the erucamide emulsion to ensure the low-temperature fluidity of the erucamide emulsion.

[0016] Preferably, the antifreeze is composed of magnesium silicate hydrate and polyethylene glycol 600 with a mass ratio of 1:1 - 3.

[0017] By adopting the above technical solution, magnesium silicate hydrate has a layered structure, which is convenient for adsorbing and fixing water molecules, reducing the content of free water in the emulsion, preventing the formation of ice crystals at low temperatures and hindering the flow effect of erucamide in the erucamide emulsion. Moreover, polyethylene glycol 600, as a liquid, can form a stable protective layer under low-temperature conditions. While further preventing water crystallization, it can also utilize its lubricating effect and dispersibility to ensure the flow effect of the erucamide emulsion under low-temperature conditions.

[0018] Preferably, the dispersant is composed of fatty alcohol polyoxyethylene ether and sodium dodecylbenzenesulfonate with a mass ratio of 1:0.1 - 0.5.

[0019] By adopting the above technical solution, fatty alcohol polyoxyethylene ether and sodium dodecylbenzenesulfonate have amphiphilic properties of hydrophilic and lipophilic. In the erucamide emulsion, they can effectively reduce the surface tension, promote the uniform mixing of each component in the emulsion. And the hydrophilic group of polyoxyethylene ether and the sulfonic acid group can form hydrogen bonds with water molecules, improving the water-phase dispersibility in the emulsion. The fatty acid chain segments combine with the oil-phase components, preventing the aggregation and sedimentation of the oil-phase components through steric hindrance effects, ensuring the stability and fluidity of the emulsion.

[0020] Preferably, the stabilizer is composed of chitosan amine and castor oil phosphate with a mass ratio of 1:0.5 - 1.

[0021] By adopting the above technical solution, chitosan amine contains amino groups that can form hydrogen bonds with water molecules. Combining with the amphiphilic properties of hydrophilic and lipophilic in castor oil phosphate, it can improve the stability of the erucamide emulsion, enhance the anti-coalescence ability of the emulsion, prevent the merger between emulsion droplets, ensure the fineness of the emulsion, thus ensuring the fluidity of the emulsion. At the same time, chitosan amine and castor oil phosphate can enhance the interfacial compatibility and wettability between the erucamide emulsion and the surface of the polymer material, improve the compatibility degree between the erucamide emulsion and the polymer material. Combining with the interaction between chitosan amine molecules and the polar groups on the surface of the polymer material, it can improve the interfacial binding force and further enhance the stability of the erucamide emulsion.

[0022] Preferably, the emulsifier is Tween 80.

[0023] By adopting the above technical solution, Tween 80 molecules have hydrophilic and lipophilic ends, which can reduce the interfacial tension between water and oil, making the two easier to mix and form a stable emulsion, improving the stability of the erucamide emulsion. Tween 80 can form an interfacial film around the erucamide droplets in the emulsion, preventing the mutual aggregation and merger between emulsion droplets, thus maintaining the stability of the emulsion. Tween 80 can also interact with components such as erucamide to improve its solubility and dispersion state in the emulsion, ensuring the flow effect.

[0024] Preferably, the defoamer is an organosilicon defoamer.

[0025] By adopting the above technical solutions, the addition of silicone defoamer can effectively reduce the foam generated during production and use, improve the stability and application effect of the emulsion; and the silicone defoamer also has good chemical stability and thermal stability, can be compatible with other components in the erucamide emulsion, and will not have an adverse effect on the performance of the emulsion.

[0026] In a second aspect, the present application provides a method for preparing an erucamide emulsion, adopting the following technical solutions: A method for preparing an erucamide emulsion, comprising the following steps: S1. Mix erucamide and water evenly, heat up to 85 - 90 °C and stir for 20 - 30 min, then grind to obtain a preliminary mixture; S2. Add a dispersant, an emulsifier, a defoamer, a stabilizer, a compatibilizer for nano-fillers, and an antifreeze agent to the preliminary mixture and stir evenly to obtain a mixed material; S3. Cool the mixed material to obtain the finished product.

[0027] By adopting the above technical solutions, at a relatively high temperature, the mixing and dispersion of erucamide and water are promoted, and then other additives are added to ensure the dispersion effect, stability and flow effect of the erucamide emulsion. By using the compatibilizer for nano-fillers and the antifreeze agent, the erucamide emulsion has the advantages of good compatibility with polymer materials, good dispersion stability and good low-temperature fluidity.

[0028] In summary, the present application has the following beneficial effects: 1. By cooperating with a dispersant, an emulsifier and a stabilizer, erucamide, the compatibilizer for nano-fillers and the antifreeze agent are evenly dispersed in the erucamide emulsion, improving the dispersion stability of the erucamide emulsion, not easily showing a layering problem, being able to be evenly mixed with polymer material raw materials, cooperating with the compatibilizer for nano-fillers to enhance the compatibility effect, improving the compatibility between the erucamide emulsion and polymer materials, and cooperating with the antifreeze effect of the antifreeze agent to ensure that the erucamide emulsion still has good fluidity at a relatively low temperature.

[0029] 2. Nano-hydroxyapatite has excellent adsorption properties and surface activity. By using the surface activity and nano-size effect of nano-hydroxyapatite and mesoporous silica, anchor points are formed with polymer materials and tightly embedded on the surface of polymer materials, which can effectively adsorb on the oil-water interface in the erucamide emulsion, reducing the interfacial tension, thereby improving the dispersion stability of the emulsion; cooperating with the good adhesion compatibility between maleic anhydride and polymer materials, improving the dispersion stability of the erucamide emulsion and also improving the adhesion compatibility between the erucamide emulsion and polymer materials.

[0030] 3. Magnesium silicate hydrate has a layered structure, which is convenient for adsorbing and fixing water molecules, reducing the content of free water in the emulsion, preventing the formation of ice crystals at low temperatures and hindering the flow effect of erucamide in the erucamide emulsion. Moreover, polyethylene glycol 600, as a liquid, can form a stable protective layer under low-temperature conditions. While further preventing water crystallization, it can also utilize its lubricating effect and dispersibility to ensure the flow effect of the erucamide emulsion under low-temperature conditions.

[0031] 4. During the preparation process of the erucamide emulsion, maleic anhydride is melted at 85 - 90 °C, but n-butanol is not easily volatilized. This ensures the dispersion of n-butanol in the erucamide emulsion, guarantees the fluidity of the erucamide emulsion, and utilizes the effect of n-butanol in reducing the freezing point to ensure that the erucamide emulsion has good low-temperature fluidity. Specific embodiments

[0032] The following further elaborates on the present application in conjunction with examples.

[0033] Preparation examples of nano-hydroxyapatite The following raw materials are all commercially available.

[0034] Preparation example 1: Nano-hydroxyapatite was prepared by the following method: 0.35 kg of polyethylene glycol solution was evenly sprayed on the surface of 1 kg of nano-hydroxyapatite particles. The average particle size of the nano-hydroxyapatite particles was 500 nm, the average porosity of the nano-hydroxyapatite particles was 5%, the polyethylene glycol solution was an aqueous solution of polyethylene glycol with a mass fraction of 5%, and the polyethylene glycol was polyethylene glycol 1000. After drying and dispersing until the nano-hydroxyapatite particles did not adhere and agglomerate to each other, nano-hydroxyapatite was obtained.

[0035] Preparation example 2: The difference between this preparation example and preparation example 1 is as follows: 0.2 kg of polyethylene glycol solution was evenly sprayed on the surface of 1 kg of nano-hydroxyapatite particles. The average particle size of the nano-hydroxyapatite particles was 500 nm, the average porosity of the nano-hydroxyapatite particles was 5%, the polyethylene glycol solution was an aqueous solution of polyethylene glycol with a mass fraction of 5%, and the polyethylene glycol was polyethylene glycol 1000. After drying and dispersing until the nano-hydroxyapatite particles did not adhere and agglomerate to each other, nano-hydroxyapatite was obtained.

[0036] Preparation example 3: The difference between this preparation example and preparation example 1 is as follows: Spray 0.5 kg of polyethylene glycol solution evenly on the surface of 1 kg of nano-hydroxyapatite particles. The average particle size of the nano-hydroxyapatite particles is 500 nm, and the average porosity of the nano-hydroxyapatite particles is 5%. The polyethylene glycol solution is an aqueous solution of polyethylene glycol with a mass fraction of 5%, and the polyethylene glycol is polyethylene glycol 1000. After drying and dispersing until the nano-hydroxyapatite particles do not adhere and agglomerate to each other, nano-hydroxyapatite is obtained.

[0037] Preparation Example of Maleic Anhydride-Modified Mesoporous Silica All the following raw materials are commercially available.

[0038] Preparation Example 4: The maleic anhydride-modified mesoporous silica is prepared by the following method: Place 1 kg of mesoporous silica in 10 kg of n-butanol. The average particle size of the mesoporous silica is 300 nm. Ultrasonically disperse for 20 min under the condition of 20 kHz, let it stand for 10 min, and then filter and separate the mesoporous silica to obtain the carrier mesoporous silica; spray 0.2 kg of maleic anhydride solution evenly on the surface of 1 kg of the carrier mesoporous silica. The maleic anhydride solution is prepared by completely melting maleic anhydride by heating to 60 °C. After drying and dispersing until the carrier mesoporous silica does not adhere and agglomerate to each other, maleic anhydride-modified mesoporous silica is obtained.

[0039] Preparation Example 5: The difference between this preparation example and Preparation Example 4 is that: Place 1 kg of mesoporous silica in 10 kg of n-butanol. The average particle size of the mesoporous silica is 300 nm. Ultrasonically disperse for 20 min under the condition of 20 kHz, let it stand for 10 min, and then filter and separate the mesoporous silica to obtain the carrier mesoporous silica; spray 0.1 kg of maleic anhydride solution evenly on the surface of 1 kg of the carrier mesoporous silica. The maleic anhydride solution is prepared by completely melting maleic anhydride by heating to 60 °C. After drying and dispersing until the carrier mesoporous silica does not adhere and agglomerate to each other, maleic anhydride-modified mesoporous silica is obtained.

[0040] Preparation Example 6: The difference between this preparation example and Preparation Example 4 is that: Place 1 kg of mesoporous silica in 10 kg of n-butanol. The average particle size of the mesoporous silica is 300 nm. Ultrasonically disperse for 20 min under the condition of 20 kHz, let it stand for 10 min, and then filter and separate the mesoporous silica to obtain the carrier mesoporous silica; spray 0.3 kg of maleic anhydride solution evenly on the surface of 1 kg of the carrier mesoporous silica. The maleic anhydride solution is prepared by completely melting maleic anhydride by heating to 60 °C. After drying and dispersing until the carrier mesoporous silica does not adhere and agglomerate to each other, maleic anhydride-modified mesoporous silica is obtained. Examples

[0041] All the following raw materials are commercially available.

[0042] Example 1: An erucamide emulsion: 90 kg of water, 55 kg of erucamide, 2.5 kg of dispersant, 2.5 kg of emulsifier, 2 kg of defoamer, 4 kg of stabilizer, 2 kg of nano-filler compatibilizer, 2 kg of antifreeze; the dispersant is composed of fatty alcohol polyoxyethylene ether and sodium dodecylbenzenesulfonate with a mass ratio of 1:0.3; the emulsifier is Tween 80; the defoamer is silicone defoamer; the stabilizer is composed of chitosan amine and castor oil phosphate with a mass ratio of 1:0.8; the nano-filler compatibilizer is made of nano-hydroxyapatite prepared in Preparation Example 1 and maleic anhydride modified mesoporous silica prepared in Preparation Example 4 with a mass ratio of 1:0.8; the antifreeze is composed of magnesium hydrosilicate and polyethylene glycol 600 with a mass ratio of 1:2; The preparation method is as follows: S1. Mix erucamide and water evenly, heat to 90 °C and stir for 25 min, then grind until the particle size of erucamide is less than 0.5 μm to obtain a preliminary mixture; S2. Add dispersant, emulsifier, defoamer, stabilizer, nano-filler compatibilizer, and antifreeze to the preliminary mixture and stir evenly to obtain a mixed material; S3. Cool the mixed material to room temperature to obtain the finished product.

[0043] Example 2: The difference between this example and Example 1 is: 80 kg of water, 50 kg of erucamide, 1 kg of dispersant, 1 kg of emulsifier, 1 kg of defoamer, 2 kg of stabilizer, 1 kg of nano-filler compatibilizer, 1 kg of antifreeze; the dispersant is composed of fatty alcohol polyoxyethylene ether and sodium dodecylbenzenesulfonate with a mass ratio of 1:0.1; the emulsifier is Tween 80; the defoamer is silicone defoamer; the stabilizer is composed of chitosan amine and castor oil phosphate with a mass ratio of 1:0.5; the nano-filler compatibilizer is made of nano-hydroxyapatite prepared in Preparation Example 2 and maleic anhydride modified mesoporous silica prepared in Preparation Example 5 with a mass ratio of 1:0.5; the antifreeze is composed of magnesium hydrosilicate and polyethylene glycol 600 with a mass ratio of 1:1; The preparation method is as follows: S1. Mix erucamide and water evenly, heat to 85 °C and stir for 30 min, then grind until the particle size of erucamide is less than 0.5 μm to obtain a preliminary mixture; S2. Add dispersant, emulsifier, defoamer, stabilizer, nano-filler compatibilizer, and antifreeze to the preliminary mixture and stir evenly to obtain a mixed material; S3. Cool the mixed material to room temperature to obtain the finished product.

[0044] Example 3: The difference between this example and Example 1 is: 100 kg of water, 60 kg of erucamide, 4 kg of dispersant, 4 kg of emulsifier, 3 kg of defoamer, 6 kg of stabilizer, 3 kg of nano-filler compatibilizer, 3 kg of antifreeze; the dispersant is composed of fatty alcohol polyoxyethylene ether and sodium dodecylbenzenesulfonate with a mass ratio of 1:0.5; the emulsifier is Tween 80; the defoamer is silicone defoamer; the stabilizer is composed of chitosan acetylamine and castor oil phosphate with a mass ratio of 1:1; the nano-filler compatibilizer is made of nano-hydroxyapatite prepared in Preparation Example 3 and maleic anhydride modified mesoporous silica prepared in Preparation Example 4 with a mass ratio of 1:1; the antifreeze is composed of magnesium silicate hydrate and polyethylene glycol 600 with a mass ratio of 1:3; The preparation method is as follows: S1. Mix erucamide and water evenly, heat to 90 °C and stir for 20 min, then grind until the particle size of erucamide is less than 0.5 μm to obtain a preliminary mixture; S2. Add the dispersant, emulsifier, defoamer, stabilizer, nano-filler compatibilizer, and antifreeze to the preliminary mixture and stir evenly to obtain a mixed material; S3. Cool the mixed material to room temperature to obtain the finished product.

[0045] Example 4: The difference between this example and Example 1 is that: In the raw materials of the nano-filler compatibilizer, the nano-hydroxyapatite preparation process is not treated with polyethylene glycol solution, and it is only ordinary commercially available nano-hydroxyapatite particles.

[0046] Example 5: The difference between this example and Example 1 is that: In the raw materials of the nano-filler compatibilizer, the maleic anhydride modified mesoporous silica is replaced with an equal mass of supported mesoporous silica; Specifically: Place 1 kg of mesoporous silica in 10 kg of n-butanol. The average particle size of the mesoporous silica is 300 nm. Ultrasonically disperse for 20 min at 20 kHz, let stand for 10 min, and then filter and separate the mesoporous silica to obtain supported mesoporous silica.

[0047] Example 6: The difference between this example and Example 1 is that: In the preparation process of the maleic anhydride modified mesoporous silica in the raw materials of the nano-filler compatibilizer, n-butanol is not added; Specifically: Uniformly spray 0.2 kg of maleic anhydride solution on the surface of 1 kg of mesoporous silica. The maleic anhydride solution is obtained by completely melting maleic anhydride by heating to 60 °C. After drying and dispersing until the mesoporous silica does not adhere and agglomerate, maleic anhydride modified mesoporous silica is obtained.

[0048] Example 7: The difference between this example and Example 1 is that: Polyethylene glycol 600 is not added to the antifreeze raw materials.

[0049] Comparative example Comparative example 1: The difference between this comparative example and Example 1 is that: Nanofiller compatibilizer is not added to the raw materials.

[0050] Comparative example 2: The difference between this comparative example and Example 1 is that: Stabilizer is not added to the raw materials.

[0051] Performance detection test 1. Compatibility detection Prepare erucamide emulsions by the methods of Examples 1-5 and Comparative examples 1-2 respectively. Add the erucamide emulsion to the aqueous polyurethane emulsion, and the addition amount is 1%. After molding, observe the defects on the surface of the finished product, record the score, no mottling, no foaming is 10 points → severe mottling, severe foaming is 1 point.

[0052] 2. Stability detection Prepare erucamide emulsions by the methods of Examples 1-5 and Comparative examples 1-2 respectively. Place the erucamide emulsion in a cylindrical bottle and let it stand for 60 days. Observe the turbidity and stratification phenomenon, and record the turbidity and stratification level, no turbidity, no stratification phenomenon is 10 points → severe turbidity, severe stratification phenomenon is 1 point; Place the erucamide emulsion in a separating funnel and let it stand for 60 days. If there is precipitation, separate the precipitate deposited at the bottom layer, dry it to remove the solvent, weigh it, and record the data.

[0053] 3. Low-temperature fluidity detection Prepare erucamide emulsions by the methods of Examples 1-4, 6-7 respectively. Use a viscometer to detect the viscosity of the erucamide emulsion, which is recorded as the initial viscosity; place the erucamide emulsion at -5 °C for 1 day, and use a viscometer to detect its viscosity, which is recorded as the low-temperature viscosity. The viscosity of the erucamide emulsion is likely to increase as the temperature decreases; calculate the viscosity difference = low-temperature viscosity - initial viscosity. The larger the viscosity difference, the worse the low-temperature fluidity.

[0054] Table 1 Performance test table (in the table, " / " represents that the corresponding example or comparative example did not detect this item, so there is no data) Project Compatibility fraction / points Stable fraction / points Precipitation weight / g Viscosity difference / mPa·s Example 1 10 10 1.4 12.5 Example 2 9 9 1.8 13.8 Example 3 10 10 1.2 12.0 Example 4 8 8 2.0 15.6 Example 5 7 7 2.3 / Example 6 / / / 16.5 Example 7 / / 2.5 17.4 Comparative Example 1 5 6 3.0 / Comparative Example 2 4 5 3.5 / Combined with Examples 1-3 and Table 1, it can be seen that the compatibility score of the erucamide emulsion and the aqueous polyurethane emulsion is relatively high, the stability score of the erucamide emulsion during storage is relatively high, and the precipitation weight is relatively low, indicating that the erucamide emulsion has good compatibility and dispersion stability with polymer materials. At the same time, the viscosity difference is relatively small under low-temperature conditions, and the viscosity change is relatively small, indicating that the erucamide emulsion still has good fluidity under low-temperature conditions.

[0055] Combining Example 1 and Examples 4-7 and referring to Table 1, it can be seen that in the raw material of the nano-filler compatibilizer in Example 4, the preparation process of nano-hydroxyapatite was not treated with polyethylene glycol solution. Compared with Example 1, the compatibility fraction of the emulsion prepared in Example 4 was lower than that in Example 1, the stability fraction was lower than that in Example 1, the precipitation weight was greater than that in Example 1, and the viscosity difference was greater than that in Example 1. This shows that the presence of polyethylene glycol can improve the dispersion stability of erucamide in the erucamide emulsion, increase the compatibility between the erucamide emulsion and the polymer material. At the same time, polyethylene glycol has the effect of lowering the freezing point, which can control the low-temperature viscosity of the erucamide emulsion and ensure good low-temperature fluidity of the erucamide emulsion.

[0056] In Example 5, the maleic anhydride-modified mesoporous silica was replaced with carrier mesoporous silica of the same mass in the raw material of the nano-filler compatibilizer. Compared with Example 1, the compatibility fraction of the erucamide emulsion prepared in Example 5 was lower than that in Example 1, the stability fraction was lower than that in Example 1, and the precipitation weight was greater than that in Example 1. This shows that by using the good compatibility of maleic anhydride with the surface of the polymer material, the compatibility between the polymer material and the erucamide emulsion can be improved, and the stability of the erucamide emulsion can be enhanced.

[0057] In Example 6, during the preparation process of maleic anhydride-modified mesoporous silica in the raw material of the nano-filler compatibilizer, n-butanol was not added. Compared with Example 1, the viscosity difference of the erucamide emulsion prepared in Example 6 was greater than that in Example 1. This shows that n-butanol can lower the freezing point of the erucamide emulsion and ensure the low-temperature fluidity of the erucamide emulsion.

[0058] In Example 7, polyethylene glycol 600 was not added to the raw material of the antifreeze. Compared with Example 1, the precipitation weight of the erucamide emulsion prepared in Example 7 was greater than that in Example 1, and the viscosity difference was greater than that in Example 1. This shows that polyethylene glycol 600 can form a stable protective layer under low-temperature conditions, further preventing water crystallization. At the same time, it can utilize its lubrication effect and dispersibility to ensure the flow effect of the erucamide emulsion under low-temperature conditions. And polyethylene glycol can further improve the stability of the erucamide emulsion and reduce the precipitation amount.

[0059] Combining Example 1 and Comparative Examples 1-2 and referring to Table 1, it can be seen that in Comparative Example 1, the nano-filler compatibilizer was not added to the raw material. Compared with Example 1, the compatibility fraction of the erucamide emulsion prepared in Comparative Example 1 was lower than that in Example 1, the stability fraction was lower than that in Example 1, and the precipitation weight was greater than that in Example 1. This shows that the nano-filler compatibilizer can improve the compatibility effect between the erucamide emulsion and the polymer material, and enhance the stability of the erucamide emulsion, making it less likely to have problems such as turbidity and precipitation.

[0060] In Comparative Example 2, no stabilizer was added to the raw materials. Compared with Example 1, the compatibility fraction of the erucamide emulsion prepared in Comparative Example 2 was lower than that in Example 1, the stability fraction was lower than that in Example 1, and the precipitation weight was greater than that in Example 1. This shows that the stabilizer can improve the stability of the erucamide emulsion, thereby ensuring good compatibility between the erucamide emulsion and the polymer material. The erucamide emulsion has good dispersion stability and is not prone to problems such as turbidity and stratification.

[0061] This specific embodiment is only an interpretation of the present application and does not limit the present application. After reading this specification, those skilled in the art can make modifications to this embodiment that do not contribute creatively as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. An erucamide emulsion, characterized in that: The emulsion comprises the following raw materials in parts by weight: 80-100 parts of water, 50-60 parts of erucamide, 1-4 parts of dispersant, 1-4 parts of emulsifier, 1-3 parts of defoamer, 2-6 parts of stabilizer, 1-3 parts of nanofiller compatibilizer and 1-3 parts of antifreeze agent.

2. An erucamide emulsion according to claim 1, characterized in that: The nano filler compatibilizer is made of nano hydroxyapatite and maleic anhydride modified mesoporous silica in a mass ratio of 1:0.5-1.

3. An erucamide emulsion according to claim 2, characterized in that: The nano-hydroxyapatite is prepared from nano-hydroxyapatite particles and polyethylene glycol solution in a mass ratio of 1:0.2-0.

5.

4. An erucamide emulsion according to claim 2, characterized in that: The maleic anhydride modified mesoporous silica is prepared by loading n-butanol on mesoporous silica and then bonding it with maleic anhydride melt, and the mass ratio of the mesoporous silica to the maleic anhydride melt is 1:0.1-0.

3.

5. An erucamide emulsion according to claim 1, characterized in that: The antifreeze agent consists of hydrated magnesium silicate and polyethylene glycol 600 in a mass ratio of 1:1-3.

6. An erucamide emulsion according to claim 1, characterized in that: The dispersant is composed of fatty alcohol polyoxyethylene ether and sodium dodecylbenzene sulfonate in a mass ratio of 1:0.1-0.

5.

7. An erucamide emulsion according to claim 1, characterized in that: The stabilizer is composed of acetyl glucosamine and castor oil phosphate in a mass ratio of 1:0.5-1.

8. An erucamide emulsion according to claim 1, characterized in that: The emulsifier is Tween 80.

9. An erucamide emulsion according to claim 1, characterized in that: The defoamer is an organosilicon defoamer.

10. A method for preparing an erucamide emulsion according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Mix erucamide and water evenly, heat to 85-90° C. and stir for 20-30 min, then grind to obtain a primary mixture; S2, adding dispersant, emulsifier, defoamer, stabilizer, nanofiller compatibilizer and antifreeze agent to the primary mixture, mixing and stirring evenly to obtain a mixture; S3. The mixture is cooled to obtain a finished product.