Process for the production of a lubricating dispersing aid for plastics processing

Abstract

The application relates to the field of plastic processing dispersant preparation, and specifically discloses a processing method of a lubricating dispersing aid for plastic processing, which comprises the following steps: adding ester modified whiskers in palm oil according to a mass ratio of 100:3-5, ultrasonic dispersing for 2-4 min under the condition of 50-58 DEG C, filtering out the ester modified whiskers, and obtaining pretreated palm oil; adding emulsifiers and catalysts in the pretreated palm oil according to a mass ratio of 100:1-3:0.5-1, uniformly mixing and stirring under the condition of keeping the temperature of 50-58 DEG C, and obtaining a mixture; cooling the mixture to 15-20 DEG C, adding an inducer in the cooling process, the mass ratio of the mixture and the inducer being 100:0.5-1, ultrasonic dispersing for 30-60 s after cooling, and obtaining a semi-finished product; and the semi-finished product is separated, packaged and stored to obtain palm oil fat; and the palm oil fat has the advantage of improved quality.

Description

Technical Field

[0001] This application relates to the field of preparation of dispersants for plastic processing, and more specifically, it relates to a processing method for a lubricating dispersant for plastic processing. Background Technology

[0002] In plastic processing, lubricants and dispersants are often added to ensure the quality of plastic processing. Palm oil, as an environmentally friendly and renewable natural oil, is continuously available. Palm oil can ensure that additives such as pigments or fillers in plastics are evenly distributed, thereby improving the overall quality and consistency of the product. At the same time, palm oil can reduce melt viscosity and effectively improve the processing performance of plastics, increasing production efficiency while reducing energy consumption and equipment wear. The natural antioxidants in palm oil help enhance the oxidation resistance of plastics and can extend the service life of products.

[0003] The processing of lubricating oils generally includes the following steps: raw material collection and screening, fruit processing, pressing and extraction, filtration, refining, purification, crystallization, separation, packaging, and storage. Crystallized palm oil can achieve the separation of different fatty acid components. Promoting the rapid crystallization of palm oil can not only shorten the production cycle and improve production efficiency, but also make the resulting palm oil more delicate and uniform, thus improving its quality.

[0004] In the prior art, Chinese patent document CN106497674A discloses a method for promoting oil crystallization, characterized by the following steps: (1) eliminating crystallization memory in the oil; (2) adding an emulsifier to the oil at 60-85℃, wherein the emulsifier is polyglycerol fatty acid ester, distilled glyceryl monostearate, sodium stearoyl lactylate or propylene glycol fatty acid ester, and stirring evenly; (3) cooling down to 20-35℃; (4) treating the sample obtained in step (3) with high-intensity ultrasound, wherein the ultrasound power is 190-285W and the ultrasound time is 10-60s, wherein the ultrasound instrument is turned off for 5s after every 5s of operation; In the process of eliminating crystallization memory and adding emulsifier for mixing and stirring, not only is the temperature high, but the stirring time is also long, which easily causes oxidation problems in palm oil during processing.

[0005] Therefore, how to accelerate the crystallization rate of palm oil in lubricating greases and prevent excessive oxidation and deterioration of palm oil during processing, thus ensuring the quality of palm oil and enabling its use in the processing of high-quality plastics, is a problem that needs to be solved. Summary of the Invention

[0006] In order to accelerate the crystallization rate of palm oil in lubricating grease and prevent excessive oxidation and deterioration of palm oil during processing, thus ensuring the quality of palm oil and enabling its use in the processing of high-quality plastics, this application provides a processing method for a lubricating dispersant for plastic processing.

[0007] This application provides a processing method for a lubricating and dispersing agent for plastic processing, which adopts the following technical solution:

[0008] A processing method for a lubricating and dispersing agent for plastic processing includes the following steps:

[0009] S1. Add ester-modified whiskers to palm oil at a mass ratio of 100:3-5, ultrasonically disperse at 50-58℃ for 2-4 minutes, filter out the ester-modified whiskers, and obtain pretreated palm oil.

[0010] S2. Add emulsifier and catalyst to pretreated palm oil at a mass ratio of 100:1-3:0.5-1, and mix and stir at a temperature of 50-58℃ to obtain a mixture.

[0011] S3. Cool the mixture to 15-20℃. Add an inducing agent during the cooling process. The mass ratio of the mixture to the inducing agent is 100:0.5-1. After cooling, ultrasonically disperse for 30-60 seconds to obtain a semi-finished product. After separation, packaging and storage, the semi-finished product is used to obtain palm oil.

[0012] By adopting the above technical solution, ester-modified whiskers are added to palm oil, and then ultrasonically dispersed after heating. The ultrasonic dispersion time is limited to a short time to ensure that the original crystal memory in the purified palm oil is eliminated. Combined with the subsequent heating and ultrasonic dispersion and the cutting effect of the ester-modified whiskers, it is easier for the palm oil to form a finer and more uniform crystal structure, thereby improving the quality of palm oil and enabling it to be used in the processing of high-quality plastics.

[0013] By utilizing the mutual attraction between the ester groups on the surface of ester-modified whiskers and the lipophilic groups in palm oil, the ester-modified whiskers are easily attracted to the crystalline structure composed of fatty acid glycerides in palm oil. The penetrating effect of the whiskers, combined with ultrasonic dispersion, makes it easier for the whiskers to cut the crystalline structure of fatty acid molecular chains. The original crystalline memory structure is eliminated, which further facilitates the formation of a finer and more uniform crystalline structure in palm oil, thus improving the quality of palm oil.

[0014] After eliminating crystallization memory, palm oil is mixed evenly with emulsifiers and catalysts. Under the condition of maintaining the temperature, the aggregation and accumulation of palm oil molecules are avoided as much as possible, which would affect the formation of a fine and uniform crystal structure. Under the induction of the emulsifier and the catalytic effect of the catalyst, the palm oil that has eliminated crystallization memory uses small molecules as the crystallization starting point, and the crystal nuclei grow rapidly. With the subsequent inducing agent, the palm oil molecules are provided with a template for attachment and arrangement, reducing the energy barrier for crystallization, further promoting the rapid and uniform formation of crystals, and improving the quality of palm oil.

[0015] By limiting the temperature and ultrasonic dispersion time, and under conditions of lower temperature and shorter ultrasonic time, palm oil is less prone to oxidation, thus extending its shelf life.

[0016] Preferably, the ester-modified whiskers are prepared from cellulose acetate butyrate, sodium carboxymethyl cellulose solution, and porous hydroxyapatite whiskers in a mass ratio of 1:1-2:3-8.

[0017] By employing the above technical solution, the adhesive effect of sodium carboxymethyl cellulose solution is used to adhere cellulose acetate butyrate to the surface of porous hydroxyapatite whiskers. The lipophilic effect of cellulose acetate butyrate facilitates mutual attraction and contact with palm oil, allowing the porous hydroxyapatite whiskers to reach the palm oil crystalline structure. Utilizing the cutting effect of the whiskers and the flow-conducting effect of the porous structure, under ultrasonic conditions, the crystalline network of palm oil can be rapidly dispersed, achieving rapid elimination of crystalline memory. Furthermore, the sodium carboxymethyl cellulose solution is insoluble in oil, ensuring relatively stable adhesion of cellulose acetate butyrate to the surface of the porous hydroxyapatite whiskers, thereby guaranteeing the destructive effect on the crystalline network.

[0018] Even during the ultrasonic process, a small amount of cellulose acetate butyrate and sodium carboxymethyl cellulose remain in the palm oil. This not only does not affect the quality of the palm oil, but the acetate butyrate group in cellulose acetate butyrate, combined with the carboxymethyl group in sodium carboxymethyl cellulose, can further promote the orderly arrangement of palm oil molecules, facilitate the formation of crystal nuclei, reduce crystallization energy, promote crystal formation, and achieve the effect of rapid crystallization.

[0019] Preferably, the cellulose acetate butyrate has an average particle size of 3-5 μm and the porous hydroxyapatite whiskers have an average length of 80-150 μm.

[0020] By adopting the above technical solution, the particle size of cellulose acetate butyrate and the particle size of porous hydroxyapatite whiskers are limited, ensuring the cutting effect while facilitating the rapid arrival of ester-modified whiskers into the crystalline network of fatty acid molecules. Under ultrasonic conditions, not only can crystallization memory be quickly eliminated, but small molecules can also form crystals rapidly and uniformly under the action of emulsifiers and catalysts, thereby improving the quality of palm oil.

[0021] Preferably, the sodium hydroxymethyl cellulose solution is an aqueous solution of sodium hydroxymethyl cellulose with a mass fraction of 1-3% and a molecular weight of sodium hydroxymethyl cellulose of 200,000-400,000.

[0022] By adopting the above technical solution, high molecular weight sodium carboxymethyl cellulose not only has a high viscosity, which facilitates the stable adhesion of cellulose acetate butyrate to the porous hydroxyapatite surface, but the porous hydroxyapatite whiskers also have a large specific surface area, which can further adsorb sodium carboxymethyl cellulose solution, achieving stable adhesion while accelerating crystal formation, thereby improving the quality of palm oil.

[0023] Preferably, the emulsifier is composed of citrate, trioleic acid glyceride and sucrose ester in a mass ratio of 1:1-3:1-2.

[0024] By employing the above technical solution, citrate, trioleic acid ester, and sucrose ester are combined in a liquid phase. The ester groups in citrate and sucrose ester facilitate interaction with fatty acid molecules in palm oil, serving as the starting point for crystallization and forming crystal nuclei. The hydrophilic and hydrophobic groups in the sucrose ester solution readily adsorb onto the surface of the crystal nuclei and form a protective layer around them. Furthermore, the high similarity between trioleic acid ester and palm oil molecular structures allows it to easily penetrate into the palm oil molecules during crystallization, accelerating the process. Trioleic acid ester also induces crystallization, while the hydrophilic groups in both trioleic acid ester and sucrose ester act as guides, regulating the arrangement of palm oil molecules. This adjusts the crystallization rate and morphology, ensuring uniform crystallization and improving the quality of palm oil.

[0025] Preferably, the catalyst is formic acid.

[0026] By adopting the above technical solution, formic acid can catalyze the molecular arrangement and crystallization of palm oil, reduce the crystallization barrier, and increase the crystallization rate.

[0027] Preferably, the frequency of ultrasonic dispersion in S1 is 20-40 kHz.

[0028] By adopting the above technical solution, the frequency of ultrasonic dispersion is limited to low-frequency processing, which ensures that the original crystal memory network is destroyed while maintaining the structural stability of the ester-modified whiskers as much as possible.

[0029] Preferably, the cooling rate of S3 is 1-3℃ / min.

[0030] By adopting the above technical solution, the cooling rate is limited to ensure the formation of crystals, and the stability and uniformity of the crystals are guaranteed.

[0031] Preferably, the inducing agent is polyethylene glycol.

[0032] By adopting the above technical solution, the oxygen atoms and hydroxyl functional groups on the polyethylene glycol molecular chain may interact with the ester groups or fatty acid chains in the palm oil molecules, which helps the palm oil molecules to arrange themselves in an orderly manner during the crystallization process and accelerates crystal formation.

[0033] Preferably, the frequency of the S3 ultrasonic dispersion is 40-60kHz.

[0034] By adopting the above technical solution, a higher ultrasonic dispersion frequency is achieved, ensuring uniform crystallization while promoting crystal formation.

[0035] In summary, this application has the following beneficial effects:

[0036] 1. Adding ester-modified whiskers to palm oil utilizes ultrasonic dispersion and the cutting effect of ester-modified whiskers to facilitate the elimination of crystallization memory. Combined with emulsifiers, catalysts, and inducers, it promotes the formation of finer and more uniform crystalline structures in palm oil, thereby improving the quality of palm oil and enabling it to be used in the processing of high-quality plastics.

[0037] 2. Utilizing the binding effect of sodium carboxymethyl cellulose solution, cellulose acetate butyrate is adhered to the surface of porous hydroxyapatite whiskers. The lipophilic effect of cellulose acetate butyrate facilitates its attraction and contact with palm oil, allowing the porous hydroxyapatite whiskers to penetrate the palm oil crystalline structure. The cutting effect of the whiskers and the flow-conducting effect of the porous structure, under ultrasonic conditions, can promote the rapid dispersion of the palm oil crystalline network, achieving rapid elimination of crystalline memory. The sodium carboxymethyl cellulose solution is insoluble in oil, ensuring relatively stable adhesion of cellulose acetate butyrate to the surface of the porous hydroxyapatite whiskers, thus guaranteeing the disruption of the crystalline network. Combined with subsequent treatment with emulsifiers, catalysts, and inducers, this promotes rapid palm oil crystallization, ensuring the quality of the palm oil.

[0038] 3. The liquid phase combination of citrate, trioleic acid ester, and sucrose ester utilizes the ester groups in citrate to interact with the fatty acid molecules in palm oil, serving as the starting point for crystallization and forming crystal nuclei. The hydrophilic and hydrophobic groups in the sucrose ester solution readily adsorb onto the surface of the crystal nuclei and form a protective layer around them. Furthermore, the high similarity between trioleic acid ester and palm oil molecular structure allows for easy penetration into the palm oil molecules during crystallization, accelerating the process. Trioleic acid ester also acts as an inducing agent, while the hydrophilic groups in both trioleic acid ester and sucrose ester guide the arrangement of palm oil molecules, thereby adjusting the crystallization rate and morphology, ensuring uniform crystallization, and resulting in high-quality palm oil. Detailed Implementation

[0039] The present application will be further described in detail below with reference to the embodiments.

[0040] Preparation example of ester-modified whiskers

[0041] Cellulose acetate butyrate in the following raw materials was purchased from Hubei Watson Chemical Technology Co., Ltd.; other raw materials are commercially available.

[0042] Preparation Example 1: Ester-modified whiskers were prepared by the following method:

[0043] 1.5 kg of carboxymethyl cellulose solution was uniformly sprayed onto the surface of 5 kg of porous hydroxyapatite whiskers, and then 1 kg of cellulose acetate butyrate was added at a rate of 30 g / min. During the addition process, the porous hydroxyapatite whiskers were stirred at a speed of 120 r / min. After uniform mixing, ester-modified whiskers were obtained. The average length of the porous hydroxyapatite whiskers was 100 μm, the average diameter was 20 nm, the average particle size of the cellulose acetate butyrate was 4 μm, and the sodium carboxymethyl cellulose solution was a 2% (w / w) aqueous solution of sodium carboxymethyl cellulose with a molecular weight of 300,000.

[0044] Preparation Example 2: The difference between this preparation example and Preparation Example 1 is that:

[0045] 1 kg of carboxymethyl cellulose solution was uniformly sprayed onto the surface of 3 kg of porous hydroxyapatite whiskers, and then 1 kg of cellulose acetate butyrate was added at a rate of 30 g / min. During the addition process, the porous hydroxyapatite whiskers were stirred at a speed of 120 r / min. After uniform mixing, ester-modified whiskers were obtained. The average length of the porous hydroxyapatite whiskers was 80 μm, the average diameter was 20 nm, the average particle size of the cellulose acetate butyrate was 3 μm, and the sodium carboxymethyl cellulose solution was a 1% (w / w) aqueous solution of sodium carboxymethyl cellulose with a molecular weight of 200,000.

[0046] Preparation Example 3: The difference between this preparation example and Preparation Example 1 is that:

[0047] 2 kg of carboxymethyl cellulose solution was uniformly sprayed onto the surface of 8 kg of porous hydroxyapatite whiskers, and then 1 kg of cellulose acetate butyrate was added at a rate of 30 g / min. During the addition process, the porous hydroxyapatite whiskers were stirred at a speed of 120 r / min. After uniform mixing, ester-modified whiskers were obtained. The average length of the porous hydroxyapatite whiskers was 150 μm, the average diameter was 20 nm, the average particle size of the cellulose acetate butyrate was 5 μm, and the sodium carboxymethyl cellulose solution was a 3% (w / w) aqueous solution of sodium carboxymethyl cellulose with a molecular weight of 400,000.

[0048] Example

[0049] The following raw materials were purchased from Wuhan Shuer Biotechnology Co., Ltd., liquid, model 6619; trioleic acid glyceride was purchased from Jiangsu Renn Environmental Protection Technology Co., Ltd., liquid; sucrose monostearate was purchased from Nantong Runfeng Petrochemical Co., Ltd.; other raw materials were commercially available.

[0050] Example 1: A processing method for a lubricating and dispersing agent for plastic processing:

[0051] S1. Add 4 kg of ester-modified whiskers to 100 kg of palm oil. The ester-modified whiskers are selected from those prepared in Preparation Example 1. Disperse the mixture ultrasonically at 55°C for 3 min at a frequency of 30 kHz. Filter out the ester-modified whiskers to obtain pretreated palm oil.

[0052] S2. Add 2 kg of emulsifier and 0.8 kg of catalyst to 100 kg of pretreated palm oil. The emulsifier consists of citrate, trioleic acid glyceride and sucrose ester solution in a mass ratio of 1:1.8:1.2. The sucrose ester solution is a mixture of 10% sucrose monostearate and ethanol, with an ethanol mass fraction of 99%. The catalyst is formic acid with a formic acid concentration of 90%. Maintain the temperature at 55°C and mix and stir at 200 r / min for 5 min. After mixing and stirring evenly, a mixture is obtained.

[0053] S3. The mixture is cooled to 18°C ​​at a cooling rate of 2°C / min. During the cooling process, 0.8 kg of inducing agent (polyethylene glycol 800) is added to 100 kg of the mixture. Ultrasonic dispersion is carried out simultaneously during the cooling process. After cooling, ultrasonic dispersion is performed for 40 s at a frequency of 50 kHz to obtain a semi-finished product. The semi-finished product is then separated, packaged, and stored to obtain palm oil.

[0054] Example 2: The difference between this example and Example 1 is that:

[0055] S1. Add 3 kg of ester-modified whiskers to 100 kg of palm oil. The ester-modified whiskers are selected from those prepared in Preparation Example 2. Disperse the mixture ultrasonically at 50°C for 4 min at a frequency of 20 kHz. Filter out the ester-modified whiskers to obtain pretreated palm oil.

[0056] S2. Add 1 kg of emulsifier and 0.5 kg of catalyst to 100 kg of pretreated palm oil. The emulsifier is composed of citrate, trioleic acid glyceride and sucrose ester solution in a mass ratio of 1:1:1. The catalyst is formic acid with a concentration of 90%. Maintain the temperature at 50°C and mix and stir at 200 r / min for 5 min. After mixing and stirring evenly, a mixture is obtained.

[0057] S3. The mixture is cooled to 20°C at a cooling rate of 1°C / min. During the cooling process, 0.5 kg of inducing agent is added to 100 kg of the mixture. The inducing agent is polyethylene glycol, and the polyethylene glycol is polyethylene glycol 800. During the cooling process, ultrasonic dispersion is carried out for 30 s at a frequency of 60 kHz to obtain a semi-finished product. The semi-finished product is separated, packaged, and stored to obtain palm oil.

[0058] Example 3: The difference between this example and Example 1 is that:

[0059] S1. Add 5 kg of ester-modified whiskers to 100 kg of palm oil. The ester-modified whiskers are selected from those prepared in Preparation Example 3. Disperse the mixture ultrasonically at 58°C for 2 min at a frequency of 40 kHz. Filter out the ester-modified whiskers to obtain pretreated palm oil.

[0060] S2. Add 3 kg of emulsifier and 1 kg of catalyst to 100 kg of pretreated palm oil. The emulsifier is composed of citrate, trioleic acid glyceride and sucrose ester solution in a mass ratio of 1:3:2. The catalyst is formic acid with a concentration of 90%. Maintain the temperature at 58°C and mix and stir at 200 r / min for 5 min. After mixing and stirring evenly, a mixture is obtained.

[0061] S3. The mixture is cooled to 15°C at a cooling rate of 3°C / min. During the cooling process, 1 kg of inducing agent is added to 100 kg of the mixture. The inducing agent is polyethylene glycol, and the polyethylene glycol is polyethylene glycol 800. During the cooling process, ultrasonic dispersion is carried out for 60 s at a frequency of 40 kHz to obtain a semi-finished product. The semi-finished product is separated, packaged, and stored to obtain palm oil.

[0062] Example 4: The difference between this example and Example 1 is that:

[0063] Ester-modified whiskers were prepared using the following method:

[0064] 1 kg of cellulose acetate butyrate was heated to 150°C and then uniformly sprayed onto the surface of 5 kg of porous hydroxyapatite whiskers to obtain ester-modified whiskers.

[0065] Example 4: The difference between this example and Example 1 is that:

[0066] No citrate or sucrose ester solution was added to the emulsifier.

[0067] Comparative Example

[0068] Comparative Example 1: The difference between this comparative example and Example 1 is that:

[0069] No ester-modified whiskers were added in S1.

[0070] Comparative Example 2: This comparative example differs from Example 1 in that:

[0071] In S1, porous hydroxyapatite whiskers are replaced with silica whiskers of equal mass.

[0072] Comparative Example 3: This comparative example differs from Example 1 in that:

[0073] In S1, ultrasonic dispersion is carried out at 80℃ for 10 minutes, and in S2, stirring is carried out at 80℃ for 20 minutes.

[0074] Comparative Example 4: This comparative example differs from Example 1 in that:

[0075] No catalyst was added to S2.

[0076] Comparative Example 5: This comparative example differs from Example 1 in that:

[0077] No inducing agent was added to S3.

[0078] Performance testing

[0079] 1. Crystallization rate detection

[0080] The finished products were prepared using the methods of Examples 1-5 and Comparative Examples 1-2 and 4-5, respectively. Each finished product was used as a sample. 3 mL of the sample was transferred into a dedicated NMR glass tube, and the solid fat content was measured every 30 seconds using a benchtop NMR spectrometer. After preheating the coverslip and slide in a 30°C incubator for 30 min, the samples were prepared separately and then placed in a 4°C incubator for 12 h for microscopic observation of the crystal structure. The crystallization kinetic constant was analyzed using the Avrami equation, and the obtained crystallization rate constant k value was recorded. A larger k value indicates a faster crystallization rate, a larger amount of crystals, and a smaller crystal size.

[0081] 2. Antioxidant test

[0082] The finished products were prepared using the methods of Examples 1-3 and Comparative Example 3, respectively. The peroxide value of the palm oil was tested according to GB / T15680-2009, and the data were recorded.

[0083] Table 1 Performance Test Table (In the table, " / " indicates that the corresponding embodiment or comparative example did not test this item, so there is no data)

[0084]

[0085]

[0086] As can be seen from Examples 1-3 and Table 1, the palm oil prepared in this application has a large k value, indicating that it has the advantages of rapid crystallization and small crystal particle size. In addition, the peroxide value is low, indicating that the palm oil is not easily oxidized during the preparation process, thus giving the palm oil a better quality.

[0087] Combining Examples 1 and 4-5 with Table 1, it can be seen that no sodium carboxymethyl cellulose aqueous solution was added during the preparation of ester-modified whiskers in Example 4. Compared with Example 1, the k value of the palm oil prepared in Example 4 is smaller than that in Example 1. This indicates that the presence of sodium carboxymethyl cellulose can guide crystal growth, promote the orderly arrangement of fatty acid molecules in palm oil, and promote crystallization, thereby enabling the palm oil to have a rapid crystallization effect during the preparation process.

[0088] In Example 5, no citrate ester or sucrose ester solution was added to the emulsifier. Compared to Example 1, the k-value of the palm oil prepared in Example 4 was lower than that in Example 1. This indicates that the ester groups in citrate ester and sucrose ester facilitate interaction with fatty acid molecules in palm oil, serving as the starting point for crystallization and forming crystal nuclei. The hydrophilic and hydrophobic groups in sucrose ester solution are easily adsorbed onto the surface of the crystal nuclei and can form a protective layer around them. At the same time, the hydrophilic groups in trioleic acid ester and sucrose ester can act as guides, regulating the arrangement of palm oil molecules, thereby adjusting the crystallization rate and morphology, ensuring uniform crystallization, and giving the palm oil higher quality.

[0089] Combining Example 1 and Comparative Examples 1-5 with Table 1, it can be seen that Comparative Example 1S1, which did not add ester-modified whiskers, had a lower k-value for palm oil compared to Example 1. This indicates that the ester groups on the surface of the ester-modified whiskers attract the lipophilic groups in the palm oil, facilitating the attraction of the ester-modified whiskers to the crystalline structure composed of fatty acid glycerides in the palm oil. The penetrating effect of the porous hydroxyapatite whiskers, combined with ultrasonic dispersion, allows the whiskers to easily cut the crystalline structure of the fatty acid molecular chains, quickly eliminating crystal memory. With the addition of emulsifiers, catalysts, and inducers, the palm oil rapidly forms a finer and more uniform crystalline structure, improving the quality of the palm oil.

[0090] In Comparative Example 2S1, porous hydroxyapatite whiskers were replaced with silica whiskers of the same mass. Compared with Example 1, the k-value of the palm oil prepared in Comparative Example 2 was smaller than that in Example 1. This indicates that ordinary silica whiskers do not have cellulose acetate butyrate loaded on their surface, making it difficult for silica whiskers to attract and adhere to the fatty acid molecular network of palm oil. They rely solely on the agitation effect of ultrasonic dispersion. Compared with the ultrasonic cutting effect of cellulose acetate butyrate adhering to the surface of porous hydroxyapatite whiskers, the effect is worse, thus affecting the crystallization rate, crystal size, and crystal uniformity.

[0091] In Comparative Example 3, the palm oil prepared by ultrasonic dispersion at 80°C for 10 min was compared with that prepared by stirring at 80°C for 20 min in S2. The peroxide value of the palm oil prepared by Comparative Example 3 was greater than that of Example 1. This indicates that ultrasonic dispersion at high temperature for a longer time, and stirring at high temperature for a longer time, makes it easier for the palm oil to come into contact with oxygen over a large area during ultrasonic dispersion and stirring, which makes the palm oil more susceptible to oxidation and thus affects the quality of the palm oil.

[0092] No catalyst was added in Comparative Example 4S2. Compared with Example 1, the k-value of the palm oil prepared in Comparative Example 4 was smaller than that in Example 1. This indicates that formic acid can catalyze the molecular arrangement and crystallization of palm oil, provide a starting point and direction for crystallization, reduce the crystallization barrier, and increase the crystallization rate.

[0093] No inducing agent was added in Comparative Example 5S3. Compared with Example 1, the k value of the palm oil prepared in Comparative Example 5 was smaller than that in Example 1. This indicates that the oxygen atoms and hydroxyl functional groups on the polyethylene glycol molecular chain may interact with the ester groups or fatty acid chains in the palm oil molecules, which helps the palm oil molecules to arrange themselves in an orderly manner during the crystallization process and accelerates crystal formation.

[0094] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A processing method for a lubricating and dispersing agent for plastic processing, characterized in that, Includes the following steps: S1. Add ester-modified whiskers to palm oil at a mass ratio of 100:3-5, ultrasonically disperse at 50-58℃ for 2-4 min, filter out the ester-modified whiskers, and obtain pretreated palm oil; the ester-modified whiskers are prepared from a solution of cellulose acetate butyrate, sodium carboxymethyl cellulose, and porous hydroxyapatite whiskers at a mass ratio of 1:1-2:3-8. S2. Add emulsifier and catalyst to pretreated palm oil at a mass ratio of 100:1-3:0.5-1, and mix and stir at 50-58℃ to obtain a mixture; the emulsifier is composed of citrate, trioleic acid glyceride and sucrose ester solution at a mass ratio of 1:1-3:1-2; the catalyst is formic acid; S3. Cool the mixture to 15-20℃. During the cooling process, add an inducing agent, which is polyethylene glycol. The mass ratio of the mixture to the inducing agent is 100:0.5-1. After cooling, ultrasonically disperse for 30-60 seconds to obtain a semi-finished product. The semi-finished product is then separated, packaged, and stored to obtain palm oil.

2. The processing method of a lubricating and dispersing agent for plastic processing according to claim 1, characterized in that, The average particle size of the cellulose acetate butyrate is 3-5 μm, and the average length of the porous hydroxyapatite whiskers is 80-150 μm.

3. The processing method of a lubricating and dispersing agent for plastic processing according to claim 1, characterized in that, The frequency of ultrasonic dispersion in S1 is 20-40kHz.

4. The processing method of a lubricating and dispersing agent for plastic processing according to claim 1, characterized in that, The cooling rate of S3 is 1-3℃ / min.

5. The processing method of a lubricating and dispersing agent for plastic processing according to claim 1, characterized in that, The frequency of the S3 ultrasonic dispersion is 40-60kHz.

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