Weather-resistant and corrosion-resistant protective wax as well as preparation method and application thereof

Abstract

The invention provides weather-resistant and corrosion-resistant protective wax as well as a preparation method and application thereof. The weather-resistant and corrosion-resistant protective wax is prepared from the following components in parts by weight: 5 to 20 parts of waxy material, 30 to 50 parts of solvent oil, 5 to 10 parts of antirust agent, 5 to 10 parts of antirust filler, 5 to 20 parts of resin material, 10 to 20 parts of anti-settling agent, 0.1 to 1 part of antioxidant and 0.1 to 1 part of light stabilizer. The weather-resistant and corrosion-resistant protective wax provided by the invention is not easy to photodegrade under ultraviolet irradiation, has higher powdering resistance and shedding resistance, excellent weather resistance and corrosion resistance, and is good in anti-settling effect and high in stability.

Description

Technical Field

[0001] This invention belongs to the field of automotive anti-corrosion coating technology, specifically relating to a weather-resistant and corrosion-resistant protective wax, its preparation method, and its application. Background Technology

[0002] With the continuous development of the automotive industry, the export volume of commercial vehicles has increased significantly, and the export markets have become more diversified, expanding from traditional Asia, Africa, and Latin America to more mature markets such as Europe. Commercial vehicle exports often use ocean transportation, but the marine environment is complex and harsh, which places higher demands on the weather resistance, corrosion resistance, and rust prevention performance of exported commercial vehicles, especially in areas such as the vehicle frame.

[0003] Currently, many commercial vehicles undergo a long storage and transportation process before entering modification plants after leaving the factory. During this period, the vehicles are exposed to environmental conditions such as wind, sun, and rain, especially in high temperature and high humidity environments, leading to chassis corrosion in a short time. Furthermore, during the ocean transport of exported commercial vehicles, the high humidity significantly increases the electrochemical corrosion rate of iron-based metals, noticeably accelerating chassis corrosion. The presence of SO2 and Cl in the marine atmosphere further exacerbates this problem. - High concentrations of certain substances can easily lead to corrosive acid mist or acid rain. Strong ultraviolet radiation during the day and large temperature differences between day and night also accelerate corrosion to some extent. Because chassis components such as the frame are constantly exposed to sunlight, single-layer epoxy cathodic electrophoretic paints have poor weather resistance, resulting in accelerated aging of the paint film, chalking, peeling, and loss of gloss, which can severely damage the chassis in severe cases. In harsh environments such as high latitudes, changes in ambient temperature, humidity, and salinity, as well as the use of de-icing agents in winter, can severely corrode metal components of the vehicle chassis, seriously threatening driving safety.

[0004] Therefore, how to provide a car protection product with good weather resistance and corrosion resistance has become an urgent problem to be solved. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a weather-resistant and corrosion-resistant protective wax, its preparation method, and its applications. The weather-resistant and corrosion-resistant protective wax provided by this invention is not easily photodegraded under ultraviolet irradiation, possesses stronger resistance to chalking and peeling, excellent weather resistance and corrosion resistance, good anti-settling effect, and high stability.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a weather-resistant and corrosion-resistant protective wax, wherein the weather-resistant and corrosion-resistant protective wax comprises, by weight, 5-20 parts of wax material, 30-50 parts of solvent oil, 5-10 parts of rust inhibitor, 5-10 parts of rust-inhibiting filler, 5-20 parts of resin material, 10-20 parts of anti-settling agent, 0.1-1 parts of antioxidant and 0.1-1 parts of light stabilizer.

[0008] The components of the wax material can be 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 parts, the solvent oil can be 30, 35, 40, 45, or 50 parts, the rust inhibitor can be 5, 6, 7, 8, 9, or 10 parts, the rust-inhibiting filler can be 5, 6, 7, 8, 9, or 10 parts, and the resin material can be 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, or 17 parts. The quantities of antisettling agent can be 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 parts, etc.; the quantities of antioxidant agent can be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, or 1 part, etc.; and the quantities of light stabilizer can be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, or 1 part, etc., but are not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0009] The above products use waxy materials combined with rust inhibitors and rust-preventive fillers, which enables the products to have excellent corrosion resistance, are not easily photodegraded under ultraviolet radiation, have stronger anti-powdering and anti-detachment capabilities, excellent weather resistance and corrosion resistance, good anti-settling effect and high stability.

[0010] Preferably, the wax material includes any one or a combination of at least two of microcrystalline wax, modified beeswax, modified polyethylene wax, or highly refined paraffin wax, with microcrystalline wax being the most preferred.

[0011] As a key component, waxy materials can form a dense film in a short time, which can shield the environment and the chassis metal substrate, and improve the water resistance of the system.

[0012] Preferably, the rust inhibitor comprises any one or a combination of at least two of N-oleoylsarcosine-octadecylamine salt, lanolin, barium petroleum ester soap, high-alkalinity calcium petroleum sulfonate, or neutral barium sulfonate, with high-alkalinity calcium petroleum sulfonate and neutral barium sulfonate being preferred.

[0013] Preferably, the rust-preventive filler includes any one or a combination of at least two of barium sulfate, calcium carbonate, talc, zinc oxide, aluminum tripolyphosphate, or zinc aluminum orthophosphate, with a preferred combination of barium sulfate, aluminum tripolyphosphate, and zinc oxide.

[0014] The aforementioned specific waxy materials, combined with rust inhibitors and rust-inhibiting fillers, work synergistically to effectively improve the product's corrosion resistance; furthermore, the aforementioned specific rust-inhibiting filler combination can further enhance the product's effectiveness.

[0015] Preferably, the resin material includes petroleum resin and / or epoxy resin, and more preferably a fully hydrogenated monomer resin.

[0016] Preferably, the anti-settling agent comprises organobentonite (e.g., BYK MP100) and / or Walker VOK-34C, with organobentonite being preferred.

[0017] As a multiphase system, the wax liquid system is thermodynamically unstable. Due to gravity, pigments and fillers in the wax liquid precipitate, leading to stratification. Considering rheological properties and the performance of the wax liquid, it is essential to improve the thixotropy and stability of the system. This invention selects thixotropic organic bentonite and activates it, enabling it to swell in the product system and form hydrogen bonds using the -OH groups at its edges, thus generating a certain degree of thixotropy and achieving an anti-settling effect.

[0018] Preferably, the antioxidant comprises BASF 225 and / or BYK B900, with BASF 225 being more preferred.

[0019] Preferably, the light stabilizer comprises BASF 292 and / or BASF 770, with BASF 770 being more preferred.

[0020] Secondly, the present invention provides a method for preparing the weather-resistant and corrosion-resistant protective wax as described above, the method comprising the following steps:

[0021] The wax material, resin material, and rust inhibitor are mixed and heated, then mixed with solvent oil and anti-settling agent to obtain a gel. Finally, it is mixed with rust-inhibiting filler, antioxidant and light stabilizer to obtain the weather-resistant and corrosion-resistant protective wax.

[0022] Preferably, the specific steps of mixing with solvent oil and anti-settling agent are as follows:

[0023] The anti-settling agent is heated, then mixed and stirred with a mixture of solvent oil and ethanol, and heated. Ethanol is added intermittently, and the mixture is ultrasonicated. Then, the rotation speed is increased to perform colloid milling. The processed material is then mixed with wax material, resin material, and rust inhibitor.

[0024] Compared to basic activation methods, the above method addresses the problems of incomplete activation and poor stability in traditional processes through staged media regulation, gradient force field dispersion, and synergistic interface modification. The core of the method revolves around a four-step process of "penetration-swelling-stripping-stabilization." The baking process breaks down the adsorbed water bound by weak hydrogen bonds between the anti-settling agent layers, while simultaneously activating the hydrophobic activity of the organic modified groups (if the raw material has hard agglomerates, a secondary pulverization using an air jet mill (particle size controlled at 5~10μm) is used to avoid the pseudo-activation phenomenon of "shell dissolution, internal inactivation" in agglomerates). The solvent oil and ethanol are mixed in advance to form a solvent oil and ethanol mixture (treated in an ultrasonic cleaner (power 200W, frequency 40kHz) for 15 minutes, allowing ethanol to form a microemulsion dispersion in the oil phase), preventing subsequent localized ethanol buildup. Excessive solvent oil leads to system stratification. The non-polar permeation of the solvent oil fills the gaps between the anti-settling agent aggregates, while ethanol microspheres simultaneously penetrate to the edges of the layers, initially weakening the van der Waals forces between the layers and forming a "loose aggregate suspension," unlike the localized overheating caused by direct high-shear crushing in traditional methods. Intermittent ethanol replenishment utilizes the polar synergistic effect of ethanol to continuously disrupt the cationic bridges between the layers, assisting the solvent oil to penetrate deeper into the layers and promoting the transformation of the anti-settling agent from "loose agglomeration" to "initial layer expansion." The ultrasonic process utilizes the ultrasonic cavitation effect to break the residual hydrogen bonds between the layers, promoting swelling uniformity—a crucial step not addressed in traditional processes. The colloid mill cycle treatment allows the system to undergo high-pressure shearing and grinding, completely peeling the initially expanded layers into single-piece or aggregated pieces.

[0025] Preferably, the baking temperature is 80-100℃ and the time is 2-3 hours. The temperature can be 80℃, 85℃, 90℃, 95℃ or 100℃, etc., and the time can be 2 hours, 2.1 hours, 2.2 hours, 2.3 hours, 2.4 hours, 2.5 hours, 2.6 hours, 2.7 hours, 2.8 hours, 2.9 hours or 3 hours, etc., but is not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0026] Preferably, the mass ratio of the anti-settling agent, solvent oil and ethanol is (8-14):(60-92):(2-4).

[0027] Preferably, the mixing and stirring rate is 200-800 r / min, such as 200 r / min, 300 r / min, 400 r / min, 500 r / min, 600 r / min, 700 r / min or 800 r / min, but is not limited to the values ​​listed above. Other values ​​not listed in the above range are also applicable.

[0028] Preferably, the heating rate is 0.8-1.2℃ / min, and the temperature is increased to 45-55℃.

[0029] Preferably, the intermittent ethanol replenishment specifically involves replenishing ethanol every 12-18 minutes, in three separate additions, with the total ethanol replenishment amount being 10-15% of the initial ethanol addition amount.

[0030] Preferably, the speed is increased to 1500-2000 r / min, such as 1500 r / min, 1600 r / min, 1700 r / min, 1800 r / min, 1900 r / min or 2000 r / min, but not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0031] The aforementioned specific activation process can induce a certain degree of thixotropy in the filler, thereby achieving an anti-settling effect.

[0032] Thirdly, the present invention also provides the application of the weather-resistant and corrosion-resistant protective wax described above in the preparation of automotive protective wax.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] This invention provides a weather-resistant and corrosion-resistant protective wax. By using wax materials combined with rust inhibitors and rust-inhibiting fillers, the product can have excellent corrosion resistance, is not easily photodegraded under ultraviolet radiation, has stronger anti-powdering and anti-stripping capabilities, excellent weather resistance and corrosion resistance, good anti-settling effect, and high stability. Detailed Implementation

[0035] To further illustrate the technical means and effects of the present invention, the following describes the technical solution of the present invention in conjunction with preferred embodiments of the present invention. However, the present invention is not limited to the scope of the embodiments.

[0036] In the following examples, the microcrystalline wax was purchased from Panjin Northern Asphalt Fuel Co., Ltd.

[0037] The modified polyethylene wax was purchased from Nanjing Runyou Chemical Additives Co., Ltd.

[0038] Modified beeswax was purchased from Panjin Northern Asphalt Fuel Co., Ltd.

[0039] Lanolin was purchased from Shanghai Demao Chemical Co., Ltd.

[0040] Solvent oil D60 was purchased from Changzhou Heshili Chemical Co., Ltd.;

[0041] Barium sulfonate was purchased from Shanghai Yongyan Chemical Technology Co., Ltd.

[0042] High-alkalinity calcium petroleum sulfonate was purchased from Shanghai Yongyan Chemical Technology Co., Ltd.

[0043] The fully hydrogenated monomer resin was purchased from Liten Chemical (Wuxi) Co., Ltd.;

[0044] Aluminum tripolyphosphate was purchased from Hubei Huada Fine Chemical Co., Ltd.

[0045] Organic bentonite (BYK MP100) was purchased from Zhejiang Fenghong New Material Co., Ltd.

[0046] BASF 225 was purchased from Guangdong Boruida Polymer Technology Co., Ltd.;

[0047] The BASF 770 was purchased from Guangdong Boruida Polymer Technology Co., Ltd.

[0048] Example 1

[0049] This embodiment provides a weather-resistant and corrosion-resistant protective wax, prepared from the following raw materials (in parts by weight):

[0050] 12 parts wax material (microcrystalline wax), 40 parts solvent oil (solvent oil D60), 7 parts rust inhibitor (high base value petroleum sulfonate calcium, neutral barium sulfonate, mass ratio 1:1), 7 parts rust inhibitor filler (barium sulfate, aluminum tripolyphosphate and zinc oxide, mass ratio 2:1:1), 15 parts resin material (fully hydrogenated monomer resin), 15 parts anti-settling agent (organo-bentonite BYK MP100), 0.5 parts antioxidant (BASF 225), 0.5 parts light stabilizer (BASF 770).

[0051] The preparation method is as follows:

[0052] First, add the wax material, resin material, and rust inhibitor into the reaction vessel, heat it to 110℃, and stop heating after stirring and mixing evenly.

[0053] Precisely proportion the following ratio by mass: Organic bentonite: D60 solvent oil: ethanol = 12:80:3; Place the organic bentonite in a 90℃ vacuum oven for 2.5 hours; Mix the D60 solvent oil and ethanol beforehand, and treat them in an ultrasonic cleaner (200W power, 40kHz frequency) for 15 minutes to allow the ethanol to form a microemulsion dispersion (particle size ≤500nm) in the oil phase; Inject the premixed D60-ethanol system into the preheated reactor, and start the anchor stirring (200r / min) to maintain the laminar flow state of the system; Add the heated organic bentonite using a "spiral feeding" method (slowly rotating and feeding along the reactor wall). Bentonite was continuously stirred under low shear for 20 minutes; the heating rate was controlled at 1℃ / min, slowly increasing to 50℃, while switching the stirring mode to "anchor + dispersion disc composite stirring", and increasing the speed to 800 r / min; ethanol was added every 15 minutes during the process (the total amount added was 13% of the initial ethanol), added in three batches; the ultrasonic probe inside the cup was turned on at 50℃ and continued for 10 minutes; the temperature was maintained between 50 and 55℃, the stirring speed was increased to 1800 r / min, and the colloid mill was started for circulation treatment (the gap was adjusted to between 50 and 100 μm); the obtained material was added to the above reaction vessel and stirred for 10 minutes.

[0054] After cooling to below 90°C, add rust-inhibiting filler, mix evenly, then cool to 60°C and add the remaining raw materials. Stir and mix until uniform, grind and remove from the container to obtain the weather-resistant and corrosion-resistant protective wax.

[0055] Example 2

[0056] This embodiment provides a weather-resistant and corrosion-resistant protective wax, prepared from the following raw materials (in parts by weight):

[0057] 5 parts wax material (modified polyethylene wax), 30 parts solvent oil (solvent oil D60), 5 parts rust inhibitor (high base value petroleum sulfonate calcium, neutral barium sulfonate, mass ratio 1:1), 5 parts rust inhibitor filler (barium sulfate), 5 parts resin material (fully hydrogenated monomer resin), 10 parts anti-settling agent (organo-bentonite BYK MP100), 0.1 part antioxidant (BASF 225), 0.1 part light stabilizer (BASF 292).

[0058] The preparation method is as follows:

[0059] First, add the wax material, resin material, and rust inhibitor into the reaction vessel, heat it to 100°C, and stop heating after stirring and mixing evenly.

[0060] Precisely proportion the following ratio by mass: Organic bentonite: D60 solvent oil: ethanol = 8:60:2; Place the organic bentonite in an 80℃ vacuum oven for 3 hours; Mix the D60 solvent oil and ethanol beforehand, and treat them in an ultrasonic cleaner (200W power, 40kHz frequency) for 15 minutes to allow the ethanol to form a microemulsion dispersion (particle size ≤500nm) in the oil phase; Inject the premixed D60-ethanol system into the preheated reactor, and start the anchor stirring (200r / min) to maintain the laminar flow state of the system; Add the heated organic bentonite using a "spiral feeding" method (slowly rotating and feeding along the reactor wall). The mixture was continuously stirred at low shear for 20 minutes; the heating rate was controlled at 0.8℃ / min, slowly increasing to 45℃, while switching the stirring mode to "anchor + dispersion disc composite stirring" and increasing the speed to 800 r / min; ethanol was added every 15 minutes during the process (the total amount added was 10% of the initial ethanol), added in three batches; the ultrasonic probe inside the cup was turned on at 45℃ and continued for 10 minutes; the temperature was maintained between 50 and 55℃, the stirring speed was increased to 1500 r / min, and the colloid mill was started for circulation treatment (the gap was adjusted to between 50 and 100 μm); the obtained material was added to the above reaction vessel and stirred for 10 minutes.

[0061] After cooling to below 90°C, add rust-inhibiting filler, mix evenly, then cool to 60°C and add the remaining raw materials. Stir and mix until uniform, grind and remove from the container to obtain the weather-resistant and corrosion-resistant protective wax.

[0062] Example 3

[0063] This embodiment provides a weather-resistant and corrosion-resistant protective wax, prepared from the following raw materials (in parts by weight):

[0064] 20 parts wax material (modified beeswax), 50 parts solvent oil (solvent oil D60), 10 parts rust inhibitor (calcium petroleum sulfonate), 10 parts rust inhibitor filler (aluminum tripolyphosphate), 20 parts resin material (fully hydrogenated monomer resin), 20 parts anti-settling agent (organo-bentonite BYK MP100), 1 part antioxidant (BASF 225), 1 part light stabilizer (BASF 770).

[0065] The preparation method is as follows:

[0066] First, add the wax material, resin material, and rust inhibitor into the reaction vessel, heat it to 120°C, and stop heating after stirring and mixing evenly.

[0067] Precisely proportion the organic bentonite: D60 solvent oil: ethanol = 14:92:4 by mass. Place the organic bentonite in a 100℃ vacuum oven for 2 hours. Mix the D60 solvent oil and ethanol beforehand and treat in an ultrasonic cleaner (200W, 40kHz) for 15 minutes to allow the ethanol to form a microemulsion dispersion (particle size ≤500nm) in the oil phase. Inject the premixed D60-ethanol system into a preheated reactor and start the anchor stirring (200r / min) to maintain laminar flow. Add the heated organic bentonite using a spiral feeding method (slowly rotating and feeding along the reactor wall). The mixture was moistened and stirred under low shear for 20 minutes. The heating rate was controlled at 1.2℃ / min, slowly increasing to 55℃, while switching the stirring mode to "anchor + dispersion disc composite stirring" and increasing the speed to 800 r / min. Ethanol was added every 15 minutes during the process (the total amount added was 15% of the initial ethanol), added in three batches. The ultrasonic probe inside the vessel was turned on at 50℃ and kept for 10 minutes. The temperature was maintained between 50 and 55℃, and the stirring speed was increased to 2000 r / min. The colloid mill was started for circulation treatment (the gap was adjusted to between 50 and 100 μm). The resulting material was added to the above reaction vessel and stirred for 10 minutes.

[0068] After cooling to below 90°C, add rust-inhibiting filler, mix evenly, then cool to 60°C and add the remaining raw materials. Stir and mix until uniform, grind and remove from the container to obtain the weather-resistant and corrosion-resistant protective wax.

[0069] Example 4

[0070] This embodiment provides a weather-resistant and corrosion-resistant protective wax. The raw materials used in its preparation are the same as in Example 1, except that high-alkalinity calcium petroleum sulfonate is replaced with an equal amount of neutral barium sulfonate.

[0071] The preparation method is the same as in Example 1.

[0072] Example 5

[0073] This embodiment provides a weather-resistant and corrosion-resistant protective wax. The raw materials used in its preparation are the same as in Example 1, except that neutral barium sulfonate is replaced with an equal amount of high-alkalinity petroleum sulfonate.

[0074] The preparation method is the same as in Example 1.

[0075] Example 6

[0076] This embodiment provides a weather-resistant and corrosion-resistant protective wax. The raw materials used in its preparation are the same as in Example 1, except that high-alkalinity calcium petroleum sulfonate is replaced with an equal amount of lanolin.

[0077] The preparation method is the same as in Example 1.

[0078] Example 7

[0079] This embodiment provides a weather-resistant and corrosion-resistant protective wax. Except for the absence of barium sulfate and the reduction of the proportion of aluminum tripolyphosphate and zinc oxide in the raw materials, the rest are the same as in Example 1.

[0080] The preparation method is the same as in Example 1.

[0081] Example 8

[0082] This embodiment provides a weather-resistant and corrosion-resistant protective wax. The raw materials used in its preparation are the same as in Example 1, except that aluminum tripolyphosphate is not added and a portion of the raw materials is allocated proportionally to barium sulfate and zinc oxide.

[0083] The preparation method is the same as in Example 1.

[0084] Example 9

[0085] This embodiment provides a weather-resistant and corrosion-resistant protective wax. Except for the absence of zinc oxide and the reduction of the proportion of aluminum tripolyphosphate and barium sulfate in the raw materials, the rest are the same as in Example 1.

[0086] The preparation method is the same as in Example 1.

[0087] Example 10

[0088] This embodiment provides a weather-resistant and corrosion-resistant protective wax, and the raw materials used in its preparation are the same as those in Example 1.

[0089] The preparation method is as follows:

[0090] First, add the wax material, resin material, and rust inhibitor into the reaction vessel, heat it to 110℃, and stop heating after stirring and mixing evenly.

[0091] Precisely proportion the following ratio by mass: Organic bentonite: D60 solvent oil: ethanol = 12:80:3; Place the organic bentonite in a 90℃ vacuum oven for 2.5 hours; Mix the D60 solvent oil and ethanol beforehand, and treat them in an ultrasonic cleaner (200W power, 40kHz frequency) for 15 minutes to allow the ethanol to form a microemulsion dispersion (particle size ≤500nm) in the oil phase; Inject the premixed D60-ethanol system into the preheated reactor, turn on the anchor stirring (speed 200r / min), and maintain the system in a laminar flow state; Use a "spiral feeding" method (slowly rotating along the reactor wall). Add the preheated organic bentonite and stir continuously at low shear for 20 minutes; rapidly raise the temperature to 50°C and simultaneously switch the stirring mode to "anchor + dispersion disc composite stirring", increasing the speed to 800 r / min; add ethanol once every 15 minutes during the process (the amount added is 13% of the initial ethanol); turn on the ultrasonic probe inside the cup at 50°C and continue for 10 minutes; maintain the temperature between 50 and 55°C, increase the stirring speed to 1800 r / min, and start the colloid mill circulation treatment (adjust the gap to between 50 and 100 μm); add the obtained material to the above reaction vessel and stir for 10 minutes.

[0092] After cooling to below 90°C, add rust-inhibiting filler, mix evenly, then cool to 60°C and add the remaining raw materials. Stir and mix until uniform, grind and remove from the container to obtain the weather-resistant and corrosion-resistant protective wax.

[0093] Example 11

[0094] This embodiment provides a weather-resistant and corrosion-resistant protective wax, and the raw materials used in its preparation are the same as those in Example 1.

[0095] The preparation method is as follows:

[0096] First, add the wax material, resin material, and rust inhibitor into the reaction vessel, heat it to 110℃, and stop heating after stirring and mixing evenly.

[0097] Using a high-speed dispersing mixer, add solvent oil and anti-settling agent separately, and stir continuously for 5 minutes to fully wet and disperse the anti-settling agent. Then add ethanol (anti-settling agent: solvent oil: ethanol = 12:80:3), and continue stirring for 10 minutes to fully activate the organic bentonite and form a gel.

[0098] After cooling to below 90°C, add rust-inhibiting filler, mix evenly, then cool to 60°C and add the remaining raw materials. Stir and mix until uniform, grind and remove from the container to obtain the weather-resistant and corrosion-resistant protective wax.

[0099] Example 12

[0100] This embodiment provides a weather-resistant and corrosion-resistant protective wax, and the raw materials used in its preparation are the same as those in Example 1.

[0101] The preparation method is as follows:

[0102] First, add the wax material, resin material, and rust inhibitor into the reaction vessel, heat it to 110℃, and stop heating after stirring and mixing evenly.

[0103] Add solvent oil and anti-settling agent separately using a high-speed dispersing mixer, and stir continuously for 5 minutes to ensure that the anti-settling agent is fully wetted and dispersed.

[0104] After cooling to below 90°C, add rust-inhibiting filler, mix evenly, then cool to 60°C and add the remaining raw materials. Stir and mix until uniform, grind and remove from the container to obtain the weather-resistant and corrosion-resistant protective wax.

[0105] Comparative Example 1

[0106] This comparative example provides a weather-resistant and corrosion-resistant protective wax. Except for the absence of rust inhibitors and the reduction of the proportion allocated to wax materials and rust-preventive fillers, the raw materials are the same as in Example 1.

[0107] The preparation method is the same as in Example 1, with appropriate adjustments.

[0108] Comparative Example 2

[0109] This comparative example provides a weather-resistant and corrosion-resistant protective wax. The raw materials used in its preparation are the same as in Example 1, except that no rust-inhibiting filler is added and a portion is allocated proportionally to the wax material and rust inhibitor.

[0110] The preparation method is the same as in Example 1, with appropriate adjustments.

[0111] Effect test:

[0112] The weather-resistant and corrosion-resistant protective waxes provided in Examples 1-12 and Comparative Examples 1-2 were tested. The test items and methods are as follows:

[0113] Salt spray test: The test shall be conducted in accordance with GB / T 10125;

[0114] Weather resistance (xenon lamp aging): Tested according to GB / T1865;

[0115] Anti-sinking effect:

[0116] (1) Instruments, materials and reagents: 500mL transparent glass container with lid, protective wax.

[0117] (2) Experimental steps:

[0118] ① Take a sample of protective wax and stir it at 1000 r / min for 10 min to make the wax uniform;

[0119] ② Take a 500mL transparent covered glass container, add the sample to 2 / 3 of the container (mass W1), and let it stand at 40℃ for 7 days;

[0120] ③ Transfer out the flowing wax sample and weigh its mass W2.

[0121] ④ Calculate its sedimentation amount, sedimentation ratio = (W1-W2) / W1×100%.

[0122] The results are as follows:

[0123]

[0124] The data above shows that the product provided by this invention is not easily photodegraded under ultraviolet irradiation, has stronger anti-powdering and anti-detachment capabilities, excellent weather resistance and corrosion resistance, good anti-settling effect, high stability, salt spray resistance up to 2000h, and xenon lamp aging up to 2000h. Comparative Examples 1-9 show that this invention can further improve the product's effect by selecting specific raw materials. Comparative Examples 1 and 10-12 show that this invention, by adopting a specific activation process and controlling relevant parameters, can make the filler produce a certain thixotropic property, thereby achieving excellent anti-settling effect and improving stability. Comparative Examples 1 and Comparative Examples 1-2 show that this invention, by selecting specific wax materials combined with specific rust inhibitors and rust-inhibiting fillers, can effectively improve the product's corrosion resistance and weather resistance through the synergistic effect of the three.

[0125] The applicant declares that this invention illustrates the weather-resistant and corrosion-resistant protective wax, its preparation method, and its application through the above embodiments. However, this invention is not limited to the above embodiments, meaning that this invention does not necessarily rely on the above embodiments for implementation. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of raw materials, additions of auxiliary components, and selection of specific methods, etc., all fall within the protection and disclosure scope of this invention.

[0126] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0127] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A weather-resistant and corrosion-resistant protective wax, characterized in that, The weather-resistant and corrosion-resistant protective wax comprises, by weight, 5-20 parts wax material, 30-50 parts solvent oil, 5-10 parts rust inhibitor, 5-10 parts rust-inhibiting filler, 5-20 parts resin material, 10-20 parts anti-settling agent, 0.1-1 part antioxidant and 0.1-1 part light stabilizer.

2. The weather-resistant and corrosion-resistant protective wax according to claim 1, characterized in that, The wax material includes any one or a combination of at least two of microcrystalline wax, modified beeswax, modified polyethylene wax, or highly refined paraffin wax, with microcrystalline wax being preferred.

3. The weather-resistant and corrosion-resistant protective wax according to claim 1 or 2, characterized in that, The rust inhibitor includes any one or a combination of at least two of N-oleoylsarcosine-octadecylamine salt, lanolin, barium petroleum ester soap, high-alkalinity calcium petroleum sulfonate, or neutral barium sulfonate, preferably high-alkalinity calcium petroleum sulfonate and neutral barium sulfonate.

4. The weather-resistant and corrosion-resistant protective wax according to any one of claims 1-3, characterized in that, The rust-preventive filler includes any one or a combination of at least two of barium sulfate, calcium carbonate, talc, zinc oxide, aluminum tripolyphosphate, or zinc aluminum orthophosphate, preferably a combination of barium sulfate, aluminum tripolyphosphate, and zinc oxide.

5. The weather-resistant and corrosion-resistant protective wax according to any one of claims 1-4, characterized in that, The resin material includes petroleum resin and / or epoxy resin, preferably a fully hydrogenated monomer resin.

6. The weather-resistant and corrosion-resistant protective wax according to any one of claims 1-5, characterized in that, The anti-settling agent comprises organobentonite and / or Walker VOK-34C, preferably organobentonite.

7. The weather-resistant and corrosion-resistant protective wax according to any one of claims 1-6, characterized in that, The antioxidants include BASF 225 and / or BYK B900, preferably BASF 225; Preferably, the light stabilizer comprises BASF 292 and / or BASF 770, with BASF 770 being more preferred.

8. A method for preparing a weather-resistant and corrosion-resistant protective wax according to any one of claims 1-7, characterized in that, The preparation method includes the following steps: The wax material, resin material, and rust inhibitor are mixed and heated, then mixed with solvent oil and anti-settling agent to obtain a gel. Finally, it is mixed with rust-inhibiting filler, antioxidant and light stabilizer to obtain the weather-resistant and corrosion-resistant protective wax.

9. The preparation method according to claim 8, characterized in that, The specific steps for mixing with solvent oil and anti-settling agent are as follows: The anti-settling agent is heated, then mixed and stirred with a mixture of solvent oil and ethanol, and heated. Ethanol is added intermittently, and the mixture is ultrasonicated. Then, the speed is increased and the mixture is circulated in a colloid mill. The resulting material is then mixed with wax material, resin material, and rust inhibitor. Preferably, the baking temperature is 80-100℃ and the time is 2-3 hours; Preferably, the mass ratio of the anti-settling agent, solvent oil, and ethanol is (8-14):(60-92):(2-4); Preferably, the mixing and stirring rate is 200-800 r / min; Preferably, the heating rate is 0.8-1.2℃ / min, and the temperature is increased to 45-55℃; Preferably, the intermittent ethanol replenishment specifically involves adding ethanol every 12-18 minutes, divided into three additions, with the total ethanol replenishment amount being 10-15% of the initial ethanol addition amount; Preferably, the rotational speed is increased to 1500-2000 r / min.

10. The application of a weather-resistant and corrosion-resistant protective wax according to any one of claims 1-7 in the preparation of automotive protective wax.

Images