Outdoor medium-term protective wax film antirust agent composition and preparation method thereof

Abstract

The invention discloses an outdoor medium-term protective wax film antirust agent composition and a preparation method thereof, and belongs to the technical field of antirust agents, silicon wax and oxidized microcrystalline wax or other wax containing polar groups are introduced into a film forming substance for compounding, so that the surface of a wax film after film forming is endowed with relatively low surface energy and excellent water repellency, and the service life of the wax film is prolonged. And meanwhile, good adhesion of a conventional wax film is kept, so that the anti-rust performance and weather resistance of the product are greatly improved. The outdoor medium-term protective wax film antirust agent composition comprises the following raw materials by weight: 18-30% of a wax film-forming agent; 1-3% of a wax dispersant; 1-2.5% of a coalescing agent; 10-15% of an oil soluble corrosion inhibitor; 0.25 to 0.5 percent of a viscosity modifier; and 53-72.75% of an alkane solvent, wherein the wax film-forming agent comprises silicone wax and other wax film-forming substances.

Description

Technical Field

[0001] The invention belongs to the technical field of rust inhibitors, and in particular relates to an outdoor medium-term protective wax film rust inhibitor composition, and also in particular relates to a preparation method. Background Art

[0002] With the development of industry, metal materials are increasingly used outdoors, and their anti-rust protection has become the key to maintaining the life and performance of materials. For the protection of metal products used outdoors, the rust inhibitor is required to be resistant to rain erosion, sunlight exposure, and long-term protection. Traditional rust inhibitors such as anti-rust oil and anti-rust grease generally cannot meet the requirements of outdoor protection. In this case, wax film rust inhibitor is a better choice. For example:

[0003] Publication number "CN1804015A" discloses an ultra-thin wax film anti-rust composition for firearms, which contains wax film-forming materials, PTFE lubricants, oil-soluble corrosion inhibitors and organic solvents. After being applied to the metal surface, it can quickly form a 2-5 micron thick wax film that is non-greasy, non-draining, non-sticky, non-sand-sticky, rain-resistant, scratch-resistant, resistant to humidity and heat, seawater and salt spray corrosion, and has a good lubricating effect. The 5% neutral salt spray time of 45# steel sheets coated with this product can reach 48 hours.

[0004] Another example is the publication number "CN105296080A" which discloses a wax film rust inhibitor and its preparation method. The invention uses wax substances as film-forming substances, which can effectively increase the thickness of the oil film, have good adhesion, and are not easy to sag during construction. The anti-rust wax film is both hydrophobic and has good density and toughness, thereby extending the anti-rust time of the anti-rust wax film; alkane solvents are used as carriers, and anti-rust additives and mechanical oils are added to enhance the anti-rust performance. The wax film rust inhibitor of the invention is an oily system, which can dry quickly and has excellent anti-rust performance. The 5% neutral salt spray time of 45# steel sheets can reach 72 hours.

[0005] According to the requirements of Caterpillar Inc. CAT 1E4967 for outdoor medium-term metal protection, the workpiece treated with the rust inhibitor needs to be exposed to 5% neutral salt spray for more than 336 hours, and the UV aging test needs to pass 10 cycles. Obviously, the above inventions cannot meet the requirements and can only be used as outdoor short-term protective rust inhibitors.

[0006] Therefore, how to provide a durable and reliable protective barrier for metal surfaces outdoors has become an urgent problem to be solved. Therefore, an outdoor medium-term protective wax film rust inhibitor composition and a preparation method thereof are needed to assist in solving this problem. Summary of the invention

[0007] (1) Technical issues to be solved

[0008] In view of the deficiencies in the prior art, the object of the present invention is to provide an outdoor medium-term protective wax film rust inhibitor composition and a preparation method thereof. The outdoor medium-term protective wax film rust inhibitor composition and the preparation method thereof introduce silicone wax and oxidized microcrystalline wax or other waxes containing polar groups into the film-forming substance to give the surface of the wax film after film formation a lower surface energy and excellent water repellency, while also maintaining the good adhesion of conventional wax films, thereby greatly improving the product's anti-rust performance and weather resistance.

[0009] (2) Technical solution

[0010] In order to solve the above technical problems, the present invention provides such an outdoor medium-term protective wax film rust inhibitor composition, which comprises the following raw materials and weight ratios:

[0011]

[0012] As a further preferred embodiment, when the wax film-forming agent is a mixture of silicone wax, oxidized microcrystalline wax and white beeswax, the silicone wax is a modified dimethylsiloxane with an alkyl carbon chain length of 30, and Dowsil TM 2-5088, oxidized microcrystalline wax uses oxidized microcrystalline wax OW1080;

[0013] The wax dispersant is a polycarboxylate modified with fatty amine;

[0014] The film-forming aid is dibutyl sebacate;

[0015] The oil-soluble corrosion inhibitor is a mixture of oxidized petroleum calcium soap and petroleum calcium sulfonate;

[0016] The alkane solvent used is D60 solvent oil.

[0017] Furthermore, the weight ratio of the above raw materials is:

[0018]

[0019] As a further preferred embodiment, when the wax film-forming agent is a combination of silicone wax, oxidized microcrystalline wax and rice bran wax, wherein the silicone wax is a modified dimethylsiloxane with an alkyl carbon chain length of 30-45, and Dowsil TM SW-8005, oxidized microcrystalline wax uses oxidized microcrystalline wax OW4080;

[0020] The wax dispersant is a polycarboxylate modified with fatty amine;

[0021] The film-forming aid is mineral oil;

[0022] The oil-soluble corrosion inhibitor is a mixture of oxidized petroleum calcium soap and calcium dinonylnaphthalene sulfonate;

[0023] The alkane solvent used is D40 solvent oil.

[0024] Furthermore, the weight ratio of the above raw materials is:

[0025]

[0026] As a further preferred embodiment, when the wax film-forming agent uses a combination of silicone wax, oxidized microcrystalline wax and montan wax, wherein the silicone wax uses a modified dimethylsiloxane with an alkyl carbon chain length of 30, and Dowsil TM 2-5088, oxidized microcrystalline wax adopts oxidized microcrystalline wax OW3080;

[0027] The wax dispersant is EVA-modified polyacrylate;

[0028] The film-forming aid is dioctyl sebacate;

[0029] The oil-soluble corrosion inhibitor is a mixture of lanolin magnesium soap and calcium dinonylnaphthalene sulfonate;

[0030] The alkane solvent used is D60 solvent oil.

[0031] Furthermore, the weight ratio of the above raw materials is:

[0032]

[0033] A preparation method comprising the following steps

[0034] S1. Put all raw materials into a reactor with steam heating and cooling jacket in sequence, and heat to the required temperature;

[0035] S2, start stirring to dissolve all the solids in the solvent to form a transparent homogeneous solution;

[0036] S3, continue to stir and force cooling to below 30 degrees Celsius;

[0037] S4, adding a viscosity regulator and stirring evenly to obtain a translucent viscous liquid;

[0038] S5. Finally, the required wax film rust inhibitor is obtained after filtering through a 50-100um filter bag.

[0039] As a further preferred solution, the temperature in S1 is in the range of 80-90 degrees.

[0040] (3) Beneficial effects

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The present invention introduces silicone wax and oxidized microcrystalline wax or other wax containing polar groups into the film-forming material to give the wax film surface a lower surface energy and excellent water repellency after film formation, while also maintaining the good adhesion of the conventional wax film, thereby greatly improving the product's anti-rust performance and weather resistance;

[0043] The present invention uses the wax dispersant in the formula to help the wax film-forming substance to be better dissolved and dispersed in the solvent, the film-forming aid is used to improve the film-forming performance of the wax, the rust-proof additive and the film-forming substance together give the product long-term rust-proof ability, and the viscosity modifier is used to adjust the viscosity of the product to meet the needs of different applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 It is a structural schematic diagram of the present invention;

[0046] Figure 2 It is a structural schematic diagram of the present invention;

[0047] Figure 3 This is a product index test table for performance testing of the embodiment of the present invention;

[0048] Figure 4 A photo of a 10# steel sheet coated with the outdoor medium-term protective wax film rust inhibitor implemented by the present invention and subjected to a 5% neutral salt spray test (standard method: ASTM B117);

[0049] Figure 5 This is a photo of a 10# steel sheet coated with the outdoor medium-term protective wax film rust inhibitor implemented in the present invention and subjected to 10 cycles of UV aging test (standard method: GB / T 23987). DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] like Figure 1 and Figure 2As shown, this specific embodiment is an outdoor medium-term protective wax film rust inhibitor composition, the outdoor medium-term protective wax film rust inhibitor composition,

[0052] 18-30% wax film-forming agent, wherein the wax film-forming agent includes silicone wax and other wax film-forming substances;

[0053]

[0054] Specifically, the following embodiments are included:

[0055] Embodiment 1

[0056] The medium-term protective wax film rust inhibitor formula to be implemented in the present invention, in specific implementation, the wax film-forming agent is a combination of silicone wax, oxidized microcrystalline wax and white beeswax, wherein the silicone wax is a modified dimethyl siloxane with an alkyl carbon chain length of 30, preferably Dowsil TM 2-5088, oxidized microcrystalline wax is preferably OW1080 from Fushun Petrochemical Research Institute. The oil-soluble corrosion inhibitor is a mixture of oxidized petroleum fat calcium soap and petroleum calcium sulfonate, the wax dispersant is a polycarboxylate modified by fatty amine, the film-forming aid is dibutyl sebacate, and the viscosity modifier is the following weight percentage of each raw material:

[0057]

[0058] Put all the raw materials into a stirring kettle with a heating jacket in order, heat it to 80-90 degrees, and stir until all the solids are dissolved to form a transparent homogeneous solution. Continue to stir and force cool it to below 30°C through cold water in the jacket, and finally add the viscosity regulator to obtain a translucent viscous liquid. Filter it through a 100-micron filter bag to obtain the finished wax film rust inhibitor.

[0059] Embodiment 2

[0060] The medium-term protective wax film rust inhibitor to be implemented in the present invention is a wax film-forming agent that uses a combination of silicone wax, oxidized microcrystalline wax and rice bran wax, wherein the silicone wax uses a modified dimethylsiloxane with an alkyl carbon chain length of 30-45, preferably Dowsil TM SW-8005, oxidized microcrystalline wax is preferably OW4080 from Fushun Petrochemical Research Institute. The oil-soluble corrosion inhibitor is a mixture of oxidized petroleum fat calcium soap and dinonylnaphthalene calcium sulfonate, the wax dispersant is a polycarboxylate modified by fatty amine, the film-forming aid is mineral oil, and the viscosity modifier is the following weight percentage of each raw material:

[0061]

[0062]

[0063] Put all the raw materials into a stirring kettle with a heating jacket in order, heat it to 82-92 degrees, and stir until all the solids are dissolved to form a transparent homogeneous solution. Continue to stir and force cool it to below 30°C through cold water in the jacket, and finally add the viscosity regulator to obtain a translucent viscous liquid. Filter it through a 50-micron filter bag to obtain the finished wax film rust inhibitor.

[0064] Embodiment 3

[0065] The medium-term protective wax film rust inhibitor to be implemented in the present invention is a wax film-forming agent that uses a combination of silicone wax, oxidized microcrystalline wax and montan wax, wherein the silicone wax uses a modified dimethylsiloxane with an alkyl carbon chain length of 30, preferably Dowsil TM 2-5088, oxidized microcrystalline wax uses OW3080, oil-soluble corrosion inhibitor uses a mixture of lanolin magnesium soap and calcium dinonylnaphthalene sulfonate, wax dispersant uses EVA modified polyacrylate, film-forming aid uses dioctyl sebacate, viscosity modifier, and the weight percentages of each raw material are as follows:

[0066]

[0067] Put all the raw materials into a stirring kettle with a heating jacket in order, heat it to 85-95 degrees, and stir until all the solids are dissolved to form a transparent homogeneous solution. Continue to stir and force cool it to below 30°C through cold water in the jacket, and finally add the viscosity regulator to obtain a translucent viscous liquid. Filter it through a 100-micron filter bag to obtain the finished wax film rust inhibitor.

[0068] Reference Figure 3 As shown, the wax film rust inhibitors prepared in Examples 1-3 were tested for their indexes and performances.

[0069] From the table data, it can be known that the corresponding embodiments above can be known that the outdoor medium-term protective wax film rust inhibitor provided by the present invention is simple in production process and excellent in outdoor rust prevention effect by selecting raw materials and optimizing the formula, and the product can meet the requirements of outdoor medium-term protection. At the same time, the formula proposed by the present invention can adjust the viscosity according to the needs to meet different application processes, and can be used for spraying, dipping and brushing.

[0070] Reference Figure 4 and Figure 5 As shown in the actual picture, the present invention is suitable for the pursuit of better outdoor protection effect and weather resistance, and the coating is easy to remove. The formula raw materials do not contain barium and other heavy metals, polycyclic aromatic hydrocarbons and other toxic or environmentally harmful substances. The 5% neutral salt spray time (standard method: ASTM B117) of the coated 10# steel sheet can be up to more than 360 hours, and the ultraviolet aging test (standard method: GB / T 23987) can be more than 10 cycles, which can well meet the requirements of outdoor medium-term protection of steel products.

[0071] All technical features in this embodiment can be freely combined according to actual needs.

[0072] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An outdoor medium-term protective wax film rust inhibitor composition, the outdoor medium-term protective wax film rust inhibitor composition is characterized in that: Including the following raw materials and weight ratio: Wax film former 18-30%; Wax dispersant 1-3%; Film-forming aid 1-2.5%; Oil-soluble corrosion inhibitor 10-15%; Viscosity regulator 0.25-0.5%; Alkane solvents 53-72.75%.

2. The outdoor medium-term protective wax film rust inhibitor composition according to claim 1, characterized in that: The wax film-forming agent includes silicone wax and other wax film-forming substances.

3. The outdoor medium-term protective wax film rust inhibitor composition according to claim 2, characterized in that: The silicone wax is selected from silicone wax with an organic siloxane as the main chain and a long carbon chain modification containing a carbon number higher than 26, and the melting point is between 40-80 degrees Celsius.

4. The outdoor medium-term protective wax film rust inhibitor composition according to claim 2, characterized in that: The other wax film-forming substances are wax substances with a melting point between 45-85 degrees Celsius and containing polar groups, and can be selected from one or more combinations of oxidized paraffin, oxidized microcrystalline wax, natural beeswax, rice bran wax, montan wax or other higher fatty acid ester waxes.

5. The outdoor medium-term protective wax film rust inhibitor composition according to claim 1, characterized in that: The wax dispersant is an auxiliary agent that can prevent the wax from agglomerating in the solvent, and can be a combination of one or more of fatty amine-modified polycarboxylate, EVA-modified polyacrylate, etc.

6. The outdoor medium-term protective wax film rust inhibitor composition according to claim 1, characterized in that: The film-forming aid may be selected from one or more combinations of mineral oil, dibutyl sebacate, dioctyl sebacate, and the like.

7. The outdoor medium-term protective wax film rust inhibitor composition according to claim 1, characterized in that: The oil-soluble corrosion inhibitor is selected from one or more combinations of oxidized petroleum calcium soap, lanolin magnesium soap, petroleum calcium sulfonate, synthetic calcium sulfonate, dinonylnaphthalene calcium sulfonate, and the like.

8. The outdoor medium-term protective wax film rust inhibitor composition according to claim 1, characterized in that: The viscosity modifier may be selected from one or more of modified polyisobutylene or other high molecular polymers that can significantly adjust the viscosity of solvent-based products.

9. A preparation method for preparing an outdoor medium-term protective wax film rust inhibitor composition according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Put all raw materials into a reactor with steam heating and cooling jacket in sequence, and heat to the required temperature; S2, start stirring to dissolve all the solids in the solvent to form a transparent homogeneous solution; S3, continue to stir and force cooling to below 30 degrees Celsius; S4, adding a viscosity regulator and stirring evenly to obtain a translucent viscous liquid; S5. Finally, the required wax film rust inhibitor is obtained after filtering through a 50-100um filter bag.

10. A preparation method according to claim 9, characterized in that: The temperature in S1 ranges from 80 to 95 degrees.

Images