Spray-on peelable high-gloss and mirror-finish mold rust inhibitor and its manufacturing method

Abstract

This invention discloses a peelable spray-type rust inhibitor for high-gloss and mirror-finish molds and its manufacturing method, comprising the following raw materials in parts by weight: 8-10 parts film-forming resin; 1-1.8 parts epoxy resin; 1-1.8 parts dibutyl phthalate; 1-1.4 parts castor oil; 37-45 parts isopropanol; 37-45 parts xylene; 10-15 parts lanolin; and 15-20 parts rust-inhibiting paste. This invention employs a compound system of film-forming resin, epoxy resin, and rust-inhibiting paste, exhibiting strong film-forming and adsorption properties. It effectively isolates moisture and oxygen in the air from contact with the mold metal, providing long-lasting and stable rust protection for high-gloss and mirror-finish molds, preventing mold corrosion from affecting precision and surface finish.

Description

Technical Field

[0001] This invention relates to the field of mold rust inhibitors, and in particular to a spray can-type peelable high-gloss and mirror-finish mold rust inhibitor and its manufacturing method. Background Technology

[0002] Because mold cavities are complex and require relatively high dimensional accuracy, rust on the working surface can alter its smoothness and precision, directly impacting the surface quality of the metal or non-metal workpieces formed after processing. In severe cases, it can even render the mold unusable. Therefore, in the machinery manufacturing industry, various metal molds are typically treated with rust-preventive oils and greases during processing and use. Periodic rust prevention is particularly important when molds are periodically shut down or out of service.

[0003] Currently, when commercially available rust-preventive oils and pastes are sprayed onto the surface of metal molds, the molds must be cleaned with a cleaning agent before installation and use to remove the rust-preventive layer and prevent contamination of the product. Another problem with these commonly used rust-preventive oils and pastes is that the rust inhibitor slowly penetrates into the metal mold, while the cleaning agent only cleans the surface. This leads to a problem: after 0.5-1 hour of production use, the oil that has penetrated into the mold slowly seeps back to the surface, contaminating the product and significantly reducing yield. The current solution used by manufacturers is to disassemble the metal mold for surface cleaning every 0.5-1 hour of production use before reassembling it (disassembly, cleaning, and reassembly take 2-2.5 hours), greatly reducing production efficiency. Summary of the Invention

[0004] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a spray-type peelable high-gloss and mirror-finish mold rust inhibitor and its manufacturing method. It can effectively solve the problems of existing mold rust-preventive oils and rust-preventive pastes requiring repeated cleaning after use, easily penetrating the mold interior and contaminating the product, and requiring frequent disassembly and cleaning, resulting in low production efficiency and reduced product yield.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A spray-type peelable high-gloss, mirror-finish mold rust inhibitor comprises the following raw materials in parts by weight: 8-10 parts film-forming resin; 1-1.8 parts epoxy resin; 1-1.8 parts dibutyl phthalate; 1-1.4 parts castor oil; 37-45 parts isopropanol; 37-45 parts xylene; 10-15 parts lanolin; and 15-20 parts rust inhibitor paste.

[0006] As a preferred embodiment, the raw materials are preferably in the following proportions by weight: 9 parts film-forming resin, 1.5 parts epoxy resin, 1.5 parts dibutyl phthalate, 1.2 parts castor oil, 40 parts isopropanol, 40 parts xylene, 12 parts lanolin, and 18 parts rust inhibitor.

[0007] A method for manufacturing a peelable, spray-can type high-gloss, mirror-finish mold rust inhibitor, characterized by comprising the following steps: a. Weigh the film-forming resin, isopropanol, and xylene according to the formula. Place the film-forming resin, isopropanol, and xylene in a stainless steel container, then transfer them to a reaction vessel and react at room temperature for 30 minutes, and then let them dissolve completely for 24 hours. b. Dissolve the epoxy resin in isopropanol for 2 hours, then add the mixture obtained in step a; c. Add dibutyl phthalate, castor oil, lanolin and rust inhibitor in sequence, and emulsify at high speed for 30 minutes; d. Let the mixture obtained in step c stand for 24 hours, then filter to obtain the rust inhibitor; e. Pour the rust inhibitor into the spray can, fill it with propellant, and seal it.

[0008] As a preferred embodiment, the propellant is dimethyl ether or propane.

[0009] As a preferred option, a 450ml spray can is filled with 110-140g of rust inhibitor and 130-160g of propellant.

[0010] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution: 1. Excellent Rust Prevention and Protection: This invention utilizes a compound system of film-forming resin, epoxy resin, and rust-inhibiting paste. Its strong film-forming and adsorption properties effectively isolate moisture and oxygen in the air from contact with the mold metal, providing long-lasting and stable rust prevention protection for high-gloss and mirror-finish molds, preventing rust from affecting precision and surface finish. 2. Convenient to Use and No Cleaning Required: The rust-inhibiting film formed by this invention has a peelable structure, allowing for direct peeling of the entire film or complete removal after 3-5 trial moldings, eliminating the need for cleaning agents and simplifying the cleaning process. 3. Prevents Product Contamination and Improves Yield: The formula of this invention does not contain oily components and will not penetrate into the mold, preventing rust inhibitor backflow and contamination of the molded product, significantly reducing the product defect rate. 4. Increased Production Efficiency: This invention eliminates the need for periodic disassembly, cleaning, and reassembly of metal molds, enabling continuous mold production, significantly reducing downtime, and substantially improving overall production efficiency. 5. High adaptability and easy to use: This invention uses a spray can packaging and dimethyl ether / propane propellant. The spraying operation is simple and can evenly cover complex cavity molds, making it suitable for rust prevention scenarios of various high-gloss and mirror-finish molds. Detailed Implementation

[0011] This invention discloses a peelable, spray-type high-gloss, mirror-finish mold rust inhibitor, comprising the following raw materials in parts by weight: 8-10 parts film-forming resin; 1-1.8 parts epoxy resin; 1-1.8 parts dibutyl phthalate; 1-1.4 parts castor oil; 37-45 parts isopropanol; 37-45 parts xylene; 10-15 parts lanolin; and 15-20 parts rust inhibitor. The film-forming resin is a peelable resin.

[0012] This invention also discloses a method for manufacturing the aforementioned spray-can type peelable high-gloss and mirror-finish mold rust inhibitor, comprising the following steps: a. Weigh the film-forming resin, isopropanol, and xylene according to the ratio. Place the film-forming resin, isopropanol, and xylene in a stainless steel container, then transfer them to a reaction vessel and react at room temperature for 30 minutes, and then let them dissolve completely for 24 hours.

[0013] b. Dissolve the epoxy resin in isopropanol for 2 hours, then add the mixture obtained in step a.

[0014] c. Add dibutyl phthalate, castor oil, lanolin and rust inhibitor in sequence, and emulsify at high speed for 30 minutes.

[0015] d. Let the mixture obtained in step c stand for 24 hours, then filter to obtain the rust inhibitor.

[0016] e. Pour the rust inhibitor into the spray can, fill it with propellant, and seal it. The propellant is dimethyl ether or propane-butane. Fill a 450ml spray can with 110-140g of rust inhibitor and 130-160g of propellant.

[0017] The present invention will be further described in detail below with reference to several embodiments: Example 1: A spray-type peelable high-gloss, mirror-finish mold rust inhibitor comprises the following raw materials in parts by weight: 9 parts film-forming resin, 1.5 parts epoxy resin, 1.5 parts dibutyl phthalate, 1.2 parts castor oil, 40 parts isopropanol, 40 parts xylene, 12 parts lanolin, and 18 parts rust inhibitor paste.

[0018] This invention also discloses a method for manufacturing the aforementioned spray-can type peelable high-gloss and mirror-finish mold rust inhibitor, comprising the following steps: a. Weigh the film-forming resin, isopropanol, and xylene according to the ratio. Place the film-forming resin, isopropanol, and xylene in a stainless steel container, then transfer them to a reaction vessel and react at room temperature for 30 minutes, and then let them dissolve completely for 24 hours.

[0019] b. Dissolve the epoxy resin in isopropanol for 2 hours, then add the mixture obtained in step a.

[0020] c. Add dibutyl phthalate, castor oil, lanolin and rust inhibitor in sequence, and emulsify at high speed for 30 minutes.

[0021] d. Let the mixture obtained in step c stand for 24 hours, then filter to obtain the rust inhibitor.

[0022] e. Pour the rust inhibitor into the spray can, fill it with propellant, and seal it. The propellant is dimethyl ether or propane. A 450ml spray can contains 110g of rust inhibitor and 130g of propellant.

[0023] Example 2: A spray-type peelable high-gloss, mirror-finish mold rust inhibitor comprises the following raw materials in parts by weight: 8 parts film-forming resin; 1.8 parts epoxy resin; 1 part dibutyl phthalate; 1.4 parts castor oil; 45 parts isopropanol; 37 parts xylene; 15 parts lanolin; and 20 parts rust inhibitor paste.

[0024] This invention also discloses a method for manufacturing the aforementioned spray-can type peelable high-gloss and mirror-finish mold rust inhibitor, comprising the following steps: a. Weigh the film-forming resin, isopropanol, and xylene according to the ratio. Place the film-forming resin, isopropanol, and xylene in a stainless steel container, then transfer them to a reaction vessel and react at room temperature for 30 minutes, and then let them dissolve completely for 24 hours.

[0025] b. Dissolve the epoxy resin in isopropanol for 2 hours, then add the mixture obtained in step a.

[0026] c. Add dibutyl phthalate, castor oil, lanolin and rust inhibitor in sequence, and emulsify at high speed for 30 minutes.

[0027] d. Let the mixture obtained in step c stand for 24 hours, then filter to obtain the rust inhibitor.

[0028] e. Pour the rust inhibitor into the spray can, fill it with propellant, and seal it. The propellant is dimethyl ether or propane. A 450ml spray can contains 140g of rust inhibitor and 160g of propellant.

[0029] Example 3: A spray-type peelable high-gloss, mirror-finish mold rust inhibitor comprises the following raw materials in parts by weight: 10 parts film-forming resin; 1.3 parts epoxy resin; 1.4 parts dibutyl phthalate; 1.1 parts castor oil; 40 parts isopropanol; 41 parts xylene; 12 parts lanolin; and 17 parts rust inhibitor paste.

[0030] This invention also discloses a method for manufacturing the aforementioned spray-can type peelable high-gloss and mirror-finish mold rust inhibitor, comprising the following steps: a. Weigh the film-forming resin, isopropanol, and xylene according to the ratio. Place the film-forming resin, isopropanol, and xylene in a stainless steel container, then transfer them to a reaction vessel and react at room temperature for 30 minutes, and then let them dissolve completely for 24 hours.

[0031] b. Dissolve the epoxy resin in isopropanol for 2 hours, then add the mixture obtained in step a.

[0032] c. Add dibutyl phthalate, castor oil, lanolin and rust inhibitor in sequence, and emulsify at high speed for 30 minutes.

[0033] d. Let the mixture obtained in step c stand for 24 hours, then filter to obtain the rust inhibitor.

[0034] e. Pour the rust inhibitor into the spray can, fill it with propellant, and seal it. The propellant is dimethyl ether or propane. A 450ml spray can contains 120g of rust inhibitor and 140g of propellant.

[0035] Example 4: A spray-type peelable high-gloss, mirror-finish mold rust inhibitor comprises the following raw materials in parts by weight: 9 parts film-forming resin; 1 part epoxy resin; 1.8 parts dibutyl phthalate; 1 part castor oil; 37 parts isopropanol; 45 parts xylene; 10 parts lanolin; and 15 parts rust inhibitor paste.

[0036] This invention also discloses a method for manufacturing the aforementioned spray-can type peelable high-gloss and mirror-finish mold rust inhibitor, comprising the following steps: a. Weigh the film-forming resin, isopropanol, and xylene according to the ratio. Place the film-forming resin, isopropanol, and xylene in a stainless steel container, then transfer them to a reaction vessel and react at room temperature for 30 minutes, and then let them dissolve completely for 24 hours.

[0037] b. Dissolve the epoxy resin in isopropanol for 2 hours, then add the mixture obtained in step a.

[0038] c. Add dibutyl phthalate, castor oil, lanolin and rust inhibitor in sequence, and emulsify at high speed for 30 minutes.

[0039] d. Let the mixture obtained in step c stand for 24 hours, then filter to obtain the rust inhibitor.

[0040] e. Pour the rust inhibitor into the spray can, fill it with propellant, and seal it. The propellant is dimethyl ether or propane. A 450ml spray can contains 130g of rust inhibitor and 150g of propellant.

[0041] Example 5: A spray-type peelable high-gloss, mirror-finish mold rust inhibitor comprises the following raw materials in parts by weight: 8.5 parts film-forming resin; 1.5 parts epoxy resin; 1.6 parts dibutyl phthalate; 1.3 parts castor oil; 42 parts isopropanol; 39 parts xylene; 11 parts lanolin; and 16 parts rust inhibitor paste.

[0042] This invention also discloses a method for manufacturing the aforementioned spray-can type peelable high-gloss and mirror-finish mold rust inhibitor, comprising the following steps: a. Weigh the film-forming resin, isopropanol, and xylene according to the ratio. Place the film-forming resin, isopropanol, and xylene in a stainless steel container, then transfer them to a reaction vessel and react at room temperature for 30 minutes, and then let them dissolve completely for 24 hours.

[0043] b. Dissolve the epoxy resin in isopropanol for 2 hours, then add the mixture obtained in step a.

[0044] c. Add dibutyl phthalate, castor oil, lanolin and rust inhibitor in sequence, and emulsify at high speed for 30 minutes.

[0045] d. Let the mixture obtained in step c stand for 24 hours, then filter to obtain the rust inhibitor.

[0046] e. Pour the rust inhibitor into the spray can, fill it with propellant, and seal it. The propellant is dimethyl ether or propane. A 450ml spray can contains 115g of rust inhibitor and 135g of propellant.

[0047] Example 6: A spray-type peelable high-gloss, mirror-finish mold rust inhibitor comprises the following raw materials in parts by weight: 9.5 parts film-forming resin; 1.7 parts epoxy resin; 1.5 parts dibutyl phthalate; 1.2 parts castor oil; 44 parts isopropanol; 43 parts xylene; 14 parts lanolin; and 18 parts rust inhibitor paste.

[0048] This invention also discloses a method for manufacturing the aforementioned spray-can type peelable high-gloss and mirror-finish mold rust inhibitor, comprising the following steps: a. Weigh the film-forming resin, isopropanol, and xylene according to the ratio. Place the film-forming resin, isopropanol, and xylene in a stainless steel container, then transfer them to a reaction vessel and react at room temperature for 30 minutes, and then let them dissolve completely for 24 hours.

[0049] b. Dissolve the epoxy resin in isopropanol for 2 hours, then add the mixture obtained in step a.

[0050] c. Add dibutyl phthalate, castor oil, lanolin and rust inhibitor in sequence, and emulsify at high speed for 30 minutes.

[0051] d. Let the mixture obtained in step c stand for 24 hours, then filter to obtain the rust inhibitor.

[0052] e. Pour the rust inhibitor into the spray can, fill it with propellant, and seal it. The propellant is dimethyl ether or propane. A 450ml spray can contains 125g of rust inhibitor and 145g of propellant.

[0053] The rust inhibitors in the above embodiments are applied to high-gloss and mirror-finish molds. They are all formulated and synthesized using film-forming resins, epoxy resins, and rust-inhibiting pastes, exhibiting excellent film-forming and adsorption properties. This effectively isolates the metal from moisture and oxygen in the air, achieving excellent rust prevention and protection. Because this invention is oil-free, the formed rust-preventive layer is a film that can be directly peeled off during use, or the rust inhibitor can be completely removed during the first 3-5 molds in the production process (trial molding). Therefore, metal molds do not require periodic disassembly and cleaning during production, enabling continuous production and significantly improving production efficiency and product yield.

[0054] The key design feature of this invention is that it employs a compound system of film-forming resin, epoxy resin, and rust-preventive paste, which has strong film-forming and adsorption properties. This system can effectively isolate moisture and oxygen in the air from contact with the mold metal, providing long-lasting and stable rust protection for high-gloss and mirror-finish molds and preventing mold corrosion from affecting precision and smoothness.

[0055] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A spray can type strippable high gloss, mirror finish mold rust preventive characterized by: The raw materials include the following parts by weight: 8-10 parts film-forming resin; 1-1.8 parts epoxy resin; 1-1.8 parts dibutyl phthalate; 1-1.4 parts castor oil; 37-45 parts isopropanol; 37-45 parts xylene; 10-15 parts lanolin; and 15-20 parts rust inhibitor.

2. The spray can type strippable high gloss, mirror finish mold rust preventative of claim 1 wherein: The preferred proportions of the raw materials by weight are: 9 parts film-forming resin, 1.5 parts epoxy resin, 1.5 parts dibutyl phthalate, 1.2 parts castor oil, 40 parts isopropanol, 40 parts xylene, 12 parts lanolin, and 18 parts rust inhibitor.

3. A method of producing a spray can type strippable high-gloss, mirror-finish mold rust preventive as claimed in claim 1 or 2, characterized by: Includes the following steps: a. Weigh the film-forming resin, isopropanol, and xylene according to the formula. Place the film-forming resin, isopropanol, and xylene in a stainless steel container, then transfer them to a reaction vessel and react at room temperature for 30 minutes, and then let them dissolve completely for 24 hours. b. Dissolve the epoxy resin in isopropanol for 2 hours, then add the mixture obtained in step a; c. Add dibutyl phthalate, castor oil, lanolin and rust inhibitor in sequence, and emulsify at high speed for 30 minutes; d. Let the mixture obtained in step c stand for 24 hours, then filter to obtain the rust inhibitor; e. Pour the rust inhibitor into the spray can, fill it with propellant, and seal it.

4. The method of making a spray can type strippable high gloss, mirror finish mold rust preventative according to claim 3, characterized in that: The propellant is dimethyl ether or propane.

5. The method for manufacturing the spray-can type peelable high-gloss, mirror-finish mold rust inhibitor according to claim 3, characterized in that: Fill a 450ml spray can with 110-140g of rust inhibitor and 130-160g of propellant.