CN110760117A - Gas-phase anti-rust film and preparation method thereof - Google Patents
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Abstract
The invention discloses a gas-phase anti-rust film and a preparation method thereof, relates to the technical field of anti-rust films, and solves the problem that the integral application effect of the anti-rust film is poor due to the fact that the anti-rust film is easy to damage in the actual use process. A gas-phase antirust film comprises the following components in parts by weight: 110 portions and 130 portions of polyethylene resin; 15-25 parts of low-density polyethylene; 10-15 parts of a vapor phase corrosion inhibitor; 14-20 parts of calcium carbonate; 6-15 parts of white carbon black; 10-30 parts of color master batch; 5-10 parts of vinyl triethoxysilane; 8-15 parts of a plasticizer; 4-8 parts of a dispersing agent; 12-18 parts of ammonia leaching slag powder; 8-20 parts of ethyl borate. The gas-phase antirust film has good structural strength, is not easy to damage in the actual use process, can exert good and stable antirust effect, and has good applicability as a whole.
Description
Technical Field
The invention relates to the technical field of antirust films, in particular to a gas-phase antirust film and a preparation method thereof.
Background
The antirust film is a gas-phase antirust plastic film, is a new-generation innovative high-tech product based on the combination of a high polymer material and VCI gas-phase antirust technology development, and can effectively prevent rust after packing and sealing antirust metal objects.
The invention discloses an interception type antirust film and a preparation method thereof in Chinese patent application with publication number CN110240743A, wherein the antirust film is prepared by mixing, granulating and blowing low-density polyethylene, nano metal powder, nano montmorillonite and corrosion inhibitor; the preparation method of the antirust film comprises the following steps: the preparation method comprises the following steps of (1) mixing low-density polyethylene, nano metal powder and nano montmorillonite in percentage by mass (75-94%): (2.5-10%): (1-8%) performing extrusion granulation by using a double-screw extruder to obtain a first master batch; the low-density polyethylene and the vapor phase corrosion inhibitor are mixed according to the mass percentage (80-95%): (5-20%) extruding and granulating by using a double-screw extruder to obtain a second master batch, and blowing the first master batch, the second master batch and the low-density polyethylene by using a blow molding machine set according to the mass percentage (5:5: 90).
In the above-mentioned application document, through adding nanometer metal powder, the barrier properties of film has been improved, and because nanometer metal powder is the copper powder, other materials that can make evenly distributed when mixing, and make the heat resistance of film improve, but this interception formula anti-rust film is owing to having mixed a large amount of nanometer metal powder, lead to its overall structure intensity greatly reduced, and when it was applied to the more equipment of edges and corners on, scratch anti-rust film in the operation process easily, and then lead to anti-rust film's antirust effect to reduce, whole application effect is not good, consequently, need provide a new scheme and solve above-mentioned problem.
Disclosure of Invention
The invention aims to provide a gas-phase antirust film, which solves the technical problem that the integral application effect is poor due to the fact that an antirust film is easy to damage in the actual use process in the prior art, has good structural strength, is not easy to damage in the actual use process, and has good application performance as a whole.
In order to achieve the first purpose, the invention provides the following technical scheme:
a gas-phase antirust film comprises the following components in parts by weight:
110 portions and 130 portions of polyethylene resin;
15-25 parts of low-density polyethylene;
10-15 parts of a vapor phase corrosion inhibitor;
14-20 parts of calcium carbonate;
6-15 parts of white carbon black;
10-30 parts of color master batch;
5-10 parts of vinyl triethoxysilane;
8-15 parts of a plasticizer;
4-8 parts of a dispersing agent;
12-18 parts of ammonia leaching slag powder;
8-20 parts of ethyl borate.
By adopting the technical scheme, gas volatilized by the vapor phase corrosion inhibitor is diffused to the surface of the protected workpiece, and when the gas reaches a certain concentration, the gas forms the protection of inhibiting and inhibiting corrosion on metal, so that the vapor phase anti-rust film has a good anti-rust protection effect on metal equipment such as steel and the like. The vinyltriethoxysilane is a good coupling agent and cross-linking agent, and can enable the gas-phase antirust film to have excellent performances of arene resistance, oil resistance, stress cracking resistance, high mechanical strength, good heat resistance and the like. The calcium carbonate can effectively increase or adjust the toughness of the material, is easy to mix and disperse uniformly, so that the gas-phase antirust film is soft in colloid, and the white carbon black has super-strong adhesion, tear resistance, heat resistance and ageing resistance, so that the gas-phase antirust film can keep good and high quality.
The ammonia leaching residue powder is powdery solid residue after valuable metals are extracted by an ammonia leaching process, elements such as Zr, Zn and the like in the ammonia leaching residue powder can react with corroded iron or sulfate ions in the environment to generate inert oxides or indissolvable compounds, has a chemical anticorrosion effect, and enables a gas-phase antirust film to be difficult to damage. The ethyl borate can improve the friction resistance of the gas-phase anti-rust film, so that the gas-phase anti-rust film is not easy to wear, can play a good role in compounding and synergism with ammonia leaching residue powder, and can promote the crosslinking of a polymer network by utilizing rare earth elements and manganese in the ammonia leaching residue, thereby improving the integral structural strength of the gas-phase anti-rust film.
More preferably, the components of the gas phase anti-rust film also comprise 4-6 parts by weight of functional auxiliary agent, the functional auxiliary agent is mainly obtained by mixing expanded perlite and silicon carbide crystal whiskers, and the weight part ratio of the expanded perlite to the silicon carbide crystal whiskers is (3-5): 1.
By adopting the technical scheme, the expanded perlite is a white granular material with a honeycomb structure inside, has good fire resistance and excellent damp-heat resistance, and is beneficial to enabling the gas-phase antirust film to exert good antirust effect. The silicon carbide whisker has quite good high temperature resistance and high strength, and is corrosion-resistant and wear-resistant, and when the silicon carbide whisker and the expanded perlite are mixed as functional additives, the silicon carbide whisker and the expanded perlite can mutually penetrate to form a high-strength structural layer, so that the gas-phase antirust film is not easy to damage in the actual use process, and the whole film has good applicability.
Further preferably, 4-9 parts by weight of oyster shell powder is also added into the components of the gas-phase anti-rust film.
By adopting the technical scheme, the oyster shell is of a porous and layered structure, the roughness of the surface of the polyethylene material can be improved, the gas-phase anti-rust film is not easy to wear, the unique microstructure of the oyster shell powder can greatly improve the associativity among raw materials of each component, and further the overall structural strength of the gas-phase anti-rust film can be improved. Meanwhile, the oyster shell powder has good biocompatibility and low toxicity to cells, and the overall quality of the gas-phase anti-rust film is greatly improved.
Further preferably, 2-6 parts by weight of nano microcrystalline cellulose is also added into the components of the gas-phase anti-rust film.
By adopting the technical scheme, the nano microcrystalline cellulose is a natural and novel high-strength reinforcing agent, a certain cross-linked three-dimensional network structure can be formed by utilizing the mutual hydrogen bond effect, the integral structure and strength of the gas-phase anti-rust film are improved, the elongation at break of the gas-phase anti-rust film can also be improved by the nano microcrystalline cellulose, the gas-phase anti-rust film is not easy to damage in the actual use process, and the whole film has good applicability.
Further preferably, the vapor phase corrosion inhibitor is any one or a mixture of more of dicyclohexylamine octoate, diethanolamine benzoate, benzotriazole and sodium lignosulfonate.
By adopting the technical scheme, the gas phase corrosion inhibitor can form a gas phase protective layer on the surface of metal, and can well and stably continue the antirust state, thereby having good antirust protection effect on metal equipment such as steel and the like.
More preferably, the plasticizer is any one of dimethyl phthalate, di-n-butyl phthalate and diisononyl phthalate.
By adopting the technical scheme, the plasticizer can keep good and stable structural strength of the gas-phase antirust film, so that the flexibility of the film is enhanced, the film is easy to process, the gas-phase antirust film has good waterproofness and oil repellency, and the whole film has high quality.
More preferably, the dispersant is any one of hydroxyethyl cellulose, zinc stearate and polyethylene wax.
By adopting the technical scheme, the hydroxyethyl cellulose, the zinc stearate and the polyethylene wax are good dispersing agents, and the dispersing agents have good compatibility with other component raw materials, play roles in dispersing and preventing sedimentation, have very excellent external lubricating action and strong internal lubricating action, and further keep good and high quality of the gas-phase antirust film.
The second purpose of the invention is to provide a preparation method of the gas-phase anti-rust film, and the gas-phase anti-rust film prepared by the method has good structural strength, is not easy to damage in the actual use process, and has good applicability as a whole.
In order to achieve the second purpose, the invention provides the following technical scheme, which comprises the following steps:
mixing polyethylene resin, calcium carbonate, white carbon black, a plasticizer, a dispersing agent, ammonia leaching residue powder and ethyl borate in corresponding parts by weight in a mixer, and then adding the mixture into a double-screw extruder for extrusion granulation to obtain a master batch A;
secondly, adding the low-density polyethylene, the vapor phase inhibitor and the vinyl triethoxysilane in corresponding weight parts into a mixer for mixing, and then adding the mixture into a double-screw extruder for extrusion granulation to obtain a master batch B;
and step three, uniformly mixing the master batch A and the master batch B, then adding the corresponding parts by weight of the master batch, uniformly mixing, then adding the mixture into a film blowing machine, and blowing to form a film, thus obtaining the gas-phase anti-rust film.
By adopting the technical scheme, the polyethylene resin is firstly modified and reinforced to obtain the master batch A with higher quality, then the low-density polyethylene is used as a base material to prepare the master batch B with good antirust effect, and finally the master batch A, the master batch B and the master batch are mixed and blown into a film, so that the gas-phase antirust film with good and stable quality can be obtained. Meanwhile, the preparation method is simple to operate, high in production efficiency, free of great pollution to the environment and good in applicability in the actual use process.
In summary, compared with the prior art, the invention has the following beneficial effects:
(1) when the ammonia leaching residue powder and the ethyl borate are mixed for use, a good compounding synergistic effect can be achieved, not only can inert oxides or insoluble compounds be generated, but also a chemical anticorrosion effect is achieved, and the gas-phase antirust film is not easy to damage. The crosslinking of a polymer network can be promoted, so that the integral structural strength of the gas-phase antirust film is improved;
(2) the functional assistant obtained by mixing the expanded perlite and the silicon carbide whiskers is added, and the functional assistant and the silicon carbide whiskers can mutually penetrate to form a high-strength structural layer, so that the gas-phase antirust film is not easy to damage in the actual use process, and the gas-phase antirust film is favorable for exerting a good antirust effect and has good applicability as a whole;
(3) the unique microstructure of the oyster shell powder can greatly improve the associativity among raw materials of each component, and further can improve the integral structural strength of the gas-phase antirust film; the nano microcrystalline cellulose can form a certain cross-linked three-dimensional network structure, so that the integral structure and strength of the gas-phase antirust film are improved, and the gas-phase antirust film is not easy to damage in the actual use process.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example 1: the gas-phase antirust film comprises the following components in parts by weight as shown in Table 1, and is prepared by the following steps:
mixing polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder and ethyl borate in corresponding parts by weight in a mixer, and then adding the mixture into a double-screw extruder for extrusion granulation to obtain a master batch A;
secondly, adding low-density polyethylene, dicyclohexylamine octoate and vinyl triethoxysilane in corresponding weight parts into a mixer for mixing, and then adding the mixture into a double-screw extruder for extrusion granulation to obtain a master batch B;
and step three, uniformly mixing the master batch A and the master batch B, then adding the corresponding parts by weight of the master batch, uniformly mixing, then adding the mixture into a film blowing machine, and blowing to form a film, thus obtaining the gas-phase anti-rust film.
Note: the granulation process parameters are as follows: the speed of a main machine is 30r/min, the feeding speed is 500r/min, the grain cutting speed is 600r/min, the temperature of a first area is 130 ℃, the temperature of a second area is 135 ℃, the temperature of a third area is 145 ℃, the temperature of a fourth area is 160 ℃, the temperature of a fifth area is 148 ℃, and the temperature of a melt is 145 ℃; the film blowing process parameters are as follows: the speed of a main engine is 20r/min, the traction speed is 8m/min, the temperature of a first area is 155 ℃, the temperature of a second area is 160 ℃, the temperature of a third area is 175 ℃, the temperature of a fourth area is 170 ℃, and the temperature of a fifth area is 165 ℃.
Examples 2 to 3: a gas phase rust preventive film was different from example 1 in that the components and their respective parts by weight are shown in Table 1.
TABLE 1 Components and parts by weight of examples 1-3
Example 4: a gas phase rust preventive film which is different from that in example 1 in that dicyclohexylamine octylate in the second step is replaced with diethanolamine benzoate of equal mass.
Example 5: a gas-phase antirust film is different from that in example 1 in that 12.5 parts by weight of dicyclohexylamine octanoate in the second step is replaced by 10 parts of benzotriazole and 2.5 parts of sodium lignin sulfonate.
Example 6: a gas-phase antirust film is different from that in the example 1 in that 12.5 parts by weight of dicyclohexylamine octanoate in the second step is replaced by 8 parts of diethanolamine benzoate, 2 parts of benzotriazole and 2.5 parts of sodium lignin sulfonate.
Example 7: a gas phase rust preventive film which is different from that in example 1 in that dimethyl phthalate in the first step is replaced with di-n-butyl phthalate of an equal mass.
Example 8: a gas phase rust preventive film which is different from that in example 1 in that dimethyl phthalate in the first step is replaced with diisononyl phthalate of an equal mass.
Example 9: a gas phase rust preventive film which is different from that in example 1 in that hydroxyethyl cellulose in the first step is replaced with zinc stearate of an equal mass.
Example 10: a gas phase rust preventive film which is different from that in example 1 in that hydroxyethyl cellulose in the first step is replaced with polyethylene wax of an equal mass.
Example 11: a gas-phase antirust film is different from that in example 1 in that the first step is specifically set to be that polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder, ethyl borate and 6 parts of functional auxiliary agent in corresponding parts by weight are mixed in a mixer, the functional auxiliary agent is obtained by mixing expanded perlite and silicon carbide whiskers in a weight ratio of 4:1, and then the mixture is added into a double-screw extruder to be extruded and granulated to obtain a master batch A.
Example 12: a gas-phase antirust film is different from that in example 1 in that the first step is specifically set to be that polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder, ethyl borate and 4 parts of functional auxiliary agent in corresponding parts by weight are mixed in a mixer, the functional auxiliary agent is obtained by mixing expanded perlite and silicon carbide whiskers in a weight ratio of 3:1, and then the mixture is added into a double-screw extruder to be extruded and granulated to obtain a master batch A.
Example 13: a gas-phase antirust film is different from that in example 1 in that the first step is specifically set up in that polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder, ethyl borate and 5 parts of functional auxiliary agent in corresponding parts by weight are mixed in a mixer, the functional auxiliary agent is obtained by mixing expanded perlite and silicon carbide whiskers in a weight ratio of 5:1, and then the mixture is added into a double-screw extruder to be extruded and granulated to obtain a master batch A.
Example 14: a gas-phase anti-rust film is different from that in example 1 in that the first step is specifically configured in that polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder, ethyl borate and 6.5 parts of oyster shell powder in corresponding parts by weight are mixed in a mixer, and then added into a double-screw extruder to be extruded and granulated, so that master batch A is obtained.
Example 15: a gas-phase anti-rust film is different from that in example 1 in that the first step is specifically set up in that polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder, ethyl borate and 4 parts of oyster shell powder in corresponding parts by weight are mixed in a mixer, and then added into a double-screw extruder to be extruded and granulated, so as to obtain a master batch A.
Example 16: a gas-phase anti-rust film is different from that in example 1 in that the first step is specifically set up in that polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder, ethyl borate and 9 parts of oyster shell powder in corresponding parts by weight are mixed in a mixer, and then added into a double-screw extruder to be extruded and granulated, so as to obtain a master batch A.
Example 17: the difference between the gas-phase antirust film and the embodiment 1 is that the first step is specifically set up to mix polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder, ethyl borate and 4 parts of nano microcrystalline cellulose in corresponding parts by weight in a mixer, and then add the mixture into a double-screw extruder to perform extrusion granulation, so as to obtain a master batch A.
Example 18: the difference between the gas-phase antirust film and the embodiment 1 is that the first step is specifically set up to mix polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder, ethyl borate and 2 parts of nano microcrystalline cellulose in corresponding parts by weight in a mixer, and then add the mixture into a double-screw extruder to perform extrusion granulation, so as to obtain a master batch A.
Example 19: the difference between the gas-phase antirust film and the embodiment 1 is that the first step is specifically set up to mix polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose, ammonia leaching residue powder, ethyl borate and 6 parts of nano microcrystalline cellulose in corresponding parts by weight in a mixer, and then add the mixture into a double-screw extruder to perform extrusion granulation, so as to obtain a master batch A.
Comparative example 1: the difference between the gas-phase anti-rust film and the embodiment 1 is that the step one is specifically set as mixing polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose and ethyl borate in corresponding parts by weight in a mixer, and then adding the mixture into a double-screw extruder for extrusion granulation to obtain a master batch A.
Comparative example 2: the difference between the gas-phase antirust film and the embodiment 1 is that the first step is specifically set up to mix polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate, hydroxyethyl cellulose and ammonia leaching residue powder in corresponding parts by weight in a mixer, and then add the mixture into a double-screw extruder for extrusion granulation to obtain a master batch A.
Comparative example 3: the difference between the gas-phase antirust film and the example 1 is that the first step is specifically set up to mix polyethylene resin, calcium carbonate, white carbon black, dimethyl phthalate and hydroxyethyl cellulose in corresponding parts by weight in a mixer, and then add the mixture into a double-screw extruder for extrusion granulation to obtain a master batch A.
Performance testing
Test samples: the gas phase rust preventive films obtained in examples 1 to 19 were used as test samples 1 to 19, and the gas phase rust preventive films obtained in comparative examples 1 to 3 were used as control samples 1 to 3.
The test method comprises the following steps: selecting test samples 1-19 and control samples 1-3 with the same size, detecting the tensile strength (MPa) of the gas-phase antirust film according to the standard GB/T13022-1991 Plastic film tensile property test method, and detecting the tear strength (kN/m) of the gas-phase antirust film according to the standard GB/T1130-1991 Plastic Right-Angle tear property test method.
And (3) test results: the test results of the test samples 1 to 19 and the control samples 1 to 3 are shown in Table 2. As can be seen from Table 2, the test results of the test samples 1 to 3 and the control samples 1 to 3 are compared, and both the slag dipping powder and the ethyl borate can improve the tensile strength and the tear strength of the whole gas-phase antirust film, and when the slag dipping powder and the ethyl borate are mixed for use, the good compound synergistic effect can be achieved, and the tensile strength and the tear strength of the whole gas-phase antirust film can be greatly improved. The comparison of the test results of the test samples 4-10 and the test sample 1 can be used, the gas phase corrosion inhibitor, the plasticizer and the dispersant disclosed by the invention are all suitable for preparing the gas phase anti-rust film, and the obtained gas phase anti-rust film has good and stable quality. The comparison of the test results of the test samples 11 to 13 and the test sample 1 can be obtained, and the tensile strength and the tear strength of the whole gas phase anti-rust film can be greatly improved by adding the functional assistant obtained by mixing the expanded perlite and the silicon carbide whiskers. The test results of the test samples 14 to 16, the test samples 17 to 19 and the test sample 1 are respectively contrasted to obtain the film, and the tensile strength and the tearing strength of the whole gas phase antirust film can be improved by adding the oyster shell powder and the nano microcrystalline cellulose.
TABLE 2 test results of test samples 1-19 and control samples 1-3
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. The gas-phase antirust film is characterized by comprising the following components in parts by weight:
110 portions and 130 portions of polyethylene resin;
15-25 parts of low-density polyethylene;
10-15 parts of a vapor phase corrosion inhibitor;
14-20 parts of calcium carbonate;
6-15 parts of white carbon black;
10-30 parts of color master batch;
5-10 parts of vinyl triethoxysilane;
8-15 parts of a plasticizer;
4-8 parts of a dispersing agent;
12-18 parts of ammonia leaching slag powder;
8-20 parts of ethyl borate.
2. The gas-phase antirust film according to claim 1, wherein 4 to 6 parts by weight of a functional additive is further added to the components of the gas-phase antirust film, the functional additive is mainly obtained by mixing expanded perlite and silicon carbide whiskers, and the weight part ratio of the expanded perlite to the silicon carbide whiskers is (3-5): 1.
3. The gas-phase antirust film as claimed in claim 1, wherein 4-9 parts by weight of oyster shell powder is further added to the components of the gas-phase antirust film.
4. The gas-phase antirust film according to claim 1, wherein 2 to 6 parts by weight of nanocrystalline cellulose is further added to the components of the gas-phase antirust film.
5. The gas-phase antirust film according to claim 1, wherein the gas-phase corrosion inhibitor is any one or a mixture of more of dicyclohexylamine octoate, diethanolamine benzoate, benzotriazole and sodium lignosulfonate.
6. The gas-phase antirust film according to claim 1, wherein the plasticizer is any one of dimethyl phthalate, di-n-butyl phthalate and diisononyl phthalate.
7. The gas-phase antirust film according to claim 1, wherein the dispersant is any one selected from the group consisting of hydroxyethyl cellulose, zinc stearate, and polyethylene wax.
8. A method for producing a gas phase rust preventive film according to claim 1, characterized by comprising the steps of:
mixing polyethylene resin, calcium carbonate, white carbon black, a plasticizer, a dispersing agent, ammonia leaching residue powder and ethyl borate in corresponding parts by weight in a mixer, and then adding the mixture into a double-screw extruder for extrusion granulation to obtain a master batch A;
secondly, adding the low-density polyethylene, the vapor phase inhibitor and the vinyl triethoxysilane in corresponding weight parts into a mixer for mixing, and then adding the mixture into a double-screw extruder for extrusion granulation to obtain a master batch B;
and step three, uniformly mixing the master batch A and the master batch B, then adding the corresponding parts by weight of the master batch, uniformly mixing, then adding the mixture into a film blowing machine, and blowing to form a film, thus obtaining the gas-phase anti-rust film.
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| CN112175271A (en) * | 2020-10-28 | 2021-01-05 | 苏州特聚新材料科技有限公司 | Barrier antirust film and preparation method thereof |
| CN112266515A (en) * | 2020-10-28 | 2021-01-26 | 苏州特聚新材料科技有限公司 | Composite antirust film |
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