阅读说明：本技术 一种气化性防锈母粒及其制备方法和应用 (Gasified antirust master batch and preparation method and application thereof ) 是由 曾永辉 于 2019-11-20 设计创作，主要内容包括：本发明公开了一种气化性防锈母粒及其制备方法和应用,涉及金属防锈材料技术领域。其技术要点是：一种气化性防锈母粒,包括如下重量份数的组分：载体：50-65份；防锈缓蚀剂：10-32份；助剂：18-36份；所述载体为聚乙烯；所述防锈缓蚀剂包括如下重量份数的组分：辛酸：2-8份；葵酸：2-8份；三乙醇胺：4-8份；苯甲酸钠：1-5份；苯并三唑：1-5份。通过采用上述配方制备的防锈母粒具有环保无害、防锈性能好的优点。(The invention discloses a gasified antirust master batch, a preparation method and application thereof, and relates to the technical field of metal antirust materials. The technical key points are as follows: the gasified antirust master batch comprises the following components in parts by weight: carrier: 50-65 parts; antirust corrosion inhibitor: 10-32 parts; auxiliary agent: 18-36 parts; the carrier is polyethylene; the rust-proof corrosion inhibitor comprises the following components in parts by weight: octanoic acid: 2-8 parts; decanoic acid: 2-8 parts; triethanolamine: 4-8 parts; sodium benzoate: 1-5 parts; benzotriazole: 1-5 parts. The antirust master batch prepared by adopting the formula has the advantages of environmental protection, harmlessness and good antirust property.)

1. The gasified antirust master batch is characterized by comprising the following components in parts by weight:

carrier: 50-65 parts;

antirust corrosion inhibitor: 10-32 parts;

auxiliary agent: 18-36 parts;

the carrier is polyethylene;

the rust-proof corrosion inhibitor comprises the following components in parts by weight:

octanoic acid: 2-8 parts;

decanoic acid: 2-8 parts;

triethanolamine: 4-8 parts;

sodium benzoate: 1-5 parts;

benzotriazole: 1-5 parts.

2. The gasified antirust master batch according to claim 1, wherein the auxiliary agent comprises the following components in parts by weight:

fumed silica: 8-15 parts;

calcium stearate: 2-6 parts;

calcium carbonate: 8-15 parts.

3. The gasified antirust master batch of claim 1, wherein the carrier further comprises 10-15 wt% of ferric stearate.

4. The vaporized rust inhibitive masterbatch of claim 3, wherein said carrier further comprises 5-8% by weight of nickel N, N-dibutyldithiocarbamate.

5. The gasified antirust master batch according to claim 1, wherein the antirust corrosion inhibitor further comprises 0.1-0.5 parts of a composite antibacterial agent, wherein the composite antibacterial agent is a carrier-nano silver composite antibacterial agent.

6. The vaporized rust inhibitive masterbatch of claim 5, wherein said carrier is carboxymethyl chitosan.

7. The vaporized antirust masterbatch according to claim 6, wherein the preparation method of the composite antibacterial agent is as follows:

adding 1g of carboxymethyl chitosan into 250mL of deionized water, uniformly stirring, adding 250mL of silver nitrate solution with the concentration of 2mmol/L, stirring and heating to 50-60 ℃, reacting for 1h, cooling to 20-25 ℃, dropwise adding sodium borohydride solution with the concentration of 1mmol/L, stirring and reacting for 0.5h to obtain the carboxymethyl chitosan-nano silver composite antibacterial agent.

8. The method for preparing the gasified antirust master batch according to any one of claims 1 to 7, characterized by comprising the following steps:

(1) mixing the carrier, the antirust corrosion inhibitor and the auxiliary agent at a high speed for 4-5min according to the corresponding weight part ratio to obtain a mixture;

(2) kneading and melting the mixture, then mixing and plasticizing and extruding at the temperature of 150-180 ℃ to obtain the gasified antirust master batch.

9. The use of the vaporized rust preventive masterbatch according to any one of claims 1 to 7, characterized by comprising the steps of:

(1) adding the antirust master batch into the raw materials of the thermoplastic plastics according to the weight ratio of 1:25-50, and fully stirring to prepare mixed particles;

(2) and (3) processing the mixed particles into the gasified antirust film packaging material by film blowing or film spraying.

Technical Field

The invention relates to the technical field of metal antirust materials, in particular to a gasified antirust master batch and a preparation method and application thereof.

Background

In actual production and life, all metals and products are damaged and deteriorated under the electrochemical action with environmental mesons such as oxygen, water and the like in the environment of atmosphere, seawater, soil, chemical engineering, high temperature, humidity and the like to become the corrosion of the metals, and the corrosion of the metals and the products thereof causes huge economic loss in various fields throughout national economy, national defense construction and production and development.

The invention discloses a gas-phase rust-proof stretched film disclosed in the Chinese patent application with the publication number of CN1760026A, which is formed by compounding three or five films with the same thickness into a whole, wherein an inner layer and an intermediate layer contain gasified VCI, and an outer layer contains a PIB tackifier. Wherein the gasified VCI mainly comprises caprylic dicyclohexylamine, nitrous acid dicyclohexylamine or lauric acid dicyclohexylamine, benzoic acid monoethanolamine, sodium nitrite, urotropine, benzotriazole and the like. However, the used antirust master batches are prepared by taking dicyclohexylamine nitrite and sodium nitrite as main antirust components, and the nitrite is a strong carcinogenic substance and has great harm to human bodies in the using process.

Therefore, a new solution is needed to solve the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the gasified antirust master batch which has the advantages of environmental protection, harmlessness and good antirust performance.

In order to achieve the first purpose, the invention provides the following technical scheme:

the gasified antirust master batch comprises the following components in parts by weight:

carrier: 50-65 parts;

antirust corrosion inhibitor: 10-32 parts;

auxiliary agent: 18-36 parts;

the carrier is polyethylene;

the rust-proof corrosion inhibitor comprises the following components in parts by weight:

octanoic acid: 2-8 parts;

decanoic acid: 2-8 parts;

triethanolamine: 4-8 parts;

sodium benzoate: 1-5 parts;

benzotriazole: 1-5 parts.

By adopting the technical scheme, the triethanolamine has alkalescence and can react with the organic acid decanoic acid to generate salt, and the triethanolamine salt is a relatively green and environment-friendly water-soluble corrosion inhibitor and has efficient antirust effect on cast iron materials; triethanolamine and caprylic acid can generate triethanolamine caprylate, which has higher surface activity and is equivalent to common nonionic surfactants, and the triethanolamine caprylate and caprylic acid can reduce the surface activity of each component to play a role in wetting and permeating when added into the antirust master batch; the sodium benzoate is an acidic preservative and can play a certain role in resisting bacteria, inhibiting bacteria and preventing corrosion; benzotriazole has good corrosion inhibition properties for copper and alloys, which secures copper or alloys by forming a triazole ring, thereby exhibiting significant corrosion prevention properties. According to the invention, odorless and nontoxic polyethylene is used as a carrier material, and octanoic acid, decanoic acid, triethanolamine, sodium benzoate and benzotriazole are used as main corrosion inhibitors, so that nitrite is not used, and the prepared antirust master batch has the characteristics of environmental friendliness and good antirust performance.

Further preferably, the auxiliary agent comprises the following components in parts by weight:

fumed silica: 8-15 parts;

calcium stearate: 2-6 parts;

calcium carbonate: 8-15 parts.

By adopting the technical scheme, the calcium stearate is used as a lubricant and a release agent in the antirust master batch, and also plays a role of a halogen absorbent in polyethylene.

More preferably, the carrier further comprises 10-15 wt% of ferric stearate.

By adopting the technical scheme, the ferric stearate is orange red powder, is non-toxic and odorless, can play a role of coloring and photosensitizer when added into the polyethylene carrier, accelerates the degradation speed of the polyethylene after use, and improves the environmental protection property.

More preferably, the carrier also comprises 5-8 wt% of nickel N, N-dibutyl dithiocarbamate.

By adopting the technical scheme, the service time of the anti-rust film is determined by the content of different anti-rust corrosion inhibitors and the service time of the anti-rust film is also determined by different service environments, and the degradation time of the anti-rust film can be controlled by adding a proper amount of nickel N, N-dibutyl dithiocarbamate into the carrier, wherein the nickel N, N-dibutyl dithiocarbamate has the functions of a light stabilizer and an anti-aging agent.

More preferably, the antirust corrosion inhibitor also comprises 0.1-0.5 part of composite antibacterial agent, wherein the composite antibacterial agent is a carrier-nano silver composite antibacterial agent.

By adopting the technical scheme, the silver ions can destroy the breathing and cell division of bacteria, in addition, the silver ions can catalyze the oxygen activation in air and water to generate hydroxyl free radicals or active oxygen ions with strong oxidizing capability, so that the bacteria can be inhibited or killed, and the product can be endowed with stronger antibacterial property by adding the carrier nano silver, so that the antibacterial nano silver antibacterial agent is suitable for environments with higher antibacterial requirements.

More preferably, the carrier is carboxymethyl chitosan.

By adopting the technical scheme, the carboxymethyl chitosan is as nontoxic as chitosan, has good basic performances such as film forming property, degradability and biocompatibility, has good adsorption capacity to metal ion silver due to the existence of amino groups in the chitosan, and can be used as a protective agent to modify the size and the shape of nano silver, so that the composite antibacterial agent with good antibacterial effect is obtained.

More preferably, the preparation method of the composite antibacterial agent is as follows:

adding 1g of carboxymethyl chitosan into 250mL of deionized water, uniformly stirring, adding 250mL of silver nitrate solution with the concentration of 2mmol/L, stirring and heating to 50-60 ℃, reacting for 1h, cooling to 20-25 ℃, dropwise adding sodium borohydride solution with the concentration of 1mmol/L, stirring and reacting for 0.5h to obtain the carboxymethyl chitosan-nano silver composite antibacterial agent.

By adopting the technical scheme, when the carboxymethyl chitosan-nano silver is prepared, a great amount of-NH existing in the carboxymethyl chitosan is mainly utilized₂With Ag⁺The coordination reaction occurs, the macromolecular chains of the carboxymethyl chitosan are stretched to form a porous cavity matrix material, and simultaneously, under the action of heating and stirring, silver ions can enter the internal structure of the carboxymethyl chitosan macromolecules and react with-NH on the molecular chains₂Performing coordination reaction, adding sodium borohydride solution, contacting with silver ion, performing reduction reaction, and adding Ag⁺Reducing the Ag into Ag with antibacterial effect, and having better bactericidal effect.

The second purpose of the invention is to provide a preparation method of the gasified antirust master batch, which has the advantages of environmental protection, harmlessness and good antirust performance.

In order to achieve the second purpose, the invention provides the following technical scheme:

a preparation method of gasified antirust master batch comprises the following steps:

(1) mixing the carrier, the antirust corrosion inhibitor and the auxiliary agent at a high speed for 4-5min according to the corresponding weight part ratio to obtain a mixture;

(2) kneading and melting the mixture, then mixing and plasticizing and extruding at the temperature of 150-180 ℃ to obtain the gasified antirust master batch.

The third purpose of the invention is to provide the application of the gasified antirust master batch, wherein the antirust master batch is used as a main raw material, and thermoplastic plastics are added for kneading, melting and film blowing to prepare the gasified antirust film packaging material, and the gasified antirust film packaging material has the advantages of safety, environmental protection, good antirust performance and strong antibacterial property.

In order to achieve the third purpose, the invention provides the following technical scheme:

the application of the gasified antirust master batch comprises the following steps:

(1) adding the antirust master batch into the raw materials of the thermoplastic plastics according to the weight ratio of 1:25-50, and fully stirring to prepare mixed particles;

(2) and (3) processing the mixed particles into the gasified antirust film packaging material by film blowing or film spraying.

In summary, compared with the prior art, the invention has the following beneficial effects:

(1) according to the invention, odorless and nontoxic polyethylene is used as a carrier material, and octanoic acid, decanoic acid, triethanolamine, sodium benzoate and benzotriazole are used as main corrosion inhibitors, so that nitrite is not used, and the prepared antirust master batch has the characteristics of environmental friendliness and good antirust performance;

(2) according to the invention, the composite antibacterial agent is added into the antirust master batch, so that the prepared antirust film has an antibacterial effect, and when the antirust film is used, mould and harmful bacterial colonies are almost not bred in a sealed space formed by the antirust film, so that an antirust piece does not grow harmful bacteria;

(3) the carboxymethyl chitosan is used as a carrier, is nontoxic and good in film forming property, can be degraded, and has good adsorption capacity on silver ions, so that the prepared composite antibacterial agent has an excellent antibacterial effect.

Drawings

FIG. 1 is a flow chart of the preparation process of the gasified antirust master batch.

Detailed Description

The invention is described in detail below with reference to the figures and examples.