1. An automobile chassis antirust wax is characterized in that: the composition comprises the following components in percentage by mass: 30-45% of modified vegetable oil, 10-15% of raw material wax, 20-40% of base oil, 10-20% of modified resin, 10-20% of thixotropic agent, 0.1-0.4% of drier and 1-2% of coloring agent.

2. The automobile chassis antirust wax as claimed in claim 1, wherein: the composition comprises the following components in percentage by mass: 34-40% of modified vegetable oil, 12-14% of raw material wax, 25-35% of base oil, 12-18% of modified resin, 12-18% of thixotropic agent, 0.2-0.3% of drier and 1.1-1.9% of coloring agent.

3. The automobile chassis antirust wax according to claim 2, characterized in that: the modified plant is one or more of oil polymerized linseed oil, polymerized soybean oil, dehydrated castor oil or tung tree polymerized oil.

4. The automobile chassis antirust wax according to claim 2, characterized in that: the raw material wax is one or a mixture of more than two of paraffin wax, 90# microcrystalline wax or polyethylene wax.

5. The automobile chassis antirust wax according to claim 2, characterized in that: the base oil is one or a mixture of more than two of industrial white oil, 60N base oil, 150SN base oil, 10# machine oil or 32# machine oil.

6. The automobile chassis antirust wax according to claim 2, characterized in that: the modified resin is one or a mixture of more than two of maleic resin, rosin modified phenolic resin, polyamide modified phenolic resin, asphalt resin or coumarone resin.

7. The automobile chassis antirust wax according to claim 2, characterized in that: the thixotropic agent is one or a mixture of more than two of fumed silica, thixotropic calcium sulfonate, fatty acid polyamide wax, magnesium aluminum silicate or nano calcium carbonate.

8. The automobile chassis antirust wax according to claim 2, characterized in that: the drier is one or a mixture of more than two of zinc isooctanoate, cobalt isooctanoate, calcium isooctanoate, zinc naphthenate and manganese isooctanoate.

9. The automobile chassis antirust wax according to claim 2, characterized in that: the coloring agent is oily carbon black color paste.

10. A preparation method of the antirust wax for the automobile chassis is characterized by comprising the following steps: the preparation method comprises the following steps:

step 1: adding raw material wax and base oil into a reaction vessel, heating to 105-110 ℃, and uniformly stirring;

step 2: and continuously adding the modified resin into the reaction container to completely dissolve the modified resin, stirring for 30min, adding the modified vegetable oil, adding the thixotropic agent when the temperature is reduced to 60 ℃, stirring for 10min, adding the drier and the oily coloring agent, and continuously stirring for 10min to prepare the automobile chassis antirust wax.

Background

The automobile chassis consists of four parts, namely a transmission system, a running system, a steering system and a braking system. The chassis is used for supporting and mounting the automobile engine and all parts and assemblies thereof, forming the integral shape of the automobile and receiving the power of the engine to enable the automobile to move and ensure normal running. The most common and serious of the main factors affecting the service life of metal parts of the automobile chassis is corrosion damage. The coating of the anti-rust wax is an important mode for the corrosion prevention of the automobile chassis and is also an important supplement for the electrophoresis corrosion prevention of the automobile, and the constructed anti-rust wax becomes a part of the automobile body for a long time.

Although the traditional solvent type chassis antirust wax has better workability and good corrosion resistance, the traditional solvent type chassis antirust wax is inflammable and has high VOC (volatile organic Compounds) emission; the water-soluble antirust wax takes water as a solvent, VOC is not released any more in the construction process, the flash point of the product is greatly improved, and the influence of the humidity and the temperature in the environment is easily caused.

Disclosure of Invention

The invention aims to provide a low-odor multifunctional high-solid-content antirust wax for an automobile chassis and a preparation method thereof.

In order to achieve the purpose, the invention provides the following technical scheme: the antirust wax for the automobile chassis comprises the following components in percentage by mass: 30-45% of modified vegetable oil, 10-15% of raw material wax, 20-40% of base oil, 10-20% of modified resin, 10-20% of thixotropic agent, 0.1-0.4% of drier and 1-2% of coloring agent.

Preferably, the composition comprises the following components in percentage by mass: 34-40% of modified vegetable oil, 12-14% of raw material wax, 25-35% of base oil, 12-18% of modified resin, 12-18% of thixotropic agent, 0.2-0.3% of drier and 1.1-1.9% of coloring agent.

Preferably, the modified plant is one or a mixture of more than two of oil polymerized linseed oil, polymerized soybean oil, dehydrated castor oil or tung tree polymerized oil.

Preferably, the raw material wax is one or a mixture of more than two of paraffin wax, 90# microcrystalline wax or polyethylene wax.

Preferably, the base oil is one or a mixture of more than two of industrial white oil, 60N base oil, 150SN base oil, 10# machine oil or 32# machine oil.

Preferably, the modified resin is one or a mixture of two or more of a maleic acid resin, a rosin-modified phenol resin, a polyamide-modified phenol resin, an asphalt resin, and a coumarone resin.

Preferably, the thixotropic agent is one or a mixture of more than two of fumed silica, thixotropic calcium sulfonate, fatty acid polyamide wax, magnesium aluminum silicate or nano calcium carbonate.

Preferably, the drier is one or a mixture of more than two of zinc isooctanoate, cobalt isooctanoate, calcium isooctanoate, zinc naphthenate and manganese isooctanoate.

Preferably, the coloring agent is oily carbon black color paste.

A preparation method of the antirust wax for the automobile chassis comprises the following steps:

step 1: adding raw material wax and base oil into a reaction vessel, heating to 105-110 ℃, and uniformly stirring;

step 2: and continuously adding the modified resin into the reaction container to completely dissolve the modified resin, stirring for 30min, adding the modified vegetable oil, adding the thixotropic agent when the temperature is reduced to 60 ℃, stirring for 10min, adding the drier and the oily coloring agent, and continuously stirring for 10min to prepare the automobile chassis antirust wax.

The invention has the beneficial effects that: an antirust wax for chassis of car is prepared from the oil system, and features excellent hydrophobicity, no influence of humidity in environment, and no demulsification of water-base product. Compared with solvent-based chassis wax, the solid content of the wax close to 100 percent greatly reduces VOC emission, and improves environmental protection and safety; the modified vegetable oil, the base oil and the modified resin are mixed to be used as the film forming agent, only slight vegetable oil smell is generated, the metal surface is protected after the film is formed, corrosion is effectively prevented, the reaction of the film forming agent and oxygen in the air is accelerated by the drier, rapid surface drying and slow actual drying are ensured, and therefore a rapid process beat is kept; the thixotropic agent improves the thixotropy and the leveling property of the wax, and ensures the construction performance and the uniformity of film formation; the raw material wax improves the adhesive force and the antirust property of the wax film. The low-odor, multifunctional and high-solid-content automobile chassis antirust wax disclosed by the invention has the advantages of good high temperature resistance, low temperature resistance and water resistance, excellent salt mist resistance, excellent moisture and heat resistance, better acid resistance and alkali resistance, certain self-repairing and damping resistance, and capability of effectively preventing the automobile chassis from overlooking.

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

step 1: adding raw material wax and base oil into a reaction vessel, heating to 110 ℃, and uniformly stirring;

step 2: and continuously adding the modified resin into the reaction container to completely dissolve the modified resin, stirring for 30min, adding the modified vegetable oil, adding the thixotropic agent when the temperature is reduced to 60 ℃, stirring for 10min, adding the drier and the oily coloring agent, and continuously stirring for 10min to prepare the automobile chassis antirust wax.

In this embodiment: the antirust wax comprises the following components in percentage by mass: 30% of modified vegetable oil, 15% of raw material wax, 32% of base oil, 10.1% of modified resin, 10% of thixotropic agent, 0.4% of drier and 1.5% of coloring agent;

modified vegetable oil: 10 percent of polymerized linseed oil and 20 percent of polymerized soybean oil

Raw material wax: 90# microcrystalline wax 15%

Base oil: 60N base oil 5%, 150SN base oil 27%

Modified resin: 2 percent of polyamide modified phenolic resin, 7.5 percent of asphalt resin and 0.6 percent of coumarone resin

Thixotropic agent: 2 percent of gas-phase silicon dioxide, 3 percent of fatty acid polyamide wax and 5 percent of nano calcium carbonate

A drier: 0.1 percent of calcium isooctanoate, 0.3 percent of manganese isooctanoate,

dyeing agent: 1.5 percent of oily carbon black color paste

Example 2:

step 1: adding raw material wax and base oil into a reaction vessel, heating to 105 ℃, and uniformly stirring;

step 2: and continuously adding the modified resin into the reaction container to completely dissolve the modified resin, stirring for 30min, adding the modified vegetable oil, adding the thixotropic agent when the temperature is reduced to 60 ℃, stirring for 10min, adding the drier and the oily coloring agent, and continuously stirring for 10min to prepare the automobile chassis antirust wax.