CN105238153A - Anti-cracking marine coating and manufacturing method thereof - Google Patents

Abstract

The invention discloses an anti-cracking marine coating. The coating is prepared by mixing and dissolving chlorinated rubber, chlorinated polyether resin and polyurethane resin, and adding coupling-agent-coated modified nanometer carbon powder and other effective auxiliary agents at the same time; and all the components are uniformly dispersed and draw on each other's strength. Due to the composition of a C-Cl bond with great polarity, hydrolyzing resistance, anti-yellowing performance and wear resistance of the coating are increased and the disadvantages of large brittleness, low toughness, poor adhesion on a substrate material and the like of a chlorinated rubber coating are improved; meanwhile, added metal magnesium powder can significantly improve permeability and electrochemical corrosion resistance of the coating so as to effectively enhance durability and weather resistance of ships. The coating prepared in the invention has excellent adhesion, illumination resistance, ultraviolet resistance, a compact coating layer, anti-cracking performance, no bubbling after long-term soaking in seawater, and long service life.

Description

A kind of freedom from cracking marine finish and preparation method thereof

Technical field

The present invention relates to technical field of coatings, particularly relate to a kind of freedom from cracking marine finish and preparation method thereof.

Background technology

Compared with land natural condition, the bacterium etc. in the impact of the temperature of the ultraviolet in ocean environment, salt fog, temperature and humidity, seawater and flow velocity, dissolved oxygen of seawater and saltiness, wave, the shock of floating matter, marine organisms, ocean bottom soil all can cause the corrosion of steel beam column to some extent.Boats and ships are in the corrosive environment of this harshness for a long time; make steel beam column erosion rate very fast; address this problem and need to develop a kind of novel ship paint in the above position of planking load water line or hull bottom; form the impact that layer protective layer reduces the oceanic climate corrosion of strong variations, and this coating needs to possess following characteristic: good ornamental, resistance to sea atmosphere corrosion, resistance to tanning by the sun property, salt fog resistance, high adhesive force and good snappiness etc.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of freedom from cracking marine finish and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of freedom from cracking marine finish, is made up of the raw material of following weight part: chlorinated rubber 38-42, chlorinated polyether resin 15-17, urethane resin 13-14, carbon nanopowder 4-5, polynite 3-4, ESCALOL 567 2-4, magnesium powder 5-6, anhydrous cupric sulfate 3-4, clorafin 4.3-5.3, bamboo vinegar liquid 7-9, gamma-mercaptopropyltriethoxysilane 8-10, propyl carbinol 15-17, dimethylbenzene 49-52, compact agent 4.2-4.8.

Described compact agent is made up of following raw materials in part by weight: nano titanium oxide 4-5, yttrium element 0.1-0.15, Sodium hexametaphosphate 99 1-2, nano titanium carbide 0.2-0.3, neopentyl glycol 6-8, TriMethylolPropane(TMP) 2-3, vulcabond 3-4, dipropylene glycol 12-13, ethanol 30-40, its preparation method is by neopentyl glycol, TriMethylolPropane(TMP), nano titanium oxide joins in ethanol, be warming up to 60-75 DEG C, dispersed with stirring 40-50 minute, then, add vulcabond, Sodium hexametaphosphate 99, stir 40-60 minute, be warming up to 85-95 DEG C again, add other surplus stock, stir 2-3 hour, cool rear grinding and get final product.

The making method of described a kind of freedom from cracking marine finish, comprises the following steps:

(1) carbon nanopowder is joined in propyl carbinol, ultrasonic disperse 30-50 minute, adds gamma-mercaptopropyltriethoxysilane, is warming up to 85-95 DEG C, add magnesium powder and keep temperature stirring reaction 3-6 hour, be cooled to room temperature and obtain coating modification carbon nanopowder through centrifugation, washing drying;

(2) clorafin, bamboo vinegar liquid are mixed and heated to 120-145 ° of C, are cooled to 60-70 DEG C and add polynite, anhydrous cupric sulfate stirring and evenly mixing, with 600-800 rev/min of grinding distribution 20 minutes;

(3) chlorinated rubber, chlorinated polyether resin, urethane resin and dimethylbenzene being dropped into stirring in high mixer makes it dissolve, add step (1) material high-speed dispersion 2-4 hour, leave standstill 30-50 minute, add step (2) material and other remaining components high speed dispersion 1-2 hour, be ground to fineness with conoidal mill and reach 40 μm of dischargings.

Advantage of the present invention is: the present invention is by chlorinated rubber and chlorinated polyether resin, urethane resin is miscible, add the carbon nanopowder through coupling agent coating modification and other effective auxiliary agent simultaneously, be uniformly dispersed between each composition, mutually learn from other's strong points to offset one's weaknesses, owing to constituting the larger C-Cl key of polarity, not only increase the hydrolytic resistance of coating, it is large that yellowing resistance and wear resistance also improve chlorinated rubber coating fragility, toughness is low, to defects such as the poor adhesive force of base material, and add perviousness and the resistance to electrochemical corrosion energy that metal magnesium powder can significantly improve coating, effective weather resistance and weathering resistance improving boats and ships, the paint adhesion utilizing the present invention to obtain is good, resistance to illumination uvioresistant, the fine and close freedom from cracking of coating, long period of soaking is non-foaming long service life in the seawater.

Embodiment

A kind of freedom from cracking marine finish, is made up of the raw material of following weight part: chlorinated rubber 38, chlorinated polyether resin 15, urethane resin 13, carbon nanopowder 4, polynite 3,2 group oxybenzone 2, magnesium powder 5, anhydrous cupric sulfate 3, clorafin 4.3, bamboo vinegar liquid 7, γ mercaptopropyltriethoxysilane 8, propyl carbinol 15, dimethylbenzene 49, compact agent 4.6.

Described compact agent is made up of following raw materials in part by weight: nano titanium oxide 5, yttrium element 0.1, Sodium hexametaphosphate 99 1, nano titanium carbide 0.3, neopentyl glycol 7, TriMethylolPropane(TMP) 2, vulcabond 4, dipropylene glycol 12, ethanol 37, its preparation method is by neopentyl glycol, TriMethylolPropane(TMP), nano titanium oxide joins in ethanol, be warming up to 60-75 DEG C, dispersed with stirring 40-50 minute, then, add vulcabond, Sodium hexametaphosphate 99, stir 40-60 minute, be warming up to 85-95 DEG C again, add other surplus stock, stir 2-3 hour, cool rear grinding and get final product.

The making method of described a kind of freedom from cracking marine finish, comprises the following steps:

(1) carbon nanopowder is joined in propyl carbinol, ultrasonic disperse 30 minutes, adds γ mercaptopropyltriethoxysilane, is warming up to 85 DEG C, add magnesium powder and keep temperature stirring reaction 3 hours, be cooled to room temperature and obtain coating modification carbon nanopowder through centrifugation, washing drying;

(2) clorafin, bamboo vinegar liquid are mixed and heated to 120 ° of C, are cooled to 60 DEG C and add polynite, anhydrous cupric sulfate stirring and evenly mixing, with 600 revs/min of grinding distributions 20 minutes;

(3) chlorinated rubber, chlorinated polyether resin, urethane resin and dimethylbenzene being dropped into stirring in high mixer makes it dissolve, add step (1) material high-speed and disperse 2 hours, leave standstill 30 minutes, add step (2) material and other remaining component high speed dispersion 1 hour, be ground to fineness with conoidal mill and reach 40 μm of dischargings.

The technical parameter index of the marine finish using the present invention to produce is as follows:

(1) glossiness: 92;

(2) artificial sea water immersion 60d under normal temperature, paint film is non-foaming, do not come off, non-corrosive;

(3) salt fog 720h paint film non-foaming, do not come off, non-corrosive;

(4) the light aging resisting experiment of 700h, coatingsurface flawless, efflorescence and loss of gloss grade all≤1 grade.

Claims (2)

1. a freedom from cracking marine finish, it is characterized in that, be made up of the raw material of following weight part: chlorinated rubber 38-42, chlorinated polyether resin 15-17, urethane resin 13-14, carbon nanopowder 4-5, polynite 3-4, ESCALOL 567 2-4, magnesium powder 5-6, anhydrous cupric sulfate 3-4, clorafin 4.3-5.3, bamboo vinegar liquid 7-9, gamma-mercaptopropyltriethoxysilane 8-10, propyl carbinol 15-17, dimethylbenzene 49-52, compact agent 4.2-4.8, described compact agent is made up of following raw materials in part by weight: nano titanium oxide 4-5, yttrium element 0.1-0.15, Sodium hexametaphosphate 99 1-2, nano titanium carbide 0.2-0.3, neopentyl glycol 6-8, TriMethylolPropane(TMP) 2-3, vulcabond 3-4, dipropylene glycol 12-13, ethanol 30-40, its preparation method is by neopentyl glycol, TriMethylolPropane(TMP), nano titanium oxide joins in ethanol, be warming up to 60-75 DEG C, dispersed with stirring 40-50 minute, then, add vulcabond, Sodium hexametaphosphate 99, stir 40-60 minute, be warming up to 85-95 DEG C again, add other surplus stock, stir 2-3 hour, cool rear grinding and get final product.

2. the making method of a kind of freedom from cracking marine finish according to claim 1, is characterized in that comprising the following steps:

(1) carbon nanopowder is joined in propyl carbinol, ultrasonic disperse 30-50 minute, adds gamma-mercaptopropyltriethoxysilane, is warming up to 85-95 DEG C, add magnesium powder and keep temperature stirring reaction 3-6 hour, be cooled to room temperature and obtain coating modification carbon nanopowder through centrifugation, washing drying;

(2) clorafin, bamboo vinegar liquid are mixed and heated to 120-145 ° of C, are cooled to 60-70 DEG C and add polynite, anhydrous cupric sulfate stirring and evenly mixing, with 600-800 rev/min of grinding distribution 20 minutes;

(3) chlorinated rubber, chlorinated polyether resin, urethane resin and dimethylbenzene being dropped into stirring in high mixer makes it dissolve, add step (1) material high-speed dispersion 2-4 hour, leave standstill 30-50 minute, add step (2) material and other remaining components high speed dispersion 1-2 hour, be ground to fineness with conoidal mill and reach 40 μm of dischargings.