Application Prospect of Nanomaterials in Ship Coatings

Nanomaterials have great application space in the field of naval ship equipment, and ship coating is one of the important application directions.

First, stealth coating

A very important role of ship coatings is as part of the stealth material of the ship. The special effects of nanomaterials provide new ways and new absorbing mechanisms for stealth materials. According to research, nano-multilayer composite films (including multilayer particle film, inorganic/organic multilayer composite film, metal/dielectric multilayer composite film, etc.) are expected to be new materials for preparing high-strength and microwave absorption with certain bandwidth. A company in the United States uses an ultra-fine ceramic ball powder in a protective coating for equipment that provides the invisibility of the equipment and can be applied to electronic equipment to deal with electrical interference. The absorption rate for radar waves is up to 99%, while the thickness is only micron.

The composite powder of nano-alumina, iron oxide, silicon oxide and titanium oxide has strong absorption properties in the mid-infrared band, and the composite has good shielding effect on the infrared detector of the band. . Adding such materials to the coating has excellent absorption of radar waves, good absorption and dissipation of infrared rays, and obvious stealth function.

The key technology of submarine camouflage coatings is the wet reflectivity and aging resistance of the coating. The use of nanoscale dark pigments such as carbon black, iron black and other dark pigments may be one of the effective ways to reduce the wet reflectance and aging resistance of camouflage coatings.

Second, the hull paint and the bottom antifouling coating

The agglomerate of nano-silica is an amorphous white powder with a three-dimensional network structure on the surface. It has strong ultraviolet absorption and infrared light reflection characteristics, which can improve the anti-aging performance of the coating. Nano titanium dioxide also has the effect of absorbing ultraviolet rays, which can improve the aging resistance of the coating. They are both essential additives for the development of super weather resistant hull paints.

Marine antifouling coatings have always been one of the most special and most difficult materials in marine coatings. Due to the increasing emphasis on environmental protection in countries around the world, the time limit for the total ban on the use of organotin antifouling agents is a certain time. The development of new and efficient antifouling agents has become the focus of researchers in marine paints in various countries. The use of nano-scale antifouling agents, such as nano-sized cuprous oxide, nano-zinc oxide, etc., may be an effective way, or micro-capsule technology, using a water-soluble resin material to coat the nano antifoulant fine powder to form particles, Reconstituted in the coating, in practical applications, the microcapsules gradually dissolve due to the action of seawater, and the antifouling agent is slowly and effectively released to achieve a stable and long-lasting antifouling function.

Third, antibacterial coating

Nano-materials such as nano-titanium dioxide and nano-zinc oxide can be used as an antibacterial agent which is non-toxic to the human body, has a wide antibacterial range and excellent thermal stability. Non-metallic materials and coatings used in ship cabins are prone to mold and contamination due to the often polluted environment in humid and small spaces, especially in subtropical and tropical marine environments. The antibacterial action of nano materials can be utilized to prepare new high-efficiency antibacterial and mildewproof materials and coatings in the cabin.

Fourth, ship flame retardant coating

The fire protection capability of a ship is a key factor affecting the safety of the ship, especially the combat effectiveness and survivability of the ship. Some nano particles have flame retardant functions. For example, nano zinc oxide can be added as a flame retardant to ship cabin interior materials or formulated into a flame retardant coating to improve the fire resistance of non-metallic decorative materials and flame retardant coatings.

[Follow the WeChat public number "Jiuzheng Coating Network"; pay attention to surprises, scan code to see "what is the paint sales? Absolutely! 》九正涂料网交流群]

PA plastic (nylon, Polyamide), English name: Polyamide,mainly have ESD PA SHEET,CONDUCTIVE PA SHEET,PA GF SHEET,FIREPROOF PA SHEET.PA66 plastic material is a translucent or opaque milky white crystalline polymer with plasticity.The main varieties in nylon are nylon 6 and nylon 66, nylon 6 for polycaprolactam, and nylon 66 for hexamethylene diamine, and nylon 66 is hard l2%.

Model USES:

PA66 USA's first no21 SPC highly rigid chemical resistance

PA66 United States first norr513h R533H Glass Fiber reinforced, high strength, special thermal stability, resistance to hydrolysis.

Through FDA and UL certification.

Through GM, Ford, Chryster, Delphi, Valeo and other automotive certifications, it is applicable to auto parts.

Mechanical parts, etc.

PA66 Germany basf A3X2G5 A3X2G7 glass fiber reinforced, red phosphorus flame retardant long-term stability, with excellent mechanical properties.

PA66 plastic raw material of Germany basf A3EG6 A3HG5 A3EG7 A3WG6 glass fiber reinforced with mechanical components that require high rigidity and dimensional stability.

PA66 Germany basf C3U high toughness without halogen and phosphorus flame retardant grade.

PA66 - basf A3K high fluidity for high stress engineering components such as bearings, gears and connectors.

PA66 American dupont 101F is a special grade for good heat resistance products.

PA66 plastic raw material American dupont 101L high strength injection molding improved machine feeding and stripping characteristics.

PA66 American dupont 408 hs injection molding grade good stability.

The PA66 American dupont 408L is suitable for high impact impact engineering products.

PA66 plastic material American dupont 42A color, high viscose silk, molecular weight distribution, can be welded to ultrasonic.

The PA66 American dupont 70G13L 70G13L glass fiber reinforced 13% high strength.

PA66 American dupont 70G33L 70G33L high strength glass fiber increased 33%.

PA66 plastic raw materials USA dupont 70G43L high strength 43% glass fiber reinforced.

The PA66 American dupont 80g33hs1-l ultra high impact fiberglass enhanced 33% super strength.

PA66 plastic raw material United States dupont FR15 FR50 FR60 glass fiber reinforced halogen-free flame retardant grade UL94 V-0

PA66 USA dupont ST801 super toughness excellent impact resistance.

Advantages:

1. High strength and stiffness;

2. High impact and notching impact strength;

3. High heat deflection temperature ;

4. Good at dempening;

5. Good glide and limp home characters;

6. Good chemical stability against organic solvents and fuels;

7. Resistant to thermal aging (applicable temperature between -40°C and 90°C;

8. Size alternation by humidity absorption must be considered;

Disadvantages:

1. The water absorption rate of nylon can be as high as 9%;

2. Physical stability is sensitive to temperature and humidity;

3. Dimensional stability is sensitive to temperature and humidity.

Application:

1. Nylon is widely substituted for wear parts of mechanical equipment, or used as quick-wear parts

    of equipment instead of copper and alloy;

2. Shaft sleeve, bearing bush, lining, lining plate, gear;

3. Worm gear, roller copper guide rail, piston ring, seal ring, slide block;

4. Spheric bowl, impeller, blade, cam, nut, valve plate,

5. Pipe, stuffing box, rack, belt pulley, pump rotor, etc.

Combustion characteristics: Flame upper yellow, lower end blue, post-combustion plastic dribbling, blistering, special wool after fire, burning of nails and celery.

Specification: the thickness of PA/Nylons Plastic sheet material can be produced from 0.3mm to 1.9mm, the normal width is 600mm, the width cannot exceed 1200mm, the length is not limited.
The thickness of plate can be produced from 2mm to 180mm, the usual specification of 2-10mm is 1000mm* 2000mm, and the commonly used specification of 10-180mm is 600*1200 mm. PA/Nylons Plastic can also be customized according to requirements, and the width cannot exceed 1200mm, and the length is not limited.and The diameter of the PA/Nylons Plastic rod can be produced from 2mm to 250mm, the length is 1 meter, and it can be ordered to be more than 3 meters in length.

Color: Black ,white beige and blue, can also be made another color, and the color order is 500KG.

Modified varieties: can be added to the glass fiber, copper powder, and molybdenum disulfide enhancement plate according to customer's requirements.
Add antistatic agent to the permanent plate, the volume resistance value of 10 to the 6 to 9 power.
Add flame retardant to the flame retardant board from UL 94v-0 to HB combustion grade, and other modification requirements are required to customize various additional properties according to the actual use of the customer.

Product certification: most environmental certification reports and safety reports for raw materials, such as SGS report, CTI report, UL report, MSDS safety information, etc.

PA/Nylons Plastic Sheet

PA Plastic Sheet,Nylon Plastic Sheet,Conductive Plastic Sheet,Polyamide Nylon Sheet

Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com