Fengfan Nanometer high anticorrosion protective agent FF-4310

Product Overview

Fengfan Nanometer high anticorrosion protective agent FF-4310 is a two-component liquid coating built on a nanotechnology polymer system. It cures into a hard, ultra-thin film that is strongly hydrophobic and oleophobic, resists most chemicals including organic solvents, and lifts the salt-spray resistance of the part beneath it.

Metal finishers and OEMs use it as the closing step on parts that would otherwise go through a chromate bath. It bonds to glass, ceramics and engineering polymers as well as to steel, aluminium and plated surfaces, so one product covers components a metal-only treatment would miss, and it goes on by spray or brush at room temperature.

Fengfan supplies this protective agent to industrial metal plating operations, automotive and aerospace component makers, shipbuilders, electronics manufacturers and equipment builders in the nuclear and energy sectors — wherever a thin, clean barrier has to hold up against salt, moisture, chemical splash and mechanical wear.

Key Features

• An ultra-thin cured film, approximately 1–5 µm. Protection is added without a heavy build, and the film stays uniform across flat, curved and recessed surfaces.
• Grade 0 adhesion through chemical bonding. The film does not simply sit on the surface — it bonds chemically to the substrate, which is why it holds on smooth glass and moulded polymer as firmly as on steel.
• Resistance to most chemicals. Acids, alkalis and, notably, organic solvents leave the cured film intact, so parts that see solvent wipe-down or chemical splash can be specified with it.
• Thermal stability. It provides a high-temperature protective function and withstands sudden temperature change, so a part that cycles between hot and cold does not come back with a cracked or lifting film.
• Hydrophobic and oleophobic surface. Water and oil do not wet out; the surface stays self-cleaning, sheds dust and salt, and wipes down easily.
• Hardness and scratch resistance. The cured film raises surface hardness, protecting both the coating and the softer substrate during handling, stacking and assembly.
• Liquid, applied by spray or brush. There is no tank to build and no rectifier involved — the product goes on with ordinary spray or brush equipment and forms its film at ambient temperature.

Specifications

Mixing & Application

1. Clean and dry the part. Remove oil, polishing residue, dust and release agents, then dry fully. The film bonds chemically to the surface, so anything left between coating and substrate works against adhesion.
2. Check the substrate. Metals, glass, ceramics and engineering polymers are all suitable. If the part has been treated or coated before, tell us what it carries so we can confirm compatibility.
3. Blend the two components at 4:1. Both are colourless transparent liquids; stir to a uniform mix. Mix only what the job will consume — unlike a metal plating process, there is no tank of solution to hold and analyse between runs.
4. Apply by spray or brush at room temperature. Work to an even, continuous wet film and keep edges, holes and recesses covered. Ordinary spray or brush equipment is all that is needed.
5. Let the film cure at ambient temperature. Handle the part only once the film has reached handling strength, and keep dust off it while it is still wet.
6. Inspect before packing. Check for missed edges, runs and dry spots; the film should be continuous and even across the whole surface.

Coating Chemistry

The film is built by a sol-gel process. Alkoxide precursors hydrolyse and condense on the surface, generating an inorganic network in place and, at the same time, growing an organic network alongside it. Because both networks form together, the cured material behaves neither as a pure glass nor as a pure polymer: it keeps the hardness and chemical inertness of the inorganic side while gaining the flexibility and substrate wetting of the organic side.

That structure is what makes the formulation tunable. The basic skeleton can be selected anywhere between a typical inorganic material and a typical organic one, and the balance shifts by adjusting the organic composition — more organic character for flexibility and wetting, more inorganic character for hardness and chemical resistance. For a specific part, the same chemistry can be pushed toward corrosion protection of a metal surface, toward scratch resistance on a polymer housing, or toward dust and dirt repellency.

Bonding is the second consequence of building the film this way. The sol-gel route creates chemical bonds to the substrate instead of relying on a keyed surface profile, so the film stays put through thermal cycling and mechanical handling rather than depending on a roughness the part may not have.

Applications

• Automotive components. Brackets, fasteners, die-castings and under-hood hardware that used to leave the line after a chromate step; the film is thin enough that fit, thread engagement and torque values are unaffected.
• Aerospace and military equipment. Housings, frames and fittings exposed to salt spray, hydraulic fluid and repeated washdown, where taking a component out of service to re-coat is the expensive part.
• Nuclear and energy plant hardware. Components that are difficult to access once installed and impossible to repaint in place; they are coated before they go in and left to work.
• Metal plating shops. Used as a closing protective step on parts that need a barrier a passivation film alone will not give.
• Retrofits. Where an existing plating process is being rewritten to take chromate out, the coating replaces that stage without adding a tank.
• Glass, ceramic and polymer parts. Windows, insulators, lenses and moulded housings that need water and oil repellency plus easier cleaning, and that cannot take a metal coating.
• On-site and field work. Because the product sprays or brushes on at room temperature, a maintenance crew can recoat a structure, a frame or a piece of harbour equipment where it stands.

Marine & Coastal Protection

Salt air is the hardest test a protective film meets. In marine engineering and coastal infrastructure, metal components sit in a saline atmosphere that attacks edges, welds and fasteners first, and a coating that is merely water-resistant will not hold. This one is hydrophobic at the surface and chemically bonded at the interface, so salt-laden water beads and runs off instead of sitting on the part, and the film acts as a continuous barrier that slows rust progression rather than decorating the surface.

The maintenance cycle is where the saving shows. Salt deposits do not cling to a hydrophobic surface the way they cling to bare or conventionally finished steel, so the surface degrades more slowly and needs less frequent washing. On shipbuilding, offshore platform and harbour equipment programmes, that means fewer access hours, fewer touch-ups and less downtime for scaffolding or lifting gear.

Application matters as much as the film. Because the coating sprays or brushes on at room temperature, a yard can treat a finished structure, a deck fitting or a container frame in place, without dismantling it and without building a heated line to run it through.

Electronics & Precision Instruments

• Circuit elements and connectors. The coating covers populated areas without bridging fine features or changing contact dimensions; the film is thin enough to stay outside the tolerance band of a connector housing.
• Sensor housings and instrument bodies. Moisture ingress and oxidation are the usual failure routes on field instruments, and a hydrophobic, chemically resistant film closes both.
• Transparent, so inspection still works. The cured film is transparent and ultra-thin, so colour coding, laser marking and surface inspection remain readable after coating.
• Applied at ambient temperature. Spray or brush at room temperature fits between assembly and packing, with no bake step to stress solder joints, moulded plastics or seals.
• Fewer field failures. Better adhesion and chemical resistance on the finished assembly reduce oxidation and moisture-related returns, which on high-reliability instruments matters far more than the cost of the coating.

Chromate Replacement

Chromate treatments have been the default corrosion pretreatment for decades, and most shops keep them because requalifying a process is expensive. The pressure to change comes from the bath itself: chromate chemistry brings handling rules, rinse-water treatment and operator-exposure controls that get harder to live with each year.

This product takes a different route. The cured film contains no heavy metals, no fluorine and no phosphorus, so nothing in it carries a chromate-style hazard classification. Coating a part generates no wastewater, no waste residue and no waste gas discharge — the part goes in dry, comes out coated, and there is no rinse stream to treat afterwards.

There is also a step-count argument. On metal surfaces the coating needs no activation and no passivation before it goes on, so two stages drop out of the metal plating process, along with the tanks, the chemicals and the analysis time they consume. Everything runs at room temperature, which removes the heating load a hot chromate bath carries, and the step can sit alongside existing work without new capital equipment.

System Design Benefits

• Tolerance is preserved. Because the film builds only a few microns, a ground diameter, a threaded hole or a mating face stays inside its band after coating; there is no need to re-machine or mask for build-up.
• One coating for a mixed assembly. A metal insert, a polymer housing and a glass window can be coated in the same operation, so a design team does not have to qualify three different surface treatments for one product.
• Fits late in the build. The coating goes on after finishing and after assembly at room temperature, so heat-sensitive parts — solder joints, seals, moulded plastics — are never exposed to a bake.
• No new tank line. Spray or brush application means an existing booth or manual bench can run it; an industrial metal plating plant can add the step without a plating tank, rectifier or dedicated rinse cascade.
• Specified on the drawing, not negotiated later. Film thickness, adhesion grade and chemical resistance give a design engineer something concrete to call out, so protection becomes part of the specification instead of an afterthought.

Operator Efficiency & Cost

For the people running the line, the change is mostly about what disappears. There is no bath to analyse, no brightener to replenish and no rinse cascade to keep in balance — the coating is mixed, applied and left to cure, a much shorter sequence than a metal plating process demands. Operators work with a spray gun or a brush instead of a tank, and a part can be recoated or touched up without a new rack or a new process sheet.

Cleaning is the second saving. A hydrophobic, oleophobic surface does not hold dust, salt or oily film the way a bare or conventionally finished surface does, so parts cleaned before assembly, and equipment washed down on a maintenance schedule, need less of both. Less cleaning means less handling, and handling is where thin protective films usually get damaged.

The cost argument runs over the life of the part rather than the price of the drum. Every step removed from a plating process takes its chemicals, its analysis time and its waste stream with it, and a part that resists corrosion for longer does not come back for rework, replacement or a warranty claim. For a shop already carrying chromate waste treatment and exposure controls, the saving shows up in the effluent and compliance lines as much as on the production floor.

Ordering & Delivery

• Packing. 10 kg/box; 25 kg or 50 kg/bag; 20 kg/25 kg/30 kg/200 kg/drum; 1000 kg/IBC drum. Tell us the pack size that matches your consumption and we will quote against it — the range covers a trial run and a full industrial metal plating operation.
• Minimum order quantity. Varies by chemical and is confirmed with our sales team per order; the figure for this coating is set when you enquire.
• Lead time. 2 weeks for factory production.
• Payment. 100% T/T in advance.
• Shipping. Arranged per the terms agreed in the current contract.
• Documentation. An inspection certificate is issued after delivery stating the batch number and warranty period.
• Safety and transport data. Ask your sales contact for the SDS and the storage and transport guidance that applies in your region before the first shipment.

Technical Support & Model Matching

Choosing the right match is where most sourcing decisions stall. As a trading supplier, we keep one point of contact from first enquiry to after-sales: tell us what you are making and the conditions you work under, and we shortlist the closest matches from our supplier network, compare specifications and arrange samples before you commit to a bulk order. If something does not behave as expected, we work with the supplying partner on the cause and a practical fix, and stay with the case until it is settled. Email, WeChat or WhatsApp enquiries get a reply within 24 hours.

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