Ion-exchanged Silica
Anti-corrosion Pigments
As the new generation anti-corrosion pigment with efficient, non-toxic, no heavy metal, ion-exchanged modified silica is the smart choice to respond to the high requirements of environmental protection.
- A variety of modified products: meet different application requirements
- Best performance: Neutral salt spray test, MEK resistance, acid and alkali resistance
- Better processing performance: No grinding required, good dispersibility, suitable for thin film system
Silica Anti-corrosion Pigments
- Main raw material: Amorphous silica
- Other function materials: Calcium Oxide etc.
- Characteristic: Ion-exchange, calcium oxide-modified silica, non-toxic and free heavy metal.
- Appearance: white, non-crystalline powder
- R&D background: to replace traditional anti-corrosion pigments, such as zinc phosphate, strontium chromate, etc., to cope with increasing environmental problems and regulatory restrictions
- Application: general industrial paints, coils, automotive coatings, home appliance panels, etc.
Testing Data of Silica Anti-corrosion Pigments
We have used a variety of different anti-corrosive pigments, and do the salt spray resistance tests under the same experimental conditions.
So that the experimental results and various properties can be displayed cleanly.
Conditions of the comparative experiment:
- Experimental standard: GB/T 2423.17, IEC 60068-2-11, neutral salt spray test；
- Coating System: Epoxy resin, 2-pack system, water-based paint；
- Coating parameters: film thickness 50~60 μm, single-layer primer, cold-rolled thick steel plate, 8% anti-corrosion pigment addition；
| HHC Silica Anti-corrosion pigment | Zinc phosphate products | |
| Corrosion resistance | •Higher efficiency and lower addition; •And more durable corrosion protection, through the salt spray test, reaching more than 1000 hours of protection time (up to 1900 hours or more) | •High addition; •The salt spray test is generally within 600 hours, even for the modified zinc phosphate series, it isn’t easy to reach a higher level |
| Suitability | •Suitable for 2-park systems, solvent-borne systems •Particularly suitable for waterborne systems | •Suitable for 2-park systems, solvent-borne systems •Poor performance in waterborne systems |
| Cost | •Low price, about the same level as zinc phosphate | •The market has widely accepted it, and the market has a high tolerance for the price |
| Environmental and regulations | •Non-toxic and harmless to the human body •Does not contain toxic substances, heavy metals, and phosphoric acid substances •Easy to pass mandatory certification | •It is a phosphoric acid product. Although there are no restrictions in some countries, as the regulations become more and more stringent, the restrictions will increase and there will be risks. |
- Zinc phosphate products perform generally in water-borne coatings;
- The anti-corrosion performance of MS 775 is the same as that of traditional zinc phosphate products, but MS 775 is a non-toxic and environmentally friendly product, and the price is cheaper;
- The corrosion resistance of MS 730 is better than that of traditional zinc phosphate products because it contains more calcium ions;
- If you prefer a cost-effective solution, you can use MS 775 instead of zinc phosphate products; if you prefer high corrosion resistance, you can use MS 730 instead of zinc phosphate products;
| HHC Silica Anti-corrosion pigment | Other Brands such as GRACE | |
| Corrosion resistance | •Same corrosion resistance and same salt spray test results | •Excellent anti-corrosion ability, as a new generation of anti-corrosion pigments, it is unique in some application fields; |
| Suitability | •The applicability is consistent with GRACE, and a 1:1 equivalent replacement is available. •Due to the excellent modification process, some models have the characteristics of pH neutrality or weak acidity and can get rid of the shackles of acid catalysts in some situations. | •Wide range of applicability, good performance for solvent-based systems, waterborne systems, primers, and 2-pack systems |
| Cost | •Only half of the price of GRACE or lower, it can completely replace traditional anti-rust pigments, and the customer’s use cost will be more flexible | •Expensive, many customers have to actively reduce the amount added or use modified traditional products |
| Environmental and regulations | •The same environmental protection features as GRACE products; | •Excellent environmental protection properties, non-toxic and non-polluting •Meet stringent regulatory requirements |
- MS 780 has the same corrosion protection as GRACE AC5;
- The anti-corrosion ability of MS 730 is slightly inferior, but it is still surprising. The product positioning corresponds to GRACE C 303/CS311;
- Compared with other products and models, MS 780 and AC 5 have the best corrosion resistance;
- Test results show that: Whether it is HHC or GRACE, 650 hours of the test result is not their limit,
Features & Applications
Features: Environment protection, no heavy metals, low oil absorption, easy to disperse, not easy to foam, long-lasting protection;
Application: Home appliance panels, Metal coils, Construction Machinery, Containers, ships, bridges, etc.
Chemical Protection:
Resist acid corrosion, Anti-corrosion pigments modified with calcium ions will react with water molecules and hydrogen ions seep into the coating film. It will generate hydroxide ions and release calcium ions, to keep the pH value-neutral or alkaline, avoid the metals for acidic hydrogen evolution corrosion, and reduce the coating films’ bulge phenomenon.
Physical Protection:
When metals have corrosion, the anode generates iron or ferrous ions, and the cathode generates hydroxide ions. Hydroxide ion will react with silica and release silicate ion, the hydroxide will react with iron ion or calcium ion to generate silicate and cover the surface of the metal to bring an inert protective layer, thereby, the electrochemical reaction of the metal is further prevented, and the corrosion is prevented from continuing to occur effectively.
Reaction Flow of Produce
Why Choose Silica Anti-corrosion Pigments from HHC?
In the past 4 years, we have survived in the most competitive Chinese market in the world! And rely on high-quality products to beat a lot of competitors, including many well-known brands; with the expansion of our business, we will open to the global market, bringing more value to customers!
- ISO quality factory. Our production workshop strictly abides by international standards, which can ensure product quality stable;
- Focus brings professionalism. Chemical raw materials have many branches and systems, but we only focus on the R&D of silica products, and use the characteristics of silica to discover more features and applications;
- Rich application experience. We have our own application testing team, which can help customers to test the final effect together and reduce the formulation cycle;
Customer Service
Technology serves the business,
Service doesn’t end with delivery!
- Assist customers to solve technical problems
- Provide customers with product selection suggestions, and physical &chemical analysis suggestions.
- Provide customers with stable product supply, and offer test reports and quality assurance for each batch of shipments
- Actively solve other problems in customers’ production process.
The Ultimate FAQ Guide
Anti-corrosion pigment appearance is a white powder, the main ingredient is Ion-exchanged amorphous silica, it’s non-toxic, has no heavy metals, and accords with present and future environmental regulations. The anti-corrosion pigment with ion-exchanged processing has a very high value of the specific surface area, high reactivity, calcium ions can exchange with hydrogen ions entering the coating film, release calcium ions, and maintain the coating film to be weakly alkaline, and can weakly release silicate ions that have the effect of inhibiting corrosion. Silicate ions can combine with metal ions to make a protective layer to protect the steel substrate, reduce corrosion and extend the service life. It is used in the preparation of anti-corrosion coatings, and it is a new variety of non-toxic anti-rust pigments developed in recent years.
Our customer service team is available 24/7. If you can provide us with more details about your requirements and application, our technical team will provide a suggestion for the models, percentage added, and surface treatment suggestions.
And the sample is free.
Except for the sample, if you want to do testing production, it is available that we provide the testing products within low MOQ.
Moreover, if the quantity is less we will consider offering the testing products for free.
Regarding the regular purchase order, the MOQ is flexible, and our sales will offer you a FOB or CIF price as referred.
First, we are the ISO quality certification factory and will do inspection periodic;
Second, before we ship the goods, we do product testing and offer a warranty commitment for the customer, to make sure all the products’ quality is under the control.
Yes, we can use your trademark and model in the design of the packaging, or provide neutral packaging with blank information;
Of course, this service has some requirements, if you are interested in OEM transactions, please contact us;
