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The deterioration of metals caused by the environment and medium is very common. The destruction of most metal articles is related to corrosion factors except for a few precious metals such as Au and Pt. Metal corrosion causes huge losses to society, therefore, anti-corrosion has become a critical issue that must pay attention to.


Corrosion is one of the major causes of damage to metal products, specialized anti-corrosion solutions should be applied to prolong the life cycle of metal products according to the feature that metal products are easily corroded. Chemical, physical, and electrochemical protection are the most common methods.

Corrosion can be categorized into five types, general corrosion, pitting, intergranular corrosion, selective corrosion, and stress corrosion cracking. General corrosion affects the entire surface of a metal, commonly known as rust. Pitting occurs in the small holes on the surface of the material, and these holes become larger over time. Intergranular corrosion is almost invisible on the surface as it takes place inside. Selective corrosion erodes only components of complex materials. This type of corrosion starts from the surface and then penetrates to the interior and corrodes at different speeds. Stress corrosion cracking happens when the material bears the ultimate tensile strength.

Four Common Anti-Corrosion Methods:

Structural Reforming

Some heavy metals are low chemical active and not easily corroded, so the service life of the compound metal is extended with a great margin when adding heavy metals to other metals. People mix nickel, chromium, etc. with steel to make stainless steel, for instance.

Protective Layer

There are two types of protective layers metal and non-metal. Common non-metal layers include oil paint, ceramic, and plastic coatings. Electroplating and hot plating generally use non-corrosive metals, such as zinc, tin, chromium, or nickel to form an oxide film on the surface.

Electrochemical Protection

Electrochemical protection is a method based on the galvanic cell theory by eliminating the galvanic cell reaction which is the cause of chemical corrosion. The cathodic method is more widely used than the anodic method.

Corrosive Medium Treatment

This method is achieved by eliminating corrosive medium. In other words, keeping the metal machinery dry, to name a couple, wiping off the moisture on the equipment, or adding a corrosion inhibitor to corrosive medium.

Powder-coating is to coat powdered paint on the workpiece with an electrostatic spray molding machine. The powder will be evenly attached to the surface in the electrostatic field. Final layers vary in effects according to different paint. The thickness reaches up to 60 microns after high-temperature drying, leveling, and curing, which makes the product surface flat and smooth with strong acid resistance, alkali resistance, and wear resistance, and can withstand long term UV radiation and acid rain without coating pulverization, fading, and falling off.

Powder coating is better than paint spraying in terms of mechanical strength, adhesion, corrosion resistance, aging resistance. The cost is also lower for the same effect. Powder-coating characteristics

  • The final film is flat and smooth with very strong adhesion and excellent decoration performance, under the influence of electrostatic effect.
  • Electrostatic adsorption reduces paint mist pollution and improves the workshop’s hygiene condition.
  • Reduces cost by increasing paint utilization.

Powdered paint

The paint is produced by processing hot extrusion, grinding, and sieving with a mix of specialized resin, pigment, fillers, curing agents, and other additives in certain proportions. It is a solid fine powder that is completely different from coatings in general, very stable at room temperature.

Recycled plastic is one of the waste plastics, stands for the plastics made from the waste products that have been used, abandoned, cleaned, crushed in civil, industrial, and other uses. In a broad sense, recycled plastics refer to any reuse of leftover materials or waste products. Recycled plastics can be added/not added with fillers, plasticizers, stabilizers, or colorants, etc.

The recycling of plastics is a very important direction of research on renewable resources in recent years. Especially the after-used waste plastics are the major focus of recycling. Generally speaking, all thermoplastics can be recycled, but there are many plastic products with a surface treatment that are very difficult to recycle. At present, most recycled products are limited to a very small portion of the product like plastic bottles and CDs.

Problems Caused by Waste Plastics and the Status Quo of Recycling

Plastic products not only bring convenience to human beings but also bring great “side effects”. Waste plastics don’t degrade naturally, with the increasing use of plastics, results in serious environmental pollution. Recycling has illuminated a new direction for waste plastic treatments. Countries have invested a lot of labor and material resources, and through legislation to develop plastic recycling technologies.

Significance of Plastic Recycling

Waste plastics from the huge use of plastic products in life and industry have caused serious environmental issues and contains a great potential for renewable resources. Petroleum and coal resources are not renewable and in short supply, but almost all thermoplastics have recycling value. Therefore, from the perspective of saving natural resources and protecting the environment, the development and innovation of plastic recycling methods and technologies will become a focus in the future.

Canaan Site Furnishings, as the leading provider of public site furniture in North America, actively and initiatively take our corporate social responsibility and strive to popularize environmental-friendly products in the market.

What is “green wood”? As the name suggests, “green wood” is an environmental-friendly material made of wood and the products have all the advantages that a real wood product will have. Whether the production technology, process, and raw materials contain harmful substances, whether they will cause great damage to the environment and forests, and whether they can be recycled are the criteria of evaluating quality “green wood”.

“green wood” is also known as plastic wood, environmental protection wood, technology wood, recycled wood, or poly wood. Its proper name is wood-plastic composites, which is commonly known as WPC in the industry. It was molded and manufactured in a special production process, made from wood or bamboo chips, wheat straws, rice brans, peanut shells, or cotton straws mixing with a certain proportion of plastic materials. It maintains the appearance and texture of the solid wood and has moisture-proof, water resistance, acid and alkali resistance, antifungal, anti-static, mothproof, and other properties. Moreover, “green wood” products are fire-resistant, have no pollution, and can be recycled. North America is the region with the fastest development and largest consumption of wood-plastic composites in the world. Over the past 10 years, the growth of the WPC market in the United States has been maintained at more than 10%.

Although eco-friendly wood materials are expensive than pure wood, the cost is gradually reduced with the growth and development of the production technology. Additionally, the cost is furtherly decreased in the recycling process, many consumers are still willing to accept relatively high prices because of the advantages of WPC.

10 Advantages of WPC

Rich color, modeling at will: the product is rich in color, can be curved, and formed into arbitrary shapes. It fully meets the designer’s endless imagination and creative inspirations.

Comfortable and natural: it has the natural appearance and texture of wood.

Wide range of uses: it can be widely used in all kinds of gardens, leisure and entertainment places, and commercial spaces, etc.

Long service life: the product life can last up to 15 years.

Waterproof, moisture-proof, anti-corrosion, no deformation: WPC can be directly used in the dry and wet environment from 70 ℃ to -40 ℃ without deformation, cracking, warping, mildew, and corrosion.

Anti UV and aging: it performed excellently on anti-aging, UV, and pollutions. The color fastness meets the national standards which can be safely used for indoor and outdoor decorations and reduces costs on maintenance.

Mothproof and easy to clean: it can effectively eliminate insect disturbance, and is convenient to clean and take care of.

Heat preservation and insulation, and flame retardancy: the thermal conductivity of WPC is far lower than that of aluminum and plastic. It can insulate heat in summer and keep warm in winter. It has a very good energy-saving effect. Its flame retardancy can reach the national standard of Level-B1.

Eco-friendly and healthy: the product does not contain benzene. The content of formaldehyde is lower than the European top environmental protection standard EO level standard. It is a revolutionary energy-saving and environmental protection product of decorations. WPC greatly improves the comprehensive utilization of wood and can be recycled.

Easy installation, low comprehensive cost: “green wood” can be nailed, planed, and sawed. It can be installed efficiently and quickly, and no painting is required. It doesn’t have odors so can be used immediately after installation, saving time, labor, and money.

Characteristics of WPC

  • Environment friendly: the use of recycled materials (wood dust and plastic) does not require anti-corrosion treatment.
  • No routine maintenance is required, has a longer service life than wood, does not absorb moisture, dampness, and rot. It prevents insects, does not crack and deform, and is not sensitive to the cold and hot environment.
  • Polyolefin wood-plastic composites have good mechanical properties and can be widely used as load-bearing structural materials.
  • 95% of the raw materials of polyolefin wood plastic are recycled, so the cost is low and its products can be 100% recycled.

With the development of the global economy, the environment is getting worse. Over-consuming of forest and mineral resources has brought great threats to the survival and development of human beings. Environmental issues have become the bottleneck of economic growth. Industrial civilization has brought unprecedented prosperity to human society and had a disastrous impact on our natural environment. Some of them were irreversible. Enterprises played a major role in the pollution and consumption of the natural environment. January 2020, global average temperature broke the record, it has become the hottest January since 1880. Climate change has brought some attention and awareness, and it’s been concerned and studied by governmental and academic institutions.

For the sustainable development and growth of human beings, companies must take responsibility for protecting the environment and maintaining natural harmony. Canaan Site Furnishings does not neglect the importance of corporate social responsibility while making profits. We always pay attention to the contributions to the communities, environment, and society while constantly offer quality and price-compatible products to the customers. Canaan Site Furnishings initiatively takes precautions against environmental problems, actively promotes green technology’s development and application, and motivates the popularization of environmental-friendly products in its business activities.

Some people may think that environmental protection is a very broad and vague topic, and believe that it is a problem that only the government and the country should be concerned about. The current status can’t be improved with individual effort. This perspective is very wrong. The government can indeed alleviate the problem from a higher level by issuing policy intervention and incentives, but as an important component of society, when everyone participates in, small behaviors will bring about qualitative changes. When individuals and businesses unite, the positive impact doubles.

What You Can Do

  • Choose partners who actively take their corporate social responsibilities in work.
  • Choose eco-friendly products and resources as possible in life.
  • Increase public transportation usage to reduce motor vehicle emissions.
  • Water-saving and energy-saving.