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Development Trends of Water-Based Wood Coatings Over the Next Ten Years
Release time:
2014-09-17 09:49
Water-based wood coatings entered the market later than oil-based wood coatings, and to this day, they still account for less than 5% of the total volume of wood coatings. Consequently, opportunities to apply water-based wood coatings are far fewer than those for oil-based wood coatings. Naturally, it’s hardly surprising that very few people have accumulated extensive experience in applying water-based wood coatings, let alone developed complete and mature coating processes specifically tailored for them.
Technical and Market Positioning for China’s Waterborne Wood Coatings Over the Next Ten Years:
First, “composite” will become the key word in the development and application of waterborne coating products.
The integration of new product development technologies will strike the optimal balance between product performance and cost.
“Composite” technology is widely present in the product development process:
① Physical compounding of technologies. For example, the physical blending and compounding technology involving polyurethane and acrylic.
② Chemical compounding of technologies. Chemical compounding technologies are ubiquitous, including chemical copolymerization techniques for combining PU and PA, organosilicon-modified polymers, epoxy resin-modified polyurethanes, and inorganic-organic emulsion technologies modified with nanomaterials, among others.
③ The product配套 system consists of primers and topcoats made from different types of film-forming substances. Typically, a conventional waterborne acrylic coating is used as the primer, while a high-end polyurethane coating or a PUA composite emulsion coating serves as the topcoat, forming various product配套 systems.
The integration of coating processes for paint products will fully and comprehensively highlight the performance advantages of these products, thereby compensating for the inherent shortcomings of water-based wood coatings in certain product performance characteristics and application features.
The compounding of coating processes is mainly reflected in:
① The composite process of coating coloration, including composite techniques such as substrate tinting, base coloring, and surface retouching.
② A combination of ambient-temperature drying and accelerated drying through baking.
③ A combination of conventional waterborne wood coating curing technology and waterborne UV curing technology.
④ A combination of priming by brush application and topcoating by spray application.
⑤ A special construction technique involving the combined use of clear varnish and colored paint, among which the water-washed white or semi-transparent white effect is particularly popular.
II. Catering to the diversification of the furniture manufacturing industry through differentiated coating products.
Located on a fast-track of technological advancement, water-based wood coatings boast remarkable advantages such as being healthy and environmentally friendly, fresh and natural, easy to apply, exhibiting excellent adhesion, and offering superior leveling properties. However, they also have certain shortcomings, including slower drying speeds, lower gloss levels in the paint film, insufficient fullness, and relatively poor physical performance in terms of hardness and scratch resistance.
However, this does not mean that waterborne wood coatings will be powerless under current technological conditions. Differentiated coating formulations can perfectly meet the specialized, niche-market demands of the furniture manufacturing industry. Wooden products such as children’s toys, interior wooden doors, and suite furniture—where performance requirements in terms of hardness and resistance to strong solvent corrosion are relatively low—are classic battlegrounds where waterborne wood coatings can fully demonstrate their strengths.
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