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Trend observation of building interior wall paint: improve the functionality of building interior wall paint

trend observation of building interior wall paint: improve the functionality of building interior wall paint

May 18, 2020

nowadays, the role of building interior wall paint is far more than covering the stains on the walls and ceilings. They usually play a key role in the overall decoration scheme and coordinate with furniture and room accessories. In addition, consumers now hope that building interior wall coatings can provide a variety of performance characteristics, such as high hiding power to pollution resistance, but also have a low odor and have less impact on the environment. Moreover, consumers also hope that the interior wall coating of buildings has some advanced functions, such as antibacterial property and the ability to degrade harmful chemicals in the air. As the market demand for this kind of coating continues to expand, the demand for higher and more diversified properties is also growing. Driven by the healthy development of the construction industry in mature economies and the growth of income in emerging markets, the value of the global building interior wall coating industry is growing at a compound annual growth rate of 6.4%, from $39.8 billion in 2018 to $57.8 billion in 2024

many basic properties

in addition to the study of color and many color trends, transparency and brightness are the two most important properties of building interior wall coatings. Insiders believe that the most important properties of building interior wall coatings are color and surface protection. Pleasant luster is also becoming a strong consumption desire. From the perspective of color, for end users, color consistency is the most important attribute of building interior wall paint, no matter what kind of paint tank, or the effect of painting (the final requirement is consistency). There is an expectation that no matter what day it is and what kind of paint can it is, the colors should match perfectly. This has triggered a huge demand for pigment consistency, dyeing consistency and dose consistency

other necessary properties of building interior wall paint vary according to the overall needs of the project and painting work. High usage or high traffic areas, such as kitchens, bathrooms, commercial buildings, schools, doors and door decorations, need durable coatings to provide resistance to cleaning, moisture, surface scratches and damage; In low traffic areas, such as living rooms and offices, the most important attribute may be the aesthetics of the paint. The most important properties of a coating should be determined according to the specific project and the expected effect

for example, for residential consumers, in areas with high humidity, high-quality coatings need to contain additives that can prevent mold and mildew, while in kitchen and restaurant areas, the coating should provide anti fingerprint and food pollution resistance. On the other hand, for commercial and institutional end users, they prefer coatings with low VOC, consistent gloss and low odor, and the drying time is shorter, so they can return to work quickly. Consumers and contractors want low VOC coatings with competitive prices, which are easy to apply, have less splash or flow, have the strongest hiding power, withstand daily wear and tear, and have good color rendering

however, some basic requirements for building interior wall coating do depend on the construction party. In addition to the brand preference, the contractor also hopes that the paint can be applied quickly, easy to apply, well covered and easy to repair, so as to minimize the rework rate. Generally speaking, how to paint with a brush, roller or spray gun is a key selection standard. In addition, for commercial and institutional work, interior decoration coatings must meet the specifications of the corresponding professional painters Association (MPI). On the other hand, the group of DIY will be affected by consumer marketing advertising, available color discs, social media trends and third-party evaluation

the overall trend is that coatings for corridors need to be scratch resistant, decorative coatings need to provide good sealing performance and hardness, and bathroom coatings must have excellent moisture resistance. Protection has evolved into a more complex concept, including resistance to stains, polishing and other conditions previously considered normal wear and tear. Surface cleanability is also a part of strengthening protection, especially for matte paint and textured surfaces

sustainability. For example, the constant elongation stress of the sample requires measuring the force value of the sample stretched to a given elongation, which is the key driving force of the latest coating technology research. End users (consumers and manufacturers) are looking for coatings that can use simpler technology, lower energy consumption and reduce the waste associated with coatings. There is also growing interest in bio based resins and coatings based on recyclable raw materials. Whether in China or around the world, environmental protection regulations are becoming increasingly stringent, which may affect architectural coatings. At the same time, people's understanding of the value of sustainable products (such as low/no VOC and isocyanate, low/no pyrrolidone, bisphenol A, no formaldehyde, no heavy metals) is also constantly improving, leading to higher requirements for green coatings. In particular, LEED (leading energy and environmental design award) and other third-party certification continue to rise in importance to the building interior wall coating market

conversion to more functionality

another key transformation of architectural interior wall coatings is from decoration to functionality. The main functional drivers of the coating are still aesthetics and protection; End users hope that the coating can make the surface look beautiful, reduce the wear caused by the passage of time, and be easy to maintain. Some coatings also need to have special functions, such as moisture-proof, mildew proof or chemical resistance, to prevent damage caused by paint exposure to certain environments. Generally speaking, people have been seeking to change the home interior through paint to highlight their personal taste. They expect the various functions of the paint to keep the appearance fresh for a long time. Thus, more "basic" functional coatings can be antibacterial, corrosion-resistant, self-cleaning and/or self-healing

consumers hope that these functions can slow down their pain points and meet previously unmet needs, such as dirt resistance/easy cleaning and scratch/scratch resistance. The coating with the former function will have longer durability and remain for a longer time. (4) the certification and development financing mode of the new material industry of ordnance; Cleaning effect, and the coating with the latter function will maintain the bright effect for a longer time, especially in high flow areas. In general, end users are looking for more coatings that can be made across the original boundaries. Coatings are required to provide performance far beyond the traditional decorative and protective functions, from antibacterial and sound insulation, to formaldehyde removal and many other properties

the combination of paint and sealing primer is an example of a high-functional coating. These products were originally developed from base material technology solutions to provide excellent antifouling without compromising the classic finish performance of high-quality interior architectural coatings. Easy to clean coatings have been on the market for several years, but there are still next-generation products to improve their performance. Scratch resistant solutions and brighter colors have also been launched, but at the same time, there will be new insights, namely, demand, to promote the continuous improvement of performance

surfactants have more and more compatibility, thickener technology has also been improved, and the economy of pigments has also been improved, which makes more pigments can be used in the construction field, which is also an important progress. BYK has introduced wetting and dispersing additives containing hydrophilic and lipophilic groups. Before the paint film is dried, the hydrophilic group faces the pigment particles inward and the lipophilic group faces the paint body outward, so that the whole paint film is hydrophobic and the water absorption tendency of the paint film is reduced. These additives provide good pigment stability and viscosity reduction ability, while minimizing the impact on other important properties, such as antifouling performance

the emergence of water-based coatings is actually the embodiment of the functional needs of the industry. In the whole industry, we have polymers that were not originally designed for aqueous systems. Each coating will have an expected function when it is designed, and some functions are designed to alleviate the pain points of consumption and the unmet needs of delivery. For example, gloss should be considered when developing fast drying resin. The development trend of coatings has always focused on improving efficiency. Painting is an arduous task. Only coatings that make it easier for consumers to operate are the functions that consumers really need

indeed, some building interior wall coatings now have "intelligent" functions, although the definitions of such coatings are very different. Intelligent coatings used indoors may be antibacterial or anticorrosive coatings, may have automatic air purification capabilities, or may exhibit thermodynamic activities, such as providing sound isolation or acting as sensors as insulating coatings

intelligent functions should include self-cleaning characteristics, odor absorption technology, and thermochromic ability to monitor disinfection in hospitals or temperature changes in specific rooms. There are also antibacterial coatings that can provide mildew resistance or mildew resistance, and functions that can meet the needs of specific projects, such as breathing, decontamination, self-cleaning, rust conversion, are classified as intelligent functions. Some insiders believe that the core of intelligent function is to provide benefits beyond aesthetics and protection

the residual pollutants in refining and processing need to find a balance

the development of these powerful coatings requires the ability to balance many opposite properties and expectations. One of the biggest challenges is that we often forget that the coating is only a very thin film. For example, the laws of physics limit the thermal and sound insulation properties of thin-film coatings. It is difficult for interior wall coatings to be functional and cost-effective. The technology of producing high-performance coatings already exists. Unfortunately, this technology is expensive and does not always meet the budget of architectural coatings. There are many raw materials and process technologies that can be obtained from the market and transferred from other industries. They have also achieved some success in the field of coatings, but they all need to be paid. Consumers, contractors and retailers must be willing to adopt these new functions to obtain added value, although the price of such coatings is higher

it is necessary to balance the key performance requirements of each application. For example, for wall coatings, some key performance requirements are low VOC, scrub resistance and stain resistance. There will be a balanced process to realize these requirements. This problem is particularly obvious when we consider adding a function, such as the adhesion of various substrates, especially the adhesion of Engineering substrates. There are other challenges in the preparation of functional coatings, such as the compatibility between coating components

generally, when a coating component is added to improve a certain function, other functions will be negatively affected. For example, the demand of water-based coatings for wetting and dispersing additives, which in turn requires ways to eliminate the negative effects caused by the hydrophilic properties of these wetting and dispersing additives. It is important for the formulation designer not only to find the best solution to reduce the viscosity and pigment stability, but also to minimize the impact of these actions on the water sensitivity and stain resistance of the paint film

the situation becomes more complicated due to the need to create formulas that are zero volatile compounds, odorless, and do not contain many traditional ingredients (considering environmental issues). Product designers and formula designers

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