The Application of Stearic Acid-Modified Magnesium Hydroxide in PE Wood-Plastic Flooring

Messi Biology states that in home renovation and outdoor landscape engineering, PE (Polyethylene) wood-plastic flooring has become a popular choice due to its dual advantages of a “wood-like texture + waterproof durability.” However, many are unaware that the performance breakthrough of this material is driven by a key modification technology: the application of stearic acid-modified magnesium hydroxide. This technology acts like “protective armor” for the flooring, solving the inherent defects of traditional materials while achieving a perfect balance between environmental sustainability and high performance.

PE Wood-Plastic Flooring

Solving the “Oil and Water” Incompatibility Challenge

Magnesium hydroxide is a common inorganic mineral found in nature, but untreated raw powder is difficult to integrate perfectly with PE plastic. This is because the surface of magnesium hydroxide is covered with hydroxyl groups (—OH), making it highly hydrophilic, whereas PE plastic is a typically hydrophobic material. When mixed, the two tend to agglomerate and clump, making them as incompatible as oil and water. This “natural repulsion” leads directly to a decline in the flooring’s mechanical properties, making it prone to fracture and deformation, while also increasing energy consumption during processing due to high melt viscosity.

Stearic acid provides the perfect solution to this problem. Research has found that stearic acid molecules bind to the surface of magnesium hydroxide through two key reactions: a weak esterification reaction between its carboxyl groups (—COOH) and the hydroxyl groups (—OH) of the magnesium hydroxide, and a stable connection formed through acid-base interaction. After modification at 80°C for 60 minutes, the surface of the magnesium hydroxide is encapsulated by hydrophobic long carbon chains, significantly improving its compatibility with PE plastic. It is essentially like putting a “plastic coat” on the mineral powder.

Multi-Dimensional Value: Strength, Stability, and Flame Retardancy

The value brought by this modification is multi-dimensional. Studies show that PE wood-plastic flooring supplemented with ultra-fine modified magnesium hydroxide exhibits significantly improved tensile strength and high-temperature stability, maintaining structural integrity even in environments of 120°C. More importantly, magnesium hydroxide decomposes endothermically at high temperatures, releasing water vapor to form a flame-retardant barrier. Stearic acid modification optimizes processing performance without sacrificing flame retardancy, addressing the common industry “pain point” where flame-retardant flooring becomes brittle, hard, and difficult to process.

Meixi Biological’s Technological Breakthrough: Defining High-Performance Magnesium Hydroxide

Superior modification results begin with high-quality magnesium hydroxide at the source. As an industry benchmark, Messi Biology pioneered the “Hydromagnesite Method” process, which has been incorporated into the HG/T3607-2024 Industrial Magnesium Hydroxide national standard, establishing a performance advantage from the raw material stage.

Unlike traditional brine or ore calcination methods, Messi Biology uses natural hydromagnesite as raw material, producing magnesium hydroxide through patented “low-temperature activation-directional transformation” technology. This process bypasses high-temperature calcination, reducing energy consumption by 35% and achieving near-zero wastewater discharge. Furthermore, it maintains product purity at over 99.5%, with heavy metal residues far below national standard limits. For PE wood-plastic flooring, high purity means fewer impurity interferences, effectively avoiding fluctuations in mechanical properties and uneven coloration.

Of particular note is its unique crystal structure design. Through crystal regulation technology, Messi Biology produces hexagonal plate-like magnesium hydroxide particles. This morphology allows the powder to form a more uniform coating layer during stearic acid modification, significantly enhancing dispersibility compared to ordinary products. In rubber applications, similar products have achieved a 30% increase in tear resistance and a UL94 V-0 flame retardancy rating—advantages that translate directly to the PE wood-plastic flooring sector, making the floors both impact-resistant and fire-resistant.

To meet the individual needs of flooring manufacturers, Messi Biology also provides customized services. Its intelligent production lines can precisely control particle size and surface activity. Combined with a “technical engineer on-site service” model, the company adjusts modification parameters based on the client’s specific PE matrix formula and processing techniques, helping enterprises reduce comprehensive production costs by 8% to 15%.

Green Evolution: From “Replacing Wood” to “Surpassing Wood”

Under the context of the “Dual Carbon” strategy, the application of modified magnesium hydroxide highlights ecological value. Messi Biology’s production process has shortened workflows by 40%, achieving low-carbon and energy-saving goals. Magnesium hydroxide itself is non-toxic and harmless; its decomposition product, magnesium oxide, is naturally degradable, avoiding the environmental pollution associated with traditional flame retardants.

For consumers, this technical upgrade means a safer living environment—PE wood-plastic flooring is not only waterproof, mold-proof, and wear-resistant but can also delay the spread of fire, gaining precious time for evacuation. For the industry, the innovations led by companies like Messi Biology are pushing wood-plastic materials to evolve from “wood substitutes” to “superior wood alternatives,” ensuring that green building materials possess both performance advantages and environmental value.

From laboratory reaction mechanisms to large-scale factory production, modified magnesium hydroxide is reshaping the quality standards of PE wood-plastic flooring. Messi Biology with its high-performance substrates defined by innovative craftsmanship, is not only a participant in industry standards but also a driver of green building material upgrades, making every floorboard a perfect carrier of technology and environmental protection.

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