The materials and technologies for chassis protective armor (chassis armor) have undergone several generations of evolution. Early first-generation products mainly contained asphalt, were inexpensive, but were prone to cracking after drying. Water accumulation in these cracks could trigger a "battery effect," exacerbating chassis corrosion, and were therefore phased out by the market. Second-generation products were oil-based (solvent-based) chassis rust inhibitors, whose thinners were often highly toxic components such as toluene, harmful to humans. The resulting adhesive layer was hard, prone to cracking, and lacked elasticity, with mediocre sound insulation. They are rarely used in areas with strict environmental regulations.
Third-generation water-soluble (environmentally friendly) chassis rust inhibitors use water as a thinner, do not contain toxic substances, and have advantages such as strong adhesion, good adhesive layer elasticity, and significant chassis sound insulation, making them the mainstream choice in the current market. The latest fourth-generation products use composite polymer resin paints and other materials, further optimizing environmental friendliness, stability, and protective performance, making them the choice for the high-end market. From early products containing asphalt and toxic solvents to today's environmentally friendly, high-performance coating materials, the technological iteration of chassis armor reflects the market's ever-increasing demands for protective effects, environmental standards, and driving comfort.
