Do you know the truth behind the demonization of fiberglass as an energy-saving hero and the panic?
In today's online media landscape, an industrial material is facing an unprecedented "siege." Claims like "fiberglass stings," "fiberglass causes cancer," "fiberglass stuck in the body will never come out," and "fiberglass pierces the lungs" are rampant, leaving the public terrified. This panic is spreading rapidly, from building renovations and equipment insulation to even everyday household appliances. The online clamor of "are there ovens without insulation?" epitomizes this collective anxiety. This "siege" is fueled by ignorance and prejudice.
"An industrial product that should shine in its field, and should be used with exterior protective materials during a legal, professional, and reasonable installation process, is being treated as if its presence in a product is a form of robbery and murder? Is buying an oven just about buying fiberglass? Is baking by mixing fiberglass into dough? Three layers of cotton sealed in a partition wall, three layers on the left and three on the right. After completion, are you going to sleepwalk through the wall and stick your face into the fiberglass? Following the crowd, creating panic, and acting with no moral compass is pathetic and ridiculous."
Fiberglass vs. Asbestos: A World of Difference
Comparing fiberglass to asbestos is one of the most widespread and harmful misconceptions. While both materials appear as fibers at a macroscopic level and have been used as insulation and fireproofing materials, they differ fundamentally in their sources, physical properties, chemical properties, and, most importantly, biological effects.
Different Essential Sources: Artificial vs. Natural
Fiberglass is a man-made inorganic fiber. Its production process is controlled: raw materials such as quartz sand, limestone, and recycled glass are melted at high temperatures into a molten glass solution. This is then processed through high-speed centrifugation or stretching to produce extremely fine fibers.
Key Differences in Physical Properties: Transverse Fracture vs. Longitudinal Splitting
This is the first key point in differentiating the health risks between the two. Fiberglass is a cylindrical, single fiber. When subjected to external forces, it only breaks transversely into shorter fragments, while maintaining a largely unchanged diameter. These fragments no longer possess typical fiber properties.
Biopersistence (Core Argument): Biosoluble vs. Persistent
If differences in physical properties are the cause, then the vast chasm in biopersistence is the effect, forming the core scientific basis for determining the health risk levels of each. Biopersistence refers to the ability of a fiber to resist chemical dissolution by biological fluids and physical clearance (such as phagocytosis and excretion by macrophages) once it enters the human body (especially the lungs). Simply put, it's how long a fiber remains in the body.
Raw Material Differentiation: Glass, Rock, and Industrial Waste
The term "junk slag wool" often used by the public refers to products made from low-quality industrial waste and crudely processed. These products can suffer from unstable raw material composition, significantly compromising the performance of the final product. For example, the acidity coefficient (the ratio of acidic oxides to basic oxides) is a key quality indicator for distinguishing rock wool from slag wool. Slag wool with a low acidity coefficient has poor water resistance, reduced stability in humid environments, and is prone to powdering and shedding. This is the direct source of the negative impression many people have of "fiberglass being prickly."
Indiscriminately projecting the negative experiences associated with inferior slag wool onto high-quality, stable glass wool and rock wool products is a typical overgeneralization. High-quality glass wool, with its rigorously controlled production process and stable performance, is incomparable to inferior slag wool.
Fiberglass, an excellent inorganic non-metallic material, is suffering from a stigma stemming from information lag and confusion. Hopefully, this irrational "fiber panic" will gradually be addressed.
