Classification and identification method of non-woven products
Non-woven fabrics are currently popular, and many people buy non-woven fabrics without knowing how to identify them. In fact, according to the chemical composition of non-woven fibers, the combustion characteristics are also different, so that the categories of non-woven fibers can be roughly distinguished. The comparison of combustion characteristics of several common non-woven fibers is introduced as follows.
1. Polypropylene fiber: close to the flame: shrink; contact the flame: melt, burn; leave the flame: continue to burn; smell: paraffin; residue characteristics: gray-white hard transparent beads.
2. Cotton, hemp, viscose, cupro fiber: close to the flame: non-shrinking and non-melting; contacting the flame: burning rapidly; leaving the flame: continuing to burn; smell: the smell of burning paper; residue characteristics: a small amount of gray or black Off-white ashes.
3. Spandex fiber: close to the flame: melting; contacting the flame: melting, burning; leaving the flame: self-extinguishing; odor: peculiar smell; residue characteristics: white gelatinous.
4. Silk and wool fibers: close to the flame: curling and melting; contacting the flame: curling, melting, burning; leaving the flame: slow burning and sometimes self-extinguishing; smell: the smell of burning hair; residue characteristics: loose and brittle black Granular or coke-like.
5. Polyester fiber: close to the flame: melt; contact the flame: melt, smoke, burn slowly; leave the flame: continue to burn, sometimes extinguished by itself; smell: special aromatic sweetness; residue characteristics: hard black circle beads.
6. Vinylon fiber: close to the flame: melt; contact the flame: melt, burn; leave the flame: continue to burn, emit black smoke; smell: unique fragrance; residue characteristics: irregular charred brown lumps.
7. Nylon fiber: close to the flame: melting; contacting the flame: melting, smoking; leaving the flame: self-extinguishing; smell: amino smell; residue characteristics: hard light brown transparent beads.
8. Acrylic fiber: close to the flame: melt; contact the flame: melt, smoke; leave the flame: continue to burn, emit black smoke; smell: spicy; Residue characteristics: black irregular beads, brittle.
9. Vinyl fiber: close to the flame: shrinkage; contact with the flame: melting, burning, black smoke; leaving the flame: self-extinguishing; odor: pungent odor; residue characteristics: dark brown lumps.
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