Product raw materials and chemical basis
globalist
Source of raw materials
The basic raw material of acetate fiber tow is natural cellulose, which mainly comes from:
Cotton linters
Wood pulp
After esterification with acetic anhydride, cellulose diacetate is obtained as the basic polymer of the fiber.
Chemical structure
Acetate belongs to the cellulose ester class, mainly cellulose diacetate, and its basic structural unit is:
–[C₆H₇O₂(OOCCH₃)₂OH]ₙ–
Among them, two hydroxyl groups are replaced by acetyl groups, and one hydroxyl group is retained, which makes the molecule have a certain hydrophilicity and polarity, which is conducive to adsorption.
Environmentally friendly properties
Acetate fiber is a green and environmentally friendly fiber with the following ecological advantages:
Renewable raw materials
Naturally degradable
No toxic residue after burning
No microplastic problem
Production process
.
Cellulose esterification reaction
Cotton linter or wood pulp + acetic anhydride + catalyst → cellulose diacetate (DA)
01
Dissolution and Forming
Dissolution solution preparation: dissolve DA in acetone to form a uniform and transparent spinning solution;
Dry spinning: extrude the spinning solution into warm air to remove the solvent and form fiber filaments
02
Drafting and curing: controlling fiber strength and resilience;
03
Bundling: Multiple single fibers are bundled together, which is called a tow.
04
Finished product processing
Cutting or rolling: adjusted according to customer needs;
Plastic packaging: to adapt to the automated filter manufacturing system;
05
Functional performance
Good adsorption performance: can adsorb some harmful substances in flue gas;
Excellent formability: suitable for high-speed coiling machines
Strong softness: comfortable taste;
Good heat resistance: processing temperature can reach 180°C;
Safe and environmentally friendly: burning without toxic residue and irritating odor.
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