Melt-processable water-soluble pva chip for composite fiber and its preparation process
A melt processing and composite fiber technology, applied in the direction of fiber chemical characteristics, rayon manufacturing, conjugated synthetic polymer rayon, etc., can solve the problems of composite fiber pollution, increase thermal decomposition temperature, reduce labor intensity, The effect of inhibiting crystallization
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Embodiment 1
[0036] A kind of melt-processable water-soluble PVA chip of the present embodiment is used for the composite fiber, is formed by the fusion of the raw materials of following weight ratio: 50 parts of polyvinyl alcohol; 15 parts of polyalcohols or salt compound modifier; Antioxidant 5 parts 5 parts; 5 parts of lubricant; 20 parts of deionized water; wherein, the grade of polyvinyl alcohol is 1099, the modifier of polyalcohol or salt compound is alcohol amine, polyethylene glycol, and the antioxidant is aniline antioxidant, The lubricant is calcium stearate. The purpose of adding antioxidant is to slow down the thermal degradation and yellowing of PVA, and the purpose of lubricant is to improve the flow and formability of PVA.
[0037] The fusion method is to dissolve the polyol or salt compound modifier in deionized water first, then mix it evenly with antioxidant, lubricant and polyvinyl alcohol, and obtain the modified PVA slice after drying. The melting point of the PVA slic...
Embodiment 2
[0046]The melt-processable water-soluble PVA chip used for the composite fiber in this embodiment is formed by fusion of raw materials in the following proportions by weight: 60 parts of polyvinyl alcohol; 18 parts of polyalcohol or salt compound modifier; 7 parts of antioxidant; 8 parts of lubricant; 25 parts of deionized water; among them, the grade of polyvinyl alcohol is 1099, the modifier of polyalcohol or salt compound is acetate and phosphate, and the antioxidant is hindered phenolic antioxidant. β-(3,5-di-tert-butyl-4-hydroxyphenyl), the lubricant is a multifunctional fatty acid complex ester. The purpose of adding antioxidant is to slow down the thermal degradation and yellowing of PVA, and the purpose of lubricant is to improve the flow and formability of PVA.
[0047] The fusion method is to dissolve the polyol or salt compound modifier in deionized water first, then mix it evenly with antioxidant, lubricant and polyvinyl alcohol, and obtain the modified PVA chip af...
Embodiment 3
[0056] The composite fiber of this embodiment is melt-processable water-soluble PVA slices, which are fused by the following raw materials in parts by weight: 70 parts of polyvinyl alcohol; 20 parts of polyalcohols or salt compound modifiers; 10 parts of antioxidants; 10 parts of lubricant; 30 parts of deionized water; among them, the grade of polyvinyl alcohol is 0897, the modifier of polyalcohol or salt compound is polyethylene glycol and acetate, and the antioxidant is β-(3,5 di tert-butyl 4-hydroxy-phenyl), the lubricant is calcium stearate. The purpose of adding antioxidant is to slow down the thermal degradation and yellowing of PVA, and the purpose of lubricant is to improve the flow and formability of PVA.
[0057] The fusion method is to first dissolve polyol or salt compound modifier in deionized water, then mix it with antioxidant, lubricant and polyvinyl alcohol evenly, and obtain modified PVA chips after drying. The melting point of the PVA chips is 190 ℃; meltin...
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Abstract
Description
Claims
Application Information
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