High hydrolytic resistance polylactic acid fibre products
A polylactic acid fiber and hydrolysis resistance technology, which is applied in the production and processing field of polylactic acid fiber products, can solve the problems of reduced strength of fiber products, unable to meet strength requirements, shortened service life, etc., and achieves increased strength, wide range of uses, and great economic benefits. Effect
Inactive Publication Date: 2011-07-27
TORAY FIBER RES INST(CHINA) CO LTD
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Problems solved by technology
[0003] However, polylactic acid fibers have a big problem as textile and industrial fibers. Because polylactic acid fibers contain many carboxyl groups, they are easily hydrolyzed under high temperature and high humidity conditions.
When polylactic acid fibers are used as clothing materials, post-processing such as scouring, shaping, and dyeing is required. During the processing, polylactic acid fibers are hydrolyzed very seriously, which greatly reduces the relative molecular weight of the polymer and the strength of fiber products. , can not meet the strength requirements of actual use
[0004] In addition, as a material for industrial use, a good strength retention rate must be required, but since the degradation of polylactic acid fibers in the use environment (including storage and transportation processes) is also proceeding, the service life of the product will be greatly reduced
Method used
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Embodiment 1
[0032] ① Mix the following components by weight to form a finishing liquid:
[0033] Aziridine water soluble crosslinker 4%
[0034] Other additives 0.5%
[0035] Soft water 95.5%
[0036] ② The finished processing solution is used to absorb the polylactic acid fiber (or polylactic acid fabric) in the bath, and then bake it.
[0037] The time for exhaustion processing in the bath is 1 to 30 minutes, preferably 10 minutes, and the temperature is 20 to 100°C. During the baking process, first pre-bake at a temperature of 60-120° C. for 5 minutes, and then bake at a temperature of 100-130° C. for 3 minutes.
[0038] Among them, the aziridine water-soluble cross-linking agent is an aliphatic aziridine water-soluble cross-linking agent, the other auxiliary agent is a pH regulator diammonium hydrogen phosphate, and the catalyst is an organic amine compound or a metal salt compound, such as trimethylamine, triethylbenzene Ammonium Chloride, Sodium Benzoate, Zinc Acetate, Potassium...
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The present invention discloses one kind of polylactic acid fiber product with high hydrolysis resistance, and over 60 % of the polylactic acid molecule chains have terminal carboxyl group in closed form. The polylactic acid fiber product is finished with finishing fluid containing water soluble cross-linking agent so as to have high hydrolysis resistance and high strength holding rate. The polylactic acid fiber product has wide use, and is suitable for use in clothing and in various industries.
Description
Technical field: [0001] The invention relates to a method for producing and processing polylactic acid fiber products. Background technique: [0002] Polylactic acid fiber PLA is a new type of ecological and environmentally friendly fiber. It uses corn starch as raw material, firstly ferments it to obtain lactic acid, then undergoes condensation and polymerization to produce polylactic acid, and then uses a coupling agent to make it with good mechanical properties. The higher molecular weight polylactic acid is finally chemically modified to improve its strength and water retention, and it is fibrous, and then it is made by spinning. As a new generation of environmentally friendly polyester synthetic fiber, PLA fiber has many excellent properties, such as wearing comfort, elasticity, drapability, moisture absorption, air permeability, heat resistance and anti-ultraviolet function. At the same time, PLA fiber has good biodegradation sex. These excellent properties of polyla...
Claims
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IPC IPC(8): D01F6/62C08G63/08
Inventor 罗周荣稻田康二郎
Owner TORAY FIBER RES INST(CHINA) CO LTD