Water-soluble polyester slurry for FDY filament sizing water-jet weaving and preparation method thereof

A water-soluble polyester and filament technology, used in textiles, papermaking, fiber processing, etc., can solve the problems of limited storage time, affecting the water solubility of products, and product stickiness, etc., to reduce storage and transportation costs and comprehensive costs. Excellent chemical stability, the effect of increasing the glass transition temperature

Active Publication Date: 2015-10-21
湖北山特莱新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Acrylic slurry has the following disadvantages in production, storage and post-processing: 1. A large amount of ammonia that has a great impact on the environment and human body is used in production; 2. The solid content of the product is only about 30%, and there is a deadline for storage , high transportation costs; 3. Desizing waste liquid is difficult to biodegrade; 4. Acrylates have little adhesion to hydrophobic polyester fibers
[0006] The acrylic size in the prior art has obvious disadvantages as mentioned above. In addition, the water-soluble polyester for the size still has the following problems: (1) The product still has a little moisture absorption and stickiness, which affects water jet weaving, and in severe cases will cause the product to stick. And; (2) In order to prevent moisture absorption and re-adhesion, it is necessary to reduce the content of hydrophilic groups, which may affect the water solubility of the product. In severe cases, it may lead to incomplete desizing and affect the quality of the fabric

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The components include:

[0032] Waste recycled polyester plastic 825kg (within 6% moisture content),

[0033] 320kg of ethylene glycol (over 200% excess),

[0034] Isophthalic acid 50kg,

[0035] Sodium isophthalic acid-5-sulfonate 125kg,

[0036] 2,2-Dimethyl-1,3-propanediol 50kg,

[0037] Anhydrous sodium acetate 1kg,

[0038] Sb 2 O 3 120g.

[0039] Preparation:

[0040] (1) The waste recycled polyester plastic is made into fragments, and the waste recycled polyester plastic fragments, ethylene glycol, isophthalic acid-5-sodium sulfonate, isophthalic acid, 2,2-dimethyl -1,3 propylene glycol, anhydrous sodium acetate, Sb 2 O 3 After mixing, put it into the pre-melting kettle, and raise the temperature under static atmospheric pressure. The top temperature of the pre-melting kettle's fractionating column at the beginning of this process is controlled below 130 ℃, preferably between 105 ℃ ± 3 ℃, when the internal reaction temperature reaches 235 ℃ ± Whe...

Embodiment 2

[0047] The components include:

[0048] Waste recycled polyester plastic 825kg (within 6% moisture content),

[0049] 300kg of ethylene glycol (over 160% excess),

[0050] Isophthalic acid 50kg,

[0051] Dimethyl isophthalate-5-sodium sulfonate 150kg,

[0052] 2,2-Dimethyl-1,3-propanediol 50kg,

[0053] Polyethylene glycol ether 4000 25kg,

[0054] Sodium acetate trihydrate 1kg,

[0055] Sb 2 O 3 150g,

[0056] Calcium acetate 500g.

[0057] Preparation:

[0058] (1) The waste recycled polyester plastic is made into fragments, and the waste recycled polyester plastic fragments, ethylene glycol, dimethyl isophthalate-5-sodium sulfonate, isophthalic acid, 2,2- Dimethyl-1,3 propanediol, Sb 2 O 3 , Calcium acetate and sodium acetate trihydrate are mixed and put into the pre-melting kettle, and the temperature is raised under static atmospheric pressure. The temperature of the top of the pre-melting kettle fractionating column at the beginning of this process is contro...

Embodiment 3

[0065] The components include:

[0066] Waste recycled polyester plastic 825kg (within 6% moisture content),

[0067] 300kg of ethylene glycol (over 160% excess),

[0068] Isophthalic acid 40kg,

[0069] Dimethyl isophthalate-5-sodium sulfonate 125kg,

[0070] 2-methyl-1,3-propanediol 60kg,

[0071] Anhydrous sodium acetate 1kg,

[0072] Sb 2 O 3 30g,

[0073] Calcium acetate 500g.

[0074] Preparation:

[0075] (1) The waste recycled polyester plastic is made into fragments, and the waste recycled polyester plastic fragments, ethylene glycol, dimethyl isophthalate-5-sodium sulfonate, isophthalic acid, 2-methyl -1,3 propylene glycol, Sb 2 O 3 , Calcium acetate and anhydrous sodium acetate are mixed and put into the pre-melting kettle, and the static pressure is increased. The temperature of the pre-melting kettle fractionating column top temperature is controlled below 130°C at the beginning of this process, preferably between 105°C±3°C. When the internal temper...

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Abstract

The invention discloses a water-soluble polyester slurry for FDY filament sizing water-jet weaving and a preparation method thereof, belongs to the technical field of water-soluble polyester slurry, and is used for mainly solving the problems that a conventional acrylic acid slurry has the product solid content of only about 30% and is high in transport costs, severe in environmental pollution, serious in moisture absorption and rebonding, low in adhesive power with hydrophobic polyester fibers and the like. The water-soluble polyester slurry is mainly characterized in that the water-soluble polyester slurry is prepared by alcoholysis, copolymerization, cooling and crushing of recycled polyester, ethylene glycol, m-phthalic acid-5-sulfonate or derivatives thereof, m-phthalic acid, other dihydric alcohols, a catalyst, an inorganic auxiliary agent and polyether with the weight-average molecular weight of 600-10000. The water-soluble polyester slurry has the characteristics of improving the product glass transition temperature, being excellent in chemical stability, hydrolysis resistance and thermal stability, being convenient to store and transport and having no addition and release of ammonia gas in the process of using, and is mainly used for preparation of the water-soluble polyester slurry for FDY filament sizing water-jet weaving.

Description

Technical field [0001] The invention belongs to the technical field of water-soluble polyester sizing agents, and specifically relates to a water-soluble environmentally friendly polyester sizing agent used for sizing and water-jet weaving of FDY filaments and a preparation method thereof. Background technique [0002] The technicality of water jet loom weaving brings better economy. As a high-speed shuttleless loom, it shows strong vitality in the contemporary textile industry. At the same time, it also gave birth to the development of water-jet loom slurry. Water-jet loom slurry is different from conventional slurry. It must meet the following characteristics: it is easily soluble in water during sizing, and the sizing film must be water-resistant during weaving. The slurry should be easy to remove during the slurry. [0003] At present, the commonly used water-jet loom slurry is acrylic slurry. This type of slurry polymerizes acrylic acid and its esters in solution under the ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/507D06M15/53D06M11/47
Inventor 韦金红陈春华周重旭孙经纶
Owner 湖北山特莱新材料有限公司
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