Rere-earth compound modified polyurethane fibre and preparing process thereof

A technology of rare earth compounds and spandex fibers, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, textiles and papermaking, etc., can solve problems such as poor stability, limited improvement of mechanical properties of spandex products, and difficulty in agglomeration of inorganic nanomaterials. The effect of performance improvement

Active Publication Date: 2006-03-29
HANGZHOU BANGLIAN SPANDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that the agglomeration of inorganic nanomaterials caused by the van der Waals force between nanomolecules is difficult to solve, and the second is that the nanoparticles of this type of layered structure interact with the polymer matrix material through the van der Waals force between molecules, so , the improvement of the mechanical properties of spandex products after the modification of inorganic nanomaterials is very limited, and the stability is also poor
However, the use of rare earth elements as modified substances for spandex fibers has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 1) Preparation of component A:

[0053] Heat 200g of polytetramethylene ether glycol (PTMG) in a three-necked flask to 90°C for vacuum dehydration for 2 hours, then cool to below 50°C, add 50g of 4,4'-isocyanatodiphenylmethane (MDI) and stir to react Then, gradually increase the temperature and control the temperature at 85-90°C to react for 2 hours. Slowly drip 750g of dimethylformamide into the three-necked bottle to dissolve it evenly and seal it for later use. (?? I wonder if this is still useful)

[0054] 2) Preparation of component B:

[0055] Take 50g of 1,2-propanediamine (1,2-DAP) into a three-necked flask, then add 950g of DMF, stir evenly and seal for later use.

[0056] 3) Preparation of rare earth complex terbium acetylacetonate

[0057] Terbium chloride and acetylacetone are dissolved in ethanol at a molar ratio of 1:3, and the reaction is refluxed until the reaction is complete. Terbium acetylacetonate is precipitated in the form of precipitation, filtered an...

Embodiment 2

[0061] 1) Preparation of component A: same as Example 1;

[0062] 2) Preparation of component B:

[0063] Take 40g of 1.2 propylene diamine (1.2DAP) and 10g of N-methyldiethanolamine (N-MDEA) into a three-necked flask, then add 940g of DMF, stir evenly and seal for later use.

[0064] 3) Preparation of rare earth complex thiophene trifluoroacetylacetone europium

[0065] Europium chloride and sodium thiophene trifluoroacetylacetonate are dissolved in chloroform at a molar ratio of 1:3, and the reaction is refluxed to precipitate precipitation, filtered and washed to obtain the corresponding complex with a purity of >95%.

[0066] 4) Preparation of rare earth europium modified reinforced spandex fiber:

[0067] Take 0.2 g of Europium thiophene trifluoroacetylacetonate, add it to 17.5 g of component B, dissolve it, and cool to 8°C. Then mix with 100g of component A under stirring. After reacting at room temperature for half an hour, the viscosity was measured, and the viscosity was ...

Embodiment 3

[0069] 1) Preparation of component A:

[0070] Heat 240g of polytetramethylene ether glycol (PTMG) in a three-necked flask to 90°C for vacuum dehydration for 2 hours, then cool to below 50°C, add 70g of 4,4'-isocyanatodiphenylmethane (MDI) and stir to react Then, gradually increase the temperature and control the temperature at 85-90°C to react for 2 hours. Slowly drip 690g of dimethylformamide into the three-necked bottle to dissolve it evenly and seal it for later use.

[0071] 2) Preparation of component B:

[0072] Take 40g of 1,2-propanediamine (1,2-DAP) and 10 diethanolamine (DEA) into a three-necked flask, then add 950g of DMF, stir evenly and seal for later use.

[0073] 3) Preparation of rare earth terbium modified reinforced spandex fiber:

[0074] Take 18.0g of B component and cool to 8°C. Then mix with 100g of component A under stirring. After reacting at room temperature for half an hour, add 1.2g terbium acetylacetonate and react for another half an hour. The measure...

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Abstract

In the spinning raw material for producing polyurethane fibre the rare earth element substances can be added, the described rare earth element substances include rare earth halide and rare earth complex. The rare earth elements can be combined with fibre high-molecular matrix by means of coordinate bond, so that its mechanical property can be raised. The tests show that the breaking tenacity, breaking elongation rate and rebound elasticity of polyurethane fibre in which the rare earth element substances are added are improved.

Description

Technical field: [0001] The invention relates to a rare earth compound modified spandex fiber and a preparation method thereof. Background technique: [0002] Spandex fiber is often used to make bristles, parachute silk, ropes, filter cloth, etc., so it has higher requirements for the breaking strength and breaking elongation of the product. In terms of making garments with spandex fibers, consumers have continuously improved their requirements for comfort, from simply requiring elasticity to requiring elasticity and functionality. Spandex fibers include polyether spandex and polyester spandex. Compared with polyester spandex, polyether spandex has better mechanical properties in terms of elongation and elastic recovery. But it still cannot meet the actual needs. [0003] Therefore, improving the strength, elongation and elastic recovery rate of spandex is a problem that needs to be solved at present. [0004] Some inorganic nanomaterials have been used to modify spandex material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D01F6/10
Inventor 刘智刘新海孙贤育林杨徐怡庄孔克健吴瑾光徐端夫
Owner HANGZHOU BANGLIAN SPANDEX
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