Spinning swelling solution used for preparation of ultra-high molecular weight colored polyethylene fiber and spinning stock solution

An ultra-high molecular weight, polyethylene fiber technology, applied in the preparation of spinning solution, adding pigments in spinning solution, single-component polyolefin rayon, etc., can solve the problem of poor mechanical properties, difficult to form uniform crystal nucleus, It is difficult to disperse uniformly, etc., to achieve the effect of low crystallinity, improved mechanical properties, and uniform distribution of crystal nuclei

Active Publication Date: 2012-11-14
BEIJING TONGYIZHONG NEW MATERIAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the above-mentioned patents, inorganic pigments with large particle sizes are used, which are difficult to disperse uniformly in the spinning solution, so it is difficult to form uniform crys

Method used

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  • Spinning swelling solution used for preparation of ultra-high molecular weight colored polyethylene fiber and spinning stock solution
  • Spinning swelling solution used for preparation of ultra-high molecular weight colored polyethylene fiber and spinning stock solution
  • Spinning swelling solution used for preparation of ultra-high molecular weight colored polyethylene fiber and spinning stock solution

Examples

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preparation example Construction

[0053] The present invention also provides a method for preparing an ultra-high molecular weight polyethylene fiber spinning dope, comprising:

[0054] Mixing the UHMWPE solution with the UHMWPE swelling solution at a weight ratio of 0.42 to 2.85 to obtain a spinning stock solution with an UHMWPE weight content of 10% to 15%;

[0055] The weight ratio of the UHMWPE in the UHMWPE swelling solution to the UHMWPE in the UHMWPE solution is 2.5-70.

[0056] The ultra-high molecular weight polyethylene solution refers to a solution obtained by dissolving ultra-high molecular weight polyethylene into a solvent well known to those skilled in the art.

[0057] According to the present invention, the weight content of ultra-high molecular weight polyethylene in the ultra-high molecular weight polyethylene swelling liquid is preferably 11% to 49%, more preferably 15% to 40%, and most preferably 20% to 35%. The weight content of the ultra-high molecular weight polyethylene in the ultra-h...

Embodiment 1

[0083] Prepare ultra-high molecular weight polyethylene colored fibers according to the following procedures:

[0084] Process 1. Prepare ultra-high molecular weight polyethylene colored swelling liquid;

[0085] Process 2, preparation of ultra-high molecular weight polyethylene solution;

[0086] Step 3, preparing ultra-high molecular weight polyethylene spinning colored stock solution;

[0087] Process 4, spinning.

[0088] Process 1 specifically includes the following steps:

[0089] step 11

[0090] Take 50kg of the first white oil and place it in the swelling kettle for stirring, and evenly spray 30kg of ultra-high molecular weight polyethylene powder into it while stirring;

[0091] Step 12

[0092] Get the 3rd part of white oil of 4kg, add the sodium dodecylbenzenesulfonate surfactant of 0.05kg antioxidant, 0.06kg then and carry out emulsification stirring emulsification and obtain the first emulsification solvent, wherein stirring speed is 3000rpm, emulsification ...

Embodiment 2- Embodiment 9

[0121] Please refer to Table 2 and Table 3 for the process parameters of the above eight implementations, and the parameters not listed in Table 2 and Table 3 are the same as those in Example 1.

[0122] The various indexes of the spinning dope and the results of the mechanical properties of the fibers are listed in Table 4 and Table 5.

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Abstract

The invention discloses a spinning swelling solution used for preparation of an ultra-high molecular weight colored polyethylene fiber. The spinning swelling solution comprises, by weight: 10-50% of ultra-high molecular weight polyethylene; a staining solution accounting for 0.01-10% of the weight of the ultra-high molecular weight polyethylene; and spinning solvents. In the invention, first, the staining solution is prepared into a swelling solution, in which the staining solution can be uniformly dispersed. Preparation of the staining solution into a spinning stock solution can be beneficial to uniform dispersion of the staining solution in the spinning stock solution. When using the spinning stock solution for gel spinning, after the spinning stock solution undergoes melting, dispersion, uniform mixing and unwrapping in a twin-screw extruder, the pigment particles in the staining solution can induce crystallization as a nucleating agent and form microcrystals. Extrusion molding of a crystal nucleus-containing spinning melt is in favor of obtaining nascent filaments characterized by low crystallinity and uniform crystal nucleus distribution. Thus, mechanical properties of the ultra-high molecular weight polyethylene fiber can be improved finally.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene fiber, in particular to a spinning swelling solution and a spinning stock solution for preparing ultra-high molecular weight polyethylene colored fiber. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber, also known as high-strength and high-modulus polyethylene fiber, refers to a high-performance fiber made of polyethylene with a relative molecular weight of more than 1 million through spinning-extraction-drying-super-stretching. Fiber-reinforced composite materials made of ultra-high molecular weight polyethylene fibers have the advantages of light weight, impact resistance, and high dielectric properties, and are widely used in aerospace, sea defense, weaponry, and daily industry. [0003] In the prior art, the preparation of ultra-high molecular weight polyethylene fibers usually uses gel spinning technology, which was first invented by DSM compa...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/04D01D1/02
Inventor 贺鹏黄兴良林凤崎余燕飞
Owner BEIJING TONGYIZHONG NEW MATERIAL TECH CORP
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