Hyperbranched polymer/polyethylene composite particle hyperploid drafting micro-thin polypropylene fiber preparation method

A technology of hyperbranched polymer and polypropylene fiber, which is applied in the direction of stretch spinning, single-component polyolefin rayon, fiber processing, etc. Weak strength and other problems, to achieve the effect of improving moisture regain, low cost and low investment

Inactive Publication Date: 2013-02-13
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nucleating agent is generally an inorganic particle, and the bonding force at the interface formed between it and the PP matrix is ​​generally weak, which will have an adverse effect on the spinnability and drawing performance of the fiber.

Method used

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  • Hyperbranched polymer/polyethylene composite particle hyperploid drafting micro-thin polypropylene fiber preparation method
  • Hyperbranched polymer/polyethylene composite particle hyperploid drafting micro-thin polypropylene fiber preparation method
  • Hyperbranched polymer/polyethylene composite particle hyperploid drafting micro-thin polypropylene fiber preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 260g of deionized water and 6g of polyvinyl alcohol PVA into a 500ml three-necked bottle successively, stir and heat up to 95°C until the system is uniform and transparent.

[0031] Then take by weighing HBP-15g, initiator benzoyl peroxide 0.9g, join it in 90g styrene, stir to make it dissolve or disperse evenly, join it in the above-mentioned solution, logical nitrogen 60 minutes, and in 75 Heat and stir at ℃ to make the particle size of the dispersed phase uniform and stable; then raise the temperature to 80°C for 1 hour, then raise the temperature to 90°C for 1 hour, and finally raise the temperature to 95°C until the particles harden, then wash and dry to obtain hyperbranched polymer / Polyolefin composite particles.

[0032] Next, 100 g of hyperbranched polymer / polyolefin composite particles and 900 g of polypropylene particles were weighed, extruded through twin-screw blending, cooled, and pelletized by a pelletizer to obtain blended chips.

[0033] Finally...

Embodiment 2

[0037] Weigh 500g of deionized water and 13g of PVA into a 1000ml three-neck flask successively, stir and heat up to 95°C until the system is uniform and transparent.

[0038] Then take hyperbranched polymer HBP-220g, initiator benzoyl peroxide 1.0g, add it in the mixed solution of 80g styrene and 20g methyl acrylate, stir to make it dissolve or disperse evenly, add it to In the above solution, pass nitrogen gas for 90 minutes, and heat and stir at 75°C to make the particle size of the dispersed phase uniform and stable; then raise the temperature to 80°C for 3 hours, then raise the temperature to 90°C for 5 hours, and finally raise the temperature to 95°C to react until the particles Hardening, washing and drying to obtain hyperbranched polymer / polyolefin composite particles.

[0039] Next, 10 g of hyperbranched polymer / polyolefin composite particles and 990 g of polypropylene particles were weighed, extruded through twin-screw blending, cooled, and pelletized by a pelletizer...

Embodiment 3

[0044] Weigh 260g of deionized water and 6g of PVA into a 500ml three-neck flask successively, stir and heat up to 95°C until the system is uniform and transparent.

[0045] Then take by weighing each 5g of HBP-1 and HBP-3, initiator benzoyl peroxide 0.9g, join it in the mixed solution of 80g styrene and 20g maleic anhydride, stir to make it dissolve or disperse evenly, its Add it to the above solution, pass nitrogen gas for 85 minutes, and heat and stir at 75°C to make the particle size of the dispersed phase uniform and stable; then raise the temperature to 80°C for 2 hours, then raise the temperature to 90°C for 3 hours, and finally raise the temperature to 95°C for reaction Until the particles are hardened, the hyperbranched polymer / polyolefin composite particles are obtained through washing and drying.

[0046] Next, 60 g of hyperbranched polymer / polyolefin composite particles and 940 g of polypropylene particles were weighed, extruded through twin-screw blending, cooled,...

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Abstract

The invention relates to a hyperbranched polymer/polyethylene composite particle hyperploid drafting micro-thin polypropylene fiber preparation method. Micro-thin polypropylene fiber comprises, by weight, 1%-10% of hyperbranched polymer/polyethylene composite particle and 90%-99% of polypropylene particle. The method comprises the following steps: (1) mixing the hyperbranched polymer, olefin monomer and initiator and adding mixture into aqueous solution containing dispersant, adding nitrogen, stirring and reacting, and obtaining hyperbranched polymer/polyethylene composite particles by washing and drying after the particles are hardened, (2) fusing and mixing the hyperbranched polymer/polyethylene composite particles and the polypropylene particles, squeezing, cooling, cutting, obtaining blending slices, melting, spinning, and coiling the blending slices, and hyperploid drafting. The micro-thin polypropylene fiber is good in rear drafting performance, broken-filament-free, broken-end-free, and high in fabric strength. The preparation method is simple to operate and low in cost, and can be produced in large scale.

Description

technical field [0001] The invention belongs to the field of fine-denier polypropylene fiber and its preparation, in particular to a method for preparing fine-denier polypropylene fiber by superstretching hyperbranched polymer / polyolefin composite particles. Background technique [0002] Polypropylene fiber is one of the five major synthetic fibers. It has the advantages of abundant raw materials, low price, light specific gravity, good hydrophobicity and warmth retention, corrosion resistance, and mildew resistance. The fine denier fiber produced is small in diameter, so its The bending stiffness is low and the fibers are soft to the touch, producing fabrics with good wicking properties. [0003] Polypropylene has good molecular chain flexibility, regular structure, many intermolecular entanglements, and is easy to crystallize. It has a variety of crystal forms, the most important of which is monoclinic crystal, also known as α crystal, and also has β crystal and other crys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/10D01D5/12D01D1/00
Inventor 俞昊陈彦模傅武兴张瑜阎惠至
Owner DONGHUA UNIV
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