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Preparation method of halogen free flame retardation polypropylene bulked filament

A technology of expanded filament and flame-retardant polypropylene, which is applied in the manufacture of fire-resistant and flame-retardant filaments, the melting of filament raw materials, and single-component polyolefin artificial filaments. It can solve the problem of increased raw material costs and flame-retardant polypropylene expansion Filament is difficult to accept in the market, not economical, etc., to achieve the effect of low fiber spinning cost

Active Publication Date: 2014-02-26
CHANGZHOU LINGDA SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods are effective in the flame retardancy of polypropylene plastics, but for polypropylene fibers, it is still difficult to successfully pass through spinning and stretching for a long time with such an addition amount of infusible powder at the spinning temperature. , puffing process
[0007] In recent years, it has been found that N-substituted alkoxy hindered amine flame retardants and halide flame retardants have a similar flame retardant mechanism based on gas phase flame retardants, such as Flamestab NOR 116 from Ciba Precision Chemical Company of Switzerland (selected in the present invention) The hindered amine flame retardant I) is widely used in polyolefin film with good flame retardancy when added 2%, and has a suitable melting range of 108°C to 123°C. It is excellent in application performance A good flame retardant suitable for polypropylene spinning, but the current price of this product is 780 yuan / kg, which will increase the raw material cost of polypropylene fiber by 15,600 yuan, which will lead to the expansion of flame-retardant polypropylene as a raw material for ordinary carpet veils. Body filaments are difficult to be accepted by the market and are therefore not economical

Method used

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  • Preparation method of halogen free flame retardation polypropylene bulked filament
  • Preparation method of halogen free flame retardation polypropylene bulked filament

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] a. Preparation of halogen-free flame retardant masterbatch: take 44.8% polypropylene chips, 39.2% compound halogen-free flame retardant (of which: 2.0% hindered amine flame retardant I, 18.9% intumescent flame retardant I , 5.1% intumescent flame retardant II, 10.8% tetraphenylresorcinol diphosphate, 2.4% zinc acetylacetonate), 16% maleic anhydride grafted polypropylene into the high-speed mixer, after After pre-mixing by a high-speed mixer, add it to a twin-screw extruder, and then melt, mix and granulate it through a twin-screw extruder at a temperature of 210°C to 230°C to obtain a flame-retardant masterbatch;

[0040] b. Spinning: Mix 100 kg of the above-mentioned flame-retardant masterbatch, 296 kg of polypropylene slices, and 4 kg of light brown color masterbatch in proportion, and spin through the BCF spinning unit, using the same spinning method as the conventional polypropylene bulked filament. Fiber process to obtain halogen-free flame-retardant polypropylene ...

Embodiment 2

[0046] a. Preparation of halogen-free flame retardant masterbatch: take 41% polypropylene chips, 47% compound halogen-free flame retardant (of which: 5% hindered amine flame retardant I, 22.5% intumescent flame retardant I , 2% trineopentyl glycol diphosphate, 15% tetraphenylresorcinol diphosphate, 2.5% zinc acetylacetonate), 12% solubilizing and dispersing agent into the high-speed mixer, through the high-speed After pre-mixing in the mixer, add it to the twin-screw extruder, and then melt, mix and granulate it through the twin-screw extruder at a temperature of 210 ° C to 230 ° C to obtain flame-retardant masterbatches;

[0047] (2) Spinning: Mix 100 kg of the above-mentioned flame-retardant masterbatch, 395 kg of polypropylene chips, and 5 kg of light brown color masterbatch in proportion, and spin through the BCF spinning unit, using the same fiber as conventional polypropylene bulked filament Spinning process to obtain halogen-free flame-retardant polypropylene bulked fil...

Embodiment 3

[0053] a. Preparation of halogen-free flame retardant masterbatch: take 47.5% polypropylene chips, 40.5% compound halogen-free flame retardant (of which: 5% hindered amine flame retardant I, 18% intumescent flame retardant I , 5% intumescent flame retardant II, 10% tetraphenylresorcinol diphosphate, 2.5% zinc acetylacetonate), 12% solubilizing dispersant into the high-speed mixer, through the high-speed mixer After pre-mixing, add it to a twin-screw extruder, and then melt, mix and granulate it through the twin-screw extruder at a temperature of 210°C to 230°C to obtain a flame-retardant masterbatch;

[0054] b. Spinning: Mix 100 kg of the above-mentioned flame-retardant masterbatch, 392.5 kg of polypropylene chips, and 7.5 kg of brown color masterbatch in proportion, and spin through the BCF spinning unit, using the same spinning method as the conventional polypropylene bulked filament process to obtain halogen-free flame-retardant polypropylene bulked filaments. Among them,...

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Abstract

The invention relates to a preparation method of a halogen free flame retardation polypropylene bulked filament, which comprises the following steps: a) preparing the halogen free flame retardation master batch: taking 40-55% of polypropylene slices, 30-45% of composite halogen free fire retardant, 10-20% of solubilizing and dispersing agent in a high speed mixer, premixing through a high speed mixer and then adding into the double screw extruder, melting and mixing for granulation under the temperature of 210-230 DEG C to obtain the flame retardation master batch; b, spinning: mixing 15%-25% of flame retardation master batch and 75%-85% of polypropylene slices in proportion, spinning through BCF spinning machine set, employing a spinning technology which is same with a conventional method for polypropylene bulked filament to obtain the halogen free flame retardation polypropylene bulked filament, the quality index can satisfy the requirements for weaving and using the carpets and the limit oxygen index is between 28 and 32.

Description

technical field [0001] The invention belongs to the technical field of carpet yarn processing, and in particular relates to a preparation method of a halogen-free flame-retardant polypropylene bulked filament. Background technique [0002] Polypropylene bulked filament can be used in the production of carpets, car blankets, decorative cloths, sealing tops, etc., but it is mainly used in the carpet and car blanket industries. Due to its small specific gravity, chemical resistance, excellent stain resistance and weaving properties, as well as its price advantage, it has always been the largest raw material in my country's carpet industry, with an annual output of about 200,000 tons, accounting for the total amount of chemical fiber carpets. More than 85% of. With the development of society and the improvement of people's living standards, its relative proportion has a downward trend compared with nylon carpets. will continue to increase. [0003] Polypropylene only contains ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/46D01F1/07D01D1/04
Inventor 陆惠林张立军薛小平黄重隆蒋文蒋枫孙显明蒋国忠
Owner CHANGZHOU LINGDA SPECIAL FIBER
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