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Production method of flame-retardant ultrahigh-strength polyethylene

A production method and polyethylene technology, which are applied in the field of fiber materials, can solve the problems of large calorific value and smoke generation, easy combustion, inability to overcome the defects of polyethylene flammability, etc., so as to improve the flame retardant performance and improve the fire resistance characteristics. Effect

Inactive Publication Date: 2021-11-05
盐城优和博新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although ultra-high molecular weight polyethylene fiber has such excellent properties, it is easy to burn, and its limiting oxygen index (LOI value) is only 17.5, which limits its application and development in many ways.
The ultra-high molecular weight polyethylene fibers of the prior art still cannot overcome the defect that polyethylene itself is flammable, and the amount of heat and smoke generated during combustion is relatively large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] S1. Raw material preparation: add solvent oil, antioxidant and modifier to ultra-high molecular weight polyethylene powder, stir to fully mix the ingredients, and simultaneously mix in composite flame retardant additives, polyethylene powder and composite flame retardant additives The ratio is 3:1, and the flame retardant is a mixture of aluminum hydroxide and magnesium hydroxide;

[0024] S2. Screw extrusion: adding the mixed raw materials prepared in step S1 into a twin-screw extruder, and heating, swelling and dissolving to obtain a spinning solution;

[0025] S3. Spinning process: add organophosphorus halogen-free flame retardant to the spinning solution prepared in step S2, spin through spinning equipment, mix flame-retardant silk in the spinning process, and blend fiber and flame-retardant silk Proportioning is 6:1, makes the fiber after spinning;

[0026] S4, water-cooled extraction: the spun fibers obtained in step S3 are extracted by an extractor, and the fibe...

Embodiment 2

[0032] S1. Raw material preparation: add solvent oil, antioxidant and modifier to ultra-high molecular weight polyethylene powder, stir to fully mix the ingredients, and simultaneously mix in composite flame retardant additives, polyethylene powder and composite flame retardant additives The ratio is 4:1, and the flame retardant is a mixture of aluminum hydroxide and magnesium hydroxide;

[0033] S2. Screw extrusion: adding the mixed raw materials prepared in step S1 into a twin-screw extruder, and heating, swelling and dissolving to obtain a spinning solution;

[0034] S3. Spinning process: add organophosphorus halogen-free flame retardant to the spinning solution prepared in step S2, spin through spinning equipment, mix flame-retardant silk in the spinning process, and blend fiber and flame-retardant silk Proportioning is 6:1, makes the fiber after spinning;

[0035] S4, water-cooled extraction: the spun fibers obtained in step S3 are extracted by an extractor, and the fibe...

Embodiment 3

[0041] S1. Raw material preparation: add solvent oil, antioxidant and modifier to ultra-high molecular weight polyethylene powder, stir to fully mix the ingredients, and simultaneously mix in composite flame retardant additives, polyethylene powder and composite flame retardant additives The ratio is 5:1, and the flame retardant is a mixture of aluminum hydroxide and magnesium hydroxide;

[0042] S2. Screw extrusion: adding the mixed raw materials prepared in step S1 into a twin-screw extruder, and heating, swelling and dissolving to obtain a spinning solution;

[0043] S3. Spinning process: add organophosphorus halogen-free flame retardant to the spinning solution prepared in step S2, spin through spinning equipment, mix flame-retardant silk in the spinning process, and blend fiber and flame-retardant silk Proportioning is 6:1, makes the fiber after spinning;

[0044] S4, water-cooled extraction: the spun fibers obtained in step S3 are extracted by an extractor, and the fibe...

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Abstract

The invention discloses a production method of flame-retardant ultrahigh-strength polyethylene, which is applied to the field of fiber manufacturing and solves the technical problem of poor flame retardance of existing ultrahigh-strength polyethylene. According to the key points of the technical scheme, the production method is comprises the following steps of S1, preparing raw materials; S2, carrying out screw extrusion; S3, performing spinning processing; S4, performing water-cooling extraction; S5, performing adhesive liquid spraying and film covering on the surface of fiber dried in the step S4, and enabling the fiber to rapidly penetrate through a flame-retardant particle material barrel containing a large number of polycarbonate powder particles and internally provided with an ultrasonic generator; S6, performing heating and drafting; S7, performing hot air blowing and finishing; and S8, performing packaging. The method has the technical effect that the flame-retardant and fire-resistant performance of the processed ultrahigh-strength polyethylene fiber can be improved.

Description

technical field [0001] The invention relates to the field of fiber materials, in particular to a production method of flame-retardant ultra-high-strength polyethylene. Background technique [0002] Ultra-high molecular weight polyethylene fiber is the third generation of high-strength, high-modulus, high-tech special fiber after carbon fiber and aramid fiber. Due to its extremely high molecular weight and good combination of molecular main chains, the fiber has very high crystallinity and orientation, and its tensile properties are particularly excellent. Its tensile strength is the highest in the current industrial production of high-performance fibers The specific strength is equivalent to 15 times that of high-quality steel wire, 2.6 times that of carbon fiber, and 1.7 times that of aramid fiber. [0003] Although ultra-high molecular weight polyethylene fiber has such excellent properties, it is easy to burn, and its limiting oxygen index (LOI value) is only 17.5, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/07D01F1/10D02G3/44D02G3/04D06M10/10
CPCD01F6/46D01F1/07D01F1/10D02G3/443D02G3/04D06M10/10
Inventor 陈林金效东张亮王亚军
Owner 盐城优和博新材料有限公司