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Flame-retardant synergistic functional master batch special for polyethylene modification and preparation method thereof

A polyethylene modification and functional masterbatch technology, applied in the field of plastic modification processing, can solve the problems of poor thermal stability of decabromodiphenylethane, damaged flame retardant effect, uneven dispersion, etc., and achieve good recycling and reprocessing. , good flame retardant effect, the effect of reducing the amount of use

Pending Publication Date: 2020-01-03
江苏万纳普新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the quality and processing problems existing in the implementation of flame retardant modification technology for polyethylene by using domestic decabromodiphenylethane flame retardant, the present invention proposes a brand new solution idea: using multi-layer high density flame retardant synergistic The material is coated with decabromodiphenylethane, and then the coated decabromodiphenylethane is compounded with a flame retardant synergist, carrier resin and other additives to prepare a flame retardant functional masterbatch. Brominated diphenylethane has defects such as poor thermal stability, easy decomposition during processing, easy yellowing, poor fluidity, uneven dispersion, and impaired flame retardant effect

Method used

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  • Flame-retardant synergistic functional master batch special for polyethylene modification and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Multiple compound coated decabromodiphenylethane 70.0 kg Antimony trioxide 15.0 kg POE 13.0kg Styrene-acrylonitrile copolymer coated PTFE 1.0 kg stearic acid 700.0 g Ethylene bis stearamide 300.0 g

[0034] The preparation method of the above-mentioned functional masterbatch is as follows: Weigh all the raw materials according to the above-mentioned mass ratio requirements, put them into a high-speed mixer and mix them evenly, and then transfer them to the internal mixer for thermal mixing. The mixing temperature of the internal mixer is The temperature is 125°C, the mixing time is 16 minutes, and then the resulting dough blend is fed into a single-screw extruder through a conical feeder, melted and extruded and pelletized to obtain the flame retardant High-efficiency masterbatch; the screw speed of the single-screw extruder is 170 rpm, and the barrel temperature is controlled at 150-160°C in sections.

[0035] The prepara...

Embodiment 2

[0038] Multiple compound coated decabromodiphenylethane 55.0 kg Antimony trioxide 30.0 kg POE 11.5 kg Styrene-acrylonitrile copolymer coated PTFE 2.0 kg Oleamide 1.0 kg polyethylene wax 500.0 g

[0039] The preparation method of the above-mentioned functional masterbatch is as follows: Weigh all the raw materials according to the above-mentioned mass ratio requirements, put them into a high-speed mixer and mix them evenly, and then transfer them to the internal mixer for thermal mixing. The mixing temperature of the internal mixer is The temperature is 110°C, the mixing time is 20 minutes, and then the resulting dough blend is fed into a single-screw extruder through a conical feeder, melted and extruded and pelletized to obtain the flame retardant High-efficiency masterbatch; the screw speed of the single-screw extruder is 160 rpm, and the temperature of the barrel is controlled at 150-160°C in sections.

[0040] The preparatio...

Embodiment 3

[0043] Multiple compound coated decabromodiphenylethane 70.0 kg Antimony trioxide 15.0 kg POE 12.5kg Styrene-acrylonitrile copolymer coated PTFE 1.5 kg Zinc stearate 700.0 g Polydimethylsiloxane 300.0 g

[0044] The preparation method of the above-mentioned functional masterbatch is as follows: Weigh all the raw materials according to the above-mentioned mass ratio requirements, put them into a high-speed mixer and mix them evenly, then transfer them to the internal mixer for thermal mixing. The mixing temperature of the internal mixer is 100°C, the mixing time is 20 minutes, and then the resulting dough blend is fed into a single-screw extruder through a conical feeder, melted and extruded and pelletized to obtain the flame retardant synergistic Functional masterbatch; the screw speed of the single-screw extruder is 150 rpm, and the barrel temperature is controlled at 150-160°C in stages.

[0045] The preparation method of the m...

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Abstract

The invention relates to the technical field of plastic modification processing, in particular to a flame-retardant synergistic functional master batch special for polyethylene modification and a preparation method thereof. The functional master batch takes multi-composite coated decabromodiphenylethane as a main flame retardant, and the functional master batch comprises the following components by mass percentage: 55.0-70.0 wt.% of multi-composite coated decabromodiphenylethane, 15.0-30.0 wt.% of antimony trioxide, 9.0-13.0 wt.% of an ethylene-octene copolymer, 1.0-2.0 wt.% of styrene-acrylonitrile copolymer coated polytetrafluoroethylene, 0.5-1.0 wt.% of a dispersant, and 0.3-0.5 wt.% of a lubricant. Compared with traditional flame-retardant functional master batch, the functional masterbatch prepared by the invention significantly improves the thermal stability of brominated flame retardants, effectively reduces the material yellowing phenomenon in the thermal machining process, and enhances the flame-retardant effect of domestic brominated flame retardants on polyethylene.

Description

technical field [0001] The invention relates to the technical field of plastic modification processing, in particular to a special flame-retardant and synergistic functional masterbatch for polyethylene modification and a preparation method thereof. Background technique [0002] Polyethylene is a general-purpose plastic with a wide range of applications, and its application covers daily sundries, household appliances, industrial electronic appliances, automobiles, rail transit and other fields. However, the limiting oxygen index of polyethylene is only 17.6 vol.%, which is an extremely flammable polymer material. When polyethylene is used in the fields of electronic appliances and transportation vehicles, flame retardant modification is often required to improve its safety in use. The flame retardant modification of polyethylene can be realized by adding a flame retardant and melt blending through a twin-screw extruder. The flame retardants used are classified according to...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L25/12C08L27/18C08K13/06C08K9/10C08K5/03C08K3/22C08K5/098C08J3/22
CPCC08J3/226C08J2323/06C08J2423/08C08J2425/12C08J2427/18C08K13/06C08K9/10C08K5/03C08K3/2279C08K5/098C08K2201/011
Inventor 李翰卿汪晓东
Owner 江苏万纳普新材料科技有限公司
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