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Polypropylene flame-retardant masterbatch and preparation method thereof

A flame retardant masterbatch, polypropylene technology, applied in the field of plastic products, can solve problems such as uneven dispersion, poor compatibility between flame retardants and polypropylene matrix, and achieve improved compatibility, good mechanical properties, and increased activation effect. Effect

Inactive Publication Date: 2017-11-24
贵州通汇塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a polypropylene flame retardant masterbatch and its preparation method, which can solve the problems of poor compatibility and uneven dispersion of existing flame retardants and polypropylene matrix

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The filler masterbatch in this embodiment is prepared from the following raw materials: 14kg of polypropylene, 80kg of modified bentonite, 4kg of polypropylene wax, 3kg of zinc stearate, 2.5kg of titanate coupling agent, and 15kg of aluminum hydroxide. Expanded graphite 8kg.

[0030] Wherein, the preparation method of modified bentonite is as follows:

[0031] Mix tetradecyl pyridinium bromide and deionized water evenly, adjust the pH of the mixed solution to 8 with NaOH solution, then add 1000 mesh sodium bentonite, stir and react for 60 minutes, after the reaction is completed, filter the reaction solution, and dry the filter residue to obtain The modified bentonite: wherein the mass ratio of bentonite to tetradecylpyridinium bromide added is 1:0.03, the solid-liquid ratio of bentonite to deionized water is 8g / mL, and the reaction temperature is 80-85°C.

[0032] The preparation method of present embodiment filling masterbatch is as follows:

[0033] (1) Heat the hi...

Embodiment 2

[0039] The filling masterbatch in this embodiment is prepared from the following raw materials: 16kg of polypropylene, 84kg of modified bentonite, 5kg of polypropylene wax, 4kg of zinc stearate, 2.6kg of titanate coupling agent, and 17kg of aluminum hydroxide. Expanded graphite 10kg.

[0040] Wherein, the preparation method of modified bentonite is as follows:

[0041]Mix tetradecyl pyridinium bromide and deionized water evenly, adjust the pH of the mixture to 9 with NaOH solution, then add 2000 mesh sodium bentonite, stir and react for 60 minutes, after the reaction is completed, filter the reaction solution, and dry the filter residue to obtain The modified bentonite: wherein the mass ratio of bentonite to tetradecylpyridinium bromide added is 1:0.04, the solid-liquid ratio of bentonite to deionized water is 9g / mL, and the reaction temperature is 80-85°C.

[0042] The preparation method of present embodiment filling masterbatch is as follows:

[0043] (1) Heat up the high-...

Embodiment 3

[0049] The filler masterbatch in this embodiment is prepared from the following raw materials: 20kg of polypropylene, 90kg of modified bentonite, 8kg of polypropylene wax, 5kg of zinc stearate, 2.8kg of titanate coupling agent, and 20kg of aluminum hydroxide. Expanded graphite 9kg.

[0050] Wherein, the preparation method of modified bentonite is as follows:

[0051] Mix tetradecyl pyridinium bromide and deionized water evenly, adjust the pH of the mixed solution to 8 with NaOH solution, then add 2000 mesh sodium bentonite, stir and react for 70 minutes, after the reaction is completed, filter the reaction solution, and dry the filter residue to obtain The modified bentonite: wherein the mass ratio of bentonite to tetradecylpyridinium bromide added is 1:0.05, the solid-liquid ratio of bentonite to deionized water is 10g / mL, and the reaction temperature is 80-85°C.

[0052] The preparation method of present embodiment filling masterbatch is as follows:

[0053] (1) Heat the h...

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Abstract

The invention discloses a polypropylene flame-retardant masterbatch and a preparation method thereof. The masterbatch is prepared through the following raw materials in parts by weight: 14-20 parts of polypropylene, 80-90 parts of modified bentonite, 4-8 parts of polypropylene wax, 3-5 parts of zinc stearate, 2.5-2.8 parts of titanate coupling agent, 15-20 parts of aluminum hydroxide, and 8-10 parts of expansible graphite. The preparation method comprises the following steps: (1) heating a high-speed mixer to reach the temperature of 180-200 DEG C, and maintaining the temperature for 5-10min; (2) adding modified bentonite and titanate coupling agent; stirring for 15-20min; adding aluminum hydroxide and expansible graphite; continuously stirring for 10-15min; and then cooling to reach the temperature of 110-120 DEG C; (3) adding polypropylene wax and zinc stearate; continuously stirring for 4-5min; then adding polypropylene; mixing and stirring for 4-5min; and discharging and cooling; and (4) extruding the cooled material, and pelletizing to obtain the polypropylene flame-retardant masterbatch. According to the preparation method, tetradecy pyridinium bromide modified bentonite is added, so that the compatibility of modified bentonite and bentonite is improved, and the prepared masterbatch is easily dispersed in polypropylene, and as a result, the flame retardance of polypropylene can be improved.

Description

technical field [0001] The invention belongs to the field of plastic products, and in particular relates to a polypropylene flame-retardant masterbatch and a preparation method thereof. Background technique [0002] Polymer materials are used more and more widely and play an important role in the national economy. However, for most polymer materials, while having various good application properties, they have the disadvantage of being easy to burn. Under high temperature conditions, they will be melted and decomposed by heat, thereby releasing flammable gases. Combustion occurs, and a large amount of heat is generated during combustion, which further promotes the melting and decomposition of polymers, making the combustion continue, causing fires and heavy losses of personnel and materials. Polypropylene is the most produced thermoplastic and is widely used in transportation, electronic appliances and other fields. However, polypropylene is a flammable material, its limiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/04C08K3/34C08K3/22C08K7/24
CPCC08K2003/2227C08K2201/003C08L23/12C08L2201/02C08L2205/025C08K13/06C08K9/04C08K3/346C08K3/22C08K7/24
Inventor 王鹏
Owner 贵州通汇塑料科技有限公司
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