A kind of flame-retardant polypropylene and preparation method thereof

A flame retardant polypropylene and polypropylene technology, applied in the field of chemistry, can solve the problems of large impact on polypropylene mechanical properties, high cost of finished product quality control, and large differences in flame retardant effects, so as to reduce the cost of quality control and the impact of mechanical properties. Small, the effect of improving the flame retardant performance

Active Publication Date: 2017-07-04
山东旭锐新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the flame retardants added in a large amount have a great impact on the mechanical properties of polypropylene, the flame retardant effect varies greatly, and the quality control cost of finished products is high.

Method used

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  • A kind of flame-retardant polypropylene and preparation method thereof
  • A kind of flame-retardant polypropylene and preparation method thereof
  • A kind of flame-retardant polypropylene and preparation method thereof

Examples

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preparation example Construction

[0024] Aiming at the problems of low comprehensive utilization efficiency of brine, low flame retardant efficiency of intumescent flame retardant system, large addition amount affecting mechanical properties of carrier, high cost of quality control, etc., the invention provides a flame retardant polypropylene and a preparation method thereof.

[0025] Polypropylene (PP), S2040, melt flow rate is 36g / 10min (230℃ / 2.16kg), molecular weight is about 1.0×10 5 , Shanghai Secco Petrochemical Co., Ltd.; ammonium polyphosphate (APP), polymerization degree n>1000, Shandong Shian Chemical Co., Ltd.; pentaerythritol (PER), Sinopharm Group; magnesium hexasilicate (MS3), Si / Mg=2.7 -3.2, Shangyu Jiehua Chemical Co., Ltd.; Sepiolite (SEP) Hebei Hongli Sepiolite Wool Co., Ltd.; Attapulgite Jiangsu Jiuchuan Nano Material Technology Co., Ltd.

[0026] High-speed mixer, SHR-10L, Zhangjiagang Matsumoto Plastic Machinery Co., Ltd.; co-rotating twin-screw extruder, AK36, Nanjing Keya Chemical Equipm...

Embodiment 1

[0028] The formulation components of intumescent flame-retardant polypropylene are calculated in parts by weight:

[0029] Flame retardant synergist 5g, intumescent flame retardant IFR245g and polypropylene 750g.

[0030] Among them, the flame retardant synergist is magnesium hexasilicate (MS3)

[0031] The preparation method of flame-retardant polypropylene comprises the following steps: taking a flame-retardant synergist, an intumescent flame retardant IFR, and polypropylene in proportion and adding them to a high-speed mixer, and extruding with a twin-screw extruder after premixing for five minutes. Cut and granulate.

[0032] Wherein, the twin-screw head temperature is 190° C., the screw speed is 80 rpm, and the aspect ratio is 44.

[0033] After the obtained granulation is dried, use a plastic injection molding machine (nozzle temperature is 200° C., injection pressure is 65 bar, pressure holding time is 6.0 s) to make a test sample, and perform a performance test accor...

Embodiment 2

[0035] The formulation components of intumescent flame-retardant polypropylene are calculated in parts by weight:

[0036] Flame retardant synergist 10g, intumescent flame retardant IFR 240g and polypropylene 750g.

[0037] Among them, the flame retardant synergist is magnesium hexasilicate.

[0038] The preparation method of flame-retardant polypropylene comprises the following steps: taking a flame-retardant synergist, an intumescent flame retardant IFR, and polypropylene in proportion and adding them to a high-speed mixer, and extruding with a twin-screw extruder after premixing for five minutes. Cut and granulate.

[0039] Wherein, the twin-screw head temperature is 190° C., the screw speed is 80 rpm, and the aspect ratio is 44.

[0040] After the obtained granulation is dried, use a plastic injection molding machine (nozzle temperature is 200° C., injection pressure is 65 bar, pressure holding time is 6.0 s) to make a test sample, and perform a performance test accordin...

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Abstract

The invention discloses a flame-retardant polypropylene and a preparation method thereof. The flame-retardant polypropylene is composed of the following components in parts by weight: 0.5-3 parts of flame-retardant synergist, 10-25 parts of intumescent flame retardant and 75-90 parts of polypropylene. The method has the advantages of abundant raw material sources and no need of any modification treatment production technique, and can easily implement industrialization. Different synergists are compounded to obviously enhance the flame retardancy of the flame-retardant polymer, and have favorable synergistic effects.

Description

technical field [0001] The invention relates to the field of chemical technology, in particular to a flame-retardant polypropylene and a preparation method thereof. Background technique [0002] There are a lot of magnesium resources in my country's brine resources, but the comprehensive utilization efficiency is low, especially the seawater salt bittern, its products are mostly magnesium chloride hexahydrate and magnesium sulfate heptahydrate, with low added value and overcapacity. Every year, there are a large amount of magnesium-rich brine that cannot be fully and effectively comprehensively utilized, resulting in waste of resources, and then discharged as waste liquid, which also affects the ecological environment. Therefore, the efficient and high-value utilization of magnesium resources in brine has become a brine An important research topic in the field of comprehensive utilization of chemical resources. Using magnesium chloride hexahydrate, magnesium sulfate heptahy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K3/34C08K5/07C08K3/32C08K5/053
CPCC08K3/32C08K3/34C08K3/346C08K5/053C08K5/07C08K2003/323C08L2201/02C08L23/12
Inventor 王海增郝建港张芳华李铭新王彦玲王良民
Owner 山东旭锐新材股份有限公司
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