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A kind of intumescent flame-retardant polyolefin and preparation method thereof

An intumescent flame retardant and polyolefin technology, applied in the chemical field, achieves the effects of simple production process, improved flame retardant performance, and low production cost

Active Publication Date: 2017-09-15
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

The synergistic effect of silicon-magnesium composite oxides with different silicon-magnesium contents on intumescent flame retardant systems is convenient to control, and has not been reported yet
In addition, the artificially synthesized silicon-magnesium composite oxide is applied to the ammonium polyphosphate (APP) / pentaerythritol (PER) / polypropylene (PP) system to study its synergistic effect on the intumescent flame retardant system, but there is no report

Method used

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  • A kind of intumescent flame-retardant polyolefin and preparation method thereof
  • A kind of intumescent flame-retardant polyolefin and preparation method thereof
  • A kind of intumescent flame-retardant polyolefin and preparation method thereof

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preparation example Construction

[0034] 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 an intumescent flame retardant polyolefin and a preparation method thereof.

[0035] Paohuajing, Shandong Dongyue Group, modulus 3.28; other chemical reagents are analytically pure, purchased from Sinopharm Group;

[0036] Polypropylene (PP), S2040, Shanghai Secco Petrochemical Co., Ltd.; Ammonium Polyphosphate (APP), polymerization degree n>1000, Shandong Shian Chemical Co., Ltd.; Pentaerythritol (PER), Sinopharm Group; Magnesium chloride hexahydrate, China Pharmaceutical Group Shanghai Chemical Reagent Company. High-density polyethylene 7200 Taiwan Formosa Plastics; ethylene-vinyl acetate copolymer EVA7350M Taiwan Formosa Plastics.

Embodiment 1

[0038] (1) Preparation of silicon-magnesium composite oxide

[0039] Add magnesium chloride hexahydrate and natronine, respectively, to add deionized water to configure a 0.5mol / L solution, measure the magnesium chloride solution and natronine solution, place the magnesium chloride solution in a container, and add the natronine solution dropwise while stirring , control the mol ratio of magnesium chloride and natron to be 1:3. After the dropwise addition, adjust the pH value to 10.5 with sodium hydroxide solution, and continue to stir at room temperature for 2 hours. Put the obtained mother liquor into a high-temperature and high-pressure reactor with a polytetrafluoroethylene liner, react at 120°C for 24 hours, and then take out the reaction The kettle was naturally cooled to room temperature, the supernatant was discarded, the resulting precipitate was filtered, and then washed with distilled water until there was no Cl - , and dried at 105°C for 12 hours to obtain a silico...

Embodiment 2

[0046] (1) Preparation of silicon-magnesium composite oxide

[0047] Add magnesium chloride hexahydrate and natronine, respectively, to add deionized water to configure a 0.5mol / L solution, measure the magnesium chloride solution and natronine solution, place the magnesium chloride solution in a container, and add the natronine solution dropwise while stirring , control the mol ratio of magnesium chloride and natron to be 1:2. After the dropwise addition, adjust the pH to 9 with sodium hydroxide solution, keep stirring at room temperature for 1 hour, put the obtained mother liquor into a high-temperature and high-pressure reactor with a polytetrafluoroethylene liner, react at 130°C for 30 hours, and then take out the reactor to cool naturally to room temperature, discard the supernatant, filter the resulting precipitate, and then wash with distilled water until free of Cl - , After drying at 110°C for 10 hours, the silicon-magnesium composite oxide was obtained, and put into ...

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Abstract

The invention discloses expanding flame-retardant polyolefin and a preparation method thereof. The formula of the expanding flame-retardant polyolefin comprises, by weight, 0.5-6 parts of silicon-magnesium composite oxide, 12-20 parts of ammonium polyphosphate, 4-8 parts of pentaerythritol and 60-85 parts of polyolefin. The expanding flame-retardant polyolefin has the advantages that rich raw material sources are available, and magnesium-rich bittern is fully utilized; no modifying treatment is needed, the production process is simple, and industrialization is easy to achieve; the silicon-magnesium composite oxide has the advantages of being low in impurity content, high in whiteness, controllable in shape and quality and the like, the silicon-magnesium content is adjustable, the synergistic effect of the silicon-magnesium composite oxide with different silicon-magnesium contents on an expanding flame-retardant system is convenient to control, the flame retardancy of the expanding flame-retardant polymer can be improved, and a good synergistic effect is achieved. Because the silicon-magnesium composite oxide is in an amorphous form, industrial expansion can be conveniently achieved in production, and the production cost is low.

Description

technical field [0001] The invention relates to the field of chemical technology, in particular to an intumescent flame-retardant polyolefin 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 sulfa...

Claims

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Application Information

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