Quaternary phosphonium salt montmorillonoid enhanced polyolefin nanocomposite and preparation method thereof

A nano-composite material and polyolefin technology, which is applied in the field of polyolefin nano-composite materials and quaternary phosphonium salt montmorillonite-reinforced polyolefin nano-composite materials, can solve the problems of darkening of color, limit the application range of materials, etc. effect on mechanical properties

Inactive Publication Date: 2012-09-19
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the modification of montmorillonite is modified with quaternary ammonium salts. Due to the decomposition of quaternary ammonium salts in high-temperature melt blending, the color of the modified polyolefin materials becomes darker, thus limiting the application range of such materials. , especially as packaging material

Method used

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  • Quaternary phosphonium salt montmorillonoid enhanced polyolefin nanocomposite and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0014] The polyolefin nanocomposite material of the present embodiment is made of the following raw materials in parts by weight: polyethylene 850g, compatibilizer 100g, quaternary phosphonium salt montmorillonite 50g; quaternary phosphonium salt montmorillonite is made of 100 parts of montmorillonite And 10 parts of n-dodecyltrimethylphosphonium bromide, that is, the general formula PR 3 In YX, P is a phosphorus atom, R is a methyl group, Y is a n-nonyl group, and X is a bromine atom. The compatibilizer is polyethylene-maleic anhydride graft copolymer. The polyethylene can be specifically selected from high-pressure polyethylene.

[0015] The quaternary phosphonium salt montmorillonite was prepared by the following method: 100g of sodium montmorillonite with an ion exchange capacity of 110mmol / 100g was added to 1000ml of deionized water at 80°C, and 10g of n-nonyltrimethyl Phosphonium bromide was reacted for 24 hours. After the reaction, it was washed with deionized water u...

Embodiment 2

[0018] The polyolefin nanocomposite material of the present embodiment is made of the following raw materials in parts by weight: polypropylene 800g, compatibilizer 75g, quaternary phosphonium salt montmorillonite 30g; quaternary phosphonium salt montmorillonite is made of 100 parts of montmorillonite And 10 parts of n-dodecyltributylphosphonium bromide, that is, the general formula PR 3 In YX, P is a phosphorus atom, R is a butyl group, Y is n-dodecyl, and X is a bromine atom. The compatibilizer is polypropylene-maleic anhydride graft copolymer. Polypropylene can specifically be selected from homopolypropylene.

[0019] The quaternary phosphonium salt montmorillonite was prepared by the following method: 100g of sodium montmorillonite with an ion exchange capacity of 90mmol / 100g was added to 1000ml of deionized water at 80°C, and 10g of n-dodecyltri Butylphosphonium bromide was reacted for 24 hours. After the reaction was completed, it was washed with deionized water until ...

Embodiment 3

[0022] The polyolefin nanocomposite material of the present embodiment is made of the following raw materials in parts by weight: polystyrene 900g, compatibilizer 70g, quaternary phosphonium salt montmorillonite 20g; Parts and 10 parts of n-octadecyltriphenylphosphonium bromide, that is, the general formula PR 3 In YX, P is a phosphorus atom, R is a phenyl group, Y is n-octadecyl, and X is a bromine atom. The compatibilizer is polystyrene-maleic anhydride graft copolymer.

[0023] The quaternary phosphonium salt montmorillonite was prepared by the following method: 100g of sodium-based montmorillonite with an ion exchange capacity of 100mmol / 100g was added to 1000ml of deionized water at 80°C, and 10g of n-octadecyltri Phenylphosphonium bromide was reacted for 24 hours. After the reaction, it was washed with deionized water until there was no bromide ion, and freeze-dried to obtain the target product n-octadecyltriphenylphosphonium bromide montmorillonite.

[0024] The polyo...

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Abstract

The invention discloses a quaternary phosphonium salt montmorillonoid enhanced polyolefin nanocomposite and a preparation method thereof. The quaternary phosphonium salt montmorillonoid enhanced polyolefin nanocomposite is prepared from the following raw materials in parts by weight: 80-95 parts of polyolefin, 5-10 parts of compatilizer and 0.5-5 parts of quaternary phosphonium salt montmorillonoid, wherein the quaternary phosphonium salt montmorillonoid is prepared from 100 parts of montmorillonoid and 10 parts of quaternary phosphonium salt of which the general formula is PR3YX, wherein P is a phosphorus atom, R is C1-4 linear alkyl or phenyl, Y is the linear alkyl of C12, C14, C16 and C18, and X is a chlorine atom or a bromine atom. The polyolefin nanocomposite disclosed by the invention is characterized in that filler montmorillonoid adopts the quaternary phosphonium salt montmorillonoid, the montmorillonoid is modified by the quaternary phosphonium salt, the interlayer spacing of the montmorillonoid is improved, and the montmorillonoid is unlikely to decompose and change color at high temperature and has high high-temperature stability. When the quaternary phosphonium salt montmorillonoid of the quaternary phosphonium salt montmorillonoid enhanced polyolefin nanocomposite is used as a filler which is fused and blended with polyolefin, the color of the polyolefin nanocomposite does not darken.

Description

technical field [0001] The invention relates to a polyolefin nanocomposite material, in particular to a polyolefin nanocomposite material reinforced by quaternary phosphonium salt montmorillonite, and belongs to the technical field of inorganic polymer materials. Background technique [0002] Polymer / montmorillonite nanocomposites are a type of composite material composed of organic polymer matrix and montmorillonite nanoparticles, generally including polyolefin, compatibilizer and montmorillonite. Due to the nano effect, the mechanical properties, flame retardancy, gas barrier properties, dimensional stability and heat distortion temperature of the material can be significantly improved after adding a small amount of nano fillers. Montmorillonite is a layered silicate that must be chemically modified due to its strong hydrophilicity which makes it difficult to be compatible with most polymers. The general modification method is to use organic cations to perform ion exchang...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08L23/00C08L23/06C08L23/12C08L25/06C08L51/06C08K9/04C08K3/34
Inventor张玉清姚大虎谢富春赫玉欣刘翠云高喜平
OwnerHENAN UNIV OF SCI & TECH