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Polymethyl methacrylate-zinc hydroxide nanocomposite material and preparation method thereof

A technology of polymethyl methacrylate and methyl methacrylate is applied in the field of polymethyl methacrylate-zinc hydroxide nanocomposite material and preparation thereof, and can solve the problem of large-scale popularization and application of unfavorable products, difficult thermal stability , poor dispersion and other problems, to achieve excellent thermal stability performance, improve thermal stability, thermal performance improvement effect

Active Publication Date: 2015-07-29
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both the nanocomposite material and its preparation method have unsatisfactory aspects. First of all, although the problem of poor dispersion of unmodified montmorillonite in polymethyl methacrylate has been solved, the product has been improved. thermal stability, but there is a low filling amount and limited improvement of thermal stability, which is not conducive to the large-scale application of the product; secondly, it is difficult for the preparation method to greatly increase the filling amount in order to improve the thermal stability of the product. At the same time, it can overcome the problem of filler agglomeration

Method used

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  • Polymethyl methacrylate-zinc hydroxide nanocomposite material and preparation method thereof
  • Polymethyl methacrylate-zinc hydroxide nanocomposite material and preparation method thereof
  • Polymethyl methacrylate-zinc hydroxide nanocomposite material and preparation method thereof

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Embodiment 1

[0038] The concrete steps of preparation are:

[0039] Step 1, first mix the soluble ammonium salt, soluble zinc salt and water according to the ratio of ammonium ion: zinc ion: water molar ratio of 1:1:20, and stir evenly at 60°C; wherein, the soluble ammonium salt is Hexamethylenetetramine, the soluble zinc salt is zinc nitrate, and the water is deionized water to obtain a mixed solution. Add methyl methacrylate to the mixed solution and stir to obtain a composite solution; wherein, the molar ratio of methyl methacrylate to zinc ions in the composite solution is 10:1.

[0040]Step 2, first add an emulsifier to the composite liquid, and vigorously stir and emulsify for 1 hour to obtain an emulsion; wherein, the mass ratio of the emulsifier in the emulsion to methyl methacrylate is 1.5:10, and the emulsifier is dodecane sodium sulfate. Add an initiator to the emulsion, and react for 2 hours to obtain a composite emulsion; wherein, the mass ratio of the initiator in the compo...

Embodiment 2

[0043] The concrete steps of preparation are:

[0044] Step 1, first mix soluble ammonium salt, soluble zinc salt and water according to the molar ratio of ammonium ion: zinc ion: water is 2:1:40, and stir evenly at 63°C; wherein, the soluble ammonium salt is Hexamethylenetetramine, the soluble zinc salt is zinc nitrate, and the water is deionized water to obtain a mixed solution. Add methyl methacrylate to the mixed liquid and stir to obtain a composite liquid; wherein, the molar ratio of methyl methacrylate to zinc ions in the composite liquid is 33:1.

[0045] Step 2, first add an emulsifier to the composite liquid, and vigorously stir and emulsify for 1.3 hours to obtain an emulsion; wherein, the mass ratio of the emulsifier in the emulsion to methyl methacrylate is 1.25:10, and the emulsifier is twelve Sodium Alkyl Sulfate. Then add an initiator to the emulsion, and react for 3 hours to obtain a composite emulsion; wherein, the mass ratio of the initiator in the composi...

Embodiment 3

[0048] The concrete steps of preparation are:

[0049] Step 1, first mix soluble ammonium salt, soluble zinc salt and water according to the molar ratio of ammonium ion: zinc ion: water is 3:1:60, and stir evenly at 65°C; wherein, the soluble ammonium salt is Hexamethylenetetramine, the soluble zinc salt is zinc nitrate, and the water is deionized water to obtain a mixed solution. Add methyl methacrylate to the mixed liquid and stir to obtain a composite liquid; wherein, the molar ratio of methyl methacrylate and zinc ions in the composite liquid is 55:1.

[0050] Step 2, first add an emulsifier to the compound liquid, and vigorously stir and emulsify for 1.5h to obtain an emulsion; wherein, the mass ratio of the emulsifier in the emulsion to methyl methacrylate is 1:10, and the emulsifier is twelve Sodium Alkyl Sulfate. Add an initiator to the emulsion, and react for 4 hours to obtain a composite emulsion; wherein, the mass ratio of the initiator in the composite emulsion t...

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Abstract

The invention discloses a polymethyl methacrylate-zinc hydroxide nanocomposite and a preparation method thereof. The nanocomposite is powder of which the grain size is 5-40mum. The nanocomposite is formed by connecting zinc hydroxide nanosheets and polymethyl methacrylate in mass percent of (1-40):(60-99) by Zn-O chemical bonds. The zinc hydroxide nanosheets are 5-50mum long, 5-50mum wide and 50-500nm thick, and the polymethyl methacrylate is 50-500nm in grain size. The preparation method comprises the following steps of mixing soluble ammonium salt, soluble zinc salt and water firstly and evenly stirring to obtain mixed solution, adding the polymethyl methacrylate to the mixed solution and stirring to obtain complex solution, subsequently, adding an emulsifying agent to the complex solution and severely stirring to obtain emulsion, then, adding an initiating agent to the emulsion to obtain composite emulsion, and then, putting the composite emulsion in vacuum for drying to obtain a target product. The polymethyl methacrylate-zinc hydroxide nanocomposite is excellent in heat stability, and can be widely used in the field of aviation, automobiles, electronic instruments, consumer goods and the like.

Description

technical field [0001] The invention relates to a composite material and a preparation method, in particular to a polymethyl methacrylate-zinc hydroxide nanocomposite material and a preparation method thereof. Background technique [0002] Although polymethyl methacrylate (PMMA) has extremely high transparency, good chemical stability and weather resistance, as well as excellent toughness, easy dyeing, easy processing, low density and electrical insulation, it has a wide range of applications in many fields. However, due to its poor thermal stability, the scope of application is greatly limited. Due to its unique nano-effects and functional properties, nanomaterials have been widely used in various fields, especially as filling materials, they have played an important role in improving the performance of polymers, such as Chinese invention patent application CN 102134363 A in The applicant's "polymethyl methacrylate nanocomposite material and its preparation method" publish...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08K7/00C08K3/22C08F120/14C08F2/44
Inventor 包超张献顾振王欢方飞田兴友
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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