A kind of poss/pa6 composite material and preparation method thereof

A composite material and phenyl technology, applied in the direction of silicon organic compounds, etc., can solve the problems affecting the improvement of mechanical properties such as low-temperature impact toughness of modified PA6, affecting the dispersion of POSS monomers, and the limited amount of POSS added, so as to improve the application temperature Range, low thermal conductivity, effect of improving dispersion performance

Active Publication Date: 2016-09-14
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the disadvantages of PA6 are poor low temperature impact toughness, notch sensitivity, and high water absorption.
[0009] The above literature has done relevant research on POSS modified PA6, but there are still deficiencies, because the POSS used has two kinds of functional groups: epoxy group and vinyl group, among which vinyl group will undergo polymerization reaction under high temperature conditions, affecting The dispersion of POSS monomer in the polymer matrix leads to a limited amount of POSS added, which affects the improvement of mechanical properties such as low temperature impact toughness of modified PA6

Method used

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  • A kind of poss/pa6 composite material and preparation method thereof
  • A kind of poss/pa6 composite material and preparation method thereof
  • A kind of poss/pa6 composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) 70ml of γ-(2,3-epoxypropoxy)propyltrimethoxysilane and 10ml of phenyltrimethoxysilane are added to a 250ml single-necked flask, then 150ml of ethanol is added thereto, and then Concentrated hydrochloric acid was added dropwise to the aforementioned mixed solution to adjust the pH value to about 3, and the temperature was raised to 90°C to react for 7 days; after the reaction was completed, it was filtered and vacuum-dried at 80°C for 24 hours to obtain the POSS product with the structure of formula (1);

[0053] (2) Dry the PA6 at 100°C for 3 hours;

[0054] (3) Weigh 99 parts of PA6 dried in (2) and 1 part of POSS prepared in (1), 0.2 parts of tetraerythritol ester antioxidant, 0.2 parts of phosphite tris(2,4-di-tert-butylphenyl) Ester antioxidant, 0.5 part of montan wax, mixed in a high-speed mixer for 5 minutes;

[0055] (4) Extrude and granulate the uniformly mixed material in a twin-screw extruder to obtain a POSS / PA6 composite material; the temperature of the...

Embodiment 2

[0057] (1) 70ml of γ-(2,3-epoxypropoxy)propyltrimethoxysilane and 10ml of cyclopentyltrimethoxysilane are added to a 250ml single-necked flask, and then 150ml of methanol is added thereto, Then, concentrated hydrochloric acid was added dropwise to the aforementioned mixed solution to adjust the pH value to about 3, and the temperature was raised to 90° C. to react for 7 days; after the reaction was completed, it was filtered and vacuum-dried at 80° C. for 24 hours to obtain the POSS product with the structure of formula (1);

[0058] (2) Dry the PA6 at 150°C for 4 hours;

[0059] (3) Weigh 95 parts of PA6 dried in (2) and 5 parts of POSS prepared in (1), 0.2 parts of tris(2,4-di-tert-butylphenyl) phosphite antioxidant, 0.5 parts of pentaerythritol hard Fatty acid ester, 0.5 white wax oil, mixed in a high-speed mixer for 5 minutes;

[0060] (4) Extrude and granulate the uniformly mixed materials in a twin-screw extruder to obtain POSS / PA6 composite materials; the temperature o...

Embodiment 3

[0062] (1) 60ml of γ-(2,3-epoxypropoxy)propyltrimethoxysilane and 20ml of phenyltrimethoxysilane are added to a 250ml single-necked flask, then 150ml of ethanol is added thereto, and then Concentrated hydrochloric acid was added dropwise to the aforementioned mixed solution to adjust the pH value to about 3, and the temperature was raised to 90°C to react for 7 days; after the reaction was completed, it was filtered and vacuum-dried at 80°C for 24 hours to obtain the POSS product of formula (2).

[0063] (2) Dry the PA6 at 100°C for 3 hours;

[0064] (3) Weigh 90 parts of PA6 dried in (2) and 10 parts of POSS, 0.2 parts of phosphite tris (2,4-di-tert-butylphenyl) antioxidant, 0.2 parts of N prepared in (1), N'-hexamethylene bis(3,5-di-tert-butyl-4-hydroxyphenylpropionamide) antioxidant, 0.5 part of montan wax, mixed in a high-speed mixer for 5 minutes;

[0065] (4) Extrude and granulate the uniformly mixed materials in a twin-screw extruder to obtain POSS / PA6 composite materi...

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PUM

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Abstract

The invention provides a POSS / PA6 (polyhedral oligomeric silsesquioxane / polycaprolactam) composite material and a preparation method thereof. The composite material is prepared from 70-99 parts of PA6, 1-30 parts of POSS, 0.1-1 part of antioxidant and 0.1-1 part of lubricant through mixing, granulating and extruding. According to the invention, the novel POSS monomer is used and added into the PA6, so that the intensity of the composite material is enhanced, the application temperature range of the composite material is enlarged, the composite material has high oxidation resistance and water resistance, the flammability and combustion rate of the composite material are reduced, and the composite material has high glass transition temperature and low heat conductivity.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a POSS / PA6 composite material and a preparation method thereof. Background technique [0002] Cage polysilsesquioxane (POSS for short) is a new type of organic / inorganic hybrid nanomaterials at the molecular level that has emerged in recent years. Its general molecular formula is (RSiO 1.5 )n, n is generally 6, 8, 10, 12, etc., among which n is 8 is the most typical. POSS has both the nanometer size and cage structure of inorganic nanoparticles, and has the advantages of organic polymers, such as: [0003] 1. The POSS inorganic silicon-oxygen skeleton structure determines its outstanding heat resistance, flame retardancy and radiation resistance; [0004] 2. POSS can improve the toughness of polymers, because POSS nanoparticles can terminate the development of microcrack tips, and can cause silver crazes or shear bands, or rearrange molecular cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08K5/549C07F7/21
Inventor 杨桂生俞建
Owner HEFEI GENIUS NEW MATERIALS
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