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Polyamide 6/montmorillonite nanocomposite and preparation method thereof

A nano-composite material and montmorillonite technology, applied in the field of polyamide 6/montmorillonite composite material and its preparation, can solve the problems of polyamide 6 degradation, affecting performance and color, poor thermal stability of montmorillonite, etc. Effects of improved heat resistance and improved flexural strength

Active Publication Date: 2010-04-21
HANGZHOUSNGOOSE ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal stability of montmorillonite modified by quaternary ammonium salt is poor, which can easily lead to the degradation of polyamide 6, affecting its performance and color

Method used

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  • Polyamide 6/montmorillonite nanocomposite and preparation method thereof
  • Polyamide 6/montmorillonite nanocomposite and preparation method thereof
  • Polyamide 6/montmorillonite nanocomposite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Mix 2kg of epoxidized organic montmorillonite and 8kg of grafted polypropylene, melt and knead through a twin-screw extruder at a temperature of 230°C-270°C, extrude and granulate to obtain grafted montmorillonite masterbatch;

[0036] Take 9.4kg of polyamide 6, 0.5kg of grafted montmorillonite masterbatch, 0.05kg of the compound of antioxidant 1010 and 168, and 0.05kg of lubricant EBS, mix them in a high-speed mixer, and double The screw extruder melts and mixes, extrudes and granulates, and prepares the polyamide 6 / montmorillonite nanocomposite material.

[0037] The prepared polyamide 6 / montmorillonite nanocomposite has the following properties: tensile strength 65MPa, flexural strength 120MPa, flexural modulus 3008MPa, impact strength 6.8kJ / m 2 , heat distortion temperature (HDT) 125 ℃.

Embodiment 2

[0039] After mixing 2.5kg of epoxidized organic montmorillonite and 7.5kg of grafted polyethylene, under the temperature of 230°C-270°C, they were melted and kneaded by a twin-screw extruder, extruded and granulated, and the grafted montmorillonite was obtained. Soil-removing masterbatch;

[0040] Take 8.5kg of polyamide 6, 1.45kg of grafted montmorillonite masterbatch, 0.03kg of antioxidant 1010, and 0.02kg of lubricant TAF, mix them in a high-speed mixer, and melt them in a twin-screw extruder at 240°C-280°C Mixing, extruding and granulating to prepare polyamide 6 / montmorillonite nanocomposite material.

[0041] The prepared polyamide 6 / montmorillonite nanocomposite has the following properties: tensile strength 67MPa, flexural strength 124MPa, flexural modulus 3062MPa, impact strength 6.7kJ / m 2 , heat distortion temperature (HDT) 130 ℃.

Embodiment 3

[0043] After mixing 2.8kg of epoxidized organic montmorillonite and 7.2kg of grafted polyamide 6, they were melted and kneaded by a twin-screw extruder at a temperature of 230°C-270°C, extruded and granulated to obtain grafted polyamide 6 Montmorillonite masterbatch;

[0044] Take 8.7kg of polyamide 6, 1.17kg of grafted montmorillonite masterbatch, 0.05kg of antioxidant 1098, and 0.08kg of lubricant TAF, mix them in a high-speed mixer, and melt them in a twin-screw extruder at 240°C-280°C Mixing, extruding and granulating to prepare polyamide 6 / montmorillonite nanocomposite material.

[0045] The prepared polyamide 6 / montmorillonite nanocomposite has the following properties: tensile strength 70MPa, flexural strength 126MPa, flexural modulus 3100MPa, impact strength 6.6kJ / m 2 , heat distortion temperature (HDT) 135 ℃.

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Abstract

The invention discloses a polyamide 6 / montmorillonite nanocomposite, which consists of the following components in percentage by weight: 85 to 95 percent of polyamide 6, 5 to 15 percent of graft montmorillonite master batch, 0 to 1 percent of antioxidant, and 0 to 1 percent of lubricant, wherein the graft montmorillonite master batch consists of the following components in percentage by weight: 20 to 30 percent of epoxy organic montmorillonite and 70 to 80 percent of graft. In the prepared polyamide 6 / montmorillonite nanocomposite, the montmorillonite completely peels off in the polyamide 6 substrate, and is in nanometer dispersion. The mechanical properties of the nanocomposite such as tensile strength and bending strength are obviously improved, and the distortion temperature and the heat resistance are also greatly improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a polyamide 6 (PA6) / montmorillonite composite material and a preparation method thereof. Background technique [0002] Polyamide 6 is an important engineering plastic with high strength, wear resistance, solvent resistance, oil resistance and other characteristics, but due to the existence of polar amide groups, it has high water absorption rate, poor dimensional stability of products, low temperature and dry state The impact strength is low, and the melt viscosity of polyamide 6 is low, it is easy to cause salivation during injection molding, and it is easy to be degraded by thermal oxygen at the processing temperature. Therefore, its performance must be improved through modification. [0003] Since the preparation of polyamide 6 / montmorillonite nanocomposites by in-situ polymerization at the Toyota Central Research Institute in Japan, the research on po...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K9/04C08K3/34C09C1/28C09C3/10
Inventor 盛仲夷周雪琴谢松桂申屠宝卿
Owner HANGZHOUSNGOOSE ELECTRICAL
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