Heat-resistant long glass fiber enhanced nylon composite material and preparation method thereof

A nylon composite material and long glass fiber technology, which is applied in the field of chemical materials, can solve the problems of serious environmental pollution of cuprous iodide, complex thermal stabilizer components, harsh production process conditions, etc., and achieves improved interface bonding force and good processing performance. , the effect of increasing compatibility

Inactive Publication Date: 2018-09-28
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Patent application CN106479167A discloses a preparation method of high heat-resistant long glass fiber reinforced nylon 6 composite material, through barium stearate, aluminum stearate, potassium iodide, copper bromide, and N, N'-alkylaryl p-Phenylenediamine is prepared as a high-temperature heat stabilizer to enhance the thermal stability of nylon 6 composites, but the heat stabilizer has complex components, and some components are highly toxic. Among them, barium stearate will decompose under strong acid conditions. Decomposition, the production process conditions are very harsh
Patent application CN106883604A uses cuprous iodide as a heat stabilizer to increase the heat resistance of nylon, but cuprous iodide causes serious environmental pollution and requires strict pollutant discharge treatment, which greatly increases production costs

Method used

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  • Heat-resistant long glass fiber enhanced nylon composite material and preparation method thereof
  • Heat-resistant long glass fiber enhanced nylon composite material and preparation method thereof
  • Heat-resistant long glass fiber enhanced nylon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 Reinforced nylon 6 composite material and its preparation

[0043]

[0044]

[0045] The viscosity of the nylon 6 is 2.3;

[0046] The long glass fiber has an average length of 13mm and an average diameter of 11μm;

[0047] The average particle size of the ultrafine fully vulcanized powder rubber is 130 nm.

[0048] Preparation:

[0049] (1) Preparation of N-phenylmaleimide-maleic anhydride: N-phenylmaleimide and maleic anhydride are mixed in a molar ratio of 2:1, and xylene is added and stirred at 65°C for 60 minutes , N 2 Add dicumyl peroxide under protection and increase the temperature to 110℃ to react for 4h, the product obtained is dissolved in acetone, precipitated with anhydrous ethanol, and dried.

[0050] (2) Surface treatment of long glass fiber: KH-550 is dissolved in 100% ethanol, the long glass fiber is soaked in it for 35 minutes, and then dried for use;

[0051] (3) Dry nylon 6 and add it to a high-speed mixer, then add ultra-fine fully vulcanized nitrile...

Embodiment 2

[0053] Example 2 Reinforced nylon 6 composite material and its preparation

[0054]

[0055]

[0056] The viscosity of the nylon 6 is 2.5;

[0057] The long glass fiber has an average length of 15mm and an average diameter of 10μm;

[0058] The average particle size of the ultrafine fully vulcanized powder rubber is 50 nm.

[0059] Preparation:

[0060] (1) Preparation of N-phenylmaleimide-maleic anhydride: N-phenylmaleimide and maleic anhydride are mixed in a molar ratio of 3:1. After adding xylene, stir at 65°C for 70 minutes , N 2 Add dicumyl peroxide under protection and increase the temperature to 120℃ to react for 3h, the product obtained is dissolved in acetone, precipitated with anhydrous ethanol, and dried.

[0061] (2) Surface treatment of long glass fiber: KH-171 alkane is dissolved in 100% ethanol, the long glass fiber is soaked in it for 35 minutes, and then dried for use;

[0062] (3) Dry nylon 6 and add it to a high-speed mixer, and then add ultra-fine fully vulcanized acr...

Embodiment 3

[0064] Example 3 Reinforced nylon 6 composite material and its preparation

[0065]

[0066]

[0067] The viscosity of the nylon 6 is 2.4;

[0068] The long glass fiber has an average length of 12mm and an average diameter of 10μm;

[0069] The average particle size of the ultrafine fully vulcanized powder rubber is 100 nm.

[0070] Preparation:

[0071] (1) Preparation of N-phenylmaleimide-maleic anhydride: N-phenylmaleimide and maleic anhydride are mixed in a molar ratio of 2:1, add xylene and stir at 60°C for 70min , N 2 Under protection, dicumyl peroxide was added and the temperature was raised to 110° C. to react for 4 hours. The obtained product was dissolved in acetone, precipitated with anhydrous ethanol, and dried.

[0072] (2) Surface treatment of long glass fiber: KH-550 is dissolved in 95% ethanol, the long glass fiber is soaked in it for 35 minutes, and then dried for use.

[0073] (3) Dry nylon 6 and add it to the high-speed mixer, then add ultra-fine fully vulcanized powde...

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Abstract

The invention provides a heat-resistant long glass fiber enhanced nylon composite material and a preparation method thereof. The heat-resistant long glass fiber enhanced nylon composite material is prepared from the following components of nylon 6, long glass fiber, superfine fully-vulcanized powdered rubber, N-phenylmaleimide-maleic anhydride, rare earth oxide, a lubricant, a coupling agent, an antioxidant and a flame-retardant agent through melting blending and double-screw extruding. The heat-resistant long glass fiber enhanced nylon composite material has the advantage that under the synergistic action of the superfine fully-vulcanized powdered rubber, the N-phenylmaleimide-maleic anhydride and the rare earth oxide, the heat-resistant property of the nylon composite material is obviously improved, so that the nylon composite material can be well applied to the preparation of automobile components and parts, instrument and meter parts, electromechanical components and parts, and electronic elements.

Description

Technical field [0001] The invention belongs to the field of chemical materials, and relates to a long glass fiber reinforced nylon composite material and a preparation method thereof, in particular to a heat-resistant long glass fiber reinforced nylon composite material and a preparation method thereof. Background technique [0002] Nylon is the common name of polyamide (PA, Polyamide), which is obtained by polycondensation of dibasic acid and diamine or amino acid. It is the general name for resins containing repeating amide groups (-NHCO-) ​​on the molecular chain . Nylon varieties are: PA66, PA6, PA12, PA11, PA46, PA610, PA1010, PA612, PA6T and special nylons. Among them, PA66 and PA6 occupy an absolute dominant position in nylon products. [0003] Nylon 6 has excellent mechanical properties, wear resistance, oil resistance, weak acid and weak alkali resistance, and is widely used in automobiles, electronic appliances and other fields. However, it has strong polarity, high w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L9/02C08L35/00C08L83/04C08L33/04C08L25/06C08L9/06C08K13/04C08K7/14C08K3/22C08K5/544C08K5/03C08K5/20C08J5/04
CPCC08J5/043C08J2377/02C08J2409/02C08J2425/06C08J2433/04C08J2435/00C08J2483/04C08K5/03C08K5/20C08K5/544C08K7/14C08K13/04C08K2003/2213
Inventor 魏东阳崔成杰谢众
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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