Glassfiber-reinforced hydrolysis-resistant low-warpage nylon 66 composite material and preparation method thereof

A composite material, anti-hydrolysis technology, applied in the field of modified polyamide, can solve problems such as poor dimensional stability, achieve high strength, improve easy warping deformation, good processability and appearance performance

Inactive Publication Date: 2010-12-15
NANJING JULONG SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the low-viscosity, high-fluidity nylon 66 base material ensures the overall fluidity and processing type of the material. In addition to providing a certain anti-hydrolysis function, the anti-hydrolysis alkali-free glass fiber has a smaller diameter and is more uniformly dispersed during processing. It has better performance, and an appropriate amount of warpage improvement agent can greatly improve the shortcomings of traditional glass fiber reinforced nylon 66 materials, such as severe warpage and poor dimensional stability, while

Method used

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  • Glassfiber-reinforced hydrolysis-resistant low-warpage nylon 66 composite material and preparation method thereof
  • Glassfiber-reinforced hydrolysis-resistant low-warpage nylon 66 composite material and preparation method thereof
  • Glassfiber-reinforced hydrolysis-resistant low-warpage nylon 66 composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The resin intrinsic viscosity of nylon 66 is: 2.3-3.2, 65 parts by weight;

[0038] Alkali-free hydrolysis-resistant glass fiber, the diameter of the glass fiber is 9-13 μm, 30 parts by weight;

[0039] Hollow ceramic microspheres: 1100 mesh, 2 parts by weight;

[0040] Anti-hydrolysis and thermal stabilizer: Stabaxol-P (polycarbodiimide, produced by German Bayer Company), 0.5 parts by weight;

[0041] Compatibilizer: MAH (maleic anhydride) grafted EPDM (ethylene propylene diene rubber) with a graft rate of 0.8%, 1 part by weight;

[0042] Other additives: oxane coupling agent: KH560, antioxidant: compound of 1098 and 168, release agent: calcium stearate, 1.5 parts by weight in total according to (1:1:1 weight ratio).

Embodiment 2

[0044] The resin intrinsic viscosity of nylon 66 is: 2.3-3.2, 60.5 parts by weight;

[0045] Alkali-free hydrolysis-resistant glass fiber, the diameter of the glass fiber is 9-13 μm, 30 parts by weight;

[0046] Solid glass microspheres: 1600 mesh, 2 parts by weight;

[0047] Anti-hydrolysis and thermal stabilizer: Stabaxol-P, 2 parts by weight;

[0048] Compatibilizer: 1% MAH grafted POE, 4 parts by weight

[0049] Other additives: oxane coupling agent: KH560, antioxidant: compound of 1098 and 168, release agent: calcium stearate, 1.5 parts by weight in total according to (1:1:1 weight ratio).

Embodiment 3

[0051] The resin intrinsic viscosity of nylon 66 is: 2.3-3.2, 62.5 parts by weight;

[0052] Alkali-free hydrolysis-resistant glass fiber, the diameter of the glass fiber is 9-13 μm, 30 parts by weight;

[0053] Ultrafine hollow glass beads: ≥3000 mesh, 3 parts by weight;

[0054]Anti-hydrolysis and thermal stabilizer: Stabaxol-P, 1 part by weight;

[0055] Compatibilizer: 1% MAH grafted POE, 2 parts by weight

[0056] Other additives: oxane coupling agent: KH560, antioxidant: compound of 1098 and 168, release agent: wax,

[0057] According to (weight ratio of 1:1:1), a total of 1.5 parts by weight.

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Abstract

The invention provides a glassfiber-reinforced hydrolysis-resistant low-warpage nylon 66 composite material and a preparation method thereof. The glassfiber-reinforced hydrolysis-resistant low-warpage nylon 66 composite material comprises the following components in parts by weight: 50-85 parts of nylon 66, 10-40 parts of glassfibers, 2-10 parts of warpage deformation improvers, 0.5-2 parts of hydrolytic and heat stabilizers, 1-4 parts of compatilizers and 1-2 parts of other auxiliary agents, wherein the auxiliary agents are one or a mixture of more of a siloxane coupling agent and an antioxidant or a parting agent. The product has high strength and rigidity, also well solves the problems of easy warpage deformation and great dimension change of the product due to glassfiber addition, has both excellent hydrolytic resistance and temperature tolerance and also has good processability and attractive appearance.

Description

technical field [0001] The invention belongs to the technical field of modified polyamides, and relates to a glass fiber-reinforced hydrolysis-resistant and low-warpage nylon 66 composite material and a preparation method thereof. The composite material is mainly used in automotive water chambers, engine parts, bearings, gears, etc. in the industries of automobiles, machinery, and electrical appliances. Parts that have high requirements on warping deformation and dimensional stability of molded parts. Background technique [0002] Nylon 66 is a widely used engineering plastic, which is formed by condensation polymerization of hexamethylenediamine and adipic acid. Its melting point is 252-265 ° C. Compared with other engineering plastics, it has excellent mechanical properties and better thermal properties, such as high Strength, high modulus, high hardness; relatively high heat distortion temperature, after adding glass fiber reinforcement, the heat distortion temperature c...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08K13/04C08K7/14B29B9/06B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 徐亮成二国周勇吴汾
Owner NANJING JULONG SCI&TECH CO LTD
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