Glass fiber reinforced environment-friendly nylon composite material and preparation method thereof

A nylon composite material, environmentally friendly technology, applied in the field of modified polyamide, can solve the problems of poor acid corrosion resistance, low flame retardant efficiency, performance decline, etc., achieve excellent acid resistance and corrosion resistance, improve comprehensive performance, good performance and the effect of appearance

Inactive Publication Date: 2016-11-09
NANJING JULONG SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the hydrophilicity of the amide group, the water absorption of nylon 66 is too high, resulting in poor dimensional stability and a significant drop in performance in high humidity environments
[0003] Conventional non-alkali glass fiber is usually added in the prior art, but the conventional non-alkali glass fiber still contains certain impurities, such as high content of fluorine and boron, and poor acid corrosion resistance
[0004] In addition, flame retardant reinforced nylon 66 still has low flame retardant efficiency and poor compatibility. With the increase of the added amount, the performance drops sharply, and the coloring property of the flame retardant is poor, and the coloring efficiency of the prepared nylon 66 composite material is low. , in the production of large parts, the apparent quality is poor, the glass fiber is seriously exposed, and it is difficult to achieve uniform color and high-quality laser marking

Method used

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  • Glass fiber reinforced environment-friendly nylon composite material and preparation method thereof
  • Glass fiber reinforced environment-friendly nylon composite material and preparation method thereof
  • Glass fiber reinforced environment-friendly nylon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The resin intrinsic viscosity of nylon 66 is: 2.3-2.5, 43.7 parts by weight;

[0039] Alkali-free chopped glass fiber: low boron glass fiber with a diameter of 9-11 μm and a length of 4.5 mm, 30 parts by weight;

[0040] Halogen-free flame retardant: melamine cyanurate, 20 parts by weight;

[0041] Synergistic coloring flame retardant additive: composite of magnesium hydroxide and aluminum hydroxide, 5 parts by weight in total according to the weight ratio of 1:1;

[0042] Laser marking aid: metal oxide-coated silicate, 0.5 parts by weight;

[0043] Other additives: silane coupling agent KH560, antioxidant 1098, antioxidant 168 and fatty acid salt, 0.8 parts by weight in total according to the weight ratio of 1:1:1:5.

Embodiment 2

[0045] The resin intrinsic viscosity of nylon 66 is: 2.3-2.5, 48.3 parts by weight;

[0046] Alkali-free chopped glass fiber: low boron glass fiber with a diameter of 9-11 μm and a length of 4.5 mm, 20 parts by weight;

[0047] Halogen-free flame retardant: melamine polyphosphate, 22 parts by weight;

[0048] Synergistic coloring flame retardant additive: composite of magnesium hydroxide and aluminum hydroxide, 8 parts by weight in total according to the weight ratio of 1:1;

[0049] Laser marking aid: metal oxide-coated silicate, 0.5 parts by weight;

[0050] Other additives: silane coupling agent KH560, antioxidant 1098, antioxidant 168 and fatty acid salt, 1.2 parts by weight in total according to the weight ratio of 1:1:1:3.

Embodiment 3

[0052] The resin intrinsic viscosity of nylon 66 is: 2.3-2.5, 43.7 parts by weight;

[0053] Alkali-free chopped glass fiber: boron-free ECR glass fiber with a diameter of 9-11 μm and a length of 3 mm, 30 parts by weight;

[0054] Halogen-free flame retardant: melamine polyphosphate, 22 parts by weight;

[0055] Synergistic coloring flame retardant additive: mica, 3 parts by weight;

[0056] Laser marking aid: metal oxide-coated silicate, 0.5 parts by weight;

[0057] Other additives: silane coupling agent KH560, antioxidant 1098, antioxidant 168 and silicone masterbatch, 0.8 parts by weight in total according to the weight ratio of 1:1:1:5.

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Abstract

Belonging to the technical field of modified polyamide, the invention relates to a glass fiber reinforced, easy dyeing, laser marking, halogen-free, environment-friendly and flame retardant nylon 66 composite material and a preparation method thereof. The composite material comprises the following raw materials by weight: 30-50 parts of nylon 66, 20-40 parts of alkali-free short glass fiber, 15-30 parts of a halogen-free flame retardant, 3-8 parts of a synergistic coloring flame-retardant additive, 0.5-2 parts of a laser marking additive, and 0.5-1.5 parts of other additives, i.e. a compound of a silane coupling agent, an antioxidant and a dispersant. The composite material is mainly used in bearing covers, electrical junction boxes, row plug-in pieces and the like in automobiles, machinery, electrical and electronic appliances and other industries, and can be applied to components and parts with high requirements for environmental protection and safety, flame retardance, laser marking, intensity and color.

Description

technical field [0001] The invention belongs to the technical field of modified polyamides, and in particular relates to a glass fiber reinforced environment-friendly nylon composite material and a preparation method thereof. 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 deflection temperature, it can reach V2 level flame retardant itself, after flame retardant modification can reach V0 level, add glass fiber reinforcement, heat distortion temperature can reach 250°C (0.45MPa ); In addition, it also exhibits excellent self-lubricating wear resistance, fatigue resistance, creep resistance; good oil and solvent resistance. However, due to the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L83/04C08K13/06C08K9/10C08K3/34C08K7/14C08K5/3492C08K5/5435C08K3/22C08K3/32
CPCC08L77/06C08K3/22C08K3/34C08K5/34924C08K5/5435C08K7/14C08K9/10C08K13/06C08K2003/2224C08K2003/2227C08K2201/003C08K2201/004C08L2201/02C08L2201/22C08L83/04C08K5/34922C08K2003/2237C08K3/32
Inventor 徐亮周勇吴汾张万虎聂春鲁宏升
Owner NANJING JULONG SCI&TECH CO LTD
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