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High-gloss extrusion-grade glass-fiber-reinforced nylon 66 composite material and preparation method thereof

A composite material and nylon technology, which is applied in the field of nylon 66 composite material and its preparation, can solve problems such as low melt strength, affect the apparent quality of products, and low relative viscosity, and achieve the effect of expanding the application range

Inactive Publication Date: 2013-06-19
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it still cannot fully meet people's needs. It has become a routine method to further improve the physical and mechanical properties of nylon 66 materials through compound modification.
Among them, glass fiber is widely used and reinforced nylon 66 material because of its high strength, weather resistance, heat resistance, good insulation and low price. At the same time, it often brings the problem of glass fiber exposure, which seriously affects the apparent quality of the product.
On the other hand, the relative molecular weight of nylon 66 resin obtained by the general polymerization method is low, about 20,000 or less, the relative viscosity is low 2.3-2.6, the melt index is large, the melt strength is low, and it is difficult to form by extrusion. Through injection molding, the application range of glass fiber reinforced nylon composites is greatly limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Each component weight part content:

[0033] Nylon (PA66) 100 parts,

[0034] 30 parts of glass fiber,

[0035] 5 parts of inorganic filler (glass microspheres),

[0036] Compatibilizer (POE-g-MAH) 10 parts,

[0037] 1.5 parts of coupling agent (KH550),

[0038] 0.8 part of chain extender (polyethylene glycol epoxy resin),

[0039] Antioxidant tetrakis ([β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester)` 1 part;

[0040] Lubricant (TAF) 0.7 parts;

[0041] Dosing according to the above weight content, nylon resin, inorganic filler, compatibilizer, silane coupling agent, chain extender, and other additives are put into the high-speed mixer and mixed at high speed, and then fed to the hopper of the extruder. The glass fiber port of the extruder is added, and the temperature of each zone (from the feeding port to the extruder die head) is controlled to be 240°C, 260°C, 270°C, 280°C, 285°C, and the speed of the main engine is 50 Hz. Extruded...

Embodiment 2

[0044] Content of each component by weight

[0045] Nylon (PA66) 100 parts,

[0046] 60 parts of glass fiber,

[0047] Inorganic filler (talcum powder) 8 parts,

[0048] 18 parts of compatibilizer (PP-g-GMA),

[0049] 2 parts of silane coupling agent (KH560),

[0050] 1.2 parts of chain extender (MDI),

[0051] Antioxidant (N, N'-bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine) 0.8 parts,

[0052] Lubricant (ethylene-acrylic acid copolymer) 1 part;

[0053] Dosing according to the above weight content, nylon resin, inorganic filler, compatibilizer, silane coupling agent, chain extender, and other additives are put into the high-speed mixer and mixed at high speed, and then fed to the hopper of the extruder. The glass fiber port of the extruder is added, and the temperature of each zone (from the feeding port to the die head of the extruder) is controlled to be 255°C, 260°C, 270°C, 280°C, 290°C, and the speed of the main engine is 35 Hz. The comp...

Embodiment 3

[0056] Content of each component by weight

[0057] Nylon (PA66) 100 parts,

[0058] 10 parts glass fiber,

[0059] 40 parts of inorganic filler (mica powder),

[0060] Compatibilizer 0 parts,

[0061] 5 parts of silane coupling agent (KH-151),

[0062] Chain extender (TDI) 5 parts,

[0063] Antioxidant ([β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester: tris [2.4-di-tert-butylphenyl] phosphite = 1:1) 0.6 parts ,

[0064] Lubricant 0 parts;

[0065] Dosing according to the above weight content, nylon resin, inorganic filler, compatibilizer, silane coupling agent, chain extender, and other additives are put into the high-speed mixer and mixed at high speed, and then fed to the hopper of the extruder. The glass fiber port of the extruder is added, and the temperature of each zone (from the feeding port to the extruder die head) is controlled to be 260°C, 280°C, 290°C, 285°C, 280°C, and the speed of the main engine is 30 Hz. The composition can be o...

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Abstract

The invention belongs to the technical field of high-molecular material, and relates to a nylon 66 composite material and a preparation method thereof. The material is composed of the following components by weight parts: 100 parts of nylon 66, 10-80 parts of glass fibre, 0-40 parts of inorganic filling materials, 0-30 parts of a compatilizer, 0.5-5 parts of a coupling agent, 0.3-5 parts of a chain extender, 0.2-1 part of an anti-oxidant and 0-3 parts of a lubricant. The composite material effectively overcomes disadvantages of poor quality of exposed surfaces of fiberglass and difficult extrusion moulding of glass fiber reinforced nylon 66 materials, and the nylon material which has a high gloss and can be consistently and stably extruded is prepared on a basis of guaranteeing original characteristics of the glass fiber reinforced materials, thereby greatly expanding application range of the nylon materials.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a nylon 66 composite material and a preparation method thereof. Background technique [0002] Nylon 66 material itself is widely used in the manufacturing industry because of its high strength, high heat resistance, high fatigue resistance, chemical resistance and outstanding oil resistance. However, it still cannot fully meet people's needs. It has become a routine method to further improve the physical and mechanical properties of nylon 66 materials through compound modification. Among them, glass fiber is widely used and reinforced nylon 66 material because of its high strength, weather resistance, heat resistance, good insulation and low price. At the same time, it often brings the problem of glass fiber exposure, which seriously affects the apparent quality of the product. On the other hand, the relative molecular weight of nylon 66 resin obtained by the general po...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08K13/04C08K7/14B29B9/06
Inventor 赵敏
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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