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Alkali-free short glass fiber reinforced nylon material and preparation method

A short glass fiber and nylon technology is applied in the field of alkali-free short glass fiber reinforced nylon material and its preparation, which can solve the problems of complicated process, unfavorable uniform glass fiber dispersion, inconvenient glass fiber addition, etc. The effect of ideal capacitance and excellent material stability

Inactive Publication Date: 2014-09-17
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After searching the literature of the prior art, it was found that the Chinese patent CN102344676A announced a glass fiber reinforced nylon 6. Although the performance of nylon 6 has been improved to a certain extent and the application field has been broadened, the strengthening process occurs in the nylon synthesis reaction. , so its process is more cumbersome and difficult to control, and it is only aimed at a single variety of nylon 6, and its use has certain limitations; Chinese patent CN102504529A discloses a halogen-free flame-retardant long glass fiber reinforced nylon 6 material and its preparation method. It uses long glass fiber, so it is not convenient to control the amount of glass fiber added during processing, and it is also not conducive to the uniform dispersion of glass fiber in nylon

Method used

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  • Alkali-free short glass fiber reinforced nylon material and preparation method

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Effect test

Embodiment 1

[0044] Provide an alkali-free short glass fiber reinforced nylon material, which is composed of the following components by weight ratio: nylon resin 610T: 70 parts, alkali-free short glass fiber (0.5cm in length): 20 parts, lubricant (ethylene acrylic acid copolymer A-C540A): 3 parts, antioxidant (antioxidant 1098:antioxidant 168 compound = 1:1): 7 parts, the total processing weight is 4kg.

[0045] (1) Dry the nylon resin at 90°C for 10 hours to fully remove the moisture,

[0046] (2) Then fully mix the nylon, antioxidant, lubricant and other components;

[0047] (3) Pour into the hopper of the extruder, and at the same time add the treated short alkali-free glass fiber to the side feeding port;

[0048] (4) Start the extruder and turn on the vacuum pump to extrude and granulate through the twin-screw extruder. The length-to-diameter ratio of the extruder screw is 40, and the extrusion temperature from zone 1 to the machine head is 295°C, 305°C, 315°C, 325°C, 330°C, 335°C,...

Embodiment 2

[0051] Provide an alkali-free short glass fiber reinforced nylon material, which is composed of the following components by weight ratio: nylon resin 66T: 65 parts, alkali-free short glass fiber (0.7cm in length): 25 parts, lubricant (ethylene acrylic acid copolymer A-C540A): 6 parts, antioxidant (antioxidant 1098:antioxidant 168 compound = 1:1): 4 parts, the total processing weight is 4kg.

[0052] (1) Dry the nylon resin at 95°C for 9 hours to fully remove the moisture,

[0053] (2) Then fully mix the nylon, antioxidant, lubricant and other components;

[0054] (3) Pour into the hopper of the extruder, and at the same time add the treated short alkali-free glass fiber to the side feeding port;

[0055](4) Start the extruder and turn on the vacuum pump to extrude and granulate through the twin-screw extruder. The length-to-diameter ratio of the extruder screw is 35, and the extrusion temperature from zone 1 to the machine head is 310°C, 320°C, 325°C, 335°C, 330°C, 335°C, 33...

Embodiment 3

[0058] Provide an alkali-free short glass fiber reinforced nylon material, which is composed of the following components by weight ratio: nylon resin 66: 60 parts, alkali-free short glass fiber (1.2cm in length): 30 parts, lubricant (ethylene acrylic acid copolymer A-C540A): 5 parts, antioxidant (antioxidant 1098:antioxidant 168 compound = 1:1): 5 parts, the total processing weight is 4kg.

[0059] (1) Dry the nylon resin at 100°C for 8 hours to fully remove the moisture,

[0060] (2) Then fully mix the nylon, antioxidant, lubricant and other components;

[0061] (3) Pour into the hopper of the extruder, and at the same time add the treated short alkali-free glass fiber to the side feeding port;

[0062] (4) Start the extruder, turn on the vacuum pump, extrude and granulate through the twin-screw extruder, the length-to-diameter ratio of the extruder screw is 50, and the extrusion temperature from zone 1 to the machine head is 300°C, 310°C, 320°C, 330°C, 335°C, 340°C, 345°C,...

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Abstract

The invention belongs to the field of a composite high-molecular material and relates to an alkali-free short glass fiber reinforced nylon material and its preparation method. The alkali-free short glass fiber reinforced nylon material is prepared from the following components, by weight, 40-70 parts of nylon, 20-50 parts of alkali-free short glass fiber, 3-8 parts of a lubricant and 2-7 parts of an antioxidant. In comparison with the prior art, the preparation technology is simple; the material has advantages of low water absorption, superior stability and high thermal deformation temperature; the added alkali-free short glass fiber undergoes silane coupling agent surface treatment and has good caking property with a resin matrix; the length of the added glass fiber is short such that the glass fiber is uniformly dispersed in the resin matrix; and after injection moulding, the material is surface-brightening and there is no glass fiber flow liner or exposure.

Description

technical field [0001] The invention belongs to the field of composite polymer materials, and relates to an alkali-free short glass fiber reinforced nylon material and a preparation method thereof. technical background [0002] Nylon (polyamide) is the most widely used thermoplastic engineering plastic at home and abroad. It has excellent properties such as toughness, wear resistance, impact resistance, fatigue resistance, corrosion resistance, and oil resistance. It is widely used in auto parts, electronic appliances, etc. In the past 60 years, industries such as machinery and machinery have grown steadily in the fierce competition of engineering plastics, and their demand has ranked first among the five major engineering plastics so far. [0003] At present, with the rapid development of industry, people have higher and higher requirements for engineering plastics. In order to further replace metals and expand their application range, plastics are required to improve their...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K9/06C08K7/14
CPCC08K2201/004C08L77/06C08L23/0869C08K9/06C08K7/14
Inventor 杨桂生柯昌月
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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