Nylon composite material and its preparation method and application

A technology for nylon composite materials and raw materials, which is applied in the field of polymer composite materials, can solve the problems that nylon materials cannot be fully filled, and burrs are prone to appear in the rolling grooves, so as to achieve enhanced shear thinning, good mechanical properties, and flow. good effect

Active Publication Date: 2022-05-20
江苏沃特新材料科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, for some complex injection molding structures, such as: single-gate injection mold, 1 mold with 36 rolling strips, when the existing modified PA66 material passes through, it is easy to have the problem that the nylon material cannot be filled. If the pressure is further increased, the rolling With a card slot and prone to flashing

Method used

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  • Nylon composite material and its preparation method and application
  • Nylon composite material and its preparation method and application
  • Nylon composite material and its preparation method and application

Examples

Experimental program
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Effect test

preparation example Construction

[0041] A preparation method of nylon composite material, comprising the following steps:

[0042] Mix the above-mentioned PA66, compound toughening agent, organic copper salt and additives evenly according to the proportion, and place them in the main barrel of a twin-screw extruder (screw diameter 35mm, length-to-diameter ratio L / D=36), and the main barrel is controlled in nine sections The temperature (from the feeding port to the nozzle outlet) is 230°C, 250°C, 260°C, 260°C, 260°C, 260°C, 260°C, 270°C, 270°C, the twin-screw speed is 300 rpm, and the extruded material The strips are cooled in a water tank and then pelletized to obtain the product.

[0043] Product performance test method:

[0044] Charpy notched impact strength: According to ISO 179-1 method, sample size: 80*10*4mm.

[0045] Tensile strength: Tested according to ISO527 standard, type 1A.

[0046] For aging evaluation methods, refer to Q / JL J124010-2016.

[0047] Test temperature (140±2)℃, aging time (100...

Embodiment 1-4

[0051] Examples 1-4 respectively provide 4 kinds of composite toughening agents. When preparing, according to the formula in Table 1, all raw materials can be mixed evenly.

[0052] Table 1 Compound toughening agent formula unit: % by weight

[0053] Example 1 Example 2 Example 3 Example 4 POE-g-MAH 50 0 50 50 EAA 50 50 0 25 PB-1 0 50 50 25

Embodiment 5-8

[0054] Embodiment 5-8, comparative example 1 and performance test

[0055] The preparation method of the nylon composite material of embodiment 5-8 and comparative example 1 is as follows:

[0056] The dried PA66, organic copper salt, compound toughening agent, antioxidant, lubricant, colorant are mixed uniformly according to the formula in Table 2, and then placed in a twin-screw extruder (screw diameter 35mm, aspect ratio In the main cylinder with L / D=36), the main cylinder is divided into nine sections to control the temperature (from the feeding port to the nozzle outlet) as 230°C, 250°C, 260°C, 260°C, 260°C, 260°C, 260°C, 270°C, 270°C, the twin-screw speed is 300 rpm, the extruded strands are cooled in a water tank, and then pelletized to obtain the product. After the above product was dried in a blast oven at 110°C for 4 hours, the particles were taken for rheological test. The test results are shown in Table 3 and figure 1 As shown, the rest are made into standard spl...

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Abstract

The invention relates to a nylon composite material and its preparation method and application. The nylon composite material is prepared from raw materials including the following weight percentages: 80-90% polyhexamethylene adipamide, 5-15% compound toughening agent, 0.1-2% organic copper salt, 1.5-1.5% auxiliary agent 5%; the composite toughening agent is formed by mixing at least two of maleic anhydride grafted polyoctene, ethylene acrylic acid copolymer and polybutene. The nylon composite material can resist high temperature and aging for a long time, and can be used as a cable tie material around the engine. In addition, the nylon composite material has a significant shear thinning phenomenon, which is conducive to the production of cable tie products with complex injection molding structures and long and narrow flow knives.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to nylon composite materials and a preparation method and application thereof. Background technique [0002] Nylon (PA66) material has superior comprehensive properties, for example, it not only has excellent mechanical strength, stiffness, toughness, mechanical vibration damping and wear resistance, but also has good electrical insulation ability and chemical resistance. This makes PA66 material a "universal grade" material that can be used in the manufacture of mechanical structural parts and maintenance parts. [0003] At present, there are many modified PA66 materials on the market, which are good materials to replace steel, iron, copper and other metals, and are also important engineering plastics, which can widely replace wear-resistant parts of mechanical equipment and make wear-resistant parts and transmission structures. Nowadays, there will be shadows of modifie...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L77/06C08L51/06C08L23/08C08L23/20
CPCC08L77/06C08L2205/035C08L2201/08C08L51/06C08L23/0869C08L23/20
Inventor帅骥陈勇杨兴成付金鹏葛洪柱何征吴宪
Owner江苏沃特新材料科技有限公司