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Toughened plasticized nylon 612 composite material and preparation method and applications thereof

A composite material and nylon technology, applied in the polymer field, can solve the problems of low flexibility and high rigidity of nylon 612, and achieve the effects of convenient preparation, low cost and improved temperature resistance.

Inactive Publication Date: 2014-02-26
SUZHOU POLYMER NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nylon 612 has high rigidity and low flexibility, so it must be modified to meet the requirements of practical applications.

Method used

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  • Toughened plasticized nylon 612 composite material and preparation method and applications thereof

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preparation example Construction

[0028] The preparation method of toughened and plasticized nylon 612 composite material comprises the following steps:

[0029] Step 1) Add nylon 612, toughening agent, lubricant and antioxidant to a mixer and stir at 150 rpm for 2 minutes, and then discharge the material to obtain a premix;

[0030] Step 2) Add the premix obtained in Step 1 to the main feeding hopper of the twin-screw extruder, and the plasticizer is added from the side feeding port through a liquid pump. The extrusion temperature is between 200°C and 250°C, and the screw speed is at 150 rpm.

[0031] Toughened and plasticized nylon 612 composites are applied to automobile brake tubes.

Embodiment 1

[0033] Add 10kg of nylon 612, 2kg of POE, 1kg of POE-MAH, 150g of calcium stearate, 50g of antioxidant 1010 and 100g of antioxidant 168 into a mixer and stir at 150 rpm for 2 minutes before discharging. The premix was added to the main feed bin of a twin-screw extruder with a screw diameter of 36 mm. Use a liquid pump to add 3kg of N-butylbenzenesulfonamide to the side feeding port, control the temperature at 210°C-230°C, and control the screw speed at 150 rpm, pull the strands, cool, and pelletize. The particles were dried in an oven at 80°C for 5 hours, and then injected into standard ISO specimens to test the isotropic properties. The test results are shown in Table 1.

Embodiment 2

[0035] 10kg of nylon 612, 2kg of POE, 1kg of sodium salt of ethylene acrylic acid, 150g of calcium stearate, 50g of antioxidant 1010 and 100g of antioxidant 168 were added to a mixer and stirred at 150 rpm for 2 minutes to discharge. The premix was added to the main feed bin of a twin-screw extruder with a screw diameter of 36 mm. Add 3kg of N-butylbenzenesulfonamide to the side feeding port with a liquid pump, control the temperature at 210°C-230°C, and control the screw speed at 150 rpm, pull strands, cool, and pelletize. The particles were dried in an oven at 80°C for 5 hours, and then injected into standard ISO specimens to test the isotropic properties. The test results are shown in Table 1.

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Abstract

The invention discloses a toughened plasticized nylon 612 composite material and a preparation method and applications thereof. The preparation method comprises the steps of: by taking polyolefin or polyolefin-grafted maleic anhydride or polyolefin-acrylic ester copolymer or polyolefin acrylic ester ion slats or compound thereof as a toughening agent, and N-n-butylbenzenesulfonamide or N-ethyl-o / p-toluenesulfonamide or a compound thereof as a plasticizer, adding a lubricant and an antioxidant, fusing and extruding in a double-screw extruder to obtain the toughened plasticized nylon 612 composite material. The comprehensive performances of the toughened plasticized nylon 612 composite material can meet the application demand of an automobile braking tube.

Description

technical field [0001] The invention belongs to the field of macromolecules, and specifically relates to a toughened and plasticized nylon 612 composite material and a preparation method and application thereof. Background technique [0002] Automobile brake pipe is a very important part in the whole automobile system, which is directly related to the driving safety of the automobile. SAEJ844-1998 introduced the technical indicators of the brake tube in detail, requiring sufficient burst pressure resistance, excellent flexibility, good dimensional stability, zinc chloride resistance, methanol resistance, and meeting the long-term working requirements of -40°C to 110°C . [0003] At present, the materials of automobile brake tubes are mainly plasticized nylon 11 and nylon 12 materials, and the polymerization technology of nylon 11 and nylon 12 materials is still monopolized by several major chemical giants in the world, such as Arkema, Evonik, Aiman Si et al. Therefore, th...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L23/00C08L51/06C08L23/08B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08L77/06C08L2203/18C08L2205/03C08L23/0815C08L51/06C08K5/098C08K5/435C08L23/0876C08L23/0869B29C48/40B29C2948/9259B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 杨振枢翟红波韦洪屹
Owner SUZHOU POLYMER NEW MATERIALS TECH
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