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Heat-resistant, salt-resistant and low-water-absorption-rate nylon composite material and preparation method thereof

A nylon composite material and heat-resistant agent technology, applied in the field of nylon composite materials, can solve the problems of poor dimensional stability and high water absorption, and achieve the effects of reducing water absorption, preventing yellowing, and reducing absorption speed

Inactive Publication Date: 2017-11-07
ZHEJIANG GOLDENSEA ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The shortcomings of nylon are high water absorption and poor dimensional stability. Generally, it can be overcome by modification methods such as reinforcement, toughening, and filling, and other properties can be greatly improved.

Method used

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  • Heat-resistant, salt-resistant and low-water-absorption-rate nylon composite material and preparation method thereof
  • Heat-resistant, salt-resistant and low-water-absorption-rate nylon composite material and preparation method thereof
  • Heat-resistant, salt-resistant and low-water-absorption-rate nylon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] According to formula 1 in Table 1 below, mix 35 kg of PA610 resin, 10 kg of modified polyphenylene oxide MPPO, 0.20 kg of antioxidant, 0.20 kg of lubricant, and 20.00 kg of PA66 resin. Then, stir at high speed for 5 minutes and put it into the premix funnel. The glass fiber is added to the twin-screw extruder through a loss-in-weight feeding system for extrusion, after cooling, stretching, pelletizing, screening, drying, mixing, weighing, and packaging.

[0059] In this embodiment, the temperature of the twin-screw extruder is set as follows:

[0060] C1: 150℃, C2~C3: 250~300℃, C4~C8: 250~300℃ and CH: 250~300℃.

[0061] The flow rate is set as: (50±5) kg / h.

[0062] Rotation speed is set as: (200±50) revolutions per minute (rpm)

[0063] The torque setting is: (60±5)%

[0064] The vacuum requirements are as follows:

[0065] The first vacuum: ≤-0.08MPa; and

[0066] The second vacuum: ≤-0.08MPa.

Embodiment 2

[0068] According to formula 2 in Table 1 below, 35 kg of PA610 resin, 10 kg of modified polyphenylene ether MPPO, and 0.5 kg of potassium iodide aqueous solution were mixed and stirred for 3 minutes. Then add 0.20 kg of antioxidant, 0.20 kg of lubricant, and 0.04 kg of heat-resistant agent, and mix. Then add 20.00 kg of PA66 resin. Then, stir at high speed for 5 minutes and put it into the premix funnel. The glass fiber is added to the twin-screw extruder through a loss-in-weight feeding system for extrusion, after cooling, stretching, pelletizing, screening, drying, mixing, weighing, and packaging.

[0069] In this embodiment, the temperature of the twin-screw extruder is set as follows:

[0070] C1: 150℃, C2~C3: 250~300℃, C4~C8: 250~300℃ and CH: 250~300℃.

[0071] The flow rate is set as: (50±5) kg / h.

[0072] Rotation speed is set as: (200±50) revolutions per minute (rpm)

[0073] The torque setting is: (60±5)%

[0074] The vacuum requirements are as follows:

[0075] The first vac...

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Abstract

The invention relates to a heat-resistant, salt-resistant and low-water-absorption-rate nylon composite material and a preparation method thereof. The nylon composite material contains the following components in parts by weight: 25.0-80.0 parts of polyhexamethylene adipamide, 25.0-45.0 parts of polyhexamethylene sebacamide, 5.0-20.0 parts of modified polyphenyl ether and 15.0-30.0 parts of thin-diameter glass fibers. The nylon composite material has good high temperature resistance and thermo-oxidative aging resistance and excellent glycol resistance and calcium chloride water solution corrosion resistance and can completely meet requirements of parts of automobiles such as a cooling water tank, a thermostat and an intercooler.

Description

Technical field [0001] The invention relates to a nylon composite material with heat resistance, salt resistance and low water absorption and a method for preparing the nylon composite material. technical background [0002] As the first of the five engineering plastics, nylon is widely used. Because nylon is strong, self-lubricating, heat-resistant, oil-resistant, etc., it is widely used in automotive radiator cooling water tanks, electronic appliances, connectors, mechanical parts, OA equipment, packaging, etc. [0003] Glass fiber reinforced nylon series products have excellent mechanical strength, high rigidity, high modulus, high hardness, creep resistance, high and low temperature resistance, and can be used as high and low temperature structural parts; at the same time, they have low moisture absorption and mold shrinkage. Low and good electrical insulation characteristics, can be used for various electronic and electrical components, coil bobbin, automobile parts and mecha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L71/12C08K13/04C08K7/14C08K3/16
CPCC08L77/06C08K2201/003C08K2201/014C08L2201/08C08L2205/025C08L2205/03C08L2310/00C08L71/12C08K13/04C08K7/14C08K3/16
Inventor 丁伊可朱雄波
Owner ZHEJIANG GOLDENSEA ENVIRONMENT TECH