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Environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon and preparation process thereof

A preparation process and environment-friendly technology, which is applied in the field of environment-friendly natural white halogen-free reinforced flame-retardant high-temperature nylon and its preparation process, can solve the problem that cannot meet the continuous miniaturization trend of integrated circuit boards and surface mount technology, which affects appearance and environment. Pollution and other issues, to meet the requirements of heat resistance and fire prevention, improve production efficiency, and broad market prospects

Inactive Publication Date: 2011-05-25
QINGDAO COMPOLY HIGH PERFORMANCE POLYMERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, engineering plastics such as PA66 and PBT in the domestic market cannot meet the temperature requirements above 265°C, but they cannot meet the continuous miniaturization trend of integrated circuit boards and the technical requirements of surface mount technology (SMT), which limits the development of the industry
In addition, most of the existing flame-retardant high-temperature nylons use halogen-based flame retardants, which are likely to cause environmental pollution
At present, the appearance of high-temperature nylon independently produced in China is difficult to be white, and the halogen-free flame-retardant high-temperature nylon can only be black or dark gray, which affects the appearance

Method used

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  • Environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon and preparation process thereof
  • Environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon and preparation process thereof
  • Environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon and preparation process thereof

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Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0026] Specific embodiment one: 35kg high-temperature nylon resin is dried in the blast dryer, and the set temperature in the blast dryer is 105°C, and the drying time is 6 hours, so that the final water content is 0.2%; High-temperature nylon resin, 6kg halogen-free environmentally friendly flame retardant, 0.08kg antioxidant, 0.03kg nucleating agent and 0.07kg lubricant were mixed in a high-speed mixer for 5 minutes while keeping the temperature at 40°C; Extruded by a twin-screw extruder, 10kg of long glass fibers are added through side feeding, the temperature is set at 320°C, and the screw speed of the co-rotating twin-screw extruder is 280 rpm; finally, after water-cooled pelletizing and vibration screening , sealed waterproof packaging, made of environmentally friendly off-white halogen-free reinforced flame-retardant high-temperature nylon.

specific Embodiment 2

[0027] Specific embodiment two: 50kg high-temperature nylon resin is dried in the blast dryer, and the set temperature in the blast dryer is 112°C, and the drying time is 10 hours, so that the final water content is 0.1%; High-temperature nylon resin, 18kg halogen-free environmentally friendly flame retardant, 0.13kg antioxidant, 0.08kg nucleating agent and 0.15kg lubricant were mixed in a high-speed mixer for 5 minutes while keeping the temperature at 75°C; Extruded by a twin-screw extruder, 30kg of long glass fibers are added through side feeding, the temperature is set at 318°C, and the screw speed of the co-rotating twin-screw extruder is 330 rpm; finally, after water-cooled pelletizing and vibration screening , sealed waterproof packaging, made of environmentally friendly off-white halogen-free reinforced flame-retardant high-temperature nylon.

specific Embodiment 3

[0028] Specific embodiment three: 75kg high-temperature nylon resin is carried out drying treatment in blast drier, and setting temperature in blast drier is 120 ℃, and drying time is 8 hours, makes final water content at 0.16%; High-temperature nylon resin, 25kg halogen-free environmentally friendly flame retardant, 0.11kg antioxidant, 0.12kg nucleating agent and 0.2kg lubricant were mixed in a high-speed mixer for 5 minutes while keeping the temperature at 55°C; Extruded by a twin-screw extruder, 50kg of long glass fibers are added through side feeding, the temperature is set at 315°C, and the screw speed of the co-rotating twin-screw extruder is 300 rpm; finally, after water-cooled pelletizing and vibration screening , sealed waterproof packaging, made of environmentally friendly off-white halogen-free reinforced flame-retardant high-temperature nylon.

[0029] Product performance test report:

[0030] Test items

[0031]

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Abstract

The invention relates to environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon. The nylon comprises the following components in part by weight: 35 to 75 parts of high-temperature nylon resin, 4 to 25 parts of flame retardant, 0.1 to 0.5 part of auxiliary agent and 10 to 50 parts of reinforced material. The preparation method for the nylon comprises the following steps of: 1) drying; 2) mixing; 3) extruding; and 4) molding and pelletizing. The product has the advantages of high strength, high flame resistance, high size stability, high temperature resistance, environment friendliness and the like. An antioxidant can play a role in anti-oxidizing protecting, maintains the stability of materials of the product in production, and protects the flame retardant and the high-temperature nylon resin from oxidative discoloration and decomposition; and a nucleating agent and a lubricating agent can improve the fluidity of the product, speed up the cooling and the forming of the product, improve the production efficiency of the product in injection machining, and contribute to demoulding the products in the injection molding. The environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon can be used in circuit breakers, socket connectors such as power connectors, storage card connectors and sockets, motor components, computers and auxiliary equipment thereof, electric products, household electric appliance and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an environment-friendly off-white halogen-free reinforced flame-retardant high-temperature nylon and a preparation process thereof. Background technique [0002] As the largest and most important variety of engineering plastics, nylon has strong vitality, mainly because it achieves high performance after modification. At the same time, industries such as automobiles, electrical appliances, communications, electronics, and machinery have increasingly high performance requirements for products. Strongly, the rapid development of related industries has promoted the process of high-performance engineering plastics. Nylon has great potential in the electrical and electronic industries. In electrical small parts, dense contact pins require plastic materials with high leakage resistance (CTI). At the same time, due to the trend of miniaturization of electrical equipment or th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K13/06C08K9/06C08K7/14
Inventor 朱春林郑典君姜沙沙张洁张静
Owner QINGDAO COMPOLY HIGH PERFORMANCE POLYMERS
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