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Heat and flame resistant nylon composite

A technology of flame-retardant nylon and its composition, which is applied in the field of polymer materials used in the electrical and electronic industry. It can solve the problems of dust pollution, low thermal stability, and severe melting droplets, etc., and achieve good flame-retardant performance, thermal performance and electrical insulation. Performance maintenance and improvement of flame retardant performance

Inactive Publication Date: 2010-06-16
SINOPLAST NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although red phosphorus has the advantages of less addition and wide application, ordinary red phosphorus is easy to absorb moisture, has poor compatibility with polymer materials, and is particularly prone to spontaneous combustion, so it cannot be used in practice.
Although the use of microencapsulated red phosphorus flame retardant reduces the activity of red phosphorus and solves the compatibility. The content of red phosphorus is about 85%, but the problem of spontaneous combustion has not been effectively solved, and the dust pollution is serious
Ammonium polyphosphate has the characteristics of high phosphorus content and less addition, but its main disadvantages are strong hygroscopicity and low thermal stability
Polymelamine phosphate is another kind of environmentally friendly flame retardant widely used in nylon. Compared with ammonium polyphosphate, although its thermal stability is improved, the phosphorus content is low, and the flame retardant performance is not significantly improved.
Melamine cyanurate is also commonly used in nylon flame retardancy. It is characterized by low toxicity, no corrosion, and heat and ultraviolet stability. Poor, unable to reach UL94-V0 level
With the wide application of flame-retardant polymer materials in the electronics industry, the requirements for the glow-wire test are getting higher and higher, and it is difficult for ordinary flame-retardant nylon compositions to pass the 850°C glow-wire test

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Melt and extrude 2 kg of phosphinate flame retardant Exolit 1312, 1 kg of melamine polyphosphate, 0.5 kg of zinc sulfide, 20 kg of glass fiber and 76.5 kg of nylon 66 through a twin-screw extruder at 220-300 °C The heat-resistant and flame-retardant nylon pellets are produced, and then the heat-resistant and flame-retardant nylon pellets are injected into mechanical, thermal and flame-retardant standard splines through an injection molding machine at 220-300 ° C. The relevant properties are measured according to the standards. The specific data are listed in Table 1.

Embodiment 2

[0013] 2 kg of phosphinate flame retardant Exolit 1240, 4 kg of melamine polyphosphate, 1 kg of zinc borate, 30 kg of glass fiber and 63 kg of nylon 610 were melt-extruded through a twin-screw extruder at 220-300 °C The heat-resistant and flame-retardant nylon pellets are produced, and then the heat-resistant and flame-retardant nylon pellets are injected into mechanical, thermal and flame-retardant standard splines through an injection molding machine at 220-300 ° C. The relevant properties are measured according to the standards. The specific data are listed in Table 1.

Embodiment 3

[0015] Melt and extrude 10 kg of ammonium phosphate, 5 kg of melamine cyanurate, 0.5 kg of magnesium sulfide, 30 kg of carbon fiber, 0.5 kg of hindered phenol stabilizer and 54 kg of nylon 6T through a twin-screw extruder at 220-300 °C Prepare the heat-resistant and flame-retardant nylon pellets, and then inject the heat-resistant and flame-retardant nylon pellets into mechanical, thermal and flame-retardant standard splines through an injection molding machine at 220-300°C, and measure the relevant properties according to the standards. The specific data are listed in the table 1.

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PUM

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Abstract

The invention relates to heat and flame resistant nylon composite belonging to the filed of the electrical and electronic material. The heat and flame resistant nylon composite is characterized by comprising phosphorus flame retardant, nitrogen flame retardant, inorganic synergist, filler and auxiliary agent facilitating the processing and stabilizing. Due to the synergistic effect of the phosphorus flame retardant, the nitrogen flame retardant and the inorganic synergist, the nylon has the flame resistance, mains the mechanical performance, the thermal performance and the electrical insulating performance and can pass the test of the glow wire at 850 DEG C, and the problems that the defect of the nylon product is increased and the mechanical performance and the electrical insulating performance of the nylon produce are decreased due to the large consumption of the phosphorus flame retardant are solved. The heat and flame resistant nylon composite has good flame resistance, mechanical performance, thermal performance and electrical insulating performance and is mainly applied to the electrical and electronic industry.

Description

technical field [0001] The invention relates to a heat-resistant and flame-retardant nylon composition, more specifically, the invention relates to a high-temperature-resistant, halogen-free flame-retardant nylon composition capable of passing the 850°C glow wire test, which belongs to a kind of nylon composition used in the electrical and electronic industry. Polymer Materials. Background technique [0002] Due to its outstanding advantages in terms of mechanical properties, chemical properties, and thermal properties, nylon has become the base resin with the largest output, the most varieties, the widest range of uses, and excellent comprehensive properties among the five general-purpose engineering plastics. With the rapid development of the electrical and electronic industry and other special industries, nylon, as the most widely used engineering plastic, is facing more and more harsh environments, such as high temperature, high humidity, high voltage, and high load. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K13/02C08K3/38C08K3/30
Inventor 朱怀才洪喜军
Owner SINOPLAST NEW MATERIAL
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