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MCA (Melamine Cyanurate) flame-retardant polycaprolactam compound material and preparation method thereof

A technology of polycaprolactam and composite materials, which is applied in the field of MCA flame-retardant polycaprolactam composite materials and its preparation, can solve the problems of negative impact on the mechanical properties of materials, and achieve the goal of improving compatibility, increasing strength and toughness, and increasing the amount of addition Effect

Inactive Publication Date: 2012-02-29
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, MCA is a kind of rigid particle with a large particle size, so traditional MCA has a negative impact on the mechanical properties of the material, and the density of MCA is relatively small.

Method used

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  • MCA (Melamine Cyanurate) flame-retardant polycaprolactam compound material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The MCA flame-retardant polycaprolactam composite material of this embodiment, by weight percentage, is made up of following components:

[0027] PA6 89.8%; MCA 10%; Antioxidant 1010 0.1%; Antioxidant 168 0.1%;

[0028] Its preparation method is as follows:

[0029] Step 1, take PA6, MCA and antioxidant 1010, antioxidant 168 by weight percentage as mentioned above;

[0030] Step 2, put the weighed PA6, MCA and antioxidants 1010, 168 into a high-speed mixer and mix for 3 minutes;

[0031] Step 3: Add the mixed materials into the hopper of the twin-screw extruder, melt and react, extrude and granulate; the process conditions are: the temperature of the first zone of the twin-screw extruder is 140°C, the temperature of the second zone is 190°C, The temperature in the third zone is 220°C, the temperature in the fourth zone is 230°C, the temperature of the head is 180°C, the residence time is 2min, the pressure is 12MPa, and the screw speed is 130r / min.

Embodiment 2

[0033] The MCA flame-retardant polycaprolactam composite material of this embodiment, by weight percentage, is made up of following components:

[0034] PA6 79.7%; MCA 20%; Antioxidant 1010 0.15%; Antioxidant 168 0.15%;

[0035] Its preparation method is as follows:

[0036] Step 1, take PA6, MCA and antioxidant 1010, antioxidant 168 by weight percentage as mentioned above;

[0037] Step 2, put the weighed PA6, MCA and antioxidants 1010, 168 into a high-speed mixer and mix for 5 minutes;

[0038] Step 3: Add the mixed materials into the hopper of the twin-screw extruder, melt and react, extrude and granulate; the process conditions are: the temperature of the first zone of the twin-screw extruder is 180°C, the temperature of the second zone is 220°C, The temperature in the third zone is 230°C, the temperature in the fourth zone is 250°C, the temperature of the head is 220°C, the residence time is 3min, the pressure is 18MPa, and the screw speed is 150r / min.

Embodiment 3

[0040] The MCA flame-retardant polycaprolactam composite material of this embodiment, by weight percentage, is made up of following components:

[0041] PA6 74.6%; MCA 25%; Antioxidant 1010 0.2%; Antioxidant 168 0.2%;

[0042] Its preparation method is as follows:

[0043] Step 1, take PA6, MCA and antioxidant 1010, antioxidant 168 by weight percentage as mentioned above;

[0044] Step 2, put the weighed PA6, MCA and antioxidants 1010, 168 into a high-speed mixer and mix for 4 minutes;

[0045] Step 3: Add the mixed materials into the hopper of the twin-screw extruder, melt and react, extrude and granulate; the process conditions are: the temperature of the first zone of the twin-screw extruder is 160°C, the temperature of the second zone is 200°C, The temperature in the third zone is 225°C, the temperature in the fourth zone is 240°C, the temperature of the head is 205°C, the residence time is 2.5min, the pressure is 15MPa, and the screw speed is 140r / min.

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Abstract

The invention discloses an MCA (Melamine Cyanurate) flame-retardant polycaprolactam compound material and a preparation method thereof. The compound material comprises the following components in percentage by weight: 69.6-89.8 percent of PA6 (Poly Amide), 10-30 percent of MCA and 0.2-0.4 percent of antioxidant, wherein the MCA is subjected to modification treatment. A process of the modification treatment is as follows: preparing a solution by mixing coupling agent, absolute ethyl alcohol and distilled water, a volume ratio of which is 60:4:36; adding a drop of glacial acetic acid into the prepared solution by using a dropper, thereby forming a mixed solution; adding the MCA into a high-speed mixer, dry-mixing for 10-20 minutes, and slowly injecting the mixed solution into the high-speed mixer from an injection port of the high-speed mixer when the temperature rises to 40-50 DEG C, and then mixing for 20-30 minutes. According to the preparation method, the MCA is subjected to modification treatment, thereby improving the compatibility between the MCA and the matrix PA6, increasing the additive amount of the MCA and reducing the production cost.

Description

[technical field] [0001] The invention relates to the field of polymer materials, in particular to an MCA flame-retardant polycaprolactam composite material and a preparation method thereof. [Background technique] [0002] PA6 has excellent mechanical properties, good wear resistance, heat resistance, weather resistance and electrical insulation, and has been widely used in the automotive industry, electrical and electronic, machinery, packaging film and other industries. However, as an organic material, the limiting oxygen index (LOI) of PA6 is only 23, which is easy to burn, and the high heat of burning droplets can also easily cause secondary combustion, especially in harsh environments such as high humidity, high temperature, high voltage and other conditions However, the risk of flame propagation is increased, which limits its application in the fields of electronics, transportation and other fields. In recent years, many researchers at home and abroad have conducted i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K9/06C08K5/3492C08K5/134C08K5/526B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/92514B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 徐东徐永邢家思
Owner SHENZHEN KEJU NEW MATERIAL