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Phosphorus silicon type inflaming retarding and non-enhancing PA66 composite material and preparation method thereof

A technology of PA66 and composite materials, applied in the field of phosphor-silicon flame retardant non-reinforced PA66 composite materials and their preparation, can solve the problems of great influence on the mechanical properties of materials, unstable flame retardant effect, etc., to achieve improved temperature resistance, high relative Tracking index, the effect of enhancing compatibility

Inactive Publication Date: 2018-05-15
NANJING HONGRUI PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many flame retardants used for flame retardant of halogen-free PA66, such as red phosphorus flame retardant and MCA flame retardant, red phosphorus flame retardant can only be used for dark-colored products due to color restrictions; Satisfy the freedom of color tone selection, but its addition has a great impact on the mechanical properties of the material and the flame retardant effect is unstable

Method used

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  • Phosphorus silicon type inflaming retarding and non-enhancing PA66 composite material and preparation method thereof
  • Phosphorus silicon type inflaming retarding and non-enhancing PA66 composite material and preparation method thereof
  • Phosphorus silicon type inflaming retarding and non-enhancing PA66 composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] Take PA66 slices (Shenma EPR27) 55KG, PA6 slices (Polymer Shun J2500) 35KG, phosphorus silicon flame retardant 10KG, antioxidant 1010 (Abemarle) 180g and antioxidant 168 (Abemarle) 20g, surface treatment agent ( Silane coupling agent KH560) 200g.

[0028] The preparation method of phosphorus silicon flame retardant non-reinforced PA66 composite material is:

[0029] 1) First put PA66 in a drying oven to remove surface moisture. The oven temperature is 120°C for 4 hours.

[0030] 2) Mix the dried PA66 slices and the surface treatment agent with a high-speed mixer (mixing time 8 minutes, stirring speed 1500r / min).

[0031] 3) Premix the antioxidant and the flame retardant at 500r / min for 8 minutes, then add to the mixture, and stir evenly to obtain the premix.

[0032] 4) Add the above premixed material into a twin-screw extruder to melt and extrude to granulate, the extrusion temperature is 265°C, and the screw speed is 300r / min.

Embodiment 2

[0034] Take PA66 slices (Shenma EPR27) 45KG, PA6 slices (Polymer Shun J2500) 45KG, phosphorus silicon flame retardant 10KG, antioxidant 1010 (Abemarle) 180g and antioxidant 168 (Abemarle) 20g, surface treatment agent ( Silane coupling agent KH560) 200g.

[0035] The preparation method of phosphorus silicon flame retardant non-reinforced PA66 composite material is:

[0036] 1) First put PA66 in a drying oven to remove surface moisture. The oven temperature is 120°C for 4 hours.

[0037] 2) Mix the dried PA66 slices and the surface treatment agent with a high-speed mixer (mixing time 8 minutes, stirring speed 1500r / min).

[0038] 3) Premix the antioxidant and the flame retardant at 500r / min for 8 minutes, then add to the mixture, and stir evenly to obtain the premix.

[0039] 4) The above-mentioned premixed material was added into a twin-screw extruder for melt extrusion and granulation, the extrusion temperature was 265° C., and the screw speed was 300 rpm.

Embodiment 3

[0041] Take PA66 slices (Shenma EPR27) 45KG, PA6 slices (Polymer Shun J2500) 40KG, phosphorus silicon flame retardant 15KG, antioxidant 1010 (Abemarle) 180g and antioxidant 168 (Abemarle) 20g, surface treatment agent ( Silane coupling agent KH560) 200g.

[0042] The preparation method of phosphorus silicon flame retardant non-reinforced PA66 composite material is:

[0043] 1) First put PA66 in a drying oven to remove surface moisture. The oven temperature is 120°C for 4 hours.

[0044] 2) Mix the dried PA66 slices and the surface treatment agent with a high-speed mixer (mixing time 8 minutes, stirring speed 1500r / min).

[0045] 3) Premix the antioxidant and the flame retardant at 500r / min for 8 minutes, then add to the mixture, and stir evenly to obtain the premix.

[0046] 4) The above-mentioned premixed material was added into a twin-screw extruder for melt extrusion and granulation, the extrusion temperature was 265° C., and the screw speed was 300 rpm.

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Abstract

The invention discloses a phosphorus silicon type inflaming retarding and non-enhancing PA66 composite material and a preparation method thereof. The phosphorus silicon type inflaming retarding and non-enhancing PA66 composite material comprises the following raw materials in parts by mass: 45-55 parts of PA66, 35-45 parts of PA6, 10-15 parts of an inflaming retardant, 0.1-0.2 part of an antioxidant, and 0.1-0.2 part of a surface treating agent, wherein the phosphorus silicon inflaming retardant is the inflaming retardant with a cage type heptaphenyl trisilicate silsesquioxane structure. According to the phosphorus silicon type inflaming retarding and non-enhancing PA66 composite material, the inflaming retarding performance and relative tracking index of the material can be improved on the premise that the material remains the mechanical property.

Description

technical field [0001] The invention relates to a phosphorus-silicon flame-retardant non-reinforced PA66 composite material and a preparation method thereof, belonging to the field of PA66 composite materials. Background technique [0002] Flame-retardant PA66 (polyamide 66) has a wide range of applications in the electrical and electronic industry, and is especially suitable for the manufacture of injection-molded electronic components used under high pressure, such as low-voltage vacuum contactors, circuit breakers, low-voltage switches, thin-walled electronic and electrical components, etc. With the implementation of EU ROHS and WEEK directives and the improvement of domestic environmental protection requirements, the traditional brominated flame retardant PA66 can no longer meet this requirement. In recent years, the demand for halogen-free plastic parts in electronic and electrical industrial products has become more and more urgent. At present, there are many flame re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08L83/04
Inventor 谢国元王圣武欧正清
Owner NANJING HONGRUI PLASTIC PROD
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