Halogen-free flame retardant polyamide material and preparation method thereof

A flame-retardant polyamide and polyamide technology, applied in the field of halogen-free flame-retardant polyamide materials and their preparation, can solve the problems of large addition of halogen-free flame retardants, reduced mechanical properties, and low glow-wire ignition temperature, and achieve Excellent flame retardancy and mechanical properties, reduced cost, and improved ignition temperature

Inactive Publication Date: 2014-10-01
SUZHOU CHUANGJIA PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the halogen-free flame retardant modified polyamide is less toxic and environmentally friendly compared with the bromine-antimony flame retardant system, its disadvantages are very obvious. It remains high, and there is still the disadvantage of low glow wire ignition temperature (GWIT), which limits its application in low-voltage electrical and other fields that require high GWIT.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) First mix 40 parts of polyamide EPR24, 1 part of lubricant ethylene bis stearic acid amide EBS (P-130), 0.5 parts of antioxidant 1098, 0.5 parts of antioxidant 168, then add 15 parts of hypophosphite OP1312, 3 parts of silicon stannate are mixed to obtain a mixed material;

[0030] 2) Add the mixed material from the main feeding port of the twin-screw extruder, and then add 40 parts of the reinforcing modifier non-alkali glass fiber ECS301HP from the side feeding port of the extruder, melt extruding, cooling, cutting The flame-retardant polyamide material can be obtained by pelletizing; the temperature of the twin-screw extruder from the feed section to the head is 240°C, 275°C, 280°C, 275°C, 270°C, 265°C, 265°C and 260°C respectively , Die temperature 270°C.

Embodiment 2

[0032] 1) First mix 58 parts of polyamide M1013B, 0.2 part of lubricant ethylene bis stearic acid amide EBS (P-130), 0.1 part of antioxidant 1098, 0.2 part of antioxidant 168, and then add 10 parts of halogen-free flame retardant Hypophosphite OP1312, 6.5 parts of silicon stannate mixed, mixed materials;

[0033] 2) Add the mixed material from the main feed of the twin-screw extruder, and then add 25 parts of the reinforcing modifier non-alkali glass fiber ECS301HP from the feeding port of the extruder, and melt extrude, cool and pelletize The flame retardant polyamide material can be obtained; the temperature of the twin-screw extruder from the feed section to the head is respectively: 210°C, 230°C, 245°C, 245°C, 240°C, 235°C, 230°C and 230°C , Die temperature 235°C.

Embodiment 3

[0035] 1) First mix 40 parts of polyamide EPR24 and 32 parts of M1013B, 0.4 parts of lubricant ethylene bis stearic acid amide EBS (P-130), 0.3 parts of antioxidant 1098, 0.3 parts of antioxidant 168, and then add 15 parts of no The halogen flame retardant hypophosphite OP1312 is mixed with 9 parts of silicon stannate to obtain the mixed material;

[0036] 2) Add the mixed material from the main feed of the twin-screw extruder, and obtain the flame-retardant polyamide material through melt extrusion, cooling and cutting; the temperature of the twin-screw extruder is from the feed section to the head They are: 220°C, 260°C, 265°C, 265°C, 260°C, 255°C, 260°C and 260°C, and the die head temperature is 260°C.

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PUM

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Abstract

The invention discloses a halogen-free flame retardant polyamide material which is mainly prepared from the following components in parts by weight: 40-72 parts of polyamide, 8-15 parts of a halogen-free flame retardant, 3-9 parts of a flame retardant synergist, 0.5-2 parts of a processing aid and 0-40 parts of a reinforcing modifier, wherein the halogen-free flame retardant is hypophosphite and the flame retardant synergist is silicon stannate with the silicon content being 30-60%. By adding the flame retardant synergist silicon stannate to reduce the use level of the halogen-free flame retardant hypophosphite, the flame retardant performance and the mechanical property are more excellent than those of a flame retardant material without adding silicon stannate, so that the cost is lowered. For the flame retardant material without adding silicon stannate, in spite of high content of the halogen-free flame retardant hypophosphite, the GWIT (Glow Wire Ignition Temperature) still cannot reach 960 DEG C. By adding silicon stannate, the GWIT of the material is greatly enhanced and substantially reaches 960 DEG C.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant polyamide material and a preparation method thereof. Background technique [0002] Polyamide resin has excellent properties such as wear resistance, oil resistance, impact resistance, fatigue resistance, corrosion resistance, excellent self-lubrication performance, and small friction coefficient, and is widely used. Flame-retardant modified polyamide is widely used in the fields of electronics, electricity, transportation, electric tools and mechanical parts due to its outstanding mechanical properties and excellent flame-retardant properties. Bromine-antimony flame retardant modification technology has been a common technology for flame retardant modified polyamides due to the small amount of flame retardant added and high flame retardant efficiency. However, bromine-antimony flame retardants have the disadvantage of high toxicity. In recent years, with people's increasing requirements for envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/06C08L77/02C08K3/32C08K3/34C08K7/14B29C47/92B29C48/92
CPCB29B7/46B29B9/06B29B9/14B29B7/90B29C47/92B29B7/72B29C2947/92266B29C48/92B29C2948/92704C08K3/32C08K3/34C08K7/14C08K13/04C08L77/02C08L77/06C08L2201/02C08L2201/22B29C48/40B29C2948/92266
Inventor 储卫国
Owner SUZHOU CHUANGJIA PLASTIC
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