Halogen-free flame retardant and glass fiber reinforced PA (polyamide) 66 composite material with acid and alkali resistance and preparation method of PA66 composite material

A flame-retardant glass fiber and composite material technology, applied in the field of new varieties of modified engineering plastics, can solve problems such as insufficient acid and alkali resistance, and achieve the effects of overcoming the insufficient acid and alkali resistance, good processing fluidity, and excellent mechanical properties

Inactive Publication Date: 2015-11-18
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite material has strong acid and alkali resistance, good processing fluidity, excellent mechanical properties, heat resistance and flame retardancy, and well overcomes the problem of insufficient acid and alkali resistance in the prior art nylon products

Method used

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  • Halogen-free flame retardant and glass fiber reinforced PA (polyamide) 66 composite material with acid and alkali resistance and preparation method of PA66 composite material
  • Halogen-free flame retardant and glass fiber reinforced PA (polyamide) 66 composite material with acid and alkali resistance and preparation method of PA66 composite material
  • Halogen-free flame retardant and glass fiber reinforced PA (polyamide) 66 composite material with acid and alkali resistance and preparation method of PA66 composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Add 12 parts of ammonium polyphosphate and 6 parts of zinc borate into the high-speed mixer and stir for 10 minutes, add 0.1 part of KH550, continue stirring for 2 minutes, add 46.5 parts of PA66 resin, and 5 parts of other various additives and 0.4 parts of composite coupling agent (0.15 parts of KH550, 0.25 parts of KH560) were stirred by a high-speed mixer for 4 minutes and then taken out to obtain the mixture;

[0036](2) Put the mixture obtained in step (1) into the main feed, adjust the number of glass fiber strands to control the glass fiber content to 30 parts, extrude through a twin-screw extruder, draw strands, cool, pelletize, and dry The speed of the main screw is 240 rpm, and the temperature of each section of the extruder is 235°C, 270°C, 275°C, 270°C, 270°C, 265°C, 260°C, 260°C from the feeding port to the die head. °C, 265 °C;

[0037] (3) Injection mold the masterbatch into a standard sample, the injection temperature ranges are 270°C, 270°C, 265°C...

Embodiment 2

[0041] (1) Add 16 parts of melamine phosphate, 5 parts of zinc borate and 3 parts of talcum powder into the high-speed mixer and stir for 10 minutes, then add 0.1 part of KH550, continue stirring for 5 minutes, then add 57.15 parts of nylon 66 resin, 5 parts of other various additives, 0.25 parts of KH550, 3.5 parts of epoxy resin (molecular weight: 2000) were taken out after a total of 6 minutes of stirring in a high-speed mixer;

[0042] (2) Put the mixed material obtained in step (1) into the main feed, adjust the number of glass fiber strands to control the glass fiber content to 10 parts, extrude through a twin-screw extruder, draw strands, cool, pelletize, and dry Processing; the main screw speed is 190 rpm, and the temperature of each section of the extruder from the feeding port to the machine head is 235°C, 265°C, 270°C, 265°C, 265°C, 265°C, 260°C, 260°C, 260°C;

[0043] (3) The masterbatch was injection molded into a standard sample, the injection molding temperatur...

Embodiment 3

[0047] (1) Add 9 parts of melamine and 9 parts of phosphinate into a high-speed mixer and stir for 10 minutes, add 0.1 part of KH550, continue stirring for 2 minutes, add 37.7 parts of nylon 66 resin, and other various additives 5 parts, 0.20 parts of KH550, 4 parts of epoxy resin (molecular weight is 10000) take out after stirring in a high-speed mixer for 5 minutes;

[0048] (2) Put the mixed material obtained in step (1) into the main feed, adjust the number of glass fiber strands to control the glass fiber content to 35 parts, extrude through a twin-screw extruder, draw strands, cool, pelletize, and dry Processing; the main screw speed is 260 rpm, and the temperature of each section of the extruder is 240°C, 275°C, 275°C, 270°C, 270°C, 265°C, 265°C, 265°C, 270°C;

[0049] (3) Injection mold the masterbatch into a standard sample, the injection molding temperature is 275°C, 270°C, 270°C, 265°C respectively, and the injection mold temperature is 90°C.

[0050] (4) Place 10...

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Abstract

The invention discloses a halogen-free flame retardant and glass fiber reinforced PA (polyamide) 66 composite material with acid and alkali resistance. The PA66 composite material comprises raw materials in parts by weight as follows: 20-72.5 parts of PA66 resin, 10-35 parts of glass fiber, 12-30 parts of a halogen-free flame retardant, 0.5-10 parts of a composite coupling agent and 5 parts of an auxiliary, wherein the composite coupling agent is selected from a mixture formed by mixing gamma-aminopropyl triethoxysilane with gamma-epoxy propoxy propyl trimethoxysilane or epoxy resin in the weight ratio being 1: (1-50). The composite material has higher acid and alkali resistance, good processing fluidity as well as excellent mechanical properties, heat resistance and flame retardation, the problem of insufficient acid and alkali resistance of PA products in the prior art is particularly solved, the acid and alkali resistance is improved remarkably, and the composite material has broad market prospects.

Description

technical field [0001] The invention relates to the technical field of new varieties of modified engineering plastics. More specifically, it relates to an acid and alkali-resistant halogen-free flame-retardant glass fiber reinforced nylon 66 composite material and a preparation method thereof. Background technique [0002] Nylon 66 (PA66) is the earliest successfully developed nylon variety. It was produced in 1935 and industrialized by the DuPont Company of the United States in 1939. It is currently the most important nylon variety. Due to the strong molecular polarity and high water absorption rate of PA66, it has great influence on mechanical properties and electrical properties, poor acid resistance, and large dimensional change rate in humid environment. Therefore, research on flame retardant enhancement of nylon is becoming more and more important. The flame retardancy and mechanical properties of nylon have become crucial factors in many occasions, especially in ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L63/02C08K13/04C08K7/14C08K3/32C08K3/38C08K5/544C08K5/5435C08K5/52C08K3/34C08K5/3492C08K5/5313C08K3/02C08K3/22C08K5/521C08K3/36
CPCC08K3/32C08K3/38C08K5/5435C08K5/544C08K7/14C08K13/04C08K2003/323C08L77/06C08L2201/02C08L2201/22C08L63/00C08K5/5205C08K3/34C08K5/34922C08K5/5313C08K2003/026C08K2003/2255C08K5/521C08K2003/2224C08K3/36
Inventor 耿建新许林利丁斌王成望黄勇蒋士冬
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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