Nylon 66 impregnated ingredient and method of producing long glass fiber reinforced nylon 66 aggregate by utilizing ingredient

A long glass fiber and nylon technology, used in the production of nylon 66 pellets, can solve the problems of high melt viscosity and difficult to penetrate glass fiber tow, etc., and achieve low melt viscosity, good thermo-oxidative stability, and good matrix toughness. Effect

Inactive Publication Date: 2014-02-05
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the melt viscosity of general thermoplastics is high, and it is not easy to penetrate the glass fiber strands and cover each single filament.

Method used

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  • Nylon 66 impregnated ingredient and method of producing long glass fiber reinforced nylon 66 aggregate by utilizing ingredient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Nylon 66 dipping ingredients 1: Nylon 66 FYR 27 100 parts, compatibilizer POE-g-MAH 4 parts, coupling agent KH561 0.8 parts, zinc humate 0.8 parts, antioxidant 168 0.4 parts, antioxidant 1098 0.4 parts share. The temperatures of the feeding section, plasticizing section and compression section of the extruder are 220°C, 290°C and 310°C respectively. Nylon 66 ingredient 1 is extruded into a 310°C dipping die through a hot runner after being plasticized in the extruder. The glass fiber tow ER4301 is preheated from room temperature to 210°C and enters the dipping die, and is impregnated with nylon 66 melt at 310°C through the combined dipping die godet roller, and the dipped tow is cooled in a water tank and cut into 12mm pellets.

Embodiment 2

[0028]Nylon 66 dipping ingredients 2: Nylon 66 FYR 27 100 parts, compatibilizer POE-g-MAH 4 parts, coupling agent KH561 0.8 parts, zinc humate 0.4 parts, calcium stearate 0.4 parts, antioxidant 168 0.4 parts , 0.4 parts of antioxidant 1098, 0.2 parts of antioxidant DLTDP. The temperatures of the feeding section, plasticizing section and compression section of the extruder are 220°C, 290°C and 310°C respectively. Nylon 66 ingredient 2 is extruded into a 310°C dipping die through a hot runner after being heated and plasticized by the extruder. The glass fiber tow ER4301 is preheated from room temperature to 210°C and enters the dipping die, and is impregnated with nylon 66 melt at 310°C through the combined dipping die godet roller, and the dipped tow is cooled in a water tank and cut into 12mm pellets.

Embodiment 3

[0030] Nylon 66 dipping ingredients 3: 100 parts of nylon 66 FYR 27B, 6 parts of compatibilizer 1901 SEBS-MA, 1.2 parts of coupling agent KH561, 0.4 parts of zinc humate, 0.4 parts of zinc calcium humate, 0.2 parts of silicone powder , Antioxidant 168 0.4, Antioxidant 1098 0.4, Antioxidant DLTDP 0.2. The temperatures of the feeding section, plasticizing section and compression section of the extruder are 220°C, 290°C and 310°C respectively. Nylon 66 ingredient 3 is extruded into a 310°C dipping die through a hot runner after being heated and plasticized by the extruder. The glass fiber tow ER4301 is preheated from room temperature to 210°C and enters the dipping die, and is impregnated with nylon 66 melt at 310°C through the combined dipping die godet roller, and the dipped tow is cooled in a water tank and cut into 12mm pellets.

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Abstract

The invention discloses a nylon 66 impregnated ingredient and a method of producing long glass fiber reinforced nylon 66 aggregate by utilizing the ingredient. The nylon 66 impregnated ingredient consists of the following components in parts by weight: 100 parts of nylon 66, 2-8 parts of a compatilizer, 0.3-1.5 parts of coupling agent, 0.3-1.5 parts of impregnating compound and 0.5-2 parts of antioxidant. The impregnated ingredient disclosed by the invention is low in melt viscosity, good in wettability with glass fiber, good in thermal oxidation change resistance and suitable for producing the long glass fiber reinforced nylon 66 aggregate by melting an impregnated glass fiber tow at a high speed under a temperature lower than 320 DEG C in a wire guide roller-combined impregnation mould head.

Description

technical field [0001] The invention relates to the technical field of nylon 66 pellet production, in particular to a nylon 66 impregnating ingredient and a method for producing long glass fiber reinforced nylon 66 pellets. Background technique [0002] Nylon 66 (PA66) is a common thermoplastic engineering plastic. Hydrogen bonding can occur between the repeated amide groups in its molecular chain, and they are regularly arranged to form crystals, which endow nylon 66 products with good mechanical properties, oil and solvent resistance, self-lubrication and certain flame retardancy. However, nylon 66 has high water absorption, poor dimensional stability, and is not as strong as metal aluminum. This limits its application in some structural parts. The use of glass fiber reinforcement can greatly improve the mechanical properties and dimensional stability of nylon 66, make up for the above shortcomings, and expand the application of nylon 66 in the field of structural materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L51/06C08L99/00C08K5/00C08K5/5435C08K5/544C08J5/04
CPCC08L77/06C08J5/043C08J5/10C08J2377/06C08J2451/06C08K5/005C08K5/098C08K7/14C08L51/06C08J2451/00C08J2499/00C08K2201/003C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L99/00C08L51/006C08K13/04
Inventor 李建雄徐迎宾黄惠龙张胜炀刘安华张华
Owner SOUTH CHINA UNIV OF TECH
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