Long glass fiber enhanced polypropylene composite material and preparation method thereof

A composite material and long glass fiber technology, which is applied in the field of long glass fiber reinforced polypropylene composite materials and its preparation, can solve problems such as damage and lack of strength, achieve reduced length breakage, reasonable formula, and improved wear resistance and impact resistance effect

Inactive Publication Date: 2018-10-19
JURONG BASTEP COMPOSITE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, glass fibers may be damaged during injection molding and not obtain the required strength

Method used

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  • Long glass fiber enhanced polypropylene composite material and preparation method thereof
  • Long glass fiber enhanced polypropylene composite material and preparation method thereof
  • Long glass fiber enhanced polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1: Mix and stir 14 parts of polyethylene terephthalate resin, 5 parts of superfine calcium carbonate and 7 parts of coupling agent, raise the temperature to 70°C and keep it warm, add 85 parts of low-viscosity polypropylene resin and stir for 25 minutes, Then melt and extrude at 210°C through a plastic extruder, and obtain a modified polypropylene resin masterbatch after cooling and pelletizing; meanwhile, take 8 parts of nano-titanium dioxide, 42 parts of phenol, 27 parts of ethanol, 12 parts of triethanolamine and Mix 6 parts of oxalic acid to obtain the immersion liquid, mix the alkali-free glass fiber with the immersion liquid at a mass ratio of 5:10, and process the immersion liquid for 1.5 hours to obtain the modified long glass fiber;

[0028] Step 2: The modified polypropylene resin masterbatch obtained in step 1 is mixed with 6 parts of UF resin crosslinking agent, 3 parts of polyethylene wax, 4 parts of aromatic amine, 2 parts of phosphite and 3 parts of m...

Embodiment 2

[0031] Step 1: Mix and stir 10 parts of polyethylene terephthalate resin, 3 parts of superfine calcium carbonate and 5 parts of coupling agent, raise the temperature to 50°C and keep it warm, add 70 parts of low-viscosity polypropylene resin and stir for 20 minutes, Then melt and extrude through a plastic extruder at 150°C, and obtain a modified polypropylene resin masterbatch after cooling and pelletizing; meanwhile, take 5 parts of nano-titanium dioxide, 30 parts of phenol, 20 parts of ethanol, 5 parts of triethanolamine and 5 parts of oxalic acid were mixed to obtain the immersion solution, the alkali-free glass fiber was mixed with the immersion solution in a mass ratio of 6:10, and the immersion solution was treated for 1 hour to obtain the modified long glass fiber;

[0032] Step 2: The modified polypropylene resin masterbatch obtained in step 1 is mixed with 4 parts of UF resin crosslinking agent, 2 parts of polyethylene wax, 1 part of aromatic amine, 1 part of phosphite...

Embodiment 3

[0035] Step 1: Mix and stir 20 parts of polyethylene terephthalate resin, 6 parts of superfine calcium carbonate and 8 parts of coupling agent, raise the temperature to 80°C and keep it warm, add 90 parts of low-viscosity polypropylene resin and stir for 30 minutes, Then melt and extrude at 220°C through a plastic extruder, and obtain a modified polypropylene resin masterbatch after cooling and pelletizing; meanwhile, take 10 parts of nano-titanium dioxide, 50 parts of phenol, 30 parts of ethanol, 15 parts of triethanolamine and 8 parts of oxalic acid were mixed to obtain the immersion solution, the alkali-free glass fiber was mixed with the immersion solution in a mass ratio of 4:10, and the immersion solution was treated for 2 hours to obtain a modified long glass fiber;

[0036] Step 2: The modified polypropylene resin masterbatch obtained in step 1 is mixed with 10 parts of UF resin crosslinking agent, 5 parts of polyethylene wax, 5 parts of hindered phenol, 3 parts of thio...

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Abstract

The invention discloses a long glass fiber enhanced polypropylene composite material and a preparation method thereof. The composite material comprises following components in parts by weight: 70 to 90 parts of low viscosity polypropylene resin, 10 to 20 parts of polyethylene glycol terephthalate resin, 3 to 6 parts of superfine calcium carbonate, 5 to 8 parts of coupling agent, 30 to 50 parts ofmodified long glass fiber, 4 to 10 parts of UF resin crosslinking agent, 2 to 5 parts of polyethylene wax, 1 to 5 parts of main antioxidant, 1 to 3 parts of auxiliary antioxidant, and 2 to 4 parts offire retardant. The composite material is prepared by modifying polypropylene resin and long glass fibers individually and then compounding modified polypropylene resin and modified long glass fibers.The formula is reasonable, the composite material is green and environmentally friendly, and the compatibility of all components is good. The obtained composite material has excellent properties, thetensile strength is greater than 150 MPa, and the antioxidant performance and fireproof performance are excellent.

Description

technical field [0001] The invention relates to a long glass fiber-reinforced polypropylene composite material and a preparation method thereof, which is suitable for manufacturing auto parts, electrical parts, etc., and belongs to the technical field of polymer material processing. Background technique [0002] Long Glass Fiber Reinforced Polypropylene (LGFPP) is one of the new varieties that has attracted much attention. As an automotive module carrier material, this material can not only effectively improve the rigidity, impact strength, creep resistance and dimensional stability of the product, but also make complex automotive module products. Due to the requirement of strength, the previous module carrier is usually made of polypropylene-based glass fiber mat reinforced thermoplastic (GMT) or metal sheet by stamping. Integration of multiple parts is difficult due to press molding. In order to improve rigidity and strength and to obtain a thin molding thickness, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L67/02C08K13/06C08K9/04C08K9/02C08K7/14C08K3/26C08K3/22C08J5/08
CPCC08J5/08C08J2323/12C08J2467/02C08K7/14C08K9/02C08K9/04C08K13/06C08K2003/2224C08K2003/2227C08K2003/265
Inventor 陆志宏
Owner JURONG BASTEP COMPOSITE MATERIALS
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