Modified nano zinc oxide-glass fiber-polypropylene composite material and preparation method thereof

A nano-zinc oxide and glass fiber technology, applied in the field of materials, can solve problems such as unsatisfactory results and lack of cohesion, and achieve the effects of increasing roughness and surface area, enhancing interfacial adhesion, and improving mechanical properties

Inactive Publication Date: 2018-02-09
GAOYOU INST CO LTD DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polypropylene is a non-polar macromolecule, and it is difficult to directly connect with glass fiber. It needs to introduce polar functional groups. The method often used in commercial production is to add unsaturated carboxylic acid or its anhydride modified polypropylene to improve the interface with glass fiber. The interface connection of graft-modified polypropylene and non-grafted modified polypropylene is used as the impregnation base material. Polypropylene needs to use polypropylene resin with ultra-high melting index to meet the requirements of good glass fiber impregnation
However, even after the glass fiber is modified with a silane coupling agent, the result is still not ideal, because PP is still inert at this time, and it does not have the same bonding force as nylon, saturated polyester and glass fiber.

Method used

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  • Modified nano zinc oxide-glass fiber-polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A modified nano-zinc oxide-glass fiber-polypropylene composite material, including A and B two components, in parts by weight, A component includes 60 parts of medium-melt index homopolypropylene with a melt index of 15g / 10min, 0.15 parts of antioxidant 1010, 0.15 parts of polyethylene wax; component B includes 15 parts of alkali-free glass fibers with a diameter of 8 μm, and 1.5 parts of modified nano-zinc oxide. The modified nano-zinc oxide is made of silane coupling agent KH-570 chemically modifies the surface of nano zinc oxide.

[0023] The preparation includes the following steps:

[0024] (1) Disperse the modified nano-zinc oxide in distilled water according to the proportion of 0.01g / mL, and ultrasonically oscillate for 10 minutes to form a stable modified nano-zinc oxide suspension, which is ready for use;

[0025] (2) Add component A into the mixer to make it fully mixed evenly, add the mixture obtained above into the twin-screw extruder, and the temperature ...

Embodiment 2

[0029]A modified nano-zinc oxide-glass fiber-polypropylene composite material, including A and B two components, according to parts by weight, A component includes 70 parts of medium-melt index homopolypropylene with a melt index of 15g / 10min, 0.2 parts of antioxidant 1010, 0.2 parts of polyethylene wax; component B includes 30 parts of alkali-free glass fibers with a diameter of 8 μm, and 2.5 parts of modified nano-zinc oxide. The modified nano-zinc oxide uses silane coupling agent KH-570 chemically modifies the surface of nano zinc oxide.

[0030] The preparation includes the following steps:

[0031] (1) Disperse the modified nano-zinc oxide in distilled water according to the proportion of 0.01g / mL, and ultrasonically oscillate for 10 minutes to form a stable modified nano-zinc oxide suspension, which is ready for use;

[0032] (2) Add component A into the mixer to make it fully mixed evenly, add the mixture obtained above into the twin-screw extruder, and the temperature...

Embodiment 3

[0036] A modified nano-zinc oxide-glass fiber-polypropylene composite material, including two components A and B, in parts by weight, the A component includes 65 parts of medium-melt index homopolypropylene with a melt index of 15g / 10min, 0.15 parts of antioxidant 1010, 0.15 parts of polyethylene wax; component B includes 17 parts of alkali-free glass fibers with a diameter of 8 μm, and 1 part of modified nano-zinc oxide. The modified nano-zinc oxide uses silane coupling agent KH-570 chemically modifies the surface of nano zinc oxide.

[0037] The preparation includes the following steps:

[0038] (1) Disperse the modified nano-zinc oxide in distilled water according to the proportion of 0.01g / mL, and ultrasonically oscillate for 10 minutes to form a stable modified nano-zinc oxide suspension, which is ready for use;

[0039] (2) Add component A into the mixer to make it fully mixed evenly, add the mixture obtained above into the twin-screw extruder, and the temperature contr...

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Abstract

The invention belongs to the field of materials, relates to a novel polypropylene material, and in particular relates to a modified nano zinc oxide-glass fiber-polypropylene composite material and a preparation method thereof, the modified nano zinc oxide-glass fiber-polypropylene composite material comprises A and B components, the A component comprises 45 to 75 parts by weight of polypropylene,0.15 to 0.2 part by weight of an antioxidant and 0.15 to 0.2 part of a lubricant; the B component includes 10 to 30 parts of glass fiber and 1-3 parts of modified nano-zinc oxide, and the modified nano zinc oxide is obtained by use of a silane coupling agent for chemical modification of the surface of nano zinc oxide. The nano zinc oxide is added to improve the mechanical properties of the composite material, the preparation process is simple and easy, the needs of the combination of the modified nano zinc oxide, the glass fiber and the polypropylene can be met without adding of a compatibilizer.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a novel polypropylene material, in particular to a modified nano zinc oxide-glass fiber-polypropylene composite material and a preparation method. Background technique [0002] Polypropylene (pp) has developed rapidly since its industrialization in 1957. It is a general-purpose plastic with relatively large output and consumption. Polypropylene has good processing properties. It has excellent corrosion resistance and electrical insulation, and its mechanical properties, including tensile strength, compressive strength, and hardness, are better than low-pressure polyethylene. And it also has outstanding rigidity and folding resistance, and it is cheap. The shortcoming of polypropylene that needs to be overcome urgently is: the molding shrinkage rate is relatively large. Easy to be brittle at low temperature, insufficient wear resistance, low heat distortion temperature, poor light resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08K9/06C08K3/22C08K7/14
CPCC08K2003/2296C08K2201/003C08K2201/011C08L23/12C08L23/06C08K9/06C08K3/22C08K7/14
Inventor 李强
Owner GAOYOU INST CO LTD DALIAN UNIV OF TECH
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