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Uvioresistant polypropylene composition and preparation method thereof

A polypropylene composition and anti-ultraviolet technology, which is applied in the field of polymer materials, can solve the problems of rare optical stability, etc., and achieve the effects of reducing ultraviolet transmission, delaying product aging, and improving strength and rigidity

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few reports in the current literature on the use of nanowires to improve the optical stability of PP.

Method used

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  • Uvioresistant polypropylene composition and preparation method thereof
  • Uvioresistant polypropylene composition and preparation method thereof
  • Uvioresistant polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The surface modification agent silane coupling agent is used to modify the surface of the nanowires, wherein the amount of the surface modifier is 5% of the total amount of the nanowires. The surface modification is that the surface modifier fully mixes the nanowires.

[0020]

[0021] Add the above components into a high-speed mixer, mix for 3 minutes, and then use a twin-screw extruder to melt and granulate at a temperature of 180°C-240°C to obtain an anti-ultraviolet polypropylene material.

Embodiment 2

[0032] The nanowires are surface modified by using a surface modifier silane coupling agent, wherein the amount of the surface modifier is 3% of the total amount of the nanowires.

[0033]

[0034] Add the above components into a high-speed mixer, mix for 3 minutes, and then use a twin-screw extruder to melt and granulate at a temperature of 180°C-240°C to obtain an anti-ultraviolet polypropylene material.

Embodiment 3

[0045] The surface modification agent silane coupling agent is used to modify the surface of the nanowires, wherein the amount of the surface modifier is 2% of the total amount of the nanowires.

[0046]

[0047] Add the above components into a high-speed mixer, mix for 3 minutes, and then use a twin-screw extruder to melt and granulate at a temperature of 180°C-240°C to obtain an anti-ultraviolet polypropylene material.

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Abstract

The invention provides an uvioresistant polypropylene composition, comprising the following components in parts by weight: 100 parts of polypropylene resin, 1-6 parts of surface-modified nanowires, 0.3-1.0 part of photostabilizer and 0.15-1.0 part of antioxidant. In the preparation method, the polypropylene resin, surface-modified nanowires, photostabilizer and antioxidant are added in a high-speed mixer to mix for 4+ / -2 minutes; and melting granulation is carried out at 180-240 DEG C by using a double-screw extruder to obtain the uvioresistant polypropylene material. After the uvioresistant polypropylene material is subject to accelerated ageing for 200 hours with an ultraviolet B (UVB) lamp, the tensile strength retention rate of the component resin (sample wafer thickness of 2mm) is more than 95%, e.g. a flexible freight bag has the advantages of better tensile strength, fracture strength and uvioresistant ageing property. Detection is carried out on the basis of an ASTM (American Society for Testing Material) G154 method, and after a sample is aged for 144 and 200 hours, the fracture strength retention rate of the sample can reach above 70%.

Description

1. Technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an anti-ultraviolet polypropylene composition. The composition has broad application prospects in the field of polypropylene packaging materials, and is especially suitable for outdoor applications requiring high anti-ultraviolet aging performance. Such as long-sunshine areas, plateau areas, and areas with high temperatures. 2. Background technology [0002] As one of the five general-purpose plastics, polypropylene (PP) has a very important application in the field of plastic packaging materials. Compared with traditional packaging materials, packaging materials made of PP have the characteristics of light weight, high strength, corrosion resistance, easy recycling, no pollution, easy cleaning, and good comprehensive performance, so they are widely used in salt, chemical fertilizers, food, Packaging of mineral sand, building materials, tents and other m...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L53/00C08K13/06C08K9/04C08K9/06C08K7/10C08K7/08
Inventor 陈枫何鹏许秋康
Owner CHINA PETROLEUM & CHEM CORP
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