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Weather-proof polypropylene material

A weather-resistant polypropylene and polypropylene material technology, applied in the field of polypropylene material production, can solve the problems of loss of basic physical properties, easy aging, etc., and achieve the effects of improving weathering and anti-oxidation performance, low cost, and simple production method

Inactive Publication Date: 2014-01-15
QINGDAO YISHIBAO PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because PP is very easy to age, if no antioxidant is added, its basic physical properties will be completely lost after being outdoors for a month.

Method used

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  • Weather-proof polypropylene material
  • Weather-proof polypropylene material
  • Weather-proof polypropylene material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Weigh each raw material according to the weight ratio as follows:

[0021] Polypropylene raw material: 55

[0022] Titanium dioxide: 1.5

[0023] Inorganic filler (calcium carbonate): 130

[0024] Dispersant lubricant (TAS-2A): 0.4

[0025] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 5

[0026] Light Stabilizer: 5

[0027] Antioxidant (ethylene-octene copolymer): 8

[0028] Colorants: 2

[0029] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; among them, the twin-screw extruder The temperature of the first zone is 90-100°C, the second zone is 150-180°C, the third zone is 200-210°C, the fourth zone is 200-205°C; the fifth zone is 190-200°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0030] Experimental results:

[0031]

[0032] The above test results show tha...

Embodiment 2

[0035] (1) Weigh each raw material according to the weight ratio as follows:

[0036] Polypropylene raw material: 62

[0037] Titanium dioxide: 2.1

[0038] Inorganic filler (calcium carbonate): 175

[0039] Dispersant lubricant (TAS-2A): 0.5

[0040] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 8.6

[0041] Light stabilizer: 8.6

[0042] Antioxidant (ethylene-octene copolymer): 11.5

[0043] Colorant: 3.0

[0044] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; among them, the twin-screw extruder The temperature of the first zone is 90-100°C, the second zone is 150-180°C, the third zone is 200-210°C, the fourth zone is 200-205°C; the fifth zone is 190-200°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0045] Experimental results:

[0046]

[0047] The above test results s...

Embodiment 3

[0050] (1) Weigh each raw material according to the weight ratio as follows:

[0051] Polypropylene raw material: 68

[0052] Titanium dioxide: 2.5

[0053] Inorganic filler (calcium carbonate): 180

[0054] Dispersant lubricant (TAS-2A): 0.5

[0055] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 7.5

[0056] Light Stabilizer: 7

[0057] Antioxidant (ethylene-octene copolymer): 13

[0058] Colorants: 2

[0059] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; among them, the twin-screw extruder The temperature of the first zone is 90-100°C, the second zone is 150-180°C, the third zone is 200-210°C, the fourth zone is 200-205°C; the fifth zone is 190-200°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0060] Experimental results:

[0061]

[0062] The above test results show t...

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Abstract

The invention belongs to the technical field of polypropylene (PP) material production, and aims at improving the disadvantages of polypropylene and producing products accord with social demands. Polypropylene resin belongs to hemicrystalline thermoplastic plastic, possesses relatively high impact resistance and strong mechanical property, is capable of resisting multiple organic solvents and resisting acid / base corrosion, is widely applicable to industries, and belongs to one of common high-molecular materials. Because of a large amount of unstable tertiary carbon atoms existed in the polypropylene chain, in the presence of oxygen, only extremely small energy is needed for removing of hydrogen atoms of the tertiary carbon atoms and further for forming of tertiary carbon free radicals. The tertiary carbon free radicals are extremely active, and can cause generation of various reactions comprising chain propagation and chain degradation on the molecular chain, and thus the PP material loses original performances and is aged. PP is extremely easy to age, and the basic physical performances of PP are all lost if PP is placed outdoors without an added antioxidant for one month, and therefore if PP is applied outdoors, a method must be found for improving the aging resistance of PP.

Description

technical field [0001] The invention belongs to the technical field of polypropylene material production and aims to improve the original weather resistance of polypropylene. Produce products that meet social needs. Background technique [0002] Polypropylene, English name: Polypropylene, abbreviated name PP. Its chemical formula is: (C3H6)N. The structural formula is as follows: [0003] [0004] Currently, polypropylene resin is a semi-crystalline thermoplastic. It has high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid and alkali corrosion. It is widely used in industry and is one of the common polymer materials. Because there are a large number of unstable tertiary carbon atoms in the polypropylene chain, in the presence of oxygen, only a small amount of energy can be used to remove the hydrogen on the tertiary carbon atoms and become tertiary carbon free radicals. Tertiary carbon free radicals are very acti...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K13/02C08K3/22C08K5/132B29C47/92B29C48/92
CPCC08K2003/2241C08L23/12B29B9/06B29C48/92B29C2948/92514B29C2948/92561B29C2948/92704C08K3/22C08K5/18C08K13/02C08L2201/08C08L23/0815C08K2003/265C08K5/132
Inventor 王世字栾蓉
Owner QINGDAO YISHIBAO PLASTIC
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