Weather-resistant polystyrene material

A technology of weather-resistant polypropylene and polypropylene materials, which is applied in the field of polypropylene material production, can solve the problems of loss of basic physical properties and easy aging, and achieve the effects of improving weather resistance and anti-oxidation performance, low cost, and easy-to-obtain materials

Inactive Publication Date: 2018-06-12
青岛绿谷生物科技有限公司
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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-resistant polystyrene material
  • Weather-resistant polystyrene material
  • Weather-resistant polystyrene material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Take each raw material respectively by 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 (copolymer of ethylene-octene): 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; wherein, 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 that the w...

Embodiment 2

[0034] (1) Take each raw material respectively by weight ratio as follows:

[0035] Polypropylene raw material: 62

[0036] Titanium dioxide: 2.1

[0037] Inorganic filler (calcium carbonate): 175

[0038] Dispersant lubricant (TAS-2A): 0.5

[0039] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 8.6

[0040] Light stabilizer: 8.6

[0041] Antioxidant (copolymer of ethylene-octene): 11.5

[0042] Colorant: 3.0

[0043] (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; wherein, 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.

[0044] Experimental results:

[0045]

[0046] The above test results show th...

Embodiment 3

[0048] (1) Take each raw material respectively by weight ratio as follows:

[0049] Polypropylene raw material: 68

[0050] Titanium dioxide: 2.5

[0051] Inorganic filler (calcium carbonate): 180

[0052] Dispersant lubricant (TAS-2A): 0.5

[0053] UV absorber (2-hydroxy-4-n-octyloxybenzophenone): 7.5

[0054] Light Stabilizer: 7

[0055] Antioxidant (copolymer of ethylene-octene): 13

[0056] Colorants: 2

[0057] (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; wherein, 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.

[0058] Experimental results:

[0059]

[0060] The above test results show that th...

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Abstract

The invention belongs to the technical field of production of polystyrene materials, and aims at overcoming the original shortages of polystyrene and producing products meeting social demands. Polystyrene resin which is one of the commonest high polymer materials and is a hemi-crystalline thermoplastic plastic and is high in impact resistance, high in mechanical property, resistant to various organic solvents, resistant to acid-alkali corrosion, and widely applicable to the industry; a polystyrene chain contains a large number of unstable tertiary carbon atoms, and hydrogen on the tertiary carbon atoms can be easily removed with little energy in the presence of oxygen to obtain tertiary carbon free groups; the tertiary carbon free groups are active and lead to various reactions of a molecular chain, including chain propagation and chain degrading, thus the original performances of PP is lost, and as a result, the PP material is aged; PP is extremely easily aged, and the basic physicalperformances are completely lost in case that the PP is placed outdoor for one month without adding an antioxidant. To solve the abovementioned problem, the ageing resistance is improved in case of outdoor use.

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 activ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08K13/02C08K3/22C08K3/26C08K5/132C08K5/18B29C47/92B29C48/92
CPCC08L23/12B29C48/92B29C2948/92514B29C2948/92704C08L2201/08C08L23/0815C08K13/02C08K2003/2241C08K2003/265C08K5/132
Inventor 丁磊
Owner 青岛绿谷生物科技有限公司
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