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Heat oxygen aging resistance high polymer material and preparation method and application thereof

A technology of high polymer and hydroperoxide, applied in the fields of chemical industry and materials, to achieve the effect of good thermal oxidation resistance aging, high antioxidative efficiency and obvious antioxidation effect

Inactive Publication Date: 2012-01-11
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the use of gallic acid and its esters as antioxidants in polymers has not been reported at home and abroad.

Method used

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  • Heat oxygen aging resistance high polymer material and preparation method and application thereof
  • Heat oxygen aging resistance high polymer material and preparation method and application thereof
  • Heat oxygen aging resistance high polymer material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Fully mix gallic acid with a mass percentage of 0.4% and polypropylene with a mass percentage of 99.6%, roll in an open plastic refining machine for 3min, and the temperature of the double rolls is 130±5°C, and make a sample piece with a thickness of 2mm .

[0025] The antioxidant B215 (by mass percentage is 33% tetrakis [methyl-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and mass percentage is 67% by mass percentage % of tris(2,4-di-tert-butylphenyl) phosphite) and 99.6% by mass of polypropylene were fully mixed, and a comparison sample with a thickness of 2 mm was prepared according to the above conditions.

[0026] The polypropylene is made into a blank sample sheet with a thickness of 2 mm according to the above conditions.

[0027] Differential scanning calorimeter (DSC) was used to measure the oxidation induction temperature of the test piece, the reference piece and the blank piece respectively. The oxidation induction test was carried...

Embodiment 2

[0032] Fully mix gallic acid with a mass percentage of 0.4% and linear low-density polyethylene with a mass percentage of 99.6%, roll in an open plastic refiner for 3min, and the temperature of the double rolls is 110±5°C to make a 2mm thick Sample samples.

[0033] Fully mix 0.4% by mass of antioxidant B215 and 99.6% by mass of linear low-density polyethylene, and make a comparison sample with a thickness of 2mm according to the above conditions.

[0034] The linear low density polyethylene is made into a blank sample with a thickness of 2 mm according to the above conditions.

[0035] Oxidation induction temperature test condition is the same as embodiment 1, and the results are as shown in table 2:

[0036] Table 2 Oxidation induction temperature of linear low density polyethylene (°C)

[0037]

[0038] It can be seen from Table 2 that compared with the blank sample, gallic acid has a better antioxidant effect on linear low-density polyethylene, which greatly increases...

Embodiment 3

[0040] Fully mix 0.4% n-butyl gallate and 99.6% high-density polyethylene, roll in an open plastic mill for 3 minutes, and the temperature of the double rolls is 110±5°C to make a thickness It is a sample piece of 2mm.

[0041] Fully mix 0.4% by mass of antioxidant B215 and 99.6% by mass of high-density polyethylene, and make a comparison sample with a thickness of 2mm according to the above conditions.

[0042] High-density polyethylene was made into a blank sample with a thickness of 2mm according to the above conditions.

[0043] Oxidation induction temperature test condition is the same as embodiment 1, and the results are as shown in table 3:

[0044] Table 3 Oxidation Induction Temperature of HDPE (°C)

[0045]

[0046] It can be seen from Table 3 that compared with the blank sample, n-butanol gallate has a better antioxidant effect on HDPE, which greatly increases the oxidation induction temperature of HDPE, and its antioxidant effect is much better than that of th...

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Abstract

The invention discloses a heat oxygen aging resistance high polymer material and a preparation method and an application thereof; the high polymer material adopts gallic acid and / or gallic acid ester as antioxidant and the dosages are 0.005%-10.00% of high polymer material. Gallic acid and gallic acid ester belong to polyhydrophenol compound and have high antioxidation rate in polymer, non-toxic and environmentally friend; the gallic acid and gallic acid ester have good thermal stability, can satisfy the processing conditions of various high polymer materials and have obvious antioxidant effect on high polymer.

Description

technical field [0001] The invention belongs to the fields of chemical industry and materials, and in particular relates to a preparation method and application of a heat-resistant and aging-resistant high polymer material using gallic acid and gallate esterified products as antioxidants. Background technique [0002] Phenolic antioxidants can capture peroxy radicals and are the most widely used antioxidants in the polymer industry. It can inhibit the oxidative and thermal degradation of many organic compounds and their polymers. At present, it has been widely used in polyolefin, synthetic rubber, polyester, coating, lubricating oil, etc. It has the advantages of good compatibility, good anti-oxidation effect, extraction resistance, heat resistance, etc. The combination of oxygen agents has a synergistic effect. [0003] Gallic acid and its esters belong to phenolic compounds, and its application research mainly focuses on the application of food industry, medicine and hea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L101/00C08K5/138C08K5/134C08L47/00C08L25/10C08L23/06C08L23/12C08L25/06C08L23/08C08L55/02C08L53/02
Inventor 陈鸣才朱林华陈嘉许林利连肖南许凯
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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