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Thermo-oxidative ageing resistance black filling polypropylene composite material and preparation method thereof

A technology of composite material and polypropylene, which is applied in the field of anti-thermal oxygen aging black filled PP composite material and its preparation, can solve the problems of reducing the effective antioxidant and reducing the heat-resistant aging life of the material, so as to increase the solubility and improve the heat resistance. Effects of Oxygen Aging and Heat Aging Resistance Improvement

Active Publication Date: 2011-04-13
KINGFA SCI & TECH CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If fillers such as talcum powder are added to polypropylene, the heat-resistant aging life of the material will often be significantly reduced. This is because talc powder is easy to absorb antioxidants, thereby reducing the effective antioxidants.
Therefore, it is difficult to make the filled PP system have ideal thermal and oxidative aging resistance by using the traditional antioxidant system

Method used

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  • Thermo-oxidative ageing resistance black filling polypropylene composite material and preparation method thereof
  • Thermo-oxidative ageing resistance black filling polypropylene composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] A thermal-oxidative aging-resistant black filled PP composite material, which is composed of the following raw materials in weight percent: polypropylene (brand: M1200HS) 50%; talcum powder 40%; ethylene-hexene copolymer 5%; acid absorber 1.5% %; compound antioxidant 1.5%; processing aid 0.6%; carbon black 0.6%; white mineral oil 0.8%.

[0032] The acid absorbing agent is DHT-4A hydrotalcite. The composite antioxidant is preferably A+B type, wherein A is 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-s-triazine-2,4,6 -(1H,3H,5H)triketone 1.0%, B is tris(2,4-di-tert-butylphenyl)phenylphosphite 0.3% and bis(2.4-di-tert-butylphenyl)pentaerythritol diphosphite Esters 0.2% composition. The processing aid is composed of 0.3% of ethylene bisstearamide and 0.3% of A-C540A (Shenzhen Qinling Import and Export Trade Co., Ltd.). Described carbon black is 50L (German Degussa Company).

[0033] The specific steps of the preparation method are as follows: firstly add polypropylene,...

Embodiment 2

[0036] A thermal-oxidative aging-resistant black filled PP composite material is composed of the following raw materials in weight percent: polypropylene (brand: M800HS) 75%; calcium carbonate 10%; ethylene-octene copolymer 12%; acid absorber 0.5% %; compound antioxidant 1.2%; processing aid 0.5%; carbon black 0.6%; white mineral oil 0.2%.

[0037] The acid absorbing agent is zinc oxide. Described composite antioxidant is preferably A+B type, wherein, A is 0.8% of tetrafunctional glycidylamine epoxy resin, and B is two (2.4-di-tert-butylphenyl) pentaerythritol diphosphite 0.2% and Di(octadecyl)thiodipropionate 0.2% composition. The processing aid is composed of 0.3% of ethylene bis stearamide and 0.2% of polyethylene wax. Described carbon black is M717 (U.S. Cabot Company).

[0038] The steps of the preparation method are as follows: firstly add polypropylene, elastomer, white mineral oil, acid absorbing agent, composite antioxidant, processing aid and carbon black into a h...

Embodiment 3

[0041]A thermal and oxidative aging-resistant black filled PP composite material, which is composed of the following raw materials in weight percentage: polypropylene (grade: HJ4045) 65%; filler 16%; ethylene-propylene-octene terpolymer 15%; Acid absorbent 1.0%; composite antioxidant 1.4%; processing aid 0.6%; carbon black 0.6%; white mineral oil 0.4%.

[0042] The filler is 10% calcium carbonate and 6% barium sulfate.

[0043] The acid absorbing agent is hydrocalumite. The composite antioxidant is preferably A+B type, wherein A is 1.0% of tetrafunctional glycidylamine epoxy resin, B is 0.2% of di(octadecyl)thiodipropionate and bis(2.4-di 0.2% composition of tert-butylphenyl) pentaerythritol diphosphite. The processing aid consists of 0.3% ethylene bis stearamide and 0.3% stearic acid. Described carbon black is N472 (Jin Qiushi (Tianjin) Chemical Co., Ltd.).

[0044] The steps of the preparation method are as follows: firstly add polypropylene, elastomer, white mineral oil...

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Abstract

The invention discloses a thermo-oxidative ageing resistance black filling polypropylene composite material and a preparation method thereof. The composite material consists of the following components in percentage by weight: 50 to 75 percent of polypropylene, 10 to 40 percent of filling, 0 to 15 percent of an elastomer, 0.5 to 2 percent of an acid acceptor, 0.7 to 1.5 percent of composite antioxidant, 0.2 to 0.6 percent of a processing aid, 0.4 to 0.8 percent of carbon black, and 0.2 to 0.8 percent of paraffin oil. In the composite material, the acid acceptor is added to adsorb acid substances on the carbon black surface, and the antioxidant containing a plurality of reactive functional groups is also added, so that the dissolubility of the antioxidant in the system is increased, the oxidation resistance of the antioxidant cannot be easily weakened by the carbon black, and the thermal-oxidative ageing resistance of a black high filling polypropylene system can be effectively improved. The acid acceptor in the polypropylene resin can eliminate halogen in the resin and the residual catalyst in the resin to prevent the halogen or the catalyst from reacting with the resin to generate gel, and can effectively prevent the halogen or the catalyst from corroding the equipment. The acid acceptor can effectively adsorb the acid substances of the PP filling system and impurities on the carbon black surface so as to improve the thermo-oxidative ageing resistance of the system.

Description

technical field [0001] The invention relates to the technical field of PP modification, in particular to a heat-oxidative aging-resistant black filled PP composite material and a preparation method thereof. Background technique [0002] There are tertiary carbon atoms in the main chain of polypropylene (PP), which are prone to chemical changes under the action of external factors such as heat, oxygen, and ultraviolet rays. Free radicals are formed, and these free radicals further cause the entire macromolecule to be cracked, branched and crosslinked, making PP lose the characteristics of polymer materials and its performance. Therefore, many products have put forward long-term heat-resistant requirements for polypropylene materials. Generally, the thermal aging resistance of PP materials is improved by compounding primary and secondary antioxidants. Phenolic antioxidants are the most commonly used primary antioxidants. Phosphate and thioester antioxidants are two commonly u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/04C08K5/526C08K5/17C08K5/36C08K5/098C08K3/22C08K5/524B29B9/06B29C47/92B29C48/92
Inventor 王灿耀黄达罗忠富李永华陈瑶杨波
Owner KINGFA SCI & TECH CO LTD
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