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Special high impact resistant polypropylene pipe material

A special material for pipe materials, high impact resistance technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of nucleating agent agglomeration, dispersion and unevenness, and achieve improved impact strength, high retention rate, comprehensive Excellent performance

Inactive Publication Date: 2014-10-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a special material for high-impact polypropylene pipes with a modified β crystal nucleating agent as one of the components, so as to overcome the nucleating agent existing in the existing blending and melting method in polypropylene. The problem of agglomeration and uneven dispersion in the medium, thus improving the nucleation effect of the β-crystal nucleating agent in polypropylene and the conversion rate of the β-crystal form

Method used

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  • Special high impact resistant polypropylene pipe material
  • Special high impact resistant polypropylene pipe material
  • Special high impact resistant polypropylene pipe material

Examples

Experimental program
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Effect test

specific Embodiment 1

[0028] Use the surface modifier silane coupling agent to modify the surface of the β crystal nucleating agent 2,6-phthalic acid cyclohexanamide: add the β crystal nucleating agent into the reaction kettle, and then add a certain amount of silane coupling agent Coupling agent, under the condition of water bath temperature 60°C and magnetic stirring, after continuous reflux for 5 hours, filter, wash, and dry to obtain the β crystal nucleating agent; the amount of silane coupling agent is wt10 of the β crystal nucleating agent %.

[0029] 100 parts of polypropylene resin,

[0030] 0.125 parts of β crystal form nucleating agent after surface modification,

[0031] Antioxidant 1010 0.15 parts,

[0032] Antioxidant 168 0.15 parts,

[0033] Halogen absorbent calcium stearate 0.1 part;

[0034] The above-mentioned components are added into a high-speed mixer, mixed for 5 minutes, and then extruded and granulated by a twin-screw extruder at a temperature of 190°C to 230°C to obtain...

specific Embodiment 2

[0035] The surface modifier lanthanum oxide sol is used to modify the surface of the β crystal nucleating agent 2,6-phthalic acid cyclohexanamide: add the β crystal nucleating agent into the reaction kettle, and then add a certain amount of oxidizing agent Lanthanum sol, under the condition of a water bath temperature of 50 ° C and magnetic stirring, continuously reflux for 6 hours, filter, wash, and dry to obtain a β crystal nucleating agent; the amount of lanthanum oxide sol is 10% by weight of the β crystal nucleating agent .

[0036] 100 parts of polypropylene resin,

[0037] 0.15 parts of β crystal form nucleating agent after surface modification,

[0038] Antioxidant 1010 0.1 parts,

[0039] Antioxidant 168 0.1 part,

[0040] Halogen absorbent zinc stearate 0.1 part;

[0041] The above-mentioned components are added into a high-speed mixer, mixed for 5 minutes, and then extruded and granulated by a twin-screw extruder at a temperature of 190°C to 230°C to obtain spec...

specific Embodiment 3

[0042]Surface modification of the β-crystal nucleating agent N,N'-dicyclohexyl-2,6-naphthalenediamide was carried out with the surface modifier octadecyltrichlorosilane: firstly, the β-crystal nucleating agent was added to A certain amount of heptane, and magnetically stirred. Draw a certain amount of octadecyltrichlorosilane with a micro syringe, inject it into the suspension at one time under stirring, stir until the nucleating agent is evenly dispersed in the solution, and continue stirring for 20 minutes. After filtration, wash with acetone and alcohol several times to remove free self-assembled modifier molecules. The modified nucleating agent was vacuum-dried to finally obtain the sample. The amount of octadecyltrichlorosilane is 15% of the mass of the β crystal form nucleating agent, and the amount of heptane is 10 times the mass of the β crystal form nucleating agent.

[0043] 100 parts of polypropylene resin,

[0044] 0.15 parts of β crystal form nucleating agent a...

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Abstract

The invention relates to a special high impact resistant polypropylene pipe material, which comprises polypropylene resin, an antioxidant, a halogen absorbent, and a beta crystal form nucleating agent subjected to chemical surface modification. The special beta crystal form polypropylene pipe material is prepared by: mixing the polypropylene resin, the surface modified beta crystal form nucleating agent, the antioxidant and the halogen absorbent evenly, and carrying out extrusion granulation. The special polypropylene pipe material has greatly improved impact strength, especially the low temperature impact resistance, and at the same time, the tensile strength and the bending modulus retention rate are high, thus well achieving comprehensive balance of rigidity and toughness.

Description

technical field [0001] The invention relates to a special material for high-impact polypropylene pipes. Background technique [0002] Since the industrialization of plastic pipes, they have been widely used in various fields such as industrial and agricultural production, construction and life, and the field of pipes has gradually realized plasticization. Polypropylene (PP), as one of the five general-purpose plastics, occupies an important position in plastic pipes, because PP is light in weight, high in strength, insoluble in general solvents at room temperature, resistant to chemical corrosion, non-toxic, recyclable, and free of environmental pollution , so it has achieved great development in the field of new construction pipelines and industrial pipelines. However, polypropylene is a quasi-tough material with high notch sensitivity, poor impact performance at room temperature or low temperature, and low temperature resistance. Especially, the working temperature and wo...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08K13/06C08K9/06C08K9/04C08K9/02C08K5/20C08K5/134C08K5/524C08K5/098F16L9/12
CPCC08K13/06C08K5/098C08K5/20C08K9/02C08K9/04C08K9/06C08L2203/18C08L2205/242
Inventor 傅勇鲍光复徐振明姜志荣
Owner CHINA PETROLEUM & CHEM CORP
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