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Coating raw material composition, ductile iron pipe and preparation method thereof

A raw material composition, ductile iron pipe technology, applied in mechanical equipment, pipeline protection, pipeline anti-corrosion / anti-rust protection and other directions, can solve the problems of poor mechanical properties, anti-corrosion and thickness, narrow application range, low efficiency, etc. Low mechanical properties and the effect of improving anti-corrosion properties

Active Publication Date: 2019-08-30
SAINT GOBAIN PIPELINE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the problems of short anti-corrosion timeliness and narrow application range of anti-corrosion coatings for ductile iron pipes in the prior art, or poor mechanical properties and anti-corrosion properties related to thickness, or complicated production process, low efficiency and low cost. High defect, provide a kind of coating material composition, ductile iron pipe and preparation method thereof

Method used

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  • Coating raw material composition, ductile iron pipe and preparation method thereof
  • Coating raw material composition, ductile iron pipe and preparation method thereof
  • Coating raw material composition, ductile iron pipe and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1-2 and comparative example 1-3

[0045] 1, each raw material source among the embodiment 1-2 is as follows:

[0046] Ductile iron pipe preform: purchased from Saint-Gobain Piping Systems Co., Ltd.;

[0047] Emulsion: Styrene Acrylic Polymer Emulsion, PS 608;

[0048] Fiber: reticulated polypropylene fiber;

[0049] Superplasticizer: PCA-I polycarboxylate water reducer;

[0050] Stabilizer: hydroxypropyl methylcellulose P3125, Brookfield viscosity 30000mpa.s;

[0051] Retarder: HBO 3 .

[0052] 2. The ingredients (parts by weight) of the coating material compositions of Examples 1-2 and Comparative Examples 1-3 are shown in the table below.

[0053]

[0054] 3. Example 1-2, Comparative Example 1-3 Coating raw material composition is applied to the experiment of preparing ductile iron pipe

[0055] Combining the dosage of each component in the above table, the preparation method of the ductile iron pipe includes the following steps:

[0056] (1) Add material 2 to material 1, stir for 3 minutes until...

Embodiment 3-8

[0072] Each composition content (parts by weight) of embodiment 3-8 is as follows:

[0073]

Embodiment 3

[0074] Embodiment 3 stabilizer hydroxypropyl methylcellulose, Brookfield viscosity 38000mpa.s;

[0075] All the other unspecified conditions of embodiment 3-5 and 8 have no substantial difference with embodiment 1;

[0076] The conditions of applying Examples 3-5 and 8 to the preparation of ductile iron pipes are not substantially different from those of Example 1. After testing, the ductile iron pipe products all meet the requirements of the pull-out strength and impact test in the EN 15542-2008 standard.

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Abstract

The invention discloses a coating raw material composition, a nodular cast iron pipe and a preparation method therefor. The coating raw material composition comprises the following components in parts by weight: 10-300 parts of portland blast furnace slag cement, 10-500 parts of sand, 10-100 parts of water and 0.01-1 part of a stabilizer, wherein the stabilizer is cellulose. The nodular cast iron pipe comprises a nodular cast iron pipe preform and an outer coating arranged on the outer wall of the nodular cast iron pipe preform, and the outer coating is prepared from the coating raw material composition. The preparation method of the nodular cast iron pipe is simple in technology, high in production efficiency and low in cost; and the product is high in corrosion resistance and high in mechanical performance.

Description

technical field [0001] The invention relates to a coating raw material composition, a ductile iron pipe and a preparation method thereof. Background technique [0002] For the anticorrosion of buried pipelines, petroleum asphalt, epoxy coal tar pitch or adhesive tapes were initially used in the prior art. With the development of technology, some solvent-based heavy-duty anticorrosion coatings have been gradually developed. However, these anti-corrosion materials generally have high cost, strict construction requirements, and unsatisfactory anti-corrosion performance (Technical Development of Heavy-Duty Anti-corrosion Coatings for Buried Pipelines, Modern Paints and Coatings, Gu Yuxin, etc., Volume 13, No. 3, 2010, P19 -twenty one). [0003] Among the pipes used for buried pipelines, ductile iron pipes are representative. [0004] At present, the anticorrosion coating used for ductile iron pipes has a combination of ordinary metal coating and organic coating, specifically, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/08F16L58/06C04B111/20
Inventor 蔡道林陈湘湘陈锐
Owner SAINT GOBAIN PIPELINE SYST
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