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Water supply pipe composition and preparation method thereof

A technology of water supply pipes and compositions, applied in the direction of tubular objects, other household appliances, applications, etc., can solve the problems of poor quality stability, difficult to control the quality of pipe products, complicated technical processes, etc., and achieve improved compressive strength and good market application Foreground, the effect of simple operation

Active Publication Date: 2021-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, pipe production enterprises mainly increase their compressive strength by adding reinforcing agents, graft modification and steel wire reinforcement, but the technical process is complicated, the quality of pipe products is difficult to control, and the quality stability is poor

Method used

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  • Water supply pipe composition and preparation method thereof
  • Water supply pipe composition and preparation method thereof
  • Water supply pipe composition and preparation method thereof

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Experimental program
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Effect test

Embodiment 1-5

[0031] The proportioning components of the polyethylene composition used in the production of water supply pipes are shown in Table 1.

[0032] Density: According to GB / T 1033.2-2010, use D method, test after boiling for 30 minutes;

[0033] Melt mass flow rate (MFR): tested according to GB / T 3682-2000;

[0034] Weight-average molecular weight and its distribution: adopt gel permeation chromatography (GPC) method, chromatographic column is 2 in series, solvent and mobile phase are all 1,2,4-trichlorobenzene (containing 0.1% antioxidant 2,6- Dibutyl p-cresol), the column temperature is 150°C, dissolved for 4h, the flow rate is 1.0ml / min, and the narrow distribution polystyrene standard sample is used for universal calibration.

[0035] Both the polyethylene resin A and the polyethylene resin B are self-synthesized, and the processes used are all known to those skilled in the art and can be realized.

[0036] The polyethylene resin composition of table 1 embodiment 1-5 water s...

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Abstract

The invention relates to a water supply pipe composition and a preparation method thereof, and belongs to the technical field of water supply pipe preparation. The water supply pipe composition is prepared from the following raw materials in parts by weight: 90-95 parts of polyethylene resin A, 5-10 parts of polyethylene resin B and 4-6 parts of auxiliary master batch, wherein the polyethylene resin A is a copolymer of ethylene and 1-butene or a copolymer of ethylene and 1-hexene, the weight-average molecular weight Mw is 200000-230000, and the molecular weight distribution D is 18-23; the polyethylene resin B is a copolymer of ethylene and 1-hexene, the weight-average molecular weight Mw of the polyethylene resin B is 120000-140000, and the molecular weight distribution D of the polyethylene resin B is 2.9-3.3. The water supply pipe composition provided by the invention has excellent compressive strength, tensile strength, thermal stability and the like; the invention also provides a simple and feasible preparation method.

Description

technical field [0001] The invention relates to a water supply pipe composition and a preparation method thereof, belonging to the technical field of water supply pipe preparation. Background technique [0002] Polyethylene (PE) water supply pipe is a kind of water supply pipe produced by extrusion molding process with polyethylene resin as the main raw material, adding necessary antioxidants, ultraviolet absorbers and other auxiliary agents. This kind of pipe has the advantages of corrosion resistance, good hydraulic conditions for water delivery, light weight, long service life (durable for 50 years), good flexibility, good impact resistance and earthquake resistance, and the construction connection is simple, convenient and quick. Therefore, its application in water supply projects has grown rapidly in recent years, and it has become the main material for water supply projects. [0003] In recent years, as the requirements for the safety factor of water supply pipes have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08K5/134C08K5/526C08K3/04C08J3/22B29C48/09B29C71/02B29L23/00
Inventor 王群涛郭锐苑东兴高凌雁王日辉许平李延亮
Owner CHINA PETROLEUM & CHEM CORP
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