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Low-noise water drain pipe

A drainage pipe, low noise technology, applied in the field of new building materials, to achieve significant sound insulation effect, convenient construction, and good chemical corrosion resistance

Inactive Publication Date: 2004-11-24
BEI JING NEW BUILDING MATERIALGRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no domestic manufacturer of such pipes

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: The low-noise drainage pipe has a three-layer structure, the inner and outer layers are polypropylene felt, the middle layer is polymer elastomer and expanded sound-absorbing mineral filler, and the material ratio of the polypropylene felt is:

[0032] Block copolymer polypropylene: 77.42%

[0033] Calcium carbonate: 19.36%

[0034] Octabromoether: 0.1%,

[0035] Titanium dioxide: 2.9%

[0036] Calcium stearate: 0.19%

[0037] Phosphite: 0.03%

Embodiment 2

[0038] Embodiment 2: The low-noise drainage pipe has a three-layer structure, the inner and outer layers are polypropylene felt, the middle layer is polymer elastomer and expansion sound-absorbing mineral filler, and the material ratio of the polypropylene felt is:

[0039] Block copolymer polypropylene: 49.6%

[0040] Barium sulfate: 49.6%

[0041] Octabromoether: 0.1%,

[0042] Ultramarine: 0.2%

[0043] Calcium Stearate: 0.5%

[0044] Phosphite: 0%

Embodiment 3

[0045] Embodiment 3: The low-noise drainage pipe has a three-layer structure, the inner and outer layers are polypropylene felt, the middle layer is polymer elastomer and expanded sound-absorbing mineral filler, and the material ratio of the polypropylene felt is:

[0046] Block copolymerized polypropylene: 17.34%

[0047] Silica: 77.06%

[0048] Octabromoether: 2.89%,

[0049] Titanium dioxide: 1.93%

[0050] Calcium stearate: 0.77%

[0051] Phosphite: 0.01%

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Abstract

A low-noise drainage pipe is composed of internal and external polypropene felt layers and central filler layer prepared from high-molecular elastomer and expandable sound-insulating minerals. Said felt layer is prepared from block copolypropene, filler, antioxidizing agent, pigment particles, lubricant, and flame-retarding agent. Its advantages are smooth inner surface, high resistance to high temp (90-95 deg.C) and chemical corrosion, and high sound isolating effect.

Description

Technical field: [0001] The invention belongs to the field of new building materials, in particular to drainage pipes directly applied to high-end apartments, hotels, hospitals and public buildings. Background technique: [0002] The earliest buried drainage pipes used in history were made of stones or bricks. Later, concrete or reinforced concrete drainage pipes were widely used, and metal drainage pipes were also used. However, the corrosion and rust of metal pipes pollute the water quality, and the service life of metal pipes is relatively short. In this case, it was not until the 1970s that plastic buried drainage pipes were gradually applied. Compared with traditional metal pipes, plastic pipes have the advantages of light weight, corrosion resistance, small water flow resistance, convenient transportation and installation, and long service life. However, in the process of use, it was found that the noise of PVC drainage pipes had an impact on people's lives. In resp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E03F3/04
Inventor 王志伟张捷平温亚东周小英
Owner BEI JING NEW BUILDING MATERIALGRP