Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

HDPE (high-density polyethylene) pipe and preparation method thereof

A technology for pipes and nano-calcium carbonate, which is applied in the field of polymers to achieve the effects of increasing tensile strength and elongation at break, enhancing tensile strength and elongation at break, and avoiding the decline in mechanical properties

Inactive Publication Date: 2018-05-18
CHANGSHA WUDAO IND DESIGN CO LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention adds modified nano-calcium carbonate and nano-calcium carbonate to make the composite material have better mechanical properties. Compared with HDPE double-wall corrugated pipe, it has better toughness, better hardness and stronger environmental stress cracking resistance. However, due to the addition of a large amount of inorganic fillers, there is still a lot of room for improvement in terms of tensile strength and elongation at break.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • HDPE (high-density polyethylene) pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The preparation method of above-mentioned HDPE pipe, comprises the following steps:

[0031] (1) Prepare modified nano-calcium carbonate: mix and heat the nano-calcium carbonate of 20-50 mass parts and the water of 50-80 mass parts, form the mixture of nano-calcium carbonate and water, then add to described nano-calcium carbonate and water The coupling agent that adds 5-12 mass parts in the mixture is modified, makes modified nano-calcium carbonate;

[0032] (2) Preparation of organosilane-modified linear low-density polyethylene: melt organosilane and linear low-density polyethylene with a mass ratio of 1:10, and extrude and granulate at 100-120°C;

[0033] (3) Mix organosilane-modified linear low-density polyethylene, modified nano-calcium carbonate, HDPE, nano-calcium carbonate and lubricant to make granular mixture;

[0034] (4) mixing and melting the granular mixture with p-hydroxybenzoic acid and dibutyltin dilaurate and extruding through a mold to form the embry...

Embodiment 1

[0038]A kind of HDPE pipe material, with mass parts as unit, comprises following raw material: Modified nano-calcium carbonate is 10 mass parts, and HDPE is 68 mass parts, and nano-calcium carbonate is 25 mass parts, and paraffin is 3 mass parts, p-hydroxybenzoic acid 6.8 parts by mass, organosilane-modified linear low density polyethylene 6.8 parts by mass, and dibutyltin dilaurate 0.34 parts by mass.

[0039] The preparation method of above-mentioned HDPE pipe, comprises the following steps:

[0040] (1) Preparation of modified nano-calcium carbonate: the modified nano-calcium carbonate is to mix 36 mass parts of nano-calcium carbonate with 70 mass parts of water and heat to form a mixture of nano-calcium carbonate and water, and then to the nano-calcium carbonate Prepared by adding 8 parts by mass of coupling agent to the mixture of calcium carbonate and water for modification;

[0041] (2) Preparation of organosilane-modified linear low-density polyethylene: melt organosi...

Embodiment 2

[0046] A kind of HDPE pipe material, take mass part as unit, comprise following raw material: Modified nano-calcium carbonate is 2 mass parts, and HDPE is 70 mass parts, and nano-calcium carbonate is 20 mass parts, and paraffin is 6 mass parts, p-hydroxybenzoic acid 3.5 parts by mass, organosilane-modified linear low density polyethylene 10.5 parts by mass, and dibutyltin dilaurate 0.7 parts by mass.

[0047] The preparation method of above-mentioned HDPE pipe, comprises the following steps:

[0048] (1) described modified nano-calcium carbonate is that the nano-calcium carbonate of 20 mass parts is mixed with the water of 80 mass parts and heated, forms the mixture of nano-calcium carbonate and water, then in the mixture of described nano-calcium carbonate and water Prepared by adding 5 parts by mass of coupling agent for modification;

[0049] (2) Preparation of organosilane-modified linear low-density polyethylene: melt organosilane and linear low-density polyethylene with...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a HDPE (high-density polyethylene) pipe and a preparation method thereof. The HDPE pipe comprises modified nano-calcium carbonate, HDPE, nano-calcium carbonate, p-hydroxybenzoic acid, organic silane modified linear low-density polyethylene, dibutyltin dilaurate and lubricants. The weight ratio of the p-hydroxybenzoic acid, the organic silane modified linear low-density polyethylene to the dibutyltin dilaurate is (5-15):(5-15):(0.1-1), and the HDPE pipe is prepared by the steps of raw material preparation, primary blank preparation, finished product processing and the like. Compared with the prior art, the HDPE pipe has the advantage that performances such as the tensile strength and the breaking elongation of the pipe are further improved.

Description

【Technical field】 [0001] The invention belongs to the technical field of polymers, and in particular relates to an HDPE pipe and a preparation method thereof. 【Background technique】 [0002] High-density polyethylene (High Density Polyethylene, referred to as "HDPE") as a high-crystallinity, non-polar thermoplastic resin, with its non-toxic, cheap, excellent moisture resistance, good mechanical properties, good chemical properties Stability, excellent cold resistance and easy molding processing are widely used in daily life and industrial and agricultural production. For example, HDPE double-wall corrugated pipes are used in municipal drainage and sewage pipeline system projects; underground drainage and sewage drainage in apartments and residential quarters; pre-buried pipelines in expressways, underground seepage pipe networks in golf courses; water conservancy projects such as farmland irrigation, water delivery, and drainage ; chemical industry, mine for fluid transport...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L23/06C08L91/06C08L23/08C08K9/06C08K9/04C08K3/26C08K5/13C08K5/54C08K13/06
CPCC08K2003/265C08K2201/011C08L23/06C08L2203/18C08L2205/03C08L2207/062C08L91/06C08L23/0815C08K9/06C08K9/04C08K3/26C08K5/13C08K5/54C08K13/06
Inventor 不公告发明人
Owner CHANGSHA WUDAO IND DESIGN CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com