Non-digging PE-specialized gas tube
A gas pipe, non-excavation technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problem that PE pipes cannot achieve high toughness and high strength at the same time, and achieve high strength and excellent performance , high toughness effect
Active Publication Date: 2011-05-18
福建恒杰塑业新材料有限公司
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Problems solved by technology
[0008] In order to solve the technical defect that the PE pipes of the prior art formula cannot achieve high toughness and high strength at the same time, the present invention provides a special PE gas pipe for non-excavation. The pipe has high toughness and high strength at the same time, and can Applied in demanding fields such as non-excavation
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[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] The inventors have concluded through long-term experiments that it is necessary to adopt other methods that can improve the toughness and heat resistance of PE without reducing the rigidity and heat resistance of the material on the basis of strengthening and stiffening with inorganic or organic modifiers in order to obtain strength. And PE modified materials with higher toughness and more balanced performance. The inventors also found that, as a highly crystalline semi-crystalline polymer, PE determines its physical and mechanical properties to a certain extent by its crystallization properties. By reducing the particle volume of PE crystals, the interfacial bonding strength between these crystalline particles and the PE polymer can be increased; further refining the crystalline particles can increase the contact area between these particle fill...
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Abstract
The present invention discloses a non-digging PE-specialized gas tube which comprises the following materials by weight: 90-95 parts of middle density polyethylene; 3-5 parts of stiffening and toughening additive; and 3-5 parts of compatibilizer. The method for preparing the non-digging PE-specialized gas tube comprises the following steps: mixing the materials of 90-95 parts of middle density polyethylene, 3-5 parts of stiffening and toughening additive and 3-5 parts of compatibilizer by weight; processing the material mixture with the modes of extruding, molding pressing or injection; and executing cooling shaping to the tube obtained through the modes of extruding, molding pressing or injection. The non-digging PE-specialized gas tube of the invention can effectively increase the toughness and strength of PE tube, and is especially suitable for the application in the non-digging field.
Description
technical field [0001] The invention relates to the field of pipe materials, in particular to a buried non-excavation special PE gas pipe prepared by polyethylene (PE). Background technique [0002] With the continuous development of society and economy, the scale of construction is increasing day by day, especially the construction of urban infrastructure, environmental protection facilities and residential buildings is growing rapidly, and the amount of buried pipes used for drainage, gas transmission and water transportation is increasing. . [0003] The current buried pipes mainly adopt excavation technology. For the excavated buried pipes with low tensile and bending strength and poor toughness, in the occasions where construction is impossible or excavation is not allowed, such as crossing rivers, Lakes, important traffic arteries, important buildings, etc. show great limitations and obvious deficiencies, and it is difficult to meet higher requirements. Therefore, th...
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IPC IPC(8): F16L9/12C08L23/06C08K3/22C08K3/26C08K3/36C08K3/34C08K5/098
Inventor 王存奇
Owner 福建恒杰塑业新材料有限公司