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PVC-U pipe material with shape memory function and its preparation method and application

A PVC-U and memory technology, which is applied in the field of PVC-U pipes with shape memory and its preparation, can solve the problems of complex processing technology and restrictions on the application of PVC-U deformation memory pipes, and achieve good comprehensive performance and good memory High deformation function and deformation recovery rate

Active Publication Date: 2021-03-02
RIFENG ENTERPRISE FOSHAN CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to achieve the deformation memory effect of this PVC-U pipe, its cross-linking requirements are very high, and the gel degree reaches 60%. Special equipment must be used to realize the chemical cross-linking of its molecular chains, which makes its processing technology very complicated and greatly Limiting the Application of PVC-U Deformation Memory Pipes in Trenchless Fields

Method used

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  • PVC-U pipe material with shape memory function and its preparation method and application
  • PVC-U pipe material with shape memory function and its preparation method and application
  • PVC-U pipe material with shape memory function and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Prepare the PVC-U pipe material with shape memory function, its formula comprises each component of following mass parts:

[0054] Polyvinyl chloride resin SG-5: 100 parts; calcium zinc heat stabilizer CZ-8601E-2: 3.5 parts; lubricant polyethylene oxide wax: 0.5 parts; processing modifier copolymer of methacrylate and ethyl acrylate : 1.5 parts; ethylene-vinyl acetate-carbonyl copolymer (toughening agent): 6 parts; 0.58 parts of crosslinking agent (wherein, dicumyl peroxide (DCP): 0.08 parts; phthalic acid diene Propyl ester (DAP): 0.5 parts); acid absorbent magnesium oxide: 3.0 parts; filler calcium carbonate: 20 parts; pigment titanium dioxide 2.0 parts.

[0055] The method for preparing a PVC-U pipe with shape memory function specifically includes the following steps:

[0056] (1) Put the polyvinyl chloride resin, heat stabilizer, processing modifier, toughening agent, and plasticizer (0 parts of plasticizer in this embodiment) into the high-speed mixing unit (Zhang...

Embodiment 2

[0060] Prepare the PVC-U pipe material with shape memory function, its formula comprises each component of following mass parts:

[0061] Polyvinyl chloride resin SG-5: 100 parts; thiol octyl tin T-890: 2.0 parts; lubricant fatty alcohol: 0.5 parts; lubricant monoglyceride monooleate: 0.2 parts; plasticizer epoxy soybean oil (ESO ): 2 parts; processing modifier methyl methacrylate-ethyl methacrylate-ethyl acrylate copolymer: 0.8 parts; toughening agent ethylene-butyl acrylate-carbonyl copolymer (E / nBA / CO): 5 parts; crosslinking agent dithiotetramethylthiuram (TMTD): 2.5 parts; acid absorbent (magnesium oxide: 3.0 parts; zinc oxide: 2.0 parts); filler calcium carbonate: 15 parts, pigment titanium dioxide 2.0 parts share.

[0062] The specific steps of the method for preparing a PVC-U pipe with shape memory function in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0064] Prepare the PVC-U pipe material with shape memory function, its formula comprises each component of following mass parts:

[0065] Polyvinyl chloride resin SG-5: 80 parts; PVC resin SG-3: 20 parts; calcium zinc heat stabilizer CZ-8601E-2: 3.8 parts; lubricant OP wax: 0.8 parts; lubricant homopolyethylene Wax 0.1 part; plasticizer epoxy butyl stearate (EBST): 0.5 part; processing modifier methyl methacrylate-styrene-butyl acrylate copolymer: 1.2 part; toughening agent ethylene-vinyl acetate Ester-carbonyl copolymer (E / VA / CO): 4 parts; crosslinking agent 1.6 parts (DCP: 0.1 part; triallyl isocyanurate (TAIC): 1.5 parts); acid absorbent zinc oxide: 2 parts; filler talcum powder: 8 parts, pigment titanium dioxide 2.0 parts.

[0066] The specific steps of the method for preparing a PVC-U pipe with shape memory function in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention provides a PVC-U pipe with a shape memory function and its preparation method and application. The PVC-U pipe with a shape memory function provided by the invention is prepared from raw materials comprising the following components by mass: polyvinyl chloride 100 parts of resin, 1.5-8.0 parts of heat stabilizer, 0.1-6.0 parts of lubricant, 0-8 parts of plasticizer, 0.5-8 parts of processing modifier, 1-10 parts of toughening agent, 0.02-5 parts of crosslinking agent Parts, 0-6 parts of acid absorbent, 0-30 parts of filler. The PVC-U pipe material of the present invention has a good shape memory function, and the PVC-U pipe material of the present invention is particularly suitable for repairing damaged pipelines under the condition of micro-excavation or no excavation. In addition, the PVC-U pipe of the present invention has a simple preparation process and low cost.

Description

technical field [0001] The invention relates to the technical field of preparation of PVC-U pipes with shape memory function, in particular to a PVC-U pipe with shape memory function and its preparation method and application. Background technique [0002] With the successive arrival of service life of pipelines in urban underground pipeline network, pipeline repair technology has attracted people's attention day by day. Traditional pipeline repair and pipeline replacement technologies not only lead to high construction costs, but also bring serious disturbance and impact to the residents and community life in the construction area. [0003] The "U"-shaped plastic pipe lining repair technology based on the principle of shape memory is to press the extruded circular plastic pipe (with a circular cross-section) into a "U" shape through a deformation device to make it change in diameter or After shrinking. After it is penetrated into the damaged pipe, it can be restored to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/02C08K5/14C08K5/40C08K5/3492C08K5/12C08K5/37
CPCC08L27/06C08L2201/12C08L2203/18C08L2205/025C08L2205/035C08L2312/00C08L71/02C08K13/02C08K5/14C08K5/12C08L91/00C08K5/40C08K5/34924C08L91/06C08K5/378
Inventor 曾富财汪磊李白千郑立贤刘在福
Owner RIFENG ENTERPRISE FOSHAN CO LTD
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