Method for recycling waste plastic for pipeline anticorrosion

A technology of waste plastics and pipes, which is applied in the field of reuse of steel pipe 3LPE anti-corrosion waste plastics, can solve the problems of unavoidable waste PE scraps and powder materials, affect the factory environment, and occupy a large storage area, so as to achieve good promotion and application value and eliminate environmental pollution , cost-saving effect

Active Publication Date: 2013-12-18
PANYU ZHUJIANG STEEL PIPE LIANYUNGANG
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  • Abstract
  • Description
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Problems solved by technology

[0002] At present, the external anti-corrosion technology of 3PE steel pipes is very mature at home and abroad. During the production process, each order must be evaluated according to the technical standards. Peeling and re-coating will inevitably produce a large amount of PE coating waste; secondly, there must be a lead pipe every time the machine is turned on, and there must be a jacking pipe when it is shut down. A large amount of waste PE coating will definitely be generated on the lead pipe and the jacking pipe ; Third, before starting the official produ

Method used

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  • Method for recycling waste plastic for pipeline anticorrosion
  • Method for recycling waste plastic for pipeline anticorrosion
  • Method for recycling waste plastic for pipeline anticorrosion

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[0014] Example 1

[0015] Use large pieces of recycled granulated material after cutting and crushing: remove the epoxy layer and adhesive, use a woodworking saw to cut into thin slices, strips, or use a mechanical knife for preliminary cutting of large pieces of waste; then use a strong special The plastic crusher crushes into pieces of 1cm*1cm or less than 1cm in size; then uses automatic cleaning equipment to clean to remove harmful impurities such as sand, metal, etc.; then, after drying, add the required additives and Additives, specifically: polyethylene resin: antioxidant 1010: PE wax=80:18.8:0.2:1.0, after the compounding, re-use special plastic granulating equipment to plasticize, granulate, cool, and cut to make Products are packaged and classified and labeled for 3PE anti-corrosion. After testing: density 0.958g / cm 3 The melt flow rate is 0.21 g / 10min; the oxidation induction period is 30.8min; the heat-resistant aging at 100℃, 2400h is 27%. Meet SY / T0413-2002 techni...

Example Embodiment

[0016] Example 2

[0017] Recycled granulated material after the pipe end strips and scraps are crushed by peeling off the epoxy powder layer and adhesive: peel off the epoxy layer and adhesive, and cut into thin slices or strips with a woodworking saw, or The large pieces of waste are initially cut with mechanical knives; then crushed into pieces with a size of 1cm*1cm or less than 1cm with a powerful special plastic crusher; then cleaned with automatic cleaning equipment to remove harmful impurities such as sand, metal, etc. ; Then, after drying, add the required additives and auxiliaries according to the product needs, specifically: polyethylene resin: antioxidant 1010: PE wax = 75: 23.8: 0.2: 1.0, after the ingredients, re-made with special plastics The granulation equipment is then plasticized, granulated, cooled, and cut into products, packaged and classified and labeled for 3PE anti-corrosion. After testing: density 0.960g / cm3; melt flow rate 0.2 g / 10min; oxidation induct...

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Abstract

The invention discloses a method for recycling waste plastic for pipeline anticorrosion, belonging to the technical field of high molecular materials applied to steel tube anticorrosion. The method is characterized by comprising the following steps: crushing; cleaning; re-proportioning anticorrosive 3PE (Poly Ethylene) waste plastic of a pipeline 3, namely the ratio of regenerating prilling materials: resin: an antioxygen: a processing agent=( is (80-70):(18-15):0.2:1.0. After prilling, the quality of the waste plastic satisfies the demand of technical standard (SY/T0413-2002) on the polyethylene anticorrosive layer of the buried steel pipeline, and the waste plastic can be reused to 3PE anticorrosion. The environmental pollution is eliminated and the environment problem is solved. The cost of raw materials for pipeline anticorrosion is saved, the utilization ratio of resources is improved, and the domestic blank is filled. The method belongs to circular economy, obtains good economic and social benefits, and has better popularization and application valves.

Description

technical field [0001] The technical field of polymer material technology of the present invention specifically relates to a method for reusing steel pipe 3LPE anti-corrosion waste plastics. Background technique [0002] At present, the external anti-corrosion technology of 3PE steel pipes is very mature at home and abroad. During the production process, each order must be evaluated according to the technical standards. Peel off the skin and re-coat, so that a large amount of PE coating waste will inevitably be produced; secondly, there must be a lead pipe every time the machine is turned on, and there must be a jacking pipe when the machine is shut down. ; Third, before starting the official production each time, the heating and plasticizing time in the plastic machine is too long, and the overheated and melted materials are discharged, which inevitably produces a lot of massive waste; Fourth, the end of the coated pipe is for protection The quality of the butt weld requir...

Claims

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Application Information

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IPC IPC(8): B29B9/02B29B17/02
CPCY02W30/62
Inventor 龚建文
Owner PANYU ZHUJIANG STEEL PIPE LIANYUNGANG
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