Method for producing ultra high molecular weight polyethylene wear-resistant pipe

A technology of ultra-high polymer and production method, which is applied in the field of pipe manufacturing, can solve the problems of unstable extrusion pressure of polyethylene pipes, large longitudinal thickness deviation of products, and affecting the internal quality of products, so as to achieve good shaping, stable product quality, The effect of constant oil temperature

Inactive Publication Date: 2009-10-14
YANGZHOU JUYE WEAR-RESISTANT COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, when UHMWPE pipes are manufactured, water-cooling or air-cooling is usually used in the cooling and shaping section of the mold. The extrusion pressure of the product is unstable, and the shape of the product is difficult, and the pressure instability causes the longitudinal thickness deviation of the product to be large, which affects the internal quality of the product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A method for producing an ultrahigh molecular weight polyethylene wear-resistant pipe, comprising the steps of:

[0013] 1), uniformly mixing polyethylene powder with a molecular weight of more than 1.5 million and polyethylene sodium accounting for 4% of the total weight percentage;

[0014] 2), the material obtained in step 1) is extruded in an extruder, the die head adopts a pipe-making die head, and the extrusion temperature is 160 ° C;

[0015] 3) The extruded pipe is cooled and shaped with high-temperature resistant and anti-wear oil, and the cooling and shaping temperature is 115-118°C;

[0016] 4) Draw and cut the shaped pipe into an appropriate length;

[0017] 5) Heat up the temperature of the pipe to 90°C, and flang the nozzles at both ends.

Embodiment 2

[0019] A method for producing an ultrahigh molecular weight polyethylene wear-resistant pipe, comprising the steps of:

[0020] 1), uniformly mixing polyethylene powder with a molecular weight of more than 1.5 million and polyethylene sodium accounting for 6% of the total weight percentage;

[0021] 2), the material obtained in step 1) is extruded in an extruder, the die head adopts a pipe-making die head, and the extrusion temperature is 230 ° C;

[0022] 3) The extruded pipe is cooled and shaped with high-temperature resistant and anti-wear oil, and the cooling and shaping temperature is 118°C;

[0023] 4) Draw and cut the shaped pipe into an appropriate length;

[0024] 5) Heat up the temperature of the pipe to 110°C, and flang the nozzles at both ends.

Embodiment 3

[0026] A method for producing an ultrahigh molecular weight polyethylene wear-resistant pipe, comprising the steps of:

[0027] 1), uniformly mixing polyethylene powder with a molecular weight of more than 1.5 million, polyethylene sodium accounting for 5% of the total weight percentage, and a colorant accounting for 3-4% of the total weight percentage;

[0028] 2), the material obtained in step 1) is extruded in an extruder, the die head adopts a pipe-making die head, and the extrusion temperature is 200 ° C;

[0029] 3) The extruded pipe is cooled and shaped with high-temperature resistant and anti-wear oil, and the cooling and shaping temperature is 115-118°C;

[0030] 4) Draw and cut the shaped pipe into an appropriate length;

[0031] 5) Heat the pipe to 100°C, and flang the ends of the pipe.

[0032] The above-mentioned colorant may be graphite.

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PUM

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Abstract

The invention discloses a method for producing an ultra high molecular weight polyethylene wear-resistant pipe, and the method belongs to the technical field of production of tubes and pipes. The method comprises the following steps of: 1) evenly mixing polyethylene powder above 1.5 million molecular weight and polyethylene sodium which accounts for 4-6 percent of the total weight; 2) extruding the obtained material in the step 1) in an extruder, wherein a mold head adopts a pipe making mold head, and the extrusion temperature is 160-230 DEG C; 3) carrying out the cooling and shaping on the extruded pipe material by adopting high-temperature-resistant and anti-wear oil, the temperature for cooling and shaping is 115-118 DEG C; 4) carrying out the traction on the shaped pipe material and cutting the shaped pipe material into the appropriate length; 5) increasing the temperature of the pipe material to 90-110 DEG C and carrying out the edge-turning on pipe ends at two ends. As the polyethylene sodium is added in raw materials in the method as a lubricant, when in extrusion in the extruder, the surface is smooth and the extrusion is easy; when cooling, the method adopts the high-temperature-resistant and anti-wear oil, the oil temperature is constant and not affected by seasons, the shaping of the pipe material is good and the product quality is stable.

Description

technical field [0001] The invention relates to a method for manufacturing a pipe, in particular to a method for producing an ultrahigh molecular polyethylene pipe. Background technique [0002] In the prior art, when UHMWPE pipes are manufactured, water-cooling or air-cooling is usually used in the cooling and shaping section of the mold. The extrusion pressure of the product is unstable, which makes it difficult to shape the product, and the unstable pressure causes a large deviation in the longitudinal thickness of the product, which affects the internal quality of the product. Contents of the invention [0003] The purpose of the present invention is to provide a production method of ultra-high molecular polyethylene wear-resistant pipe, which can make the pipe material have good shape and stable quality. [0004] The object of the present invention is achieved like this, the production method of ultrahigh molecular polyethylene wear-resistant pipe, comprises the step...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/00B29C47/92C10M107/04C10N30/06B23K23/00B29L23/00B29C48/09B29C48/92
CPCB29C48/92B29C2948/92704B29C48/09B29C2948/92638B29C2948/92895B29C2948/92923B29C2948/92933
Inventor 王伏成乐少兵
Owner YANGZHOU JUYE WEAR-RESISTANT COMPOSITE MATERIAL CO LTD
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