Polyethylene-polyvinyl chloride blend-modified tube and preparation method thereof

A polyvinyl chloride, blending modification technology, applied in rigid pipes, pipes, mechanical equipment, etc., can solve the problems of poor impact strength, short service life, poor ring stiffness of pipes, and achieve good creep resistance, Excellent ring stiffness, the effect of maintaining rigidity for a long time

Active Publication Date: 2014-12-10
KANGTAI PLASTIC SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing pipes have poor impact resistance, are sensitive to temperature, have poor ring stiffness, high cost and short service life

Method used

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  • Polyethylene-polyvinyl chloride blend-modified tube and preparation method thereof
  • Polyethylene-polyvinyl chloride blend-modified tube and preparation method thereof

Examples

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preparation example Construction

[0031] The preparation method of the above-mentioned polyethylene and polyvinyl chloride blend modified pipe comprises the following steps:

[0032] a. Weigh polyethylene resin, 50% coupling agent in total, compatibilizer and reinforcing agent in parts by weight, stir at 60-100°C for 5-20 minutes, and then cool to 30~38°C, after granulation, get spare material I;

[0033] b. After weighing polyvinyl chloride resin, stabilizer, pigment, processing modifier, remaining coupling agent, antioxidant, light stabilizer, remaining compatibilizer and impact modifier according to parts by weight, Stirring at 110-135°C for 7-30 minutes, then cooling to 30-43°C to obtain spare material II;

[0034] c. Mix and stir spare material I and spare material II for 5-15 minutes. After the temperature reaches 60-80°C, cool to 32-38°C and extrude to obtain a polyethylene-polyvinyl chloride blend-modified pipe.

[0035] Wherein, in the preparation method of the above-mentioned polyethylene and polyv...

Embodiment 1

[0043] Pipes modified by blending polyethylene and polyvinyl chloride in the following weight ratio:

[0044] 150 parts of polyvinyl chloride resin, 75 parts of polyethylene resin, 25 parts of activated nano barium sulfate, 1 part of carbon black, 6 parts of calcium zinc stabilizer, 10 parts of ACR, 1 part of polyethylene wax, 1 part of paraffin wax, phosphite 0.5 parts of antioxidant, 0.5 parts of light stabilizer benzophenone, 3 parts of epoxy acrylate graft copolymer, 5 parts of ethylene-vinyl acetate copolymer, 10 parts of chlorinated polyethylene, 10 parts of glass fiber, titanate 1 part of coupling agent.

[0045] Adopt following preparation method:

[0046] Add polyethylene resin, coupling agent (50% of the total number of parts), compatibilizer (50% of the total number of parts), and reinforcing agent into the high-speed mixer according to weight parts and stir for 10 minutes, the temperature reaches 65 ° C, discharge into the cooling machine, cooled to 38 degrees, a...

Embodiment 2

[0056] Pipes modified by blending polyethylene and polyvinyl chloride in the following weight ratio:

[0057] 100 parts of polyvinyl chloride resin, 75 parts of polyethylene resin, 25 parts of active nano-talc powder, 1 part of titanium dioxide, 3 parts of organic tin stabilizer, 10 parts of ACR, 1 part of polyethylene wax, 1 part of paraffin wax, phosphite anti- 0.5 parts of oxygen agent 168, 0.5 parts of light stabilizer benzotriazole, 2 parts of macromolecular silane coupling agent, 5 parts of chloromethyl styrene graft copolymer, 5 parts of nitrile rubber, 5 parts of chlorinated polyethylene , 5 parts of graphene, 1 part of titanate coupling agent.

[0058] The preparation method and processing parameters are the same as in Example 1.

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Abstract

The invention belongs to the field of drainage tubes, and particularly relates to a polyethylene-polyvinyl chloride blend-modified tube and a preparation method thereof. The polyethylene-polyvinyl chloride blend-modified tube aims to solve the technical problems of poor shock strength, high sensitivity to temperature, poor ring stiffness, higher cost and short service life in the existing tube. In order to solve the technical problems, the invention provides a polyethylene-polyvinyl chloride blend-modified tube which comprises the following components in parts by weight: 50-150 parts of polyethylene resin, 50-150 parts of polyvinyl chloride resin, 10-30 parts of nano material, 0.5-5 parts of pigment, 2-20 parts of leadless stabilizer, 1-20 parts of processing assistant, 1-5 parts of lubricant, 0.5-5 parts of antioxidant, 0.5-2 parts of photostabilizer, 1-25 parts of solubilizer, 1-15 parts of impact-resistant modifier, 1-15 parts of enhancer and 0.5-10 parts of coupling agent. The polyethylene-polyvinyl chloride blend-modified tube has the advantages of higher ring stiffness, favorable toughness, aging resistance and greatly higher shock strength.

Description

technical field [0001] The invention belongs to the field of sewage pipes, in particular to pipes modified by blending polyethylene and polyvinyl chloride and a preparation method thereof. technical background [0002] With the continuous advancement of urbanization in my country, the demand for buried sewage and drainage pipes has expanded, and the performance requirements for corrugated pipes have also increased, especially the impact strength. Ordinary extruded polyvinyl chloride (PVE) double-wall bellows has better ring stiffness and low material cost, but poor impact strength and is more sensitive to temperature. Ordinary polyethylene (PE) corrugated pipes have good toughness, but poor ring stiffness. To ensure ring stiffness, more materials are used, which wastes resources. [0003] At present, there is an urgent need to develop an environmentally friendly sewage discharge corrugated pipe with good ring stiffness, aging resistance, high strength, low temperature resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/06B29C47/92B29C48/09B29C48/16B29C48/92
CPCC08L27/06F16L9/12B29K2023/06B29K2027/06C08L23/04C08K3/013B29C48/022B29C48/09B29C48/16
Inventor 林云青张双全郝洪波郑术友周祖明
Owner KANGTAI PLASTIC SCI & TECH GRP
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