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Plastic pipe machined by using bulk molding compounds

A technology of bulk molding compound and plastic pipe, which is applied in the field of pipelines, can solve the problems of inability to prepare large-diameter pipes, high cost, inconvenient processing and installation, etc., and achieve good application prospects, low cost, and improved impact resistance.

Active Publication Date: 2013-04-24
KUNMING PURETOWN ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inconvenient processing and installation, and high cost
[0004] However, due to the structural strength and other physical properties of the existing plastics, the prepared plastic pipes can only be used as small-diameter water supply and drainage pipes; they cannot be prepared into large-diameter pipes and embedded in the ground as the main pipe for water supply and drainage or the main pipe for industrial pipes.

Method used

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  • Plastic pipe machined by using bulk molding compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Formulated by weight ratio: 36 parts of phthalic anhydride-propylene glycol unsaturated polyester, 0.3 parts of cobalt naphthenate, 0.2 parts of methyl ethyl ketone peroxide, 30 parts of 500 mesh and 200 mesh calcium carbonate mixed by weight at 1:1. 0.2 part of electrostatic agent, 0.1 part of antioxidant, 0.2 part of pentabromophenol, which are mixed uniformly with a mixer to obtain a resin paste.

[0030] The prepared resin paste is soaked in a kneader with 28 parts by weight of alkali-free and twist-free glass roving. The glass roving is added within 5 minutes, kneaded for 15 minutes and mixed evenly.

[0031] Extruding the dough infiltrated with glass roving with an extruder, sealing and packaging with polyethylene film, and placing it in a dry environment at room temperature for 24 hours to obtain unsaturated fiber-reinforced agglomerated molding compound.

Embodiment 2

[0033] Formulated by weight ratio: 45 parts of phthalic anhydride-propylene glycol unsaturated polyester, 0.4 parts of cobalt naphthenate, 0.3 parts of methyl ethyl ketone peroxide, 30 parts of 500 mesh calcium carbonate, 0.2 parts of antistatic agent, 0.12 parts of antioxidant , 0.2 parts of pentabromophenol, mix it evenly with a mixer to obtain a resin paste.

[0034] The prepared resin paste is soaked in a kneader with 28 parts by weight of alkali-free and twist-free glass roving. The glass roving is added within 5 minutes, kneaded for 15 minutes and mixed evenly.

[0035] Extruding the dough infiltrated with glass roving with an extruder, sealing and packaging with polyethylene film, and placing it in a dry environment at room temperature for 24 hours to obtain unsaturated fiber-reinforced agglomerated molding compound.

Embodiment 3

[0037] Formulated by weight ratio: 40 parts of isophthalic acid-diethylene glycol unsaturated polyester, 0.4 parts of cobalt naphthenate, 0.3 parts of methyl ethyl ketone peroxide, 30 parts of 500 mesh calcium carbonate, 0.2 parts of antistatic agent, antistatic 0.12 parts of oxygen agent and 0.2 parts of pentabromophenol are mixed uniformly with a mixer to obtain a resin paste.

[0038] The prepared resin paste was soaked in a kneader with 30 parts by weight of carbon fiber, and the carbon fiber was added within 5 minutes, and kneaded for 15 minutes and mixed uniformly.

[0039] The material mass impregnated with carbon fiber is extruded with an extruder, sealed and packaged with polyethylene film, and placed in a dry environment at room temperature for 24 hours to obtain an unsaturated fiber-reinforced mass molding compound.

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Abstract

The invention relates to a plastic pipeline prepared by using bulk molding compounds. The plastic pipeline comprises the following materials in part by weight: 30-50 parts of unsaturated polyester, 0.3-0.5 part of cobalt naphthenate, 0.2-0.4 part of methyl ethyl ketone peroxide, 25-35 parts of reinforced fibers, 30-40 parts of calcium carbonate, 0.2-0.3 part of anti-static agent, 0.1-0.15 part of antioxidant and 0.2-0.3 part of pentabromo-phenol. According to the invention, the prepared unsaturated polyester fiber reinforced bulk molding compounds have the advantages of high toughness and high strength; the impact strength of the unsaturated polyester fiber reinforced bulk molding compounds is 150 kJ / m<2>, the bending strength of the unsaturated polyester fiber reinforced bulk molding compounds is 180 MPa, and the tensile strength of the unsaturated polyester fiber reinforced bulk molding compounds is 90 MPa. Through adoption of the prepared plastic pipeline, difficult problems in the prior art that the mechanical performance of the plastic material is lower and the prepared plastic pipeline, in particular a large-sized plastic pipeline, is hardly popularized and utilized in practice are solved. The plastic pipeline provided by the invention has the advantages of acid and alkali resistance, anti-corrosion property, low cost and good application prospect in the practice.

Description

Technical field [0001] The invention relates to a pipeline, in particular to a mass molding plastic pipeline. Background technique [0002] Unsaturated polyester fiber-reinforced agglomerate molding compound is a batch-shaped prepreg mainly composed of chopped glass fiber, unsaturated resin, fillers, and various additives. The material was first applied in the former West Germany and the UK in the 1960s, and then developed in the US and Japan in the 1970s and 1980s respectively. Because the unsaturated polyester fiber reinforced bulk molding compound has excellent electrical properties, mechanical properties, heat resistance and chemical corrosion resistance, and is suitable for various molding processes, it can meet the performance requirements of various products, so it is more and more popular. The favorite of the majority of users. [0003] The pipes in the prior art are mainly metal pipes, especially large pipes with a diameter of 500 mm but common unsaturated polymer, mainl...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08K13/04C08K7/14C08K7/06C08K7/04C08K3/26C08K5/14C08K5/13F16L9/12
Inventor 周禹珺田雨
Owner KUNMING PURETOWN ENVIRONMENTAL TECH
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