CN2791423Y

CN2791423Y - Composite mine-use pipe of hard polyvinyl chloride

Info

Publication number: CN2791423Y
Application number: CN 200420113667
Authority: CN
Inventors: 王仁强; 陈敏; 鲁文耕; 聂连秀
Original assignee: GINDE PIPE INDUSTRY Co Ltd
Current assignee: GINDE PIPE INDUSTRY Co Ltd
Priority date: 2004-11-25
Filing date: 2004-11-25
Publication date: 2006-06-28
Anticipated expiration: 2014-11-25

Abstract

The utility model relates to a novel composite mine-use pipe of hard polyvinyl chloride. The utility model is characterized in that the composite pipe is formed by overlapping a rigid polyvinyl chloride inner layer improved on the basis of antistatic agents, a polyvinyl chloride foaming middle layer and a rigid polyvinyl chloride outer layer improved on the basis of antistatic agents. The utility model has the advantages of simple manufacturing technique, easy fabrication, etc.; special devices do not need to be added; the utility model has the advantages of a common hard rigid polyvinyl chloride mine-use pipe, and improves the original advantages of sound insulation, heat insulation, anti-vibration and light weight; simultaneously, the disadvantages of poor corrosion resistance, low heat resistant property, easy impact rupture, etc. of a common rigid polyvinyl chloride pipe are overcome. The utility model can be used for work, such as water supply, drainage, air compression, slurry spraying, methane drawing, etc., underground a coal mine, and can take the place of a common hard rigid polyvinyl chloride mine-use pipe and a traditional steel pipe and a glass fiber reinforced plastic pipe.

Description

A kind of rigid polyvinyl chloride grandidierite is with managing

Technical field:

The utility model relates to a kind of rigid polyvinyl chloride grandidierite with pipe, provides a kind of by the compound mining pipes of the novel rigid polyvinyl chloride of anti-static agent modification especially.

Background technique:

In the prior art, there are steel pipe, Glass Steel Tube in traditional colliery with tubing, but the shortcoming that these two kinds of tubing all exist some to generally acknowledge: bigger as proportion, the underground work difficulty is big; Corrosion-resistant, bump easily produces spark and has potential safety hazard; Cost height, installation and maintenance inconvenience; But the interface requirement height, easy to leak etc.In recent years, country widelys popularize the application plastic tube, and plastic tube develops very rapid with its excellent properties and the just continuous alternative metals of power conservation feature and other traditional material pipes.It has following excellent characteristics: antistatic, fire-retardant; Nontoxic, corrosion-resistant, anti-high pressure; Light weight, easily installation are " to mould Dai Gang ", the desirable tubing of realizing resource optimization.The colliery is used for the contour hazardous environment in colliery with the plastic tube pipe, and the colliery except the physical and mechanical properties that should possess general plastic tube, also must have antistatic behaviour, self-extinguish ability with plastic tube, and products of combustion must not have hypertoxicity.

Though the real wall plastics of existing rigid polyvinyl chloride mining pipes has characteristics such as antistatic behaviour, self-extinguish ability, but its specific (special) requirements applications in the down-hole is restricted, we use rigid polyvinyl chloride NEW TYPE OF COMPOSITE drainage pipe, not only improve the advantage of aspects such as the sound insulation of solid wall pipe material, heat insulation, shockproof and light weight, and particularly improving aspect shock resistance, corrosion resistance, the resistance to heat.

The technology contents of invention:

The utility model provides the rigid polyvinyl chloride grandidierite with pipe, and tubing is by the superimposed formation of rigid polyvinyl chloride skin (3) of the rigid polyvinyl chloride internal layer (1) of anti-static agent modification, foam polyvinyl chloride mesosphere (2), anti-static agent modification.

The compound mining pipes of the rigid polyvinyl chloride that the utility model provides, the used antistatic agent of internal and external layer can be cationic antistatic agent, anionic antistatic agent, non-ionic antistatic agent, zwitterionic type antistatic agent.

The compound mining pipes of the rigid polyvinyl chloride that the utility model provides, the composite pipe external diameter of pipe can be φ 40～1000mm, bed thickness is:

Inner plastic layer (1) 0.1～6.0mm;

Intermediate plastic layer (2) 1.0～20mm;

Outer plastic layer (3) 0.1～5.0mm;

The compound mining pipes of the rigid polyvinyl chloride that the utility model provides is applicable to water supply under the coal mine, draining, pressure wind, whitewashes and draws out methane.

The utility model provides above-mentioned rigid polyvinyl chloride grandidierite with the preparation method of pipe to be: manufacturing equipment adopts two extruders to come production PVC mesosphere foaming composite pipe, wherein an extruder is extruded PVC internal and external layer mixture, in the batching die head materials flow is divided into two strands, the materials flow of these two bursts of fusions forms the interior exodermis of tubing; Another extruder is squeezed into mesosphere PVC mixture in the same batching die head, is in the centre of internal and external layer, is the mesosphere.By adjusting the kind or the prescription of two layers of plastic, can make goods reach needed density and size.

The utility model has the advantages that manufacturing process is simple, produce easily, need not to increase special equipment, it is except that the advantage that has ordinary rigid rigid polyvinyl chloride mining pipes concurrently, not only improve the advantage of aspects such as its original sound insulation, heat insulation, shockproof and light weight, also solved common hard polyvinyl chloride pipe corrosion resistance difference simultaneously and resistance to heat is low and meet and impact shortcoming such as easily break.Can be widely used in mining field, replace ordinary rigid rigid polyvinyl chloride mining pipes and conventional steel, frp pipe, have very big social benefit and economic benefit.

Description of drawings:

Accompanying drawing 1 is rigid polyvinyl chloride grandidierite pipe.

Embodiment:

The utility model is made of anti-static agent modified polyvinyl chloride raw material etc., as shown in Figure 1, this composite pipe is by rigid polyvinyl chloride internal layer (1), PVC mesosphere (2), the superimposed formation of anti-static agent modified hard polyethylene chloride skin (3) of anti-static agent modification

Embodiment 1

This tubing inner plastic is joined in the Corvic by 1%～10% the ratio of cationic anti-static agent modification in weight resin, adds other processing aids such as bear board again, mix with homogenizer.

Intermediate plastic layer by Corvic and processing aid through mixing.

This tubing outer layer plastic is joined in the Corvic by 1%～10% the ratio of cationic antistatic agent in weight resin, adds other processing aids such as bear board again, mix with homogenizer.

Embodiment 2

This tubing inner plastic is joined in the Corvic by 1%～10% the ratio of anionic antistatic agent modification in weight resin, adds other processing aids such as bear board again, mix with homogenizer.

Intermediate plastic layer by Corvic and processing aid through mixing.

Embodiment 3

Intermediate plastic layer by Corvic and processing aid through mixing.

This tubing outer layer plastic is joined in the Corvic by 1%～10% the ratio of non-ionic antistatic agent in weight resin, adds other processing aids such as bear board again, mix with homogenizer.

Embodiment 4

This tubing inner plastic is joined in the Corvic by 1%～10% the ratio of zwitterionic type anti-static agent modification in weight resin, adds other processing aids such as bear board again, mix with homogenizer.

Intermediate plastic layer by Corvic and processing aid through mixing.

Claims

1, a kind of rigid polyvinyl chloride grandidierite is characterized in that with pipe: this composite pipe is by the superimposed formation of rigid polyvinyl chloride skin (3) of the rigid polyvinyl chloride internal layer (1) of anti-static agent modification, foam polyvinyl chloride mesosphere (2), anti-static agent modification.

2, according to the described rigid polyvinyl chloride grandidierite of claim 1 pipe, it is characterized in that: described composite pipe caliber φ 40～φ 1000mm, bed thickness is:

Inner plastic layer (1) 0.1～6.0mm;

Intermediate plastic layer (2) 1.0～20mm;

Outer plastic layer (3) 0.1～5.0mm;