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Pressure-resistant single-layer two-color hose and preparation method thereof

A two-color tube and single-layer tube technology, which is applied to tubular articles, other household appliances, household appliances, etc., can solve the problems of high equipment cost, delamination of PVC hoses, and leakage of liquid from cracks in the pipe layers, and reduce the difficulty of the preparation process. , The effect of reducing accident rate and equipment cost

Active Publication Date: 2018-09-28
刘新华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing PVC reinforced pipes have the following deficiencies: (1) the steel wire skeleton and braid layer interposed in the middle are likely to cause delamination of the PVC hose, that is, the separation of the inner and outer layers of plastic, which easily causes liquid and air leakage from the pipe layer gap; (2) ) While the steel wire skeleton and braid layer in the PVC pipe interlayer play a pressure-resistant function, it also increases the weight and cost of the hose per unit length
The preparation process is complex and the equipment cost is high
Moreover, in the existing drying and extrusion equipment, the problem of large energy consumption is still not taken seriously.

Method used

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  • Pressure-resistant single-layer two-color hose and preparation method thereof
  • Pressure-resistant single-layer two-color hose and preparation method thereof
  • Pressure-resistant single-layer two-color hose and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] (1) After pulverizing 80 parts of polyvinyl chloride and 5 parts of chemical fiber in the bottom raw material, put them into the hopper of the extruder, heat and dry at 90°C for 0.5h, and control the speed of the stirring device in the hopper to 30r / min;

[0063] (2) After the drying is completed, 5 parts of epoxidized soybean oil and dioctyl phthalate are added to the hopper, wherein dioctyl phthalate accounts for 5% by weight of the plasticizer total amount, stir After uniformity, the temperature of the hopper and the screw at the feed inlet is directly raised from the drying temperature to the melting temperature of 150°C, and the raw material is heated to a molten state and finally extruded through the screw and machine head;

[0064] (3) After the strip-shaped melt extruded by the extruder in step (2) is water-cooled, dried, and pulverized, it enters two extruders successively to exhaust and extrude respectively in a molten state. Said extruder adopts single-laye...

Embodiment 2

[0068] (1) After pulverizing 120 parts of polyvinyl chloride and 30 parts of chemical fiber in the bottom raw material, put them into the hopper of the extruder, heat and dry at 130°C for 2 hours, and control the speed of the stirring device in the hopper to 180r / min ;

[0069] (2) After the drying is completed, add 40 parts of epoxidized soybean oil and dibutyl ester to the hopper, wherein the weight percentage of dibutyl ester to the total amount of plasticizer is 15%, and after stirring evenly, put the hopper and the feed The screw at the mouth is directly heated from the drying temperature to the melting temperature of 160°C, and the raw material is heated to a molten state and finally extruded through the screw and the machine head;

[0070] (3) After the strip-shaped melt extruded by the extruder in step (2) is water-cooled, dried, and pulverized, it enters two extruders successively to exhaust and extrude respectively in a molten state. Said extruder adopts single-laye...

Embodiment 3

[0074] (1) After crushing 90 parts of polyvinyl chloride and 10 parts of chemical fiber in the bottom raw material, put them into the hopper of the extruder, heat and dry at 100°C for 1 hour, and control the speed of the stirring device in the hopper to 60r / min ;

[0075] (2) After the drying is completed, add 10 parts of epoxidized soybean oil and dibutyl phthalate to the hopper, wherein dibutyl phthalate accounts for 10% by weight of the plasticizer total amount, stir After uniformity, the hopper and the screw at the feed inlet are directly heated from the drying temperature to the melting temperature of 155°C, and the raw material is heated to a molten state and finally extruded through the screw and the machine head;

[0076] (3) After the strip-shaped melt extruded by the extruder in step (2) is water-cooled, dried, and pulverized, it enters two extruders successively to exhaust and extrude respectively in a molten state. Said extruder adopts single-layer two-color tube ...

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Abstract

The invention belongs to the technical field of plastic hose preparing, and particularly relates to a pressure-resisting single-layer double-color hose. A single-layer hose body is composed of hose layers including the bottom layer and the surface layer which are in two different colors, the surface layer is prepared from 10 parts to 30 parts of polyvinyl chloride resin with the needed color, and the bottom layer is prepared from 80 parts to 120 parts of polyvinyl chloride, 5 parts to 30 parts of chemical fibers and 5 parts to 40 parts of plasticizers; and the invention further relates to a preparing method for the pressure-resisting single-layer double-color hose and energy-saving consumption-reducing equipment used in the preparing method. A drying and extruding integrated energy-saving extruder and a single-layer double-color hose machine head are included. According to the pressure-resisting single-layer double-color hose prepared through the preparing method and the equipment, the bottom layer is a pressure-resisting enhancement layer, the surface layer meets different requirements through color changing, and the attractive effect is achieved; and the chemical fibers capable of enhancing the pressure-resisting strength of the hose is fused into PVC plastic, compared with the technical scheme that a weaving polyester rope serves as a reinforcing layer, the method has the beneficial effects that the preparing technology difficulty is reduced, more handiness is achieved, layering cannot appear, and the accident rate is reduced.

Description

technical field [0001] The invention belongs to the technical field of plastic hose preparation, and in particular relates to a pressure-resistant single-layer double-color hose and a preparation method thereof. Background technique [0002] According to the purpose, PVC hose can be divided into industrial grade (specially transporting industrial water, oil, chemical raw materials, etc.) Conveying of solid particles and powdery materials. [0003] PVC reinforced pipe is a PVC hose embedded with steel wire skeleton and high-strength braided layer. It has transparent and smooth pipe wall, low concentration acid and alkali resistance, high elasticity, not easy to aging, long service life and high pressure resistance. It is widely used in agriculture. Water pump machinery, oil depot, petrochemical equipment, industry, engineering mine, food manufacturing and other fields. PVC steel wire pipe is what we often call PVC steel wire reinforced pipe. Its pipe material is a three-lay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/04B29C47/20B29B9/06B29B9/14B29K27/06B29L23/00B29C48/32
CPCB29B9/06B29B9/14B29C48/16B29C48/30B29C48/32B29K2027/06B29L2023/005
Inventor 刘新华
Owner 刘新华
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