CN102996923B - Steel wire wound flexible pipe - Google Patents

Abstract

The invention discloses a kind of steel wire wound flexible pipe, include tube body, it is characterized in that: described tube body is composited by multiple structure, described multiple structure is followed successively by the modification of nylon 6 layers of internal layer from inside to outside, the layer of polyurethane of the second layer, the steel wire braid of third layer and outermost layer of polyurethane.The present invention has modification of nylon 6 layers and the layer of polyurethane of inside and outside layer, and centre has additional steel wire braid, thus rigidity and toughness are good, and meanwhile, oil resistant anti-wear performance is good, long service life.

Description

Steel wire wound flexible pipe

Technical field

The present invention relates to a kind of pipeline, mainly a kind of steel wire wound flexible pipe.

Background technology

Requiring that pipeline has good oil resistant, acid and alkali-resistance and ageing-resistant performance in auto industry, engineering machinery, the high-pressure delivery of handling machinery and some high pressure dedicated pipe, require that toughness is good simultaneously, general fiber hose is inapplicable.

Summary of the invention

The technical problem to be solved is to provide a kind of steel wire wound flexible pipe, its modification of nylon 6 having inside and outside layer and polyurethane, and centre has additional steel wire braid, thus rigidity and toughness are good, and meanwhile, oil resistant anti-wear performance is good, long service life.

For solving above-mentioned technical problem, the technical solution used in the present invention is:

A kind of steel wire wound flexible pipe, include tube body, it is characterised in that: described tube body is composited by multiple structure, and described multiple structure is followed successively by the modification of nylon 6 layers of internal layer from inside to outside, the layer of polyurethane of the second layer, the steel wire braid of third layer and outermost layer of polyurethane.

The steel wire braid of described third layer is single layer of wires braid or double-layer wire braid or three layers steel wire braid.

Described modification of nylon 6 is made up of the raw material of following weight portion:

nullPolrvinyl chloride 10-15、NYLON610 0-110、ABS high glue powder 5-8、Poly-4-methyl-1-pentene 5-8、Acrylic ester impact-resisting modifier ACR2-5、Bisphenol A polycarbonate 5-8、Cross-linking agent TAC1-2、Wollastonite in powder 5-10、Nanoclay 5-10、2-mercapto benzimidazole 1-2、Age resistor OD1-2、Antioxidant NBC 1-2、MTES 1-2、Di(dioctylpyrophosphato) ethylene titanate 1-2、Titanate coupling agent TMC-TTS1-2、Modified antioxidant 1010 1-2、Modified tree ash 15-20、Nano aluminum Alumina 5-8、Zinc stearate 1-2、Dibasic lead phosphite 1-2、Ethylene bis stearamide 1-2、Dibutyl maleate 2-3、Triethyl citrate 1-2、Dimethyl dimercapto 2-ethyl hexyl ethanoate stannum 1-2；

Described modified tree ash is prepared by the following method:

Tree ash is put into after 10-15% hydrogen peroxide solution soaks 3-4 hour, pull out, dry under temperature 40-45 degree to water content 2-3%, add the zinc stearate being equivalent to the nano silicon of its weight 5-8%, isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters of 5-8%, the dibutyl maleate of 1-2%, 3-4%, mix homogeneously, at 60-70 DEG C, 3500-4000 rev/min is stirred 30-50 minute, mixing, drying；

Described modified antioxidant 1010 is prepared by the following method:

(1) kieselguhr 10-15% soak with hydrochloric acid 3-4 hour, deionized water wash, then soak 3-4 hour with 10-12% sodium hydroxide solution, then with deionized water wash to neutral, dry；

(2) in antioxidant 1010, add the sodium laurylsulfate being equivalent to the kieselguhr of described drying of its weight 3-5%, the sodium tripolyphosphate of 2-3%, 3-5% aluminium hydroxide, 2-3%, stir 40-50 minute at 60-70 DEG C；

The preparation of modified nylon-6 material comprises the following steps:

(1) weigh each raw material by formula, put in high-speed mixer, be preheated to 80-90 DEG C, insulation, stirring 5-6 hour；Continue heating to 95-105 DEG C, and continue stirring, be incubated 30-45 minute；

(2) carrying out melt blending pelletize in above-mentioned homogeneous mixture feeding parallel double-screw extruder, extruder barrel temperature is 245-270 DEG C.

Modification of nylon 6 in the present invention, formal name used at school is polyamide, and its height is heat-resisting, has rigidity and the toughness of excellence, can life-time service；It disclosure satisfy that strong being continually changing of temperature and humidity bears huge strain simultaneously, has the effect of warpage preventing.

Polyurethane full name is polyurethanes, is the general designation containing the macromolecular compound repeating carbamate groups on main chain, and it is to be formed by organic diisocyanate or polyisocyanates and dihydroxy or polyol addition polymerization.Polyurethane can have higher elasticity and intensity in wider hardness range and have the wearability of excellence, oil resistivity, fatigue durability and anti-vibration resistance.

The present invention there is steel wire braid have excellent resistance to circumnutating property and fatigue durability.

The good flame resistance of the present invention, nonpoisonous and tasteless, shock-resistant, endurance.Outward appearance is beautiful, can be processed into shades of colour, and length can arbitrarily select.

The invention have the advantage that

The present invention has modification of nylon 6 and the polyurethane of inside and outside layer, and centre has additional steel wire braid, thus rigidity and toughness are good, and meanwhile, oil resistant anti-wear performance is good, long service life.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention.

Detailed description of the invention

Referring to Fig. 1, a kind of steel wire wound flexible pipe, include tube body, described tube body is composited by multiple structure, described multiple structure is followed successively by the modification of nylon 6 layer 1 of internal layer, the layer of polyurethane 2 of the second layer, the steel wire braid 3 of third layer and outermost layer of polyurethane 4 from inside to outside.

The steel wire braid 3 of described third layer is single layer of wires braid or double-layer wire braid or three layers steel wire braid.

Modified nylon-6 material, is made up of the raw material of following weight portion:

Polrvinyl chloride 10, NYLON610 0, ABS high glue powder 5, poly-4-methyl-1-pentene 5, acrylic ester impact-resisting modifier ACR2, bisphenol A polycarbonate 8, cross-linking agent TAC2, wollastonite in powder 10, nanoclay 5, 2-mercapto benzimidazole 2, age resistor OD2, antioxidant NBC 2, MTES 2, Di(dioctylpyrophosphato) ethylene titanate 2, titanate coupling agent TMC-TTS2, modified antioxidant 1010 2, modified tree ash 15, nano aluminum Alumina 5, zinc stearate 1, dibasic lead phosphite 1, ethylene bis stearamide 2, dibutyl maleate 2, triethyl citrate 1, dimethyl dimercapto 2-ethyl hexyl ethanoate stannum 2；

Described modified tree ash is prepared by the following method:

Tree ash is put into after 10% hydrogen peroxide solution soaks 3 hours, pull out, dry under temperature 40-45 degree to water content 3%, add be equivalent to the nano silicon of its weight 8%, 8% isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters, 1% dibutyl maleate, 4% zinc stearate, mix homogeneously, at 60-70 DEG C, 3500-4000 rev/min is stirred 50 minutes, mixing, drying.

Described modified antioxidant 1010 is prepared by the following method:

(1) kieselguhr 15% soak with hydrochloric acid 4 hours, deionized water wash, then soak 3 hours with 12% sodium hydroxide solution, then with deionized water wash to neutral, dry；

(2) in antioxidant 1010, add be equivalent to the kieselguhr of described drying of its weight 5%, 3% sodium tripolyphosphate, 3% aluminium hydroxide, 2% sodium laurylsulfate, at 60-70 DEG C stir 40-50 minute.

Preparation method comprises the following steps:

(1) weigh each raw material by formula, put in high-speed mixer, be preheated to 90 DEG C, insulation, stirring 6 hours；Continue heating to 105 DEG C, and continue stirring, be incubated 45 minutes；

(2) carrying out melt blending pelletize in above-mentioned homogeneous mixture feeding parallel double-screw extruder, extruder barrel temperature is 245-270 DEG C.

The performance parameter of the nylon that the present embodiment is produced is shown in following table.

Hot strength: 109Mpa(DIN73378)

Impact strength: 90Mpa(DINENISO17901)

Oil resistance (expansion rate after immersion oil) %1.1

Low temperature properties DEG C :-70, (standard PV3304)

Abrasiveness mg:15(DIN53754)

Fuel oil infiltration capacity is less than 0.0042 gram/day.

Claims (2)

1. a steel wire wound flexible pipe, include tube body, it is characterised in that: described tube body is composited by multiple structure, and described multiple structure is followed successively by the modification of nylon 6 layers of internal layer from inside to outside, the layer of polyurethane of the second layer, the steel wire braid of third layer and outermost layer of polyurethane；

Described modification of nylon 6 is made up of the raw material of following weight portion:

nullPolrvinyl chloride 10-15、NYLON610 0-110、ABS high glue powder 5-8、Poly-4-methyl-1-pentene 5-8、Acrylic ester impact-resisting modifier ACR2-5、Bisphenol A polycarbonate 5-8、Cross-linking agent TAC1-2、Wollastonite in powder 5-10、Nanoclay 5-10、2-mercapto benzimidazole 1-2、Age resistor OD1-2、Antioxidant NBC 1-2、MTES 1-2、Di(dioctylpyrophosphato) ethylene titanate 1-2、Titanate coupling agent TMC-TTS1-2、Modified antioxidant 1010 1-2、Modified tree ash 15-20、Nano aluminum Alumina 5-8、Zinc stearate 1-2、Dibasic lead phosphite 1-2、Ethylene bis stearamide 1-2、Dibutyl maleate 2-3、Triethyl citrate 1-2、Dimethyl dimercapto 2-ethyl hexyl ethanoate stannum 1-2；

Described modified tree ash is prepared by the following method:

Tree ash is put into after 10-15% hydrogen peroxide solution soaks 3-4 hour, pull out, dry under temperature 40-45 degree to water content 2-3%, add the zinc stearate being equivalent to the nano silicon of its weight 5-8%, isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters of 5-8%, the dibutyl maleate of 1-2%, 3-4%, mix homogeneously, at 60-70 DEG C, 3500-4000 rev/min is stirred 30-50 minute, mixing, drying；

Described modified antioxidant 1010 is prepared by the following method:

(1) kieselguhr 10-15% soak with hydrochloric acid 3-4 hour, deionized water wash, then soak 3-4 hour with 10-12% sodium hydroxide solution, then with deionized water wash to neutral, dry；

(2) in antioxidant 1010, add the sodium laurylsulfate being equivalent to the kieselguhr of described drying of its weight 3-5%, the sodium tripolyphosphate of 2-3%, 3-5% aluminium hydroxide, 2-3%, stir 40-50 minute at 60-70 DEG C；

The preparation of modified nylon-6 material comprises the following steps:

(1) weigh each raw material by formula, put in high-speed mixer, be preheated to 80-90 DEG C, insulation, stirring 5-6 hour；Continue heating to 95-105 DEG C, and continue stirring, be incubated 30-45 minute；

(2) carrying out melt blending pelletize in above-mentioned homogeneous mixture feeding parallel double-screw extruder, extruder barrel temperature is 245-270 DEG C.

2. a kind of steel wire wound flexible pipe according to claim 1, it is characterised in that: the steel wire braid of described third layer is single layer of wires braid or double-layer wire braid or three layers steel wire braid.