CN103756557B - A kind of preparation method of solidifying frie retardant coating and the mining high flame retardant flexible cable be made up of it - Google Patents
A kind of preparation method of solidifying frie retardant coating and the mining high flame retardant flexible cable be made up of it Download PDFInfo
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Abstract
Solidify a preparation method for frie retardant coating, the method is made up of following steps: 1) linoleic acid dimer and quadrol are pressed and weigh; 2) preheating linoleic acid dimer, drips mixing quadrol; 3) add liquid polyisobutylene rubber, under decompression step by step to high vacuum environment, be obtained by reacting mixture; 4) be filled with nitrogen under normal pressure, in mixture, add o-phthalic acid dibutyl ester, phosphorous acid and antimonous oxide powder, stir obtained solidification frie retardant coating.A kind of mining high flame retardant flexible cable, is coated with solidification frie retardant coating layer, is filled with high flame retardant and fills the bed of material between many insulated wire cores and external sheath layer outside insulated wire cores.A kind of preparation method of solidifying frie retardant coating provided by the invention and the mining high flame retardant flexible cable be made up of it, can solve the defect that existing flexible cable is fire-retardant, self-extinguishment is poor, and have excellent physics, mechanical property and heatproof flame-retardant performance, self-extinguishment is good.
Description
Technical field
The present invention relates to a kind of solidification frie retardant coating field, especially a kind of preparation method of solidifying frie retardant coating and the mining high flame retardant flexible cable be made up of it.
Background technology
At present, for people, the needs of electric energy, data, information are transmitted to safety in tunnel, mine, to mine mechanism with communicate, the safety of set lights relies on and significantly increases.The appearance of new technology makes the online and networking of the equipment of this respect become possibility, result in the fast development of ground and down-hole power, communication system.In order to connect these equipment, need to use a large amount of mine cables in these structures and field.Typically, in underground ventilating system and mine laneway, installing mining high flame retardant flexible cable is apply easily.Because gas blower is connected with power supply by these devices with mine laneway, the fire-retardant fireproof characteristic of cable insulation and sheath material is basic demand, namely require these materials to have and do not prolong combustion and certainly put out characteristic, and under the adverse environment condition of down-hole, there is good mechanical and physical performance and electric property.
The insulation layer of current mine cable or restrictive coating are generally single fire retardant and CABLE MATERIALS are mixed.The fire retardant of a large amount of use is halogen fire retardant, though there is certain not flame-retarding power, generates a large amount of smog and poisonous gas during burning, and its amount to increase with temperature of combustion and increases, therefore can only be used for low-temperature flame retardant.Recently the halogen-free flame-retardant smog used is few, and toxicity is little or nontoxic, but containing a large amount of hydration material, because dehydration reaction reduces physics, the mechanical property of cable during temperature height, so resistance combustion temperature can not be high.In a word, owing to using single fire retardant material, cable is not that a large amount of smog of generation and toxic gas reduce cable performance because of dehydration reaction exactly, thus affects resistance combustion temperature and the duration of fire resistance of cable.As everyone knows, mine tunnel humidity is comparatively large, and the product such as the inorganic putty of the fire-proof sealing material adopted in traditional cable trench or back-fire relief bag, moisture-sensitive is out of shape, firm poor performance, fire prevention effective performance is had a strong impact on, be difficult to reach fire-retardant, fire prevention, moistureproof effect.
Some shortcoming of existing fluorine-containing cable insulation structure overcome by the appearance of polyvinyl chloride/tetrafluoroethylene/polyvinylidene difluoride (PVDF) insulated cable structure.At USP4,605, in 815 (U.S. Patent Publication No.), disclose a kind of construction of cable, the conductor adopting pvc coating to insulate by least one, the braiding glass crust of dipping tetrafluoroethylene and polyvinylidene difluoride (PVDF) protective coat composition, although this construction of cable provides good non-conductive property, fire-retardant smoke retaining, but also need to improve further its fire-retardant smoke retaining.
Owing to having formulated more strict fire safety standard, mine cable insulating material needs burning and the self-extinguishment of improving it, keep excellent mechanical and physical performance simultaneously, need to improve its propagation of flame and smoke generation characteristics to low expense wire cable insulating material compositions, excellent physical properties will be had simultaneously.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of preparation method of solidifying frie retardant coating and the mining high flame retardant flexible cable be made up of it, the defect that existing flexible cable is fire-retardant, self-extinguishment is poor can be solved, have excellent physics, mechanical property and heatproof flame-retardant performance, self-extinguishment is good.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of preparation process of solidifying frie retardant coating is as follows:
1) by linoleic acid dimer and quadrol be in molar ratio 0.92 ~ 1.12: 1 ratio precise;
2) linoleic acid dimer is preheating to 125 ~ 130 DEG C, drips mixing quadrol gradually, drip off in 20 ~ 50min, slowly promote temperature of reaction by 20 DEG C/h heat-up rate, until temperature is increased to 235 DEG C;
3) the liquid polyisobutylene rubber being preheated to 40 ~ 60 DEG C is added, add-on is 8 ~ 12% of linoleic acid dimer and quadrol total mass, keep the Heating temperature at least 1 hour of 235 DEG C, and measure the water distilled out, when the quality of distilling water outlet reaches 0.05% of linoleic acid dimer, quadrol and polyisobutylene rubber total mass, under decompression step by step to high vacuum environment, reaction obtains mixture in 2 ~ 12 hours;
4) be filled with nitrogen under normal pressure, add o-phthalic acid dibutyl ester, phosphorous acid and antimonous oxide powder to mixing species, stir 30min obtained solidification frie retardant coating.
High vacuum environment in step 3) is the environment of pressure≤100Pa.
In step 4), the quality adding o-phthalic acid dibutyl ester is that step 3) obtains 0.02 ~ 0.08% of mixture quality, the quality of phosphorous acid is that step 3) obtains 0.01 ~ 0.05% of mixture quality, and the quality of antimonous oxide powder is that step 3) obtains 1.2 ~ 8% of mixture quality.
A kind of mining high flame retardant flexible cable, comprise the cable core be made up of many insulated wire cores, cable core is wrapped with external sheath layer, is coated with solidification frie retardant coating layer, is filled with high flame retardant and fills the bed of material between many insulated wire cores and external sheath layer outside insulated wire cores.
Insulated wire cores is made up of conductor and the insulation layer be wrapped in outside conductor, is coated with solidification frie retardant coating layer outside insulation layer.
The thickness of insulation layer is 1.2 ~ 5.5mm.
The quantity of insulated wire cores is 3 ~ 5, and mutual spiral winding forms cable core together.
One solidification frie retardant coating provided by the invention, mining high flame retardant flexible cable can be used for, but mainly inorganic fire-retarded thing---antimony sesquioxide powder has and presses down cigarette and the effect such as to glow under flame interaction, and form cooperative flame retardant effect with the material after the polyisobutylene rubber be dissolved in coating carbonizes.
Present invention also offers the mining high flame retardant flexible cable be made up of above-mentioned solidification frie retardant coating, by applying solidification frie retardant coating layer in insulated wire cores outward and filling the mode that high flame retardant fills the bed of material, the defect that existing flexible cable is fire-retardant, self-extinguishment is poor can be solved, there is excellent physics, mechanical property and heatproof flame-retardant performance, the performance index such as breaking down field strength, elongation at break, tensile strength, shock elasticity, volume specific resistance, dielectric strength are all better than international standard and national standard.Fire-retardant fireproof formula is according to IEC standard test, and in mechanical property, aging resistance, resistance to low temperature, insulation resistance, smog index, poison exponent, the performance index such as the acid number of smog all reach or are better than IEC standard.
Show the test that finished cable carries out: after finished cable 135 DEG C × 168h is aging, check the bonding degree of different integral part, result is excellent.3700 volts of 5 minutes dielectric strength passed examinations, ~ 25 DEG C of low-temperature bendings and shock test excellent.According to NFC32070(or IEC60332 ~ 1) carry out frame propagation test, show that there is high flame retardant.Carry out uninflammability can test, uninflammability more than 950 DEG C reaches 3 hours, fray-out of flame in 1 ~ 3 second.The production of cable of the present invention does not need the new equipment of another increasing and changes production operation process and step, need only make suitable process modification.Easy realization is produced in enormous quantities.Product cost is low.Cost is 3/4ths of external similar performance product price.The present invention can be used for comprising various mining power cable and signal cable, can be widely used in the private cables such as mine, subway, tunnel.
In the present invention, thickness of insulating layer is designed to 1.2 ~ 5.5mm, both can ensure that cable has excellent electric property under normal usage, have again certain mechanical property.
Property indices of the present invention is as shown in the table:
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention, and the quantity of insulated wire cores is 3.
Embodiment
Embodiment one
A kind of preparation process of solidifying frie retardant coating is as follows:
1) by linoleic acid dimer and quadrol be in molar ratio 1: 1 ratio precise;
2) linoleic acid dimer is preheating to 125 DEG C, drips mixing quadrol gradually, drip off in 20min, slowly promote temperature of reaction by 20 DEG C/h heat-up rate, until temperature is increased to 235 DEG C;
3) the liquid polyisobutylene rubber being preheated to 60 DEG C is added, add-on is 12% of linoleic acid dimer and quadrol total mass, keep the Heating temperature at least 1 hour of 235 DEG C, and measure the water distilled out, when the quality of distilling water outlet reaches 0.05% of linoleic acid dimer, quadrol and polyisobutylene rubber total mass, under decompression step by step to high vacuum environment (100Pa), reaction obtains mixture in 2 hours;
4) be filled with nitrogen under normal pressure, in mixture, add o-phthalic acid dibutyl ester, phosphorous acid and antimonous oxide powder, stir 30min obtained solidification frie retardant coating.
In step 4), the quality adding o-phthalic acid dibutyl ester is that step 3) obtains 0.02% of mixture quality, the quality of phosphorous acid is that step 3) obtains 0.01% of mixture quality, and the quality of antimonous oxide powder is that step 3) obtains 1.2% of mixture quality.
As shown in Figure 1, a kind of mining high flame retardant flexible cable using above-mentioned solidification frie retardant coating to make, it is by three insulated wire cores, mutual spiral winding forms cable core together, cable core is wrapped with external sheath layer 1, be coated with solidification frie retardant coating layer 3 outside insulated wire cores, be filled with high flame retardant between many insulated wire cores and external sheath layer 1 and fill the bed of material 2.
Insulated wire cores is made up of conductor 5 and the insulation layer 4 be wrapped in outside conductor 5, is coated with solidification frie retardant coating layer 3 outside insulation layer 4.
The thickness of insulation layer 4 is 5mm.
Insulation layer 4 is ethylene-propylene rubber(EPR) layer.
External sheath layer 1 is neoprene layer or chlorinated polyethylene rubber layer.
The step of producing this cable craft is as follows:
1) at conductor 5 external parcel one layer insulating 4, three insulated wire cores are formed respectively;
2) by three insulated wire cores respectively by the groove that solidification frie retardant coating is housed, under ensureing in groove insulated wire cores at least 30cm being immersed in solidification frie retardant coating liquid level completely; Then by length at least 5 meters, temperature is dry in 85 ± 2 DEG C of hot blast drying tunnels.
3) the three mutual spiral windings of insulated wire cores scribbling solidification frie retardant coating layer 3 after above-mentioned process are formed cable core together;
4) continued through by the cable core after above-mentioned process and be provided with in the penstock of entrance, high flame retardant stopping composition is injected by entrance, inserts in the gap of cable core to form high flame retardant and fill the bed of material 2; Inlet pressure remains between 0.7 ± 0.1MPa;
5) at above-mentioned cable core layer external parcel one deck external sheath layer 1.
Embodiment two
A kind of preparation process of solidifying frie retardant coating is as follows:
1) by linoleic acid dimer and quadrol be in molar ratio 1.12: 1 ratio precise;
2) linoleic acid dimer is preheating to 130 DEG C, drips mixing quadrol gradually, drip off in 50min, slowly promote temperature of reaction by 20 DEG C/h heat-up rate, until temperature is increased to 235 DEG C;
3) the liquid polyisobutylene rubber being preheated to 40 DEG C is added, add-on is 8% of linoleic acid dimer and quadrol total mass, keep the Heating temperature at least 1 hour of 235 DEG C, and measure the water distilled out, when the quality of distilling water outlet reaches 0.05% of linoleic acid dimer, quadrol and polyisobutylene rubber total mass, under decompression step by step to high vacuum environment (80Pa), reaction obtains mixture in 12 hours;
4) be filled with nitrogen under normal pressure, in mixture, add o-phthalic acid dibutyl ester, phosphorous acid and antimonous oxide powder, stir 30min obtained solidification frie retardant coating.
In step 4), the quality adding o-phthalic acid dibutyl ester is that step 3) obtains 0.08% of mixture quality, the quality of phosphorous acid is that step 3) obtains 0.05% of mixture quality, and the quality of antimonous oxide powder is that step 3) obtains 8% of mixture quality.
A kind of mining high flame retardant flexible cable using above-mentioned solidification frie retardant coating to make, it is by five insulated wire cores, mutual spiral winding forms cable core together, cable core is wrapped with external sheath layer 1, be coated with solidification frie retardant coating layer 3 outside insulated wire cores, be filled with high flame retardant between many insulated wire cores and external sheath layer 1 and fill the bed of material 2.
Insulated wire cores is made up of conductor 5 and the insulation layer 4 be wrapped in outside conductor 5, is coated with solidification frie retardant coating layer 3 outside insulation layer 4.
The thickness of insulation layer 4 is 1.2mm.
Insulation layer 4 is ethylene-propylene rubber(EPR) layer.
External sheath layer 1 is neoprene layer or chlorinated polyethylene rubber layer.
The step of producing this cable craft is as follows:
1) at conductor 5 external parcel one layer insulating 4, five insulated wire cores are formed respectively;
2) by five insulated wire cores respectively by the groove that solidification frie retardant coating is housed, under ensureing in groove insulated wire cores at least 30cm being immersed in solidification frie retardant coating liquid level completely; Then by length at least 5 meters, temperature is dry in 85 ± 2 DEG C of hot blast drying tunnels.
3) the five mutual spiral windings of insulated wire cores scribbling solidification frie retardant coating layer 3 after above-mentioned process are formed cable core together;
4) continued through by the cable core after above-mentioned process and be provided with in the penstock of entrance, high flame retardant stopping composition is injected by entrance, inserts in the gap of cable core to form high flame retardant and fill the bed of material 2; Inlet pressure remains between 0.7 ± 0.1MPa;
5) at above-mentioned cable core layer external parcel one deck external sheath layer 1.
Embodiment three
A kind of preparation process of solidifying frie retardant coating is as follows:
1) by linoleic acid dimer and quadrol be in molar ratio 1.12: 1 ratio precise;
2) linoleic acid dimer is preheating to 128 DEG C, drips mixing quadrol gradually, drip off in 40min, slowly promote temperature of reaction by 20 DEG C/h heat-up rate, until temperature is increased to 235 DEG C;
3) the liquid polyisobutylene rubber being preheated to 55 DEG C is added, add-on is 10.5% of linoleic acid dimer and quadrol total mass, keep the Heating temperature at least 1 hour of 235 DEG C, and measure the water distilled out, when the quality of distilling water outlet reaches 0.05% of linoleic acid dimer, quadrol and polyisobutylene rubber total mass, under decompression step by step to high vacuum environment (80Pa), reaction obtains mixture in 6 hours;
4) be filled with nitrogen under normal pressure, in mixture, add o-phthalic acid dibutyl ester, phosphorous acid and antimonous oxide powder, stir 30min obtained solidification frie retardant coating.
In step 4), the quality adding o-phthalic acid dibutyl ester is that step 3) obtains 0.06% of mixture quality, the quality of phosphorous acid is that step 3) obtains 0.03% of mixture quality, and the quality of antimonous oxide powder is that step 3) obtains 4.2% of mixture quality.
A kind of mining high flame retardant flexible cable using above-mentioned solidification frie retardant coating to make, it is by four insulated wire cores, mutual spiral winding forms cable core together, cable core is wrapped with external sheath layer 1, be coated with solidification frie retardant coating layer 3 outside insulated wire cores, be filled with high flame retardant between many insulated wire cores and external sheath layer 1 and fill the bed of material 2.
Insulated wire cores is made up of conductor 5 and the insulation layer 4 be wrapped in outside conductor 5, is coated with solidification frie retardant coating layer 3 outside insulation layer 4.
The thickness of insulation layer 4 is 1.2mm.
Insulation layer 4 is ethylene-propylene rubber(EPR) layer.
External sheath layer 1 is neoprene layer or chlorinated polyethylene rubber layer.
The step of producing this cable craft is as follows:
1) at conductor 5 external parcel one layer insulating 4, four insulated wire cores are formed respectively;
2) by four insulated wire cores respectively by the groove that solidification frie retardant coating is housed, under ensureing in groove insulated wire cores at least 30cm being immersed in solidification frie retardant coating liquid level completely; Then by length at least 5 meters, temperature is dry in 85 ± 2 DEG C of hot blast drying tunnels.
3) the four mutual spiral windings of insulated wire cores scribbling solidification frie retardant coating layer 3 after above-mentioned process are formed cable core together;
4) continued through by the cable core after above-mentioned process and be provided with in the penstock of entrance, high flame retardant stopping composition is injected by entrance, inserts in the gap of cable core to form high flame retardant and fill the bed of material 2; Inlet pressure remains between 0.7 ± 0.1MPa;
5) at above-mentioned cable core layer external parcel one deck external sheath layer 1.
Embodiment four
A kind of preparation process of solidifying frie retardant coating is as follows:
1) by linoleic acid dimer and quadrol be in molar ratio 0.92: 1 ratio precise;
2) linoleic acid dimer is preheating to 126 DEG C, drips mixing quadrol gradually, drip off in 30min, slowly promote temperature of reaction by 20 DEG C/h heat-up rate, until temperature is increased to 235 DEG C;
3) the liquid polyisobutylene rubber being preheated to 45 DEG C is added, add-on is 9.2% of linoleic acid dimer and quadrol total mass, keep the Heating temperature at least 1 hour of 235 DEG C, and measure the water distilled out, when the quality of distilling water outlet reaches 0.05% of linoleic acid dimer, quadrol and polyisobutylene rubber total mass, under decompression step by step to high vacuum environment (70Pa), reaction obtains mixture in 8 hours;
4) be filled with nitrogen under normal pressure, in mixture, add o-phthalic acid dibutyl ester, phosphorous acid and antimonous oxide powder, stir 30min obtained solidification frie retardant coating.
In step 4), the quality adding o-phthalic acid dibutyl ester is that step 3) obtains 0.05% of mixture quality, the quality of phosphorous acid is that step 3) obtains 0.04% of mixture quality, and the quality of antimonous oxide powder is that step 3) obtains 6% of mixture quality.
As shown in Figure 1, a kind of mining high flame retardant flexible cable using above-mentioned solidification frie retardant coating to make, it is by three insulated wire cores, mutual spiral winding forms cable core together, cable core is wrapped with external sheath layer 1, be coated with solidification frie retardant coating layer 3 outside insulated wire cores, be filled with high flame retardant between many insulated wire cores and external sheath layer 1 and fill the bed of material 2.
Insulated wire cores is made up of conductor 5 and the insulation layer 4 be wrapped in outside conductor 5, is coated with solidification frie retardant coating layer 3 outside insulation layer 4.
The thickness of insulation layer 4 is 1.2mm.
Insulation layer 4 is ethylene-propylene rubber(EPR) layer.
External sheath layer 1 is neoprene layer or chlorinated polyethylene rubber layer.
The step of producing this cable craft is as follows:
1) at conductor 5 external parcel one layer insulating 4, three insulated wire cores are formed respectively;
2) by three insulated wire cores respectively by the groove that solidification frie retardant coating is housed, under ensureing in groove insulated wire cores at least 30cm being immersed in solidification frie retardant coating liquid level completely; Then by length at least 5 meters, temperature is dry in 85 ± 2 DEG C of hot blast drying tunnels.
3) the three mutual spiral windings of insulated wire cores scribbling solidification frie retardant coating layer 3 after above-mentioned process are formed cable core together;
4) continued through by the cable core after above-mentioned process and be provided with in the penstock of entrance, high flame retardant stopping composition is injected by entrance, inserts in the gap of cable core to form high flame retardant and fill the bed of material 2; Inlet pressure remains between 0.7 ± 0.1MPa;
At above-mentioned cable core layer external parcel one deck external sheath layer 1.
Claims (6)
1. solidify a preparation method for frie retardant coating, it is characterized in that the method is made up of following steps:
1) by linoleic acid dimer and quadrol be in molar ratio 0.92 ~ 1.12: 1 ratio precise;
2) linoleic acid dimer is preheating to 125 ~ 130 DEG C, drips mixing quadrol gradually, drip off in 20 ~ 50min, slowly promote temperature of reaction by 20 DEG C/h heat-up rate, until temperature is increased to 235 DEG C;
3) the liquid polyisobutylene rubber being preheated to 40 ~ 60 DEG C is added, add-on is 12% of linoleic acid dimer and quadrol total mass, keep the Heating temperature at least 1 hour of 235 DEG C, and measure the water distilled out, when the quality of distilling water outlet reaches 0.05% of linoleic acid dimer, quadrol and polyisobutylene rubber total mass, under decompression step by step to high vacuum environment, reaction obtains mixture in 2 ~ 12 hours;
4) be filled with nitrogen under normal pressure, in mixture, add o-phthalic acid dibutyl ester, phosphorous acid and antimonous oxide powder, stir 30min obtained solidification frie retardant coating;
In step 4), the quality adding o-phthalic acid dibutyl ester is that step 3) obtains 0.02 ~ 0.08% of mixture quality, the quality of phosphorous acid is that step 3) obtains 0.01 ~ 0.05% of mixture quality, and the quality of antimonous oxide powder is that step 3) obtains 1.2 ~ 8% of mixture quality.
2. a kind of preparation method of solidifying frie retardant coating according to claim 1, is characterized in that: the high vacuum environment in step 3) is the environment of pressure≤100Pa.
3. a mining high flame retardant flexible cable, comprise the cable core be made up of many insulated wire cores, cable core is wrapped with external sheath layer (1), it is characterized in that: be coated with solidification frie retardant coating layer (3) outside insulated wire cores, be filled with high flame retardant between many insulated wire cores and external sheath layer (1) and fill the bed of material (2);
Described solidification frie retardant coating layer (3) is the layer of the solidification frie retardant coating coating adopting method according to claim 1 to obtain.
4. mining high flame retardant flexible cable according to claim 3, is characterized in that: insulated wire cores is by conductor (5) and be wrapped in conductor (5) insulation layer outward (4) and form, and is coated with solidification frie retardant coating layer (3) outside insulation layer (4).
5. mining high flame retardant flexible cable according to claim 4, is characterized in that: the thickness of insulation layer (4) is 1.2 ~ 5.5mm.
6. mining high flame retardant flexible cable according to claim 3, is characterized in that: the quantity of insulated wire cores is 3 ~ 5, and mutual spiral winding forms cable core together.
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