CN116082767A - Wrapping wire material with good flexibility and bending resistance for plug and preparation method thereof - Google Patents
Wrapping wire material with good flexibility and bending resistance for plug and preparation method thereof Download PDFInfo
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- CN116082767A CN116082767A CN202310210596.7A CN202310210596A CN116082767A CN 116082767 A CN116082767 A CN 116082767A CN 202310210596 A CN202310210596 A CN 202310210596A CN 116082767 A CN116082767 A CN 116082767A
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 18
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
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- 150000001875 compounds Chemical class 0.000 claims description 6
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- 229920005606 polypropylene copolymer Polymers 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 3
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 3
- QHWKHLYUUZGSCW-UHFFFAOYSA-N Tetrabromophthalic anhydride Chemical compound BrC1=C(Br)C(Br)=C2C(=O)OC(=O)C2=C1Br QHWKHLYUUZGSCW-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
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- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
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- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- CAYGQBVSOZLICD-UHFFFAOYSA-N hexabromobenzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1Br CAYGQBVSOZLICD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
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- 229920005862 polyol Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
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- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000000344 soap Substances 0.000 claims description 3
- AUHHYELHRWCWEZ-UHFFFAOYSA-N tetrachlorophthalic anhydride Chemical compound ClC1=C(Cl)C(Cl)=C2C(=O)OC(=O)C2=C1Cl AUHHYELHRWCWEZ-UHFFFAOYSA-N 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 2
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a wrapping wire material for a plug, in particular to a wrapping wire material with good flexibility and bending resistance for a plug and a preparation method thereof. The preparation method comprises the following raw materials: matrix resin, composite 1, filler, plasticizer, heat stabilizer, light stabilizer and flame retardant; according to the invention, the mode of blending matrix resin by adopting a composite material is adopted, so that the wear resistance, softness, chemical resistance, stress cracking resistance and bending resistance of the SPVC are improved, and secondly, the problem of poor thermal stability and light resistance of the SPVC is solved by adding various auxiliary agents, and meanwhile, the ageing resistance is improved, so that the covered wire material has better thermal stability, light resistance and ageing resistance, and simultaneously, the mobility is better, the processability is excellent, the ignition point is high, the fire-retardant standard is reached, and the covered wire material has good flexibility and strong bending resistance, is used for a plug wire, and can not break after being bent for many times.
Description
Technical Field
The invention relates to a wrapping wire material for a plug, in particular to a wrapping wire material with good flexibility and bending resistance for a plug and a preparation method thereof.
Background
Conventionally, wire coating materials made of a polyvinyl chloride-containing composition, which is a polyvinyl chloride-containing composition, are known, and SPVC is generally used as a matrix resin, which has better flexibility than HPVC, but has poor mechanical properties per se, low abrasion resistance, and at the same time, fillers added during the preparation process cause an influence on the flexibility of SPVC; because the electric wire of the plug end has the largest bending times in daily practice and is also the place where bending is most easy to occur, the coating material adopted for the electric wire needs to have excellent flexibility; in view of the above, there is an urgent need for a covering material for plugs that has good flexibility, bending resistance, and wear resistance, to improve the shortcomings of the prior art.
Disclosure of Invention
The invention aims to provide a flexible and bending-resistant covered wire material for a plug and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the above purpose, on the one hand, the invention provides a flexible and bending-resistant covered wire material for a plug, which comprises the following raw materials in parts by weight: 30-50 parts of matrix resin, 10-20 parts of composite material, 4-12 parts of filler, 3-9 parts of plasticizer, 2-5 parts of heat stabilizer, 0.5-3 parts of light stabilizer and 0.5-1.5 parts of flame retardant;
the composite material is selected from at least one of polyethylene, polypropylene and ethylene-vinyl acetate copolymer; the polyethylene has better impact strength, is soft and tough, can improve the flexibility of the product by being compounded with matrix resin, and has good chemical stability, excellent corrosion resistance and good irradiation resistance; the polypropylene has better mechanical property, outstanding stress cracking resistance and wear resistance, excellent bending resistance, repeated doubling without damage and capability of greatly improving the bending resistance of the envelope material; the ethylene-vinyl acetate copolymer has better elasticity, flexibility and environmental stress cracking resistance; the acetate fiber has better toughness and dimensional stability.
As a further improvement of the technical scheme, the matrix resin is preferably polyvinyl chloride, in particular SPVC.
As a further improvement of the technical scheme, the filler is selected from one or more of calcium carbonate, talcum powder, hydrated silicon dioxide, glass fiber, clay powder, asbestos and ceramic fiber; the strength, flexibility, heat resistance, corrosion resistance, processability and the like of the covered wire material can be improved by modifying the filler.
As a further improvement of the present technical solution, the plasticizer is selected from one or more of a group consisting of a cold phthalate, an aliphatic dibasic acid, a phosphate, a polyol ester, an epoxy compound and a chlorine-containing compound, and its main purpose is to increase the plasticity of the matrix resin, improve the processability, reduce the viscosity of the plastic, increase the fluidity, and be able to increase the flexibility of the covering material.
As a further improvement of the present technical solution, the heat stabilizer is at least one selected from the group consisting of a salt-based lead salt heat stabilizer, a metal soap heat stabilizer and an organotin heat stabilizer, and is used for improving the effect of degrading the performance of the covered wire material due to degradation caused by heating in the preparation of the covered wire material.
As a further improvement of the technical scheme, the light stabilizer is selected from one or more of carbon black, white carbon black, zinc oxide, titanium oxide, salicylates and dibenzools, and the main purpose of the light stabilizer is to inhibit or weaken the degradation of light to an envelope material, improve the light resistance of the material and reduce the aging phenomenon caused by illumination.
As a further improvement of the technical scheme, the flame retardant is selected from one or more of phosphate, tricresyl phosphate, phosphoric acid, nano antimony trioxide, aluminum hydroxide, chlorinated paraffin, hexabromobenzene, decabromodiphenyl ether, tetrachlorophthalic anhydride and tetrabromophthalic anhydride, and the main purpose is to improve the flame retardancy of the covered wire material.
In another aspect, the present invention provides a method for preparing the flexible and bending-resistant covered wire material for plugs, which comprises the following steps:
s1, adding matrix resin into a reaction kettle with a stirring device, heating and carrying out hot melting treatment to form a flowing shape, then adding a composite material and a heat stabilizer, and starting the stirring device to carry out blending treatment to obtain a mixture;
s2, sequentially adding the filler, the plasticizer, the light stabilizer and the flame retardant into the mixture, dispersing and stirring the material by adopting an ultrasonic dispersing machine, extruding by adopting a double-screw extruder, and cooling to obtain the covered wire material.
Preferably, in the step S1, the hot melting temperature is 115-125 ℃, the blending temperature is 130-180 ℃, and the blending treatment time is 5-10min.
Preferably, in the step S2, the mixing temperature is 110-130 ℃, the treatment time is 20-30min, and the extrusion temperature is 180-220 ℃.
Compared with the prior art, the invention has the beneficial effects that:
according to the high-flexibility bending-resistant plug wrap wire material and the preparation method thereof, the mode of blending matrix resin by adopting a composite material is adopted, so that the wear resistance, flexibility, chemical resistance, stress cracking resistance and bending resistance of SPVC are improved, the problem that the quality of the wrap wire material is poor due to weaker SPVC strength is avoided, and secondly, the problem that the SPVC thermal stability and the light resistance are poor is solved by adding various auxiliary agents, and meanwhile, the ageing-resistant performance is improved, so that the wrap wire material has better thermal stability, light resistance and ageing resistance, better flowability, excellent processability and high ignition point, and reaches the flame-retardant standard.
Drawings
Fig. 1 is an overall flow diagram of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a flexible and bending-resistant covered wire material for a plug, which comprises the following raw materials in parts by weight: 30-50 parts of matrix resin, 10-20 parts of composite material, 4-12 parts of filler, 3-9 parts of plasticizer, 2-5 parts of heat stabilizer, 0.5-3 parts of light stabilizer and 0.5-1.5 parts of flame retardant.
On the basis of the above, the method comprises the following steps:
the matrix resin is preferably polyvinyl chloride, in particular SPVC, has better flexibility, soft product, large elongation at break and better shock absorption.
The composite material is selected from at least one of polyethylene, polypropylene and ethylene-vinyl acetate copolymer; the polyethylene has better impact strength, is soft and tough, can improve the flexibility of the product by being compounded with matrix resin, and has good chemical stability, excellent corrosion resistance and good irradiation resistance; the polypropylene has better mechanical property, outstanding stress cracking resistance and wear resistance, excellent bending resistance, repeated doubling without damage and capability of greatly improving the bending resistance of the envelope material; the ethylene-vinyl acetate copolymer has better elasticity, flexibility and environmental stress cracking resistance; the acetate fiber has better toughness and dimensional stability.
The filler is selected from one or more of calcium carbonate, talcum powder, hydrated silicon dioxide, glass fiber, clay powder, asbestos and ceramic fiber, and the strength, flexibility, heat resistance, corrosion resistance, processability and the like of the covered wire material can be improved by modifying the filler.
The plasticizer is selected from one or more of cold phthalic acid ester, aliphatic dibasic acid, phosphate ester, polyol ester, epoxy compound and chlorine-containing compound, and has the main purposes of increasing the plasticity of matrix resin, improving the processability, reducing the viscosity of plastic, increasing the fluidity and improving the flexibility of the covering material.
The heat stabilizer is at least one selected from a salt-based lead salt heat stabilizer, a metal soap heat stabilizer and an organic tin heat stabilizer, and is used for improving the effect of degrading the performance of the covered wire material due to degradation caused by heating in the preparation of the covered wire material.
The light stabilizer is one or more selected from carbon black, white carbon black, zinc oxide, titanium oxide, salicylates and dibenzools, and is mainly used for inhibiting or weakening the degradation of light to the covered wire material, improving the light resistance of the material and reducing the aging phenomenon caused by illumination.
The flame retardant is one or more selected from phosphate, tricresyl phosphate, phosphoric acid, nano antimony trioxide, aluminum hydroxide, chlorinated paraffin, hexabromobenzene, decabromodiphenyl ether, tetrachlorophthalic anhydride and tetrabromophthalic anhydride, and the main purpose is to improve the flame retardance of the covered wire material.
According to the invention, the mode of blending matrix resin by adopting a composite material is adopted, so that the wear resistance, softness, chemical resistance, stress cracking resistance and bending resistance of the SPVC are improved, the problem of poor quality of an envelope material caused by weaker strength of the SPVC is avoided, and secondly, the problem of poor thermal stability and light resistance of the SPVC is solved by adding various auxiliary agents, and meanwhile, the ageing resistance is improved, so that the envelope material has better thermal stability, light resistance and ageing resistance, better flowability, excellent processability and high ignition point, and reaches the standard of flame resistance.
According to fig. 1, the embodiment of the invention also provides a preparation method for preparing the flexible and bending-resistant covered wire material for the plug, which comprises the following specific steps:
(1) Adding matrix resin into a reaction kettle with a stirring device, heating to 115-125 ℃ for hot melting treatment to form a flowing state, adding a composite material and a heat stabilizer, adjusting the temperature to 130-180 ℃, and starting the stirring device for blending treatment for 5-10min to obtain a mixture;
(2) Sequentially adding a filler, a plasticizer, a light stabilizer and a flame retardant into the mixture, adjusting the temperature to 110-130 ℃, dispersing and stirring the material by adopting an ultrasonic dispersing machine, processing for 20-30min, extruding by adopting a double screw extruder, adjusting the temperature to 180-220 ℃, and cooling to obtain the covered wire material.
The flexible and bending-resistant covered wire material for plugs provided by the invention is further described by the following specific examples according to different raw material dosages.
Example 1
(1) And adding 30 parts of matrix resin into a reaction kettle with a stirring device, heating to 115 ℃ for hot melting treatment to form a flowing state, and then adding 20 parts of composite material and 5 parts of heat stabilizer. Adjusting the temperature to 130 ℃, and then starting a stirring device to carry out blending treatment for 5min to prepare a mixture;
wherein the composite material adopts ethylene-vinyl acetate copolymer;
(2) Adding 4 parts of filler, 3 parts of plasticizer, 0.5 part of light stabilizer and 0.5 part of flame retardant into the mixture in sequence, adjusting the temperature to 110 ℃, dispersing and stirring the material by adopting an ultrasonic dispersing machine, processing for 20min, extruding by adopting a double-screw extruder, adjusting the temperature to 180 ℃, and cooling to obtain the covered wire material.
Example 2
(1) And adding 40 parts of matrix resin into a reaction kettle with a stirring device, heating to 120 ℃ for hot melting treatment to form a flowing state, and then adding 15 parts of composite material and 3.5 parts of heat stabilizer. Adjusting the temperature to 150 ℃, and then starting a stirring device to perform blending treatment for 10min to prepare a mixture;
wherein the composite material adopts polyethylene;
(2) Adding 8 parts of filler, 6 parts of plasticizer, 2 parts of light stabilizer and 1 part of flame retardant into the mixture in sequence, adjusting the temperature to 120 ℃, dispersing and stirring the material by adopting an ultrasonic dispersing machine, processing for 30min, extruding by adopting a double-screw extruder, adjusting the temperature to 200 ℃, and cooling to obtain the covered wire material.
Example 3
(1) And adding 50 parts of matrix resin into a reaction kettle with a stirring device, heating to 125 ℃ for hot melting treatment to form a flowing state, and then adding 10 parts of composite material and 2 parts of heat stabilizer. Adjusting the temperature to 180 ℃, and then starting a stirring device to carry out blending treatment for 8min to prepare a mixture;
wherein the composite material adopts polypropylene;
(2) Sequentially adding 12 parts of filler, 9 parts of plasticizer, 3 parts of light stabilizer and 1.5 parts of flame retardant into the mixture, adjusting the temperature to 130 ℃, dispersing and stirring the material by adopting an ultrasonic dispersing machine, processing for 25min, extruding by adopting a double-screw extruder, adjusting the temperature to 220 ℃, and cooling to obtain the covered wire material.
Example 4
(1) Adding 30 parts of matrix resin into a reaction kettle with a stirring device, heating to 115 ℃ for hot melting treatment to form a flowing state, and then adding 10 parts of composite material and 2 parts of heat stabilizer. Adjusting the temperature to 150 ℃, and then starting a stirring device to carry out blending treatment for 8min to prepare a mixture;
wherein the composite material adopts a mixture of polyethylene and ethylene-vinyl acetate copolymer;
(2) Sequentially adding 6 parts of filler, 5 parts of plasticizer, 1 part of light stabilizer and 1 part of flame retardant into the mixture, adjusting the temperature to 115 ℃, dispersing and stirring the material by adopting an ultrasonic dispersing machine, processing for 25min, extruding by adopting a double-screw extruder, adjusting the temperature to 190 ℃, and cooling to obtain the covered wire material.
Example 5
(1) And adding 50 parts of matrix resin into a reaction kettle with a stirring device, heating to 125 ℃ for hot melting treatment to form a flowing state, and then adding 20 parts of composite material and 5 parts of heat stabilizer. Adjusting the temperature to 180 ℃, and then starting a stirring device to carry out blending treatment for 10min to prepare a mixture;
wherein the composite material adopts a mixture of polypropylene and ethylene-vinyl acetate copolymer;
(2) Sequentially adding 10 parts of filler, 8 parts of plasticizer, 2 parts of light stabilizer and 1.5 parts of flame retardant into the mixture, adjusting the temperature to 130 ℃, dispersing and stirring the material by adopting an ultrasonic dispersing machine, processing for 30min, extruding by adopting a double-screw extruder, adjusting the temperature to 220 ℃, and cooling to obtain the covered wire material.
Table 1 amounts (parts) of raw materials used in examples 1 to 5
In order to verify that the plug wrap material prepared in the embodiment of the invention has good flexibility and wear resistance, the plug wrap material provided in the embodiment of the invention, which has good flexibility and bending resistance, is compared and illustrated by the following comparative examples.
Comparative example 1
The comparative example adopts the preparation method of the example 1, the composite material is removed, the amount of matrix resin is 50 parts, and the other raw materials and methods are unchanged, and the specific steps are as follows:
(1) Adding 30 parts of matrix resin into a reaction kettle with a stirring device, heating to 115 ℃ for hot melting treatment to form a flowing state, adding 5 parts of heat stabilizer, adjusting the temperature to 130 ℃, and starting the stirring device for carrying out blending treatment for 5min to obtain a mixture;
wherein the composite material adopts ethylene-vinyl acetate copolymer;
(2) Adding 4 parts of filler, 3 parts of plasticizer, 0.5 part of light stabilizer and 0.5 part of flame retardant into the mixture in sequence, adjusting the temperature to 110 ℃, dispersing and stirring the material by adopting an ultrasonic dispersing machine, processing for 20min, extruding by adopting a double-screw extruder, adjusting the temperature to 180 ℃, and cooling to obtain the covered wire material.
Comparative example 2
The comparative example adopts the preparation method of example 2, the composite material is removed, the amount of matrix resin is 55 parts, the rest raw materials and the method are unchanged, the specific steps are similar to those of comparative example 1, and the comparative example is not repeated.
Comparative example 3
The comparative example adopts the preparation method of example 3, the composite material is removed, the amount of matrix resin is 60 parts, the rest raw materials and the method are unchanged, the specific steps are similar to those of comparative example 1, and the comparative example is not repeated.
Comparative example 4
The comparative example adopts the preparation method of example 4, the composite material is removed, the amount of matrix resin is 40 parts, the rest raw materials and the method are unchanged, the specific steps are similar to those of comparative example 1, and the comparative example is not repeated.
Comparative example 5
The comparative example adopts the preparation method of example 5, the composite material is removed, the amount of matrix resin is 70 parts, the rest raw materials and the method are unchanged, the specific steps are similar to those of comparative example 1, and the comparative example is not repeated.
Table 2 comparative examples 1 to 5 the amounts (parts) of the respective raw materials
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | |
| Matrix resin | 50 | 55 | 60 | 40 | 70 |
| Composite material | / | / | / | / | |
| Heat stabilizer | 5 | 3.5 | 2 | 2 | 5 |
| Filler (B) | 4 | 8 | 12 | 6 | 10 |
| Plasticizer(s) | 3 | 6 | 9 | 5 | 8 |
| Light stabilizers | 0.5 | 2 | 3 | 1 | 2 |
| Flame retardant | 0.5 | 1 | 1.5 | 1 | 1.5 |
Test examples
This test example the envelope materials provided in examples 1-5 and comparative examples 1-5 were subjected to flexibility and abrasion resistance tests;
softness: the test device was formed at 40mm intervals using 6 guide rollers of 28mm diameter, and the envelope material was passed in a zigzag shape between the guide rollers. A force of 2N (F2) was applied to the wire to draw the wire at a speed of 50 mm/min. As soon as the tensile force (F1) reached a certain value, the tensile force was measured in the range of 125mm in length. To determine the resistance of the device, the tensile force (F3) was measured by pulling the aramid yarn through the device at a speed of 50 mm/min. The tensile force (F) required to pass the wire through the test apparatus was determined by "f=f1-F2-F3". The tensile force F is an index of softness showing softness, and the smaller the value, the higher the softness. If the tensile force F is 3.5N or less, the test is qualified, if it is 2.3N or less, the test is good, and if it exceeds 3.5N, the test is failed;
abrasion resistance: the condition of tolerating blade abrasion for more than 300 times is qualified by adopting ISO6722 test standard; setting the intolerance condition as unqualified; the case of withstanding blade wear more than 500 times is considered to be good.
The tensile apparatus was used to specifically test the index tables 3-4.
TABLE 3 detection index for each sample of examples 1-5
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Flexibility of the product | Good quality | Good quality | Good quality | Good quality | Good quality |
| Wear resistance | Good quality | Good quality | Good quality | Good quality | Good quality |
According to Table 3, the envelope materials provided in examples 1-5 of the present invention all have improved flexibility and abrasion resistance;
TABLE 4 detection index for each of comparative examples 1 to 5
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | |
| Flexibility of the product | Failure to pass | Failure to pass | Qualified product | Failure to pass | Qualified product |
| Wear resistance | Failure to pass | Qualified product | Qualified product | Failure to pass | Qualified product |
According to Table 3, the covering materials provided in comparative examples 1 to 5 of the present invention were reduced in flexibility and abrasion resistance to different extents as compared with the covering materials provided in examples 1 to 5, and thus it can be explained that the addition of the composite material in the preparation of the present invention is an important factor for changing the flexibility and abrasion resistance of the covering material.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The wrapping wire material for the plug with good flexibility and bending resistance is characterized by comprising the following raw materials in parts by weight: 30-50 parts of matrix resin, 10-20 parts of composite material, 4-12 parts of filler, 3-9 parts of plasticizer, 2-5 parts of heat stabilizer, 0.5-3 parts of light stabilizer and 0.5-1.5 parts of flame retardant;
the composite material is selected from at least one of polyethylene, polypropylene and ethylene-vinyl acetate copolymer.
2. The flexible bending-resistant covering material for plugs according to claim 1, wherein: the matrix resin is preferably polyvinyl chloride, in particular SPVC.
3. The flexible bending-resistant covering material for plugs according to claim 1, wherein: the filler is selected from one or more of calcium carbonate, talcum powder, hydrated silicon dioxide, glass fiber, clay powder, asbestos and ceramic fiber.
4. The flexible bending-resistant covering material for plugs according to claim 1, wherein: the plasticizer is selected from one or more of cold phthalic acid ester, aliphatic dibasic acid, phosphate ester, polyol ester, epoxy compound and chlorine-containing compound.
5. The flexible bending-resistant covering material for plugs according to claim 1, wherein: the heat stabilizer is at least one selected from a salt-based lead salt heat stabilizer, a metal soap heat stabilizer and an organic tin heat stabilizer.
6. The flexible bending-resistant covering material for plugs according to claim 1, wherein: the light stabilizer is selected from one or more of carbon black, white carbon black, zinc oxide, titanium oxide, salicylates and dibenzools.
7. The flexible bending-resistant covering material for plugs according to claim 1, wherein: the flame retardant is selected from one or more of phosphate, tricresyl phosphate, phosphoric acid tri, nano antimony trioxide, aluminum hydroxide, chlorinated paraffin, hexabromobenzene, decabromodiphenyl ether, tetrachlorophthalic anhydride and tetrabromophthalic anhydride.
8. A method for producing the flexible and bending-resistant sheath material for plugs according to any one of claims 1 to 7, comprising the steps of:
s1, adding matrix resin into a reaction kettle with a stirring device, heating and carrying out hot melting treatment to form a flowing shape, then adding a composite material and a heat stabilizer, and starting the stirring device to carry out blending treatment to obtain a mixture;
s2, sequentially adding the filler, the plasticizer, the light stabilizer and the flame retardant into the mixture, dispersing and stirring the material by adopting an ultrasonic dispersing machine, extruding by adopting a double-screw extruder, and cooling to obtain the covered wire material.
9. The method for preparing the flexible and bending-resistant covered wire material for the plug, which is characterized in that the method is 8, wherein the method comprises the following steps: in the step S1, the hot melting temperature is 115-125 ℃, the blending temperature is 130-180 ℃, and the blending treatment time is 5-10min.
10. The method for preparing the flexible and bending-resistant covered wire material for the plug, which is characterized in that the method is 8, wherein the method comprises the following steps: in the step S2, the mixing temperature is 110-130 ℃, the treatment time is 20-30min, and the extrusion temperature is 180-220 ℃.
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