CN112143124A - Polyvinyl chloride composite cable insulating material and preparation method and application thereof - Google Patents
Polyvinyl chloride composite cable insulating material and preparation method and application thereof Download PDFInfo
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- CN112143124A CN112143124A CN201910573496.4A CN201910573496A CN112143124A CN 112143124 A CN112143124 A CN 112143124A CN 201910573496 A CN201910573496 A CN 201910573496A CN 112143124 A CN112143124 A CN 112143124A
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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
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- 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
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
Abstract
The invention belongs to the technical field of cable insulation materials, and particularly relates to a polyvinyl chloride composite cable insulation material which comprises 100 parts of polyvinyl chloride resin, 15-25 parts of plasticizer, 5-20 parts of filler, 5-10 parts of environment-friendly stabilizer, 4-8 parts of environment-friendly flame retardant, 1-3 parts of silicone master batch and 4-8 parts of pre-crosslinking modifier P95. The polyvinyl chloride composite cable insulating material provided by the invention has the advantages that through the interaction of the components, the appearance of the material is smoother and finer, the surface friction coefficient of the material is reduced, the surface gloss of the material is improved, the surface defects are eliminated, and the wear resistance and the scratch resistance of the polyvinyl chloride composite cable insulating material are greatly improved.
Description
Technical Field
The invention belongs to the technical field of cable insulation materials, and particularly relates to a polyvinyl chloride composite cable insulation material and a preparation method and application thereof.
Background
With the development of the modern automobile industry, the structure is more and more compact, the safety requirement is placed at the head, and the requirement on the insulating material for the wires and cables for the automobile is higher and higher. Because of the particularity of the using position of the electric wire and cable for the automobile, the automobile can not avoid mutual friction between the ground wire and the wire in the operation process, and once the plastic insulating protective sleeve of the electric wire and cable is worn out, the short circuit can be directly caused to cause traffic accident potential. Therefore, the flame retardant coating not only needs to meet the performances of flame retardance, high temperature resistance, low temperature resistance, solvent resistance, oil resistance and the like, but also needs to have the characteristics of ultra-thin wall, high wear resistance and the like. Furthermore, with the development requirements of the modern automobile industry, in order to save the internal assembly space and reduce the weight, many automobile manufacturers require that the insulating layer of the low-voltage automobile wire is reduced from the traditional 0.5-0.8 mm to 0.2-0.3 mm, and under the condition of meeting the relevant technical standards, the ultrathin-wall insulating layer provides higher requirements for scratch and abrasion resistance. QC/T730, ISO6722, JASO D611 and other thin-wall low-voltage automobile wire standards all have clear requirements on scratch and abrasion resistance of the wires.
However, the current insulation materials for wires and cables of automobiles have the problems of short service life, potential safety hazards, poor insulation resistance and the like due to poor friction resistance, poor scratch and abrasion resistance and poor flexibility under the condition of an ultrathin wall, so that the development and application of the insulation materials for wires and cables of automobiles are limited.
Disclosure of Invention
The invention aims to provide a polyvinyl chloride composite cable insulating material, and aims to solve the technical problems that the existing insulating material for an automobile cable is poor in friction resistance, scraping resistance and flexibility under the condition of an ultrathin wall, so that the cable material is short in service life, has potential safety hazards, is poor in insulation resistance and the like.
The invention also aims to provide a preparation method of the polyvinyl chloride composite cable insulating material.
It is a further object of the present invention to provide a cable.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
a polyvinyl chloride composite cable insulation material comprises the following formula components in parts by weight:
preferably, the polymerization degree of the polyvinyl chloride resin is 1000 to 2500.
Preferably, the plasticizer is selected from: at least one of TOTM, UN380, C-810, DOTP, DINP, DIDP, DPHP, TINTM, UN-615, epoxidized soybean oil.
Preferably, the filler is selected from: at least one of nano calcium carbonate with silane-treated surface, calcined kaolin with silane-treated surface and talcum powder with silane-treated surface.
Preferably, the environment-friendly stabilizer is selected from calcium-zinc composite stabilizers.
Preferably, the environmentally friendly flame retardant is selected from: antimony trioxide and/or magnesium hydroxide.
A preparation method of a polyvinyl chloride composite cable insulating material comprises the following steps:
obtaining polyvinyl chloride resin, a plasticizer, an environment-friendly stabilizer, a filler, an environment-friendly flame retardant, a pre-crosslinking agent P95 and silicone master batches in formula amount;
adding the polyvinyl chloride resin, the plasticizer, the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95 and the silicone master batch into a mixer, and mixing to obtain a mixed product;
and transferring the mixed product into a granulator, plasticizing, granulating and cooling to obtain the polyvinyl chloride composite cable insulating material.
Preferably, the step of mixing process comprises:
adding the polyvinyl chloride resin with the formula amount into a mixer, and adding 70-80% of the plasticizer with the formula amount into the mixer in batches during stirring to mix uniformly;
adding the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95 and the silicone master batch in formula amounts, and the rest plasticizer into a mixer, and uniformly mixing to obtain a mixed product.
Preferably, the temperature of the plasticized pellets is 165 ℃ to 175 ℃.
A cable comprises a conductor and an insulating layer coated on the outer surface of the conductor, wherein the insulating layer is made of the polyvinyl chloride composite cable insulating material or the polyvinyl chloride composite cable insulating material prepared by the method.
The polyvinyl chloride composite cable insulation material provided by the invention comprises 100 parts of polyvinyl chloride resin as a main raw material, and also comprises 15-25 parts of plasticizer, 5-20 parts of filler, 5-10 parts of environment-friendly stabilizer, 4-8 parts of environment-friendly flame retardant, 1-3 parts of silicone master batch and 4-8 parts of pre-crosslinking modifier P95. On one hand, the characteristics of the polyvinyl chloride resin material such as flame retardance, flexibility, high and low temperature resistance, solvent resistance and oil resistance are improved by adding the plasticizer, the flame retardant, the stabilizer, the filler and the like in specific parts by weight; on the other hand, the pre-crosslinking modifier P95 with characteristic parts by weight is matched with the silicone master batch for use, so that the compatibility and the easy processing property of the pre-crosslinking modifier P95 and the whole formula system are improved, the appearance of the material is smoother and finer, the surface friction coefficient of the material is reduced, the surface gloss of the material is improved, the surface defect is eliminated, and the wear resistance and the scratch resistance of the polyvinyl chloride composite cable insulating material are greatly improved.
The preparation method of the polyvinyl chloride composite cable insulating material provided by the invention comprises the steps of obtaining the polyvinyl chloride resin, the plasticizer, the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95 and the silicone master batch according to the formula amount, mixing, plasticizing, and granulating to obtain the polyvinyl chloride composite cable insulating material. The preparation method provided by the invention has the advantages of simple process flow, easy operation and realization of batch industrial production.
The cable provided by the invention comprises a central conductor and the polyvinyl chloride composite cable insulating material with excellent flame retardance, flexibility, high and low temperature resistance, solvent oil resistance, wear resistance and scratch resistance, so that the cable provided by the invention also has excellent flame retardance, flexibility, high and low temperature resistance, solvent oil resistance, wear resistance and scratch resistance, is long in service life, and is particularly suitable for being used as an automobile cable.
Detailed Description
In order to make the purpose, technical solution and technical effect of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention is clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive step in connection with the embodiments of the present invention shall fall within the scope of protection of the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The weight of the related components mentioned in the description of the embodiments of the present invention may not only refer to the specific content of each component, but also represent the proportional relationship of the weight among the components, and therefore, the content of the related components is scaled up or down within the scope disclosed in the description of the embodiments of the present invention as long as it is in accordance with the description of the embodiments of the present invention. Specifically, the weight described in the description of the embodiment of the present invention may be a unit of mass known in the chemical industry field, such as μ g, mg, g, and kg.
The embodiment of the invention provides a polyvinyl chloride composite cable insulating material which comprises the following formula components in parts by weight:
the polyvinyl chloride composite cable insulating material provided by the embodiment of the invention comprises 100 parts of polyvinyl chloride resin as a main raw material, and also comprises 15-25 parts of plasticizer, 5-20 parts of filler, 5-10 parts of environment-friendly stabilizer, 4-8 parts of environment-friendly flame retardant, 1-3 parts of silicone master batch and 4-8 parts of pre-crosslinking modifier P95. On one hand, the characteristics of the polyvinyl chloride resin material such as flame retardance, flexibility, high and low temperature resistance, solvent resistance and oil resistance are improved by adding the plasticizer, the flame retardant, the stabilizer, the filler and the like in specific parts by weight; on the other hand, the pre-crosslinking modifier P95 with characteristic parts by weight is matched with the silicone master batch for use, so that the compatibility and the easy processing property of the pre-crosslinking modifier P95 and the whole formula system are improved, the appearance of the material is smoother and finer, the surface friction coefficient of the material is reduced, the surface gloss of the material is improved, the surface defect is eliminated, and the wear resistance and the scratch resistance of the polyvinyl chloride composite cable insulating material are greatly improved.
Specifically, the silicone master batch adopted in the embodiment of the invention is silicone diluted by siloxane and silicon dioxide, and 50-30% of polyolefin and other auxiliary agents are added to obtain the silicone master batch. The silicone master batch has higher siloxane content and molecular weight, can effectively reduce the internal stress of a mixed material, reduce warpage, reduce welding marks and reduce the fraction defective; the compatibility of the glass fiber and the plastic is improved, the fiber breakage is reduced, and the floating phenomenon is improved; the scratch resistance has long-term effect and durability, and can meet the stricter wear resistance of the composite material. And the silicone master batch can effectively improve the compatibility among all the components of the material. The pre-crosslinking modifier P95 is P95 produced by French Ono Law company, consists of butyl acrylate, styrene and acrylonitrile, contains functional hydroxyl groups, has very excellent compatibility, can improve the overall processability of the material, solves the problem that the polyvinyl chloride resin is difficult to process and form, can improve the appearance of the material, is smoother and finer, can increase the ageing resistance and the short-time ultrahigh temperature resistance of the material, and greatly improves the wear resistance of the material. According to the embodiment of the invention, 4-8 parts of P95 and 1-3 parts of silicone master batches are matched for use, so that the compatibility and the easy processing property of the P95 and the whole formula system are improved, and the wear resistance and the scratch resistance of a cable material are improved; reducing the surface friction coefficient; the surface gloss is improved, the surface defects are eliminated, and the appearance of the material is smoother and finer. If the adding proportion of the silicone master batch is higher than 3 parts, the compatibility of the silicone master batch and components such as P95 in the whole formula is poor, the synergistic effect of the silicone master batch and the components is reduced, the precipitation risk of the silicone master batch is increased, and the processing technology of the material is influenced. A large number of experimental researches show that when the addition proportion of the silicone master batch is 1-3 parts, the silicone master batch is matched with other raw material components, so that the silicone master batch has the best synergistic effect on the wear resistance of the insulating material. 4-8 parts of pre-crosslinking agent P95 and 1-3 parts of silicone master batch are matched for use, and the best synergistic effect is achieved on the wear resistance and the like of the insulating material. If the addition proportion of the pre-crosslinking agent P95 is too small, the coordination effect between the pre-crosslinking agent P95 and the silicone master batch is not obvious; after the addition proportion of the pre-crosslinking agent P95 reaches 8 parts, experimental research shows that the overall performance of the insulating material is stable, and if the pre-crosslinking agent P95 is added in an excessive proportion, the material cost is greatly increased, and the material is not favorable for economy and environmental protection.
In a preferred embodiment, the polymerization degree of the polyvinyl chloride resin is 1000 to 2500. The polyvinyl chloride resin with the polymerization degree of 1000-2500 adopted in the embodiment of the invention not only ensures the processing performance of the polyvinyl chloride resin, but also ensures the scraping and abrasion resistance and mechanical force performance of the composite cable insulating material. If the polymerization degree of the polyvinyl chloride resin is lower than 1000, the mechanical property and the wear resistance of the polyvinyl chloride resin are poor; if the polymerization degree of the polyvinyl chloride resin is higher than 2500, the polyvinyl chloride resin is difficult to process.
As a more preferable example, the polymerization degree of the polyvinyl chloride resin is 1000, or 1300.
As a preferred embodiment, the plasticizer is selected from: at least one of TOTM, UN380, C-810, DOTP, DINP, DIDP, DPHP, TINTM, UN-615, epoxidized soybean oil. The plasticizer adopted by the embodiment of the invention can effectively adjust and improve the flexibility of the material, thereby improving the characteristics of the polyvinyl chloride composite cable insulating material such as flexibility, weather resistance, durability and the like. The weight fraction of the plasticizer added in the embodiment of the invention is also a key factor influencing the flexibility, weather resistance, durability and other properties of the material, and 15-25 parts of the plasticizer enables the composite cable insulating material to have the most appropriate hardness, and the hardness is 85-95 HRA, so that the mechanical property of the material can be improved, and the material has better scratch and abrasion resistance. Specifically, the TOTM trioctyl trimellitate has the advantages of a polyester plasticizer and a monomer plasticizer, and the plasticizing efficiency and the processing performance are similar to those of a phthalate plasticizer; the compatibility, plasticizing performance and low-temperature performance of the material are better than those of polyester plasticizers, the material can be used for producing 105 ℃ grade heat-resistant wire and cable materials, has outstanding temperature resistance and durability, and meets the requirements of high temperature and low temperature. C-810 is C-810 manufactured by ADK of Japan, and UN380 is UN380 manufactured by Taiwan Union. TINTM is a trimellitate plasticizer, is a plasticizer produced by Korea Aijing company, has low volatility, low migration property and good electronic resistance, has processability, aging property and heat resistance, and is an excellent plasticizer with high heat resistance and weather resistance. DOTP is dioctyl terephthalate plasticizer, and has the excellent characteristics of heat resistance, cold resistance, difficult volatilization, extraction resistance, good flexibility, good electrical insulation performance and the like. The DINP plasticizer has stronger ageing resistance and can prolong the service life of the product; plastisols are easier to coat, spray and impregnate; the durability is higher, and the outdoor low temperature resistance is higher; is compatible with the auxiliary plasticizer, thereby further reducing the cost; the volatility is low, emission in the processing process is reduced, and the working condition is improved; lower density, less energy consumption and higher extrusion throughput. The DIDP plasticizer has excellent durability, strong ageing resistance, low density, high plasticizing efficiency and low volatility, and keeps flexibility under low temperature. The plasticizer adopted by the embodiment of the invention has excellent performance and wide adaptability, and can effectively improve the characteristics of the polyvinyl chloride composite cable insulating material such as flexibility, weather resistance, durability and the like. The DPHP phthalic acid di (2-propyl heptyl) ester plasticizer has excellent anti-fogging performance, better volume cost, good thermal aging performance, difficult precipitation, oil bleeding and migration, excellent weather resistance, higher thermoplastic processing products, stable viscosity of a plastisol and other excellent characteristics.
As a preferred embodiment, the filler is selected from: at least one of nano calcium carbonate with silane-treated surface, calcined kaolin with silane-treated surface and talcum powder with silane-treated surface. The nano calcium carbonate, the calcined kaolin or the talcum powder filler, the polyvinyl chloride resin, the stabilizer and other raw material components which are subjected to silane modification on the surfaces have better adsorption and combination effects, so that the polyvinyl chloride composite cable insulating material has a better reinforcing effect, the surface performance of the material can be effectively improved, and the cost of the composite material is reduced.
The environment-friendly flame retardant is selected from: antimony trioxide and/or magnesium hydroxide. The antimony trioxide flame retardant adopted by the embodiment of the invention is a polyvinyl chloride composite material flame retardant with excellent performance, and has very excellent flame retardant effect, stability and strong universality. In addition, the magnesium hydroxide filled flame retardant releases bound water when decomposed by heat, absorbs a large amount of latent heat to lower the surface temperature of the synthetic material filled with the flame retardant in the flame, and has the effects of inhibiting the decomposition of the polymer and cooling the generated combustible gas. The antimony trioxide and/or magnesium hydroxide flame retardant adopted by the invention effectively ensures the flame retardant performance of the polyvinyl chloride composite cable insulating material.
The polyvinyl chloride composite cable insulating material provided by the embodiment of the invention can be prepared by the following method.
The embodiment of the invention also provides a preparation method of the polyvinyl chloride composite cable insulating material, which comprises the following steps:
s10, obtaining polyvinyl chloride resin, a plasticizer, an environment-friendly stabilizer, a filler, an environment-friendly flame retardant, a pre-crosslinking agent P95 and silicone master batches in a formula amount;
s20, adding the polyvinyl chloride resin, the plasticizer, the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95 and the silicone master batch into a mixer, and mixing to obtain a mixed product;
and S30, transferring the mixed product into a granulator, plasticizing, granulating, and cooling to obtain the polyvinyl chloride composite cable insulating material.
According to the preparation method of the polyvinyl chloride composite cable insulating material provided by the embodiment of the invention, the polyvinyl chloride resin, the plasticizer, the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95 and the silicone master batch in formula amount are obtained, and then the polyvinyl chloride composite cable insulating material can be obtained through mixing treatment and plasticizing and grain-sized cutting treatment. The preparation method provided by the embodiment of the invention has the advantages of simple process flow, easy operation and capability of realizing batch industrial production.
Specifically, in step S10, the polyvinyl chloride resin, the plasticizer, the environmental stabilizer, the filler, the environmental flame retardant, the pre-crosslinking agent P95, and the silicone masterbatch are obtained according to the formula amounts. The effects of the raw material components of the formula amount obtained in the embodiment of the present invention are discussed in detail in the foregoing, and are not described herein again.
Specifically, in step S20, the polyvinyl chloride resin, the plasticizer, the environmental protection stabilizer, the filler, the environmental protection flame retardant, the pre-crosslinking agent P95, and the silicone masterbatch are added to a mixer and mixed to obtain a mixed product. According to the embodiment of the invention, the raw material components are added into the mixer and mixed to obtain the mixed product, so that the operation is simple, the flexibility is high, and the mass production can be realized.
As a preferred embodiment, the step of mixing process comprises:
s21, adding the polyvinyl chloride resin with the formula amount into a mixer, and adding 70-80% of the plasticizer with the formula amount into the mixer in batches during stirring to mix uniformly;
s22, adding the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95, the silicone master batch and the rest plasticizer into a mixer according to the formula amount, and uniformly mixing to obtain a mixed product.
According to the embodiment of the invention, 70-80% of the plasticizer in the formula amount is uniformly mixed with the polyvinyl chloride resin to ensure that the polyvinyl chloride resin fully and uniformly adsorbs the plasticizer, and then the rest other raw material components are added and uniformly mixed to obtain a mixed product. According to the embodiment of the invention, a part of the plasticizer and the resin are premixed, and then other raw material components are added for mixing treatment, so that the raw material components are uniformly mixed together to form a uniform polyvinyl chloride composite cable insulating material mixture, and the performances of the insulating material are balanced and stable.
As a preferred embodiment, the temperature of the plasticized pellets is 165 ℃ to 175 ℃. According to the embodiment of the invention, the plasticizing and granulating temperature of the polyvinyl chloride composite cable insulating material is 165-175 ℃, so that the mixed raw material components have the best processing characteristics, the material is uniformly plasticized and is convenient to process, and the performance of each raw material in the mixed product can be fully exerted. If the temperature is too high, the mixed product is decomposed and aged in the equipment granulation process, and the mechanical property of the material is influenced; if the temperature is too low, the plasticization of the mixed product is not uniform, the subsequent processing is not good, the mechanical property of the material is also affected, and the product can not meet the standard requirement.
The embodiment of the invention also provides a cable, which comprises a conductor and an insulating layer coated on the outer surface of the conductor, wherein the insulating layer is made of the polyvinyl chloride composite cable insulating material or the polyvinyl chloride composite cable insulating material prepared by the method.
The cable provided by the embodiment of the invention comprises a central conductor and the polyvinyl chloride composite cable insulating material with excellent flame retardance, flexibility, high and low temperature resistance, solvent oil resistance, wear resistance and scratch resistance, so that the cable provided by the embodiment of the invention also has excellent flame retardance, flexibility, high and low temperature resistance, solvent oil resistance, wear resistance and scratch resistance, is long in service life and is particularly suitable for being used as an automobile cable.
In order to make the above implementation details and operations of the present invention clearly understood by those skilled in the art and to make the progress of the polyvinyl chloride composite cable insulation material and the preparation method thereof according to the embodiment of the present invention remarkably manifest, the above technical solution is exemplified by a plurality of embodiments as follows.
Example 1
A polyvinyl chloride composite cable insulation material comprises the following raw material components in parts by weight:
wherein the polyvinyl chloride resin is polyvinyl chloride resin with the polymerization degree of 1300; the plasticizer is TOTM or TINTM; the filler is nano calcium carbonate with silane treated surface; the stabilizer is calcium-zinc composite stabilizer.
The polyvinyl chloride composite cable insulating material is prepared by the following steps:
s10, obtaining the polyvinyl chloride resin, the plasticizer, the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95 and the silicone master batch according to the formula amount;
s20, adding the polyvinyl chloride resin with the formula amount into a mixer, and adding 70-80% of the plasticizer with the formula amount into the mixer in batches during stirring to mix uniformly;
s30, adding the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95, the silicone master batch and the rest plasticizer into a mixer according to the formula amount, and uniformly mixing to obtain a mixed product.
And S40, transferring the mixed product into a granulator, plasticizing, granulating and cooling at the temperature of 165-175 ℃ to obtain the polyvinyl chloride composite cable insulating material.
Comparative example 1
A cable insulation material comprises the following raw material components in parts by weight:
the specific components selected were the same as in example 1.
A cable composite of this comparative example was prepared according to the preparation method of example 1.
Comparative example 2
A cable insulation material comprises the following raw material components in parts by weight:
the specific components selected were the same as in example 1.
A cable composite of this comparative example was prepared according to the preparation method of example 1.
Further, in order to verify the advancement of the polyvinyl chloride composite cable insulation material according to the example of the present invention, the polyvinyl chloride composite cable insulation material according to the example 1 and the cable insulation materials according to the comparative examples 1 and 2 were subjected to a scratch and abrasion resistance test experiment.
The abrasion resistance, elongation, tensile strength, insulation resistance and the like of the polyvinyl chloride composite cable insulation materials prepared in the above examples 1, 1 and 2 were tested according to the requirements of the ISO6722 abrasion resistance test, and the test results are shown in the following table 1:
TABLE 1
From the experimental results, it can be seen that the number of times of abrasion resistance of the polyvinyl chloride composite cable insulation material prepared in example 1 is more than 3 times of the number of times of abrasion resistance of the cable insulation materials prepared in comparative examples 1 and 2. The embodiment of the invention shows that after the pre-crosslinking modifier P95 and the silicone master batch are matched according to the specific weight fraction, the scratch and abrasion resistance of the cable insulation material is greatly improved. In addition, the elongation, tensile strength and insulation resistance of the polyvinyl chloride composite cable insulation material prepared in the embodiment 1 are higher than those of the cable insulation materials prepared in the comparative examples 1 and 2, and the results show that after the pre-crosslinking modifier P95, the silicone master batch and other raw material components are matched according to specific weight fractions, the flexibility and the insulation resistance of the cable insulation material are effectively improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The polyvinyl chloride composite cable insulating material is characterized by comprising the following formula components in parts by weight:
2. the polyvinyl chloride composite cable insulation material of claim 1, wherein the degree of polymerization of the polyvinyl chloride resin is 1000 to 2500.
3. The polyvinyl chloride composite cable insulation of claim 1 or 2, wherein the plasticizer is selected from the group consisting of: at least one of TOTM, UN380, C-810, DOTP, DINP, DIDP, UN-615, DPHP, TINTM, epoxidized soybean oil.
4. The polyvinyl chloride composite cable insulation of claim 3, wherein the filler is selected from the group consisting of: at least one of nano calcium carbonate with silane-treated surface, calcined kaolin with silane-treated surface and talcum powder with silane-treated surface.
5. The polyvinyl chloride composite cable insulation of claim 1 or 4, wherein the environmental stabilizer is selected from calcium zinc composite stabilizers.
6. The polyvinyl chloride composite cable insulation of claim 5, wherein the environmentally friendly flame retardant is selected from the group consisting of: antimony trioxide and/or magnesium hydroxide.
7. A preparation method of a polyvinyl chloride composite cable insulating material is characterized by comprising the following steps:
obtaining polyvinyl chloride resin, a plasticizer, an environment-friendly stabilizer, a filler, an environment-friendly flame retardant, a pre-crosslinking agent P95 and silicone master batches in formula amount;
adding the polyvinyl chloride resin, the plasticizer, the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95 and the silicone master batch into a mixer, and mixing to obtain a mixed product;
and transferring the mixed product into a granulator, plasticizing, granulating and cooling to obtain the polyvinyl chloride composite cable insulating material.
8. The method for preparing a polyvinyl chloride composite cable insulation material according to claim 7, wherein the mixing process comprises:
adding the polyvinyl chloride resin with the formula amount into a mixer, and adding 70-80% of the plasticizer with the formula amount into the mixer in batches during stirring to mix uniformly;
adding the environment-friendly stabilizer, the filler, the environment-friendly flame retardant, the pre-crosslinking agent P95 and the silicone master batch in formula amounts, and the rest plasticizer into a mixer, and uniformly mixing to obtain a mixed product.
9. The method for preparing polyvinyl chloride composite cable insulation according to claim 7 or 8, wherein the temperature of the plasticized pellets is 165 ℃ to 175 ℃.
10. A cable, which is characterized by comprising a conductor and an insulating layer coated on the outer surface of the conductor, wherein the insulating layer is made of the polyvinyl chloride composite cable insulating material according to any one of claims 1 to 6 or the polyvinyl chloride composite cable insulating material prepared by the method according to any one of claims 7 to 9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114276630A (en) * | 2021-12-13 | 2022-04-05 | 乐庭电线工业（惠州）有限公司 | Semi-rigid polyvinyl chloride flame-retardant insulating sizing material, preparation method thereof and cable |
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