阅读说明：本技术 一种具有长效耐热水性能的pvc线缆及应用 (PVC cable with long-acting hot water resistance and application ) 是由 石刘建 薄录红 曹风雷 李佳龙 范平涛 于 2021-09-02 设计创作，主要内容包括：一种具有长效耐热水性能的PVC线缆及应用,由聚合度为1300的PVC粉料、疏水性填充剂、增塑剂TOTM、氧化聚乙烯蜡、三氧化二锑、钙锌复合稳定剂、CPE-135A组成,本发明的主料和辅料中均为不含有亲水基团的材料,使材料整体更耐热水浸泡,不易肿胀,钙锌复合稳定剂为采用偶连剂处理过的水滑石及β二酮钙锌稳定剂,水份不能进入,其填充剂采用不亲水的二氧化硅,也增强了疏水性能,本发明PVC线缆可以在100℃热水中泡1000小时,电线不肿胀,耐电压2KV/1分钟,耐压不击穿。(A PVC cable with long-acting hot water resistance and application thereof are disclosed, which comprises a PVC powder with a polymerization degree of 1300, a hydrophobic filler, a plasticizer TOTM, oxidized polyethylene wax, antimony trioxide, a calcium-zinc composite stabilizer and CPE-135A, wherein the main material and the auxiliary material of the PVC cable are all materials without hydrophilic groups, so that the whole material is more resistant to hot water immersion and is not easy to swell, the calcium-zinc composite stabilizer is a hydrotalcite and beta diketone calcium-zinc stabilizer treated by a coupling agent, water cannot enter, the filler adopts non-hydrophilic silica, and the hydrophobic property is also enhanced.)

1. The PVC cable with the long-acting hot water resistance is characterized by comprising a main material and an auxiliary material, wherein the main material and the auxiliary material are both materials without hydrophilic groups, the main material comprises PVC powder, and the PVC powder is PVC powder with the polymerization degree of 1300.

2. The PVC cable with long-term hot water resistance according to claim 1, wherein the PVC cable with long-term hot water resistance consists of the following components: the PVC powder material with the polymerization degree of 1300, hydrophobic filler, plasticizer TOTM, oxidized polyethylene wax, antimony trioxide, calcium-zinc composite stabilizer and CPE-135A.

3. The PVC cable with long-acting hot water resistance according to claim 2, wherein the calcium-zinc composite stabilizer is hydrotalcite and beta diketone calcium-zinc stabilizer treated by coupling agent, and the filler is silica.

4. The PVC cable with long-acting hot water resistance according to claim 2, wherein the hydrophobic filler is talc or ceramic beads.

5. The PVC cable with long-term hot water resistance according to claim 2, wherein the PVC cable with long-term hot water resistance comprises the following components in parts by weight: 95-105 parts of PVC powder with the polymerization degree of 1300, 10-20 parts of hydrophobic filler, 37-43 parts of plasticizer TOTM, 0.1-0.5 part of oxidized polyethylene wax, 2-6 parts of antimony trioxide, 2-7 parts of calcium-zinc composite stabilizer and 4-8 parts of CPE-135A.

6. The PVC cable with long-term hot water resistance according to claim 5, wherein the PVC cable with long-term hot water resistance comprises the following components in parts by weight: 100 parts of PVC powder with the polymerization degree of 1300, 10-20 parts of hydrophobic filler talcum powder, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of calcium-zinc composite stabilizer and 6 parts of CPE-135A.

7. The PVC cable with long-term hot water resistance according to claim 5, wherein the PVC cable with long-term hot water resistance comprises the following components in parts by weight: 100 parts of PVC powder with the polymerization degree of 1300, 10-20 parts of hydrophobic filler ceramic microspheres, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of calcium-zinc composite stabilizer and 6 parts of CPE-135A.

8. Use of the PVC cable having long-term hot water resistance of claim 1 for the preparation of a cable for sensors.

Technical Field

The invention relates to the technical field of PVC cables, in particular to a PVC cable with long-acting hot water resistance and application thereof.

Background

The PVC cable material is particles prepared by taking polyvinyl chloride as basic resin, adding plasticizers such as a stabilizer, dioctyl phthalate, diisodecyl phthalate, dioctyl terephthalate, trioctyl trimellitate and the like, inorganic fillers such as calcium carbonate and the like, additives such as an assistant, a lubricant and the like, and mixing, kneading and extruding.

However, the existing electric appliance sensors such as air conditioners and refrigerators are in a sealed high-temperature high-humidity environment for a long time, and voltage is generated when an electric appliance operates, so that wires of the electric appliance sensors such as the air conditioners and the refrigerators need to be detected under the condition of water at 100 ℃ for 1000 hours through simulated tightening, and the existing common PVC cable material cannot withstand long-term soaking in hot water at a high temperature of 100 ℃, so that the technical defects that the cable sheath is swollen due to long-term high-temperature hot water soaking, and the cable is broken down due to voltage are existed.

Disclosure of Invention

In order to solve the technical defects in the prior art, the invention provides a PVC cable with long-acting hot water resistance and application thereof.

The technical solution adopted by the invention is as follows: the PVC cable with the long-acting hot water resistance consists of a main material and an auxiliary material, wherein the main material and the auxiliary material are both materials without hydrophilic groups, the main material comprises PVC powder, and the PVC powder is PVC powder with the polymerization degree of 1300.

The PVC cable with long-acting hot water resistance consists of the following components: the PVC powder material with the polymerization degree of 1300, hydrophobic filler, plasticizer TOTM, oxidized polyethylene wax, antimony trioxide, calcium-zinc composite stabilizer and CPE-135A.

The hydrophobic filler is talcum powder or ceramic microspheres.

Wherein the main component of the talcum powder is hydrous magnesium silicate with molecular formula of Mg3[ Si4O10] (OH) 2. Talc belongs to the monoclinic system. The crystal is in a pseudo-hexagonal or rhombohedral shape and is occasionally seen. Usually in the form of a dense mass, leaf, radial, fibrous mass. Colorless and transparent or white, but light green, light yellow, light brown and even light red due to containing a small amount of impurities; the cleavage surface is pearl-like. The hardness is 1, and the specific gravity is 2.7-2.8. The talc has excellent physical and chemical properties such as lubricity, fire resistance, acid resistance, insulation properties, high melting point, chemical inertness, good covering power, softness, good gloss, strong adsorption power and the like, and has a tendency to be easily broken into flakes and a special lubricating property because the crystal structure of the talc is layered.

The ceramic micro-bead is a novel material which has wide application and special performance and is developed in recent years. The product is prepared from borosilicate raw materials by high-tech processing, the granularity is 10-250 microns, and the wall thickness is 1-2 microns. The product has the advantages of light weight, low heat conduction, higher strength, good chemical stability and the like.

The TOTM plasticizer is mainly used for producing 105-degree-centigrade heat-resistant wire and cable materials and other products requiring heat resistance and durability, such as plates, sheets, gaskets and the like, and is suitable for various plastics, such as polyvinyl chloride, vinyl chloride copolymer, cellulose nitrate, ethyl cellulose butyrate, polymethyl methacrylate and the like. Can be used for heat-resistant and durable products such as heat-resistant electric wire and cable materials, plates, sheet gaskets and the like. The advantages of polyester plasticizer and monomer plasticizer are achieved, and the plasticizing efficiency and the processing performance are similar to those of phthalate plasticizer; compared with polyester plasticizer, the compatibility, plasticizing performance and low-temperature performance are better, and the electrical performance is excellent.

Oxidized polyethylene wax is excellent novel polar wax, and has certain amount of carbonyl and hydroxyl in the molecular chain, so that the compatibility with stuffing, pigment and polar resin is obviously improved. The wetting property and the dispersibility of the polyurethane resin in a polar system are superior to those of polyethylene wax, and the polyurethane resin also has coupling property, and the performance of the polyurethane resin is equivalent to that of American Honeywell A-C wax. The OPE wax also called OPE wax, the OPE wax has the special properties of low viscosity, high softening point, good hardness and the like, has no toxicity, good thermal stability, low high-temperature volatility, excellent dispersibility for fillers and pigments, excellent external lubricity, strong internal lubrication effect and coupling effect, can improve the production efficiency of plastic processing, reduce the production cost, has good compatibility with polyolefin resin and the like, has good moisture resistance at normal temperature, strong chemical resistance and excellent electrical property, can improve the appearance of finished products, and is an ideal product for replacing Mongolian wax, Sichuan wax, liquid paraffin, microcrystalline paraffin, natural denier paraffin, polyethylene wax and the like.

Antimony trioxide is an inorganic compound of the formula Sb2O 3. The natural product is named as antimony white, commonly named as antimony white and white crystalline powder. Melting point 655 deg.C. The boiling point is 1550 ℃. The preparation method has two methods, namely a dry method and a wet method, is used for plastics, and has a strong flame retardant effect.

Calcium zinc stabilizers are generally classified into: solid calcium zinc stabilizer and liquid calcium zinc stabilizer. The calcium-zinc stabilizer is synthesized by using calcium salt, zinc salt, lubricant, antioxidant and the like as main components through a special compounding process. It can replace toxic stabilizer of lead-cadmium salt and organic tin, and has excellent heat stability, light stability, transparency and coloring power. The practice proves that the PVC resin product has good processing performance, the thermal stability is equivalent to that of a lead salt stabilizer, and the PVC resin product is a good nontoxic stabilizer. The calcium zinc stabilizer is mainly white powder, sheet and paste in appearance. The powdery calcium zinc stabilizer is used as a nontoxic PVC stabilizer which is most widely applied and is commonly used for food packaging, medical instruments, wire and cable materials and the like. At present, PVC calcium zinc stabilizer for hard pipes appears in China. The powdery calcium zinc stabilizer has the characteristics of inferior thermal stability to lead salt, certain lubricity, poor transparency, easy blooming and the like. In order to improve the stability and transparency, antioxidants such as hindered phenols, polyols, phosphites and β -diketones are often added. The two major systems of the calcium-zinc stabilizer are mainly divided into a hydrotalcite system and a zeolite system.

Layered Double Hydroxides (LDHs) are a general term for Hydrotalcite (HT) and Hydrotalcite-Like Compounds (HTLCs), and a series of supramolecular materials intercalated and assembled from these Compounds are called Hydrotalcite-Like intercalation materials (LDHs). The LDHs is heated to a certain temperature for decomposition, and the thermal decomposition process comprises the steps of interlayer water removal, carbonate ion removal, laminate hydroxyl group dehydration and the like. When the temperature in the air is lower than 200 ℃, only interlayer moisture is lost, the structure is not influenced, when the temperature is heated to 250-450 ℃, more moisture is lost, CO2 is generated, when the temperature is heated to 450-500 ℃, CO 32-disappears, the CO is completely converted into CO2, and the bimetal composite oxide (LDO) is generated. In the heating process, the ordered layered structure of the LDHs is destroyed, the surface area is increased, and the pore volume is increased. When the heating temperature exceeds 600 ℃, the metal oxide formed after decomposition starts to sinter, resulting in a decrease in surface area and pore volume, usually forming spinel MgAl2O4 and MgO.

Beta-diketones are mainly used as thermostabilizers for polyvinyl chloride products, when used in conjunction with primary stabilizers Ca/Zn or Ba/Zn, they reduce the early coloration and improve the later heat resistance and transparency of the products, and are commonly used in mineral water bottles and other transparent polyvinyl chloride sheets, bottle materials, film products, etc.

Chlorinated Polyethylene (CPE) is a saturated high polymer material, is white powder in appearance, is nontoxic and tasteless, has excellent weather resistance, ozone resistance, chemical resistance and aging resistance, and has good oil resistance, flame retardance and coloring performance. The product has good toughness (still has flexibility at minus 30 ℃), good compatibility with other high polymer materials, high decomposition temperature, and HCl generated by decomposition, and can catalyze dechlorination reaction of CPE.

Chlorinated polyethylene is a high molecular material prepared from High Density Polyethylene (HDPE) through chlorination substitution reaction. According to the structure and application, chlorinated polyethylene can be divided into two categories, namely resin type Chlorinated Polyethylene (CPE) and elastomer type chlorinated polyethylene (CM). The thermoplastic resin can be used alone, or can be used in combination with a resin such as polyvinyl chloride (PVC), Polyethylene (PE), polypropylene (PP), Polystyrene (PS), ABS, or the like, or even Polyurethane (PU). The chlorinated polyethylene resin is a novel synthetic material and has a series of excellent properties. It is an excellent impact modifier for PVC plastics, and is a synthetic rubber with good comprehensive performance, and has very wide application fields, and is widely used for products such as cables, electric wires, rubber tubes, adhesive tapes, rubber and plastic products, sealing materials, flame-retardant conveying belts, waterproof coiled materials, films, various profiled bars and the like. CPE can be blended with polypropylene, high-low pressure polyethylene, ABS and the like, and the flame retardant property, the ageing resistance and the printing performance of products of the plastics are improved.

The calcium-zinc composite stabilizer is a hydrotalcite and beta diketone calcium-zinc stabilizer treated by a coupling agent, and a filler of the calcium-zinc composite stabilizer is silicon dioxide.

The PVC cable with the long-acting hot water resistance comprises the following components in parts by mass: 95-105 parts of PVC powder with the polymerization degree of 1300, 10-20 parts of hydrophobic filler, 37-43 parts of plasticizer TOTM, 0.1-0.5 part of oxidized polyethylene wax, 2-6 parts of antimony trioxide, 2-7 parts of calcium-zinc composite stabilizer and 4-8 parts of CPE-135A.

The PVC cable with the long-acting hot water resistance comprises the following components in parts by mass: 100 parts of PVC powder with the polymerization degree of 1300, 10-20 parts of hydrophobic filler talcum powder, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of calcium-zinc composite stabilizer and 6 parts of CPE-135A.

The PVC cable with the long-acting hot water resistance comprises the following components in parts by mass: 100 parts of PVC powder with the polymerization degree of 1300, 10-20 parts of hydrophobic filler ceramic microspheres, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of calcium-zinc composite stabilizer and 6 parts of CPE-135A.

The PVC cable with long-acting hot water resistance is applied to preparing cables for sensors.

The invention has the beneficial effects that: the invention provides a PVC cable with long-acting hot water resistance and application, which consists of a PVC powder material with the polymerization degree of 1300, a hydrophobic filler, a plasticizer TOTM, oxidized polyethylene wax, antimony trioxide, a calcium-zinc composite stabilizer and CPE-135A, wherein the main material and auxiliary materials of the PVC cable are materials without hydrophilic groups, so that the whole material is more resistant to hot water soaking and difficult to swell, the calcium-zinc composite stabilizer is a hydrotalcite and beta diketone calcium-zinc stabilizer treated by a coupling agent, water cannot enter, the filler adopts non-hydrophilic silicon dioxide, and the hydrophobic property is also enhanced.

The invention adopts the hydrophobic filler to replace the existing hydrophilic calcium carbonate filler, and the plasticizer and the heat stabilizer both adopt hydrophobic raw materials, thus proving the hot water resistance of the product in hot water.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Example 1

The PVC cable with the long-acting hot water resistance comprises the following components in parts by mass: 100 parts of PVC powder with the polymerization degree of 1300, 10 parts of hydrophobic filler talcum powder, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of CZ3187 calcium-zinc composite stabilizer and 6 parts of CPE-135A.

The preparation method comprises the following steps of weighing the following raw materials, by weight, 100 parts of PVC powder with the polymerization degree of 1300, 10 parts of filler talcum powder, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of CZ3187 calcium-zinc composite stabilizer and 6 parts of CPE-135A, adding the PVC powder, the filler talcum powder, the oxidized polyethylene wax and the CZ3187 calcium-zinc composite stabilizer into a high-speed kneader, mixing for 0.5min under low-speed operation, adding the plasticizer TOTM, rotating at a high speed from a low speed, adding the antimony trioxide at the temperature of 115 ℃, stirring for 20min under the temperature of 120 ℃ to obtain a mixture, and adding the mixture into a double-screw extruder to extrude and granulate.

Example 2

The PVC cable with the long-acting hot water resistance comprises the following components in parts by mass: 95 parts of PVC powder with the polymerization degree of 1300, 20 parts of hydrophobic filler talcum powder, 40 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 7 parts of CZ3187 calcium-zinc composite stabilizer and 4 parts of CPE-135A.

The preparation method comprises the following steps of weighing the following raw materials, by weight, 95 parts of PVC powder with the polymerization degree of 1300, 20 parts of filler talcum powder, 40 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 7 parts of CZ3187 calcium-zinc composite stabilizer and 4 parts of CPE-135A, adding the PVC powder, the filler talcum powder, the oxidized polyethylene wax and the CZ3187 calcium-zinc composite stabilizer into a high-speed kneader, mixing for 0.5min under low-speed operation, adding the plasticizer TOTM, rotating at a high speed from a low speed, adding the antimony trioxide at the temperature of 115 ℃, stirring for 20min under the temperature of 120 ℃ to obtain a mixture, and adding the mixture into a double-screw extruder to extrude and granulate.

Example 3

The PVC cable with the long-acting hot water resistance comprises the following components in parts by mass: 100 parts of PVC powder with the polymerization degree of 1300, 10 parts of hydrophobic filler ceramic microbeads, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of CZ3187 calcium-zinc composite stabilizer and 6 parts of CPE-135A.

The preparation method comprises the following steps of weighing the following raw materials, by weight, 100 parts of PVC powder with the polymerization degree of 1300, 10 parts of filler ceramic microspheres, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of CZ3187 calcium-zinc composite stabilizer and 6 parts of CPE-135A, adding the PVC powder, the filler ceramic microspheres, the oxidized polyethylene wax and the CZ3187 calcium-zinc composite stabilizer into a high-speed kneader, mixing for 0.5min under low-speed operation, adding the plasticizer TOTM, rotating from low speed to high speed, adding the antimony trioxide at the temperature of 115 ℃, stirring for 20min at the temperature of 120 ℃ to obtain a mixture, and adding the mixture into a double-screw extruder for extrusion and granulation.

Example 4

The PVC cable with the long-acting hot water resistance comprises the following components in parts by mass: 100 parts of PVC powder with the polymerization degree of 1300, 20 parts of hydrophobic ceramic microbeads, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of CZ3187 calcium-zinc composite stabilizer and 6 parts of CPE-135A.

The preparation method comprises the following steps of weighing the following raw materials, by weight, 100 parts of PVC powder with the polymerization degree of 1300, 20 parts of filler ceramic microspheres, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of CZ3187 calcium-zinc composite stabilizer and 6 parts of CPE-135A, adding the PVC powder, the filler ceramic microspheres, the oxidized polyethylene wax and the CZ3187 calcium-zinc composite stabilizer into a high-speed kneader, mixing for 0.5min under low-speed operation, adding the plasticizer TOTM, rotating from low speed to high speed, adding the antimony trioxide at the temperature of 115 ℃, stirring for 20min at the temperature of 120 ℃ to obtain a mixture, and adding the mixture into a double-screw extruder for extrusion and granulation.

Comparative example 2

The PVC cable comprises the following components in parts by mass: 100 parts of PVC powder with the polymerization degree of 1000, 10 parts of filler light calcium, 250010 parts of heavy calcium, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of CK280 stabilizer and 6 parts of CPE-135A.

The preparation method comprises the following steps of weighing the following raw materials, by weight, 100 parts of PVC powder with the polymerization degree of 1000, 10 parts of filler light calcium, 250010 parts of heavy calcium, 41 parts of plasticizer TOTM, 0.3 part of oxidized polyethylene wax, 4 parts of antimony trioxide, 5 parts of CK280 stabilizer and 6 parts of CPE-135A, adding the PVC powder, the filler light calcium, the heavy calcium 2500, the oxidized polyethylene wax, the CK280 stabilizer and the CPE-135A into a high-speed kneader, mixing for 0.5min through low-speed operation, adding the plasticizer TOTM, rotating at a low speed and a high speed, adding the antimony trioxide at a temperature of 115 ℃, stirring for 20min at a temperature of 120 ℃ to obtain a mixture, and adding the mixture into a double-screw extruder to extrude and granulate.

Hot water resistance test

Results of the experiment

The PVC cable which is prepared from the material without the hydrophilic group and has the long-acting hot water resistance can be soaked in hot water at 100 ℃ for 1000 hours, the wire is not swelled, the voltage resistance is 2KV/1 min, the voltage resistance is not broken, and the effect is better than that of the existing PVC cable formula.

The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.