CN113683844A - High-toughness polyvinyl chloride steel skeleton plastic dipping liquid and plastic dipping method thereof - Google Patents
High-toughness polyvinyl chloride steel skeleton plastic dipping liquid and plastic dipping method thereof Download PDFInfo
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- CN113683844A CN113683844A CN202110990315.5A CN202110990315A CN113683844A CN 113683844 A CN113683844 A CN 113683844A CN 202110990315 A CN202110990315 A CN 202110990315A CN 113683844 A CN113683844 A CN 113683844A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2301/00—Inorganic additives or organic salts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2320/00—Organic additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2506/00—Halogenated polymers
- B05D2506/20—Chlorinated polymers
- B05D2506/25—PVC
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
High-toughness polyvinyl chloride steel skeleton plastic dipping liquid and a plastic dipping method thereof relate to the anticorrosion protection of steel skeleton. The raw materials comprise the following components in parts by mass: 45-100 parts of high-polymerization-degree PVC paste resin; 5-40 parts of low-polymerization-degree PVC paste resin; 35-90 parts of a plasticizer; 5-30 parts of a stabilizer; 1-5 parts of a cross-linking agent; 2-5 parts of a viscosity reducer; 2-20 parts of a defoaming agent; 15-60 parts of inorganic additive. The plastic dipping method comprises the steps of sequentially adding the raw materials into a vacuum stirring kettle, and uniformly stirring at a proper temperature and a medium speed to obtain a high-toughness polyvinyl chloride plastic dipping solution; after the surface of the steel skeleton is treated, the steel skeleton is heated to 260 ℃ and 280 ℃ and is soaked in plastic for 20-30 s. The invention effectively avoids the plastic-impregnated layer from cracking and falling off in the repeated bending process of the steel skeleton, and prolongs the service life of the steel skeleton.
Description
Technical Field
The invention belongs to the technical field of rust-proof wear-resistant protection of the surface of a flexible product, and particularly relates to plastic dipping liquid for flexible articles such as a steel skeleton and a plastic dipping process thereof.
Background
Polyvinyl chloride (PVC) is used as common plastic, different modified materials are added to meet different use requirements, and the polyvinyl chloride (PVC) is widely applied to production and life, and is often applied to building materials, daily necessities, pipes, metal instruments, hardware handles, insulating materials, protective parts of handicrafts, tools and the like. Because PVC has good corrosion resistance, stability, abrasion resistance and insulativity and is easy to process and form, the research and development of the high-toughness PVC plastic dipping liquid has important significance for the corrosion resistance and the abrasion resistance protection of flexible and flexible products such as steel frameworks and the like, and the good follow-up property and the adhesiveness of the plastic dipping layer can avoid cracking and falling off in the movement or bending process and can be used in different working conditions and environments.
Application publication No. is CN 104910553A's patent discloses a pitted surface polyvinyl chloride soaks and moulds liquid and preparation method thereof, through replacing poisonous DOP with environment-friendly plasticizer, it is poisonous to have solved previous soaking and mould the liquid, harmful problem to environment and human body, accord with the requirement of product safety ring now, and should soak and mould the liquid shaping surface and be the pitted surface, it is great to soak the frictional force between layer and the other object of moulding, can play the antiskid effect, but the frictional force too big can soak and mould the wearing and tearing of layer and accelerate, be unfavorable for the wear-resisting protection of product.
The application publication No. CN106832686A discloses a PVC heat-conducting insulating sleeve and a preparation method thereof, an insulating end sleeve can be obtained by adopting a mould plastic dipping process and a cooling air gun demoulding method, the forming period is short, the operation is simple, a formed product has better heat conductivity and insulativity and can be used on electrical parts with serious heat production, but the product can only be used at a heat-conducting insulating edge of a wire end, the application range is narrow, and the corrosion-resistant and wear-resistant protection of a steel framework cannot be met.
Application publication No. CN106633504AS discloses a preparation method and device of polyvinyl chloride plastic dipping liquid, and this plastic dipping liquid realizes quality compensation and noise reduction of elevator compensation chain through forming a layer of plastic dipping layer outside the iron chain of elevator, has reduced the preparation cost of plastic dipping liquid and has improved the quality of plastic dipping liquid. The plastic-dipped liquid is mainly coated on a compensation chain for use after being molded, and has higher apparent hardness, so that the toughness of a product is insufficient, and the use requirement of flexible deformation of a flexible material cannot be met.
Application publication No. is CN 110527213A's patent discloses a kettle-bell soaks moulds liquid and soaks moulds technology thereof, through to the kettle-bell surface treatment with soak and mould the shaping and obtain soaking and mould the layer, it can be fine to soak and mould the layer and prevent that the surface from rustting attached to kettle-bell surface protection kettle-bell, the life of kettle-bell has been prolonged, should soak and mould the surface that the liquid is applicable to non-deformable products such as kettle-bell and soak and mould processing and protection, to the steel skeleton, the protection effect of flexible yielding products such as wire rope is not too good, application scope is limited, and it splits in bending deformation and drops to soak and mould the layer, need periodic replacement.
The patent with the publication number of CN103205068A discloses an antistatic plastic-dipped product and a preparation method thereof, the product has the functions of flame retardance and static resistance, can reduce the harm caused by static electricity, can be widely used in the fields of various instrument elements, sensors and the like which need static protection, and protects signals from being interfered. However, the product is mainly used for protecting rigid body elements, has poor protection capability on flexible and flexible products, has poor follow-up property of a plastic dipping layer, and is not suitable for plastic dipping requirements of flexible products such as steel frameworks and the like.
Disclosure of Invention
The invention aims to provide a polyvinyl chloride plastic dipping liquid with high toughness and a plastic dipping process thereof, wherein a plastic dipping layer has good adhesiveness, lower surface hardness, proper tensile strength and high elongation at break so that the plastic dipping layer has high toughness and follow-up property, can move along with bending deformation of a steel skeleton and cannot crack and separate along with bending of the steel skeleton; the steel skeleton has strong anti-extrusion capability and good wear resistance, the plastic-impregnated layer can protect the steel skeleton from corrosion, rusting, extrusion deformation and damage, and the service life of the steel skeleton is prolonged.
The invention achieves the purpose through the following technical scheme:
a preparation method of a high-toughness polyvinyl chloride steel skeleton plastic dipping liquid comprises the following specific steps:
(1) 45-100 parts of high-polymerization-degree PVC paste resin; 5-40 parts of low-polymerization-degree PVC paste resin; 35-90 parts of a plasticizer; 5-30 parts of a stabilizer; 1-5 parts of a cross-linking agent; 2-5 parts of a viscosity reducer; 2-20 parts of a defoaming agent; 15-60 parts of inorganic additive.
The high polymerization degree PVC paste resin adopts PSH-10 PVC paste resin.
The low-polymerization-degree PVC paste resin adopts BPR-11PVC paste resin.
The viscosity reducer adopts ZR333 viscosity reducer.
The defoaming agent is organic silicone oil.
The inorganic additive adopts nano calcium carbonate.
The plasticizer is citrate, glyceryl dioleate or phosphate.
The stabilizer is a calcium-zinc composite stabilizer.
The cross-linking agent is blocked isocyanate.
(2) Adding the plasticizer and the PSH-10 PVC paste resin weighed in the step (1) into a vacuum stirring kettle, and stirring at medium speed for 15-20min in a water bath at 40-70 ℃;
(3) adding the calcium-zinc composite stabilizer, BPR-11PVC paste resin, ZR333 viscosity reducer and high-temperature-resistant organic silicone oil defoamer weighed in the step (1) into a vacuum stirring kettle, vacuumizing in a water bath at 40-70 ℃, and stirring at a medium speed for 25-30 min;
(4) adding the JB-696C crosslinking agent and the nano calcium carbonate weighed in the step (1) into a vacuum stirring kettle, vacuumizing at constant temperature under a water bath of 40-70 ℃, and stirring at medium speed for 30-40min to obtain the required plastic dipping solution.
A high-toughness polyvinyl chloride steel skeleton plastic dipping method comprises the following specific steps:
(1) preheating the prepared high-toughness polyvinyl chloride steel skeleton plastic-dipping liquid to 50-70 ℃ and keeping the temperature for later use;
(2) surface treatment of a steel skeleton: after rust removal and polishing of the surface of the steel skeleton, adding the steel skeleton into concentrated nitric acid solution for passivation treatment at normal temperature for 5-10min, and washing the steel skeleton for 30-40s for later use by using clear water;
(3) heating the steel skeleton processed in the step (2) to 260-280 ℃, and plastic dipping for 20-30 s;
(4) and (4) placing the steel skeleton subjected to plastic dipping in the step (3) in a drying oven at 180 ℃ for drying for 15-20min, and naturally cooling to room temperature to obtain the high-toughness plastic dipping product.
The invention has the beneficial effects that:
(1) the plastic-impregnated layer has high toughness and softness due to low surface hardness, proper tensile strength and high elongation at break, and can meet the use requirement of the plastic-impregnated layer under the bending motion condition;
(2) the good surface adhesion and the high toughness of the plastic dipping layer can enable the plastic dipping layer to bend along with the bending deformation of the steel skeleton, have good follow-up property and can ensure that the plastic dipping layer cannot crack and fall off under high bending times.
Detailed Description
The invention is further illustrated by the following examples:
example 1:
(1) weighing 65 parts of PSH-10 PVC paste resin; 25 parts of BPR-11PVC paste resin; 80 parts of a citrate plasticizer; 5 parts of a calcium-zinc composite stabilizer; 1 part of blocked isocyanate JB-696C crosslinking agent; 2 parts of ZR333 viscosity reducer; 2 parts of high-temperature resistant organic silicone oil defoaming agent; 45 parts of nano calcium carbonate for later use;
(2) adding the citrate plasticizer and the PSH-10 PVC paste resin weighed in the step (1) into a vacuum stirring kettle, and stirring at medium speed for 20min in a water bath at the temperature of 45 ℃;
(3) adding the calcium-zinc composite stabilizer, BPR-11PVC paste resin, ZR333 viscosity reducer and high-temperature-resistant organic silicone oil defoamer weighed in the step (1) into a vacuum stirring kettle, and vacuumizing in a water bath at 45 ℃ and stirring at a medium speed for 25 min;
(4) adding the JB-696C crosslinking agent and the nano calcium carbonate weighed in the step (1) into a vacuum stirring kettle, vacuumizing at constant temperature in a water bath at 45 ℃, and stirring at medium speed for 35min to obtain a required plastic dipping solution, and keeping the temperature of the plastic dipping solution at 55 ℃ for later use;
(5) surface treatment of a steel skeleton: after rust removal and polishing of the surface of the steel skeleton, adding the steel skeleton into concentrated nitric acid solution for passivation treatment at normal temperature for 5min, and washing the steel skeleton for 35s for later use by using clear water;
(6) heating the steel skeleton processed in the step (5) to 260 ℃, and dipping plastic in the plastic dipping liquid prepared in the step (4) for 30 s;
(7) and (4) placing the steel skeleton soaked in the plastic in the step (6) in a drying oven for drying at 160 ℃ for 20min, and naturally cooling to room temperature to obtain the high-toughness plastic-soaked product.
The tensile strength of the dip-molded article of this example was 19.8MPa, the surface hardness was 52 shore A, and the elongation at break was 734.41%, and the article was recovered in 3s of 50 consecutive bending creases.
Example 2:
(1) weighing 80 parts of PSH-10 PVC paste resin; 15 parts of BPR-11PVC paste resin; 70 parts of a diglyceride plasticizer; 15 parts of calcium-zinc composite stabilizer; 3 parts of a closed isocyanate JB-696C crosslinking agent; 3 parts of ZR333 viscosity reducer; 5 parts of high-temperature resistant organic silicone oil defoaming agent; 30 parts of nano calcium carbonate for later use;
(2) adding the diglycerol oleate plasticizer and the PSH-10 PVC paste resin weighed in the step (1) into a vacuum stirring kettle, and stirring at medium speed for 15min in a water bath at 55 ℃;
(3) adding the calcium-zinc composite stabilizer, BPR-11PVC paste resin, ZR333 viscosity reducer and high-temperature-resistant organic silicone oil defoamer weighed in the step (1) into a vacuum stirring kettle, vacuumizing in a water bath at 55 ℃, and stirring at a medium speed for 30 min;
(4) adding the JB-696C crosslinking agent and the nano calcium carbonate weighed in the step (1) into a vacuum stirring kettle, vacuumizing at constant temperature in a water bath at 45 ℃, and stirring at medium speed for 35min to obtain a required plastic dipping solution, and keeping the temperature of the plastic dipping solution at 55 ℃ for later use;
(5) surface treatment of a steel skeleton: after rust removal and polishing of the surface of the steel skeleton, adding the steel skeleton into concentrated nitric acid solution for passivation treatment at normal temperature for 10min, and washing the steel skeleton for 35s for later use by using clear water;
(6) heating the steel skeleton processed in the step (5) to 270 ℃, and dipping plastic in the plastic dipping liquid prepared in the step (4) for 30 s;
(7) and (4) placing the steel skeleton soaked in the plastic in the step (6) in a drying oven for drying for 20min at the temperature of 170 ℃, and naturally cooling to room temperature to obtain the high-toughness plastic-soaked product.
The tensile strength of the dip-molded article of this example was 17.9MPa, the surface hardness was 55 Shore A, the elongation at break was 742.95%, and the article was recovered in 4.5s by 50 consecutive bending creases.
Example 3:
(1) weighing 95 parts of PSH-10 PVC paste resin; 10 parts of BPR-11PVC paste resin; 55 parts of tricresyl phosphate plasticizer; 25 parts of calcium-zinc composite stabilizer; 5 parts of a closed isocyanate JB-696C crosslinking agent; 5 parts of ZR333 viscosity reducer; 12 parts of an organic silicone oil defoaming agent; 15 parts of nano calcium carbonate for later use;
(2) adding the tricresyl phosphate plasticizer and the PSH-10 PVC paste resin weighed in the step (1) into a vacuum stirring kettle, and stirring at medium speed for 15min in a water bath at 65 ℃;
(3) adding the calcium-zinc composite stabilizer, BPR-11PVC paste resin, ZR333 viscosity reducer and high-temperature-resistant organic silicone oil defoamer weighed in the step (1) into a vacuum stirring kettle, vacuumizing in a water bath at 65 ℃, and stirring at a medium speed for 25 min;
(4) adding the JB-696C crosslinking agent and the nano calcium carbonate weighed in the step (1) into a vacuum stirring kettle, vacuumizing at constant temperature in a water bath at 65 ℃, and stirring at medium speed for 40min to obtain a required plastic dipping solution, and keeping the temperature of the plastic dipping solution at 65 ℃ for later use;
(5) surface treatment of a steel skeleton: after rust removal and polishing of the surface of the steel skeleton, adding the steel skeleton into concentrated nitric acid solution for passivation treatment at normal temperature for 10min, and washing the steel skeleton for 35s for later use by using clear water;
(6) heating the steel skeleton processed in the step (5) to 280 ℃, and dipping plastic in the plastic dipping liquid prepared in the step (4) for 30 s;
(7) and (4) placing the steel skeleton soaked in the plastic in the step (6) in a drying oven for drying at 180 ℃ for 20min, and naturally cooling to room temperature to obtain the high-toughness plastic-soaked product.
The tensile strength of the dip-molded article of this example was 19.2MPa, the surface hardness was 53 Shore A, the elongation at break was 706.53%, and the article was recovered in 4s by 50 consecutive bending creases.
Example 4:
(1) weighing 50 parts of PSH-10 PVC paste resin according to the weight ratio; 40 parts of BPR-11PVC paste resin; 75 parts of tricresyl phosphate plasticizer; 30 parts of calcium-zinc composite stabilizer; 2 parts of a closed isocyanate JB-696C crosslinking agent; 3 parts of ZR333 viscosity reducer; 15 parts of an organic silicone oil defoaming agent; 35 parts of nano calcium carbonate for later use;
(2) adding the tricresyl phosphate plasticizer and the PSH-10 PVC paste resin weighed in the step (1) into a vacuum stirring kettle, and stirring at a medium speed for 20min in a water bath at 70 ℃;
(3) adding the calcium-zinc composite stabilizer, BPR-11PVC paste resin, ZR333 viscosity reducer and high-temperature-resistant organic silicone oil defoamer weighed in the step (1) into a vacuum stirring kettle, vacuumizing in a water bath at 70 ℃, and stirring at a medium speed for 25 min;
(4) adding the JB-696C crosslinking agent and the nano calcium carbonate weighed in the step (1) into a vacuum stirring kettle, vacuumizing at constant temperature in a water bath at 70 ℃, and stirring at medium speed for 40min to obtain a required plastic dipping solution, and keeping the temperature of the plastic dipping solution at 70 ℃ for later use;
(5) surface treatment of a steel skeleton: after rust removal and polishing of the surface of the steel skeleton, adding the steel skeleton into concentrated nitric acid solution for passivation treatment at normal temperature for 5min, and washing the steel skeleton for 40s for later use by using clear water;
(6) heating the steel skeleton processed in the step (5) to 280 ℃, and dipping plastic in the plastic dipping liquid prepared in the step (4) for 30 s;
(7) and (4) placing the steel skeleton subjected to plastic dipping in the step (6) in a drying oven for drying for 15min at 180 ℃, and naturally cooling to room temperature to obtain a high-toughness plastic dipped product.
The tensile strength of the dip-molded article of this example was 18.5MPa, the surface hardness was 49 Shore A, the elongation at break was 711.36%, and the article was recovered in 4s by 50 consecutive bending creases.
Claims (5)
1. The high-toughness polyvinyl chloride steel skeleton plastic dipping liquid is characterized by comprising the following raw materials in parts by mass: 45-100 parts of high-polymerization-degree PVC paste resin; 5-40 parts of low-polymerization-degree PVC paste resin; 35-90 parts of a plasticizer; 5-30 parts of a stabilizer; 1-5 parts of a cross-linking agent; 2-5 parts of a viscosity reducer; 2-20 parts of a defoaming agent; 15-60 parts of inorganic additive.
2. The high-toughness polyvinyl chloride steel skeleton plastic-dipping liquid as claimed in claim 1, wherein the plasticizer is citric acid ester, glyceryl dioleate or phosphate ester.
3. The high toughness polyvinyl chloride steel skeleton plastic dipping liquid as claimed in claim 1, wherein the inorganic additive is nano calcium carbonate.
4. The high toughness polyvinyl chloride steel skeleton plastic dipping liquid as claimed in claim 1, wherein the preparation method comprises the following steps:
(1) the raw material formulation of claim 1;
(2) adding the plasticizer and the PVC paste resin with high polymerization degree weighed in the step (1) into a vacuum stirring kettle, and stirring at medium speed for 15-20min in water bath at 40-70 ℃;
(3) adding the calcium-zinc composite stabilizer, the low-polymerization-degree PVC paste resin, the viscosity reducer and the defoaming agent weighed in the step (1) into a vacuum stirring kettle, and vacuumizing and stirring at medium speed for 25-30min in water bath at 40-70 ℃;
(4) and (2) adding the cross-linking agent and the inorganic additive weighed in the step (1) into a vacuum stirring kettle, vacuumizing at constant temperature in a water bath at 40-70 ℃, and stirring at medium speed for 30-40min to obtain the required plastic dipping liquid.
5. A high-toughness polyvinyl chloride steel skeleton plastic dipping method is characterized by comprising the following steps:
(1) preheating the high-toughness polyvinyl chloride steel skeleton plastic-dipping liquid of claim 1 to 50-70 ℃ for later use;
(2) surface treatment of a steel skeleton: after rust removal and polishing of the surface of the steel skeleton, adding the steel skeleton into concentrated nitric acid solution for passivation treatment at normal temperature for 5-10min, and washing the steel skeleton for 30-40s for later use by using clear water;
(3) heating the steel skeleton processed in the step (2) to 260-280 ℃, and plastic dipping for 20-30 s;
(4) and (4) placing the steel skeleton subjected to plastic dipping in the step (3) in a drying oven at 180 ℃ for drying for 15-20min, and naturally cooling to room temperature to obtain the high-toughness plastic dipping product.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114773751A (en) * | 2022-05-24 | 2022-07-22 | 太原理工大学 | Steel wire mesh plastic dipping liquid and steel wire mesh plastic dipping method |
| CN115651327A (en) * | 2022-11-02 | 2023-01-31 | 太原理工大学 | High-adhesion steel skeleton plastic dipping liquid and steel skeleton plastic dipping method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114773751A (en) * | 2022-05-24 | 2022-07-22 | 太原理工大学 | Steel wire mesh plastic dipping liquid and steel wire mesh plastic dipping method |
| CN115651327A (en) * | 2022-11-02 | 2023-01-31 | 太原理工大学 | High-adhesion steel skeleton plastic dipping liquid and steel skeleton plastic dipping method |
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