CN109532152B - Acidolysis barrel lining anti-corrosion composite material and construction process thereof - Google Patents

Acidolysis barrel lining anti-corrosion composite material and construction process thereof Download PDF

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CN109532152B
CN109532152B CN201811374880.3A CN201811374880A CN109532152B CN 109532152 B CN109532152 B CN 109532152B CN 201811374880 A CN201811374880 A CN 201811374880A CN 109532152 B CN109532152 B CN 109532152B
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composite material
epoxy resin
layer
glass fiber
fiber cloth
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CN109532152A (en
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钱哲宇
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Wuxi Zhongbo Yuanhang Environmental Protection Technology Co ltd
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Abstract

The invention discloses an acidolysis barrel lining anticorrosion composite material and a construction process thereof. An acidolysis barrel lining anticorrosion composite material comprises a composite material isolation layer and a composite material lining layer; the composite material isolating layer is made of furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum; the composite material lining layer is formed by compounding epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth. The invention adopts the polymer composite material to replace the traditional anticorrosive material which uses lead lining or rubber lining as the isolating layer and porcelain plate as the lining layer, has the advantages of convenient production and manufacture, good integral structure, light weight, high strength, no toxicity, convenient installation and use, easy repair if part of quality problems occur in the later use process, smooth surface, wear resistance and temperature resistanceThe performance is good. The method is mainly used for preventing corrosion of the inner lining of the acidolysis barrel in the acidolysis process in the production of titanium dioxide by a sulfuric acid method.

Description

Acidolysis barrel lining anti-corrosion composite material and construction process thereof
Technical Field
The invention discloses a composite material, and particularly relates to an acidolysis barrel lining anticorrosion composite material and a construction process thereof.
Background
The acidolysis process is the first process in the production of titanium dioxide by sulfuric acid method, and ilmenite (TiO) after grinding and drying242-60 percent of the content) or acid-soluble titanium slag (TiO)2Content 72% -78%) is acidolyzed in acidolysis barrel by concentrated sulfuric acid, the titanium component in ilmenite is changed from solid state to liquid state. Most of domestic titanium dioxide plants adopt a gap acidolysis process, and an acidolysis barrel is selected to be 60-150 m according to process requirements3The specification of (1). The newly-built titanium white powder apparatus for producing, the acidolysis bucket develops to the macro-scale, and large-scale acidolysis bucket batch output is big, production is more stable. The acidolysis barrel is one of the main key devices in the production of titanium dioxide by a sulfuric acid method, the corrosion-resistant construction period of the device is long, the manufacturing cost is high, the normal production is seriously influenced by the damage of a corrosion-resistant layer, and the selection of a durable and economic corrosion-resistant process for the acidolysis barrel is very important. The early acidolysis barrel corrosion prevention scheme is as follows: a lead-lined layer with the thickness of 5mm is used as an isolation layer; 3 layers of acid-resistant and temperature-resistant porcelain plates are used as lining layers. In the using process, the bottom of the acidolysis barrel, particularly a porcelain plate near a compressed air distributor, is easy to be heated unevenly and often collapse under the action of scouring; the daub between the surface layer porcelain plates is easily corroded and abraded by scouring, and the service life of the anti-corrosion layer is only 6-8 a. At present, the acidolysis barrel corrosion prevention of titanium dioxide manufacturers by a sulfuric acid method is improved on the prior art, and the selected scheme mainly comprises the following 3 types: (1) the isolating layer is lead-lined with the thickness of 5mm, and the lining layer is 2 layers of acid-resistant and temperature-resistant ceramic tiles or 3 layers of acid-resistant and temperature-resistant porcelain plates; (2) the isolation layer is 4mm butyl rubber, and the lining layer is 2 layers of acid-resistant and temperature-resistant ceramic tiles or 3 layers of acid-resistant and temperature-resistant porcelain plates; (3) the isolating layer is made of lead-lined and rubber-lined, and the lining layer is 2 layers of acid-resistant and temperature-resistant ceramic tiles. The schemes have obvious progress in the aspects of corrosion prevention and heat preservation compared with the previous schemes, but still have obvious defects, such as good isolation effect of the lead-lined lining, strong anti-permeability capability, high density and toxicity. Before the large-scale carbon steel equipment tank body is installed, the large-scale carbon steel equipment tank body rolls on the ground to be enameled with lead (which is beneficial to ensuring the quality), and the requirements on the technical level of equipment installation and lead enameling personnel are high. The cost of the lead-lined lining is high. The butyl rubber lining has good isolation effect, strong impermeability, good vibration damping performance and good bonding performance with carbon steel. But the rubber plate is soft, the surface smoothness is poor, and wrinkles and the like are easy to occur.
Therefore, the acidolysis barrel lining anti-corrosion composite material and the construction process thereof provided by the invention have the advantages that the anti-corrosion and temperature resistance performances of the acidolysis barrel are improved, the construction process can be simplified, and no toxic substance is discharged, so that the requirements are very high.
Disclosure of Invention
An acidolysis barrel lining anti-corrosion composite material is realized by adopting the following scheme:
an acidolysis barrel lining anticorrosion composite material comprises a composite material isolation layer and a composite material lining layer; the composite material isolating layer is made of furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum; the composite material lining layer is formed by compounding epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth.
The construction process of the acidolysis barrel lining anticorrosive composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000011
Figure BSA0000174216830000021
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 7-13 mm;
(3) curing the furan resin-based composite material for 24-48h at room temperature, then curing for 2-6h at 100 ℃, then heating to 130-140 ℃, curing for 2-4h, and then cooling to room temperature to obtain a composite material isolation layer;
(4) adopting 2000-4000-mesh metallographic abrasive paper at 1-3kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly brushing the acetone on the blown and brushed surface, keeping the acetone wet the surface for 30-60min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000022
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 1-3 cm;
(11) the product is cured by adopting the step-by-step curing process of room temperature/12-24 h, 80-90 ℃/4-6h and 110-.
The rubber powder is butyl rubber powder, and the average particle size of the butyl rubber powder is 40-120 meshes.
The graphite powder is micropowder graphite powder, and the average grain diameter of the graphite powder is 1-5 mu m.
The average grain diameter of the carborundum is 30-50 mu m.
The ceramic powder is formed by compounding zirconia powder and silicon carbide powder according to the mass ratio of 1-3: 1, the particle size of the zirconia powder is 100-300nm, and the particle size of the silicon carbide powder is 3-7 mu m.
The glass fiber cloth is medium alkali glass fiber cloth, and the single weight of the glass fiber cloth is 220-400g/m2。
The invention relates to an acidolysis barrel lining anticorrosive composite material, which adopts a polymer composite material to replace the traditional lead lining or rubber lining to be used as an anticorrosive material for an isolating layer and an enamel plate to be used as a lining layer, is convenient to produce and manufacture, can be directly produced and processed by the traditional resin-based composite material hand-pasting and other production processes, and has the advantages of good integral structure, light weight, high strength, no toxicity, convenient installation and use, and easy repair if part of quality problems occur in the later use process. The traditional porcelain plate is used as a lining layer, and the porcelain plate is cracked or even damaged in the using process, so that the porcelain plate is very inconvenient to replace. In the aspect of manufacturing the isolation layer, compared with lead lining, the whole construction process is simple to operate, the risk of lead poisoning of workers is avoided in the operation process, and the cost is low; compared with rubber lining, the invention has high strength, smooth surface, good wear resistance and good temperature resistance.
Detailed Description
An acidolysis barrel lining anticorrosion composite material comprises a composite material isolation layer and a composite material lining layer; the composite material isolating layer is made of furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum; the composite material lining layer is formed by compounding epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth.
Example 1: a construction process of an acidolysis barrel lining anticorrosion composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000031
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 10 mm;
(3) curing the furan resin-based composite material for 36 hours at room temperature, then curing for 4 hours at 100 ℃, then heating to 135 ℃, curing for 3 hours, and then cooling to room temperature to obtain a composite material isolation layer;
(4) using 3000 mesh metallographic abrasive paper at 2kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly coating the acetone on the blown and brushed surface, keeping the acetone wet the surface for 45min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000032
Figure BSA0000174216830000042
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 2 cm;
(11) the product is cured by adopting a step-by-step curing process of room temperature/18 h, 85 ℃/5h and 115 ℃/2.5h to obtain the acidolysis barrel lining anticorrosive composite material.
Example 2: a construction process of an acidolysis barrel lining anticorrosion composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000041
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 7 mm;
(3) curing the furan resin-based composite material for 24 hours at room temperature, then curing for 2 hours at 100 ℃, then heating to 130 ℃, curing for 2 hours, and then cooling to room temperature to obtain a composite material isolation layer;
(4) using 2000 mesh metallographic abrasive paper at 1kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly brushing the acetone on the blown and brushed surface, keeping the acetone wet the surface for 30min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000043
Figure BSA0000174216830000052
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 1 cm;
(11) the product is cured by adopting a step-by-step curing process of room temperature/12 h, 80 ℃/4h and 110 ℃/2h to obtain the acidolysis barrel lining anticorrosive composite material.
Example 3: a construction process of an acidolysis barrel lining anticorrosion composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000051
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 13 mm;
(3) curing the furan resin-based composite material for 48 hours at room temperature, then curing for 6 hours at 100 ℃, then heating to 140 ℃, curing for 4 hours, and then cooling to room temperature to obtain a composite material isolation layer;
(4) adopting 4000-mesh metallographic abrasive paper at 3kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly brushing the acetone on the blown and brushed surface, keeping the acetone wet the surface for 60min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000053
Figure BSA0000174216830000062
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 3 cm;
(11) the product is cured by adopting a step-by-step curing process of room temperature/24 h, 90 ℃/6h and 120 ℃/3h to obtain the acidolysis barrel lining anticorrosive composite material.
Example 4: a construction process of an acidolysis barrel lining anticorrosion composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000061
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form the furan resin-based composite materialThe thickness is 10 mm;
(3) curing the furan resin-based composite material for 48 hours at room temperature, then curing for 2 hours at 100 ℃, then heating to 135 ℃, curing for 4 hours, and then cooling to room temperature to obtain a composite material isolation layer;
(4) using 2000 mesh metallographic abrasive paper at 2kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly brushing the acetone on the blown and brushed surface, keeping the acetone wet the surface for 60min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000063
Figure BSA0000174216830000072
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 2 cm;
(11) the product is cured by adopting a step-by-step curing process of room temperature/24 h, 80 ℃/5h and 120 ℃/2h to obtain the acidolysis barrel lining anticorrosive composite material.
Example 5: a construction process of an acidolysis barrel lining anticorrosion composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000071
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 13 mm;
(3) curing the furan resin-based composite material for 24 hours at room temperature, then curing for 4 hours at 100 ℃, then heating to 140 ℃, curing for 2 hours, and then cooling to room temperature to obtain a composite material isolation layer;
(4) using 3000 mesh metallographic abrasive paper at 3kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly brushing the acetone on the blown and brushed surface, keeping the acetone wet the surface for 30min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000073
Figure BSA0000174216830000082
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 3 cm;
(11) the product is cured by adopting a step-by-step curing process of room temperature/12 h, 85 ℃/6h and 110 ℃/2.5h to obtain the acidolysis barrel lining anticorrosive composite material.
Example 6: a construction process of an acidolysis barrel lining anticorrosion composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000081
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 7 mm;
(3) curing the furan resin-based composite material for 36 hours at room temperature, then curing for 6 hours at 100 ℃, then heating to 130 ℃, curing for 3 hours, and then cooling to room temperature to obtain a composite material isolation layer;
(4) adopting 4000-mesh metallographic abrasive paper at 1kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly coating the acetone on the blown and brushed surface, keeping the acetone wet the surface for 45min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000083
Figure BSA0000174216830000092
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 1 cm;
(11) the product is cured by adopting a step-by-step curing process of room temperature/18 h, 90 ℃/4h and 115 ℃/3h to obtain the acidolysis barrel lining anticorrosive composite material.
Example 7: a construction process of an acidolysis barrel lining anticorrosion composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000091
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 10 mm;
(3) curing the furan resin-based composite material for 48 hours at room temperature, then curing for 6 hours at 100 ℃, then heating to 130 ℃, curing for 3 hours, and then cooling to room temperature to obtain a composite material isolation layer;
(4) using 2000 mesh metallographic abrasive paper at 1kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly brushing the acetone on the blown and brushed surface, keeping the acetone wet the surface for 60min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000093
Figure BSA0000174216830000102
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 3 cm;
(11) the product is cured by adopting a step-by-step curing process of room temperature/18 h, 90 ℃/6h and 110 ℃/2.5h to obtain the acidolysis barrel lining anticorrosive composite material.
Example 8: a construction process of an acidolysis barrel lining anticorrosion composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000101
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 10 mm;
(3) curing the furan resin-based composite material for 36 hours at room temperature, then curing for 6 hours at 100 ℃, then heating to 140 ℃, curing for 4 hours, and then cooling to room temperature to obtain a composite material isolation layer;
(4) using 2000 mesh metallographic abrasive paper at 1kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly brushing the acetone on the blown and brushed surface, keeping the acetone wet the surface for 30min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000103
Figure BSA0000174216830000112
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 3 cm;
(11) the product is cured by adopting a step-by-step curing process of room temperature/24 h, 80 ℃/5h and 120 ℃/2h to obtain the acidolysis barrel lining anticorrosive composite material.
Example 9: a construction process of an acidolysis barrel lining anticorrosion composite material comprises the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure BSA0000174216830000111
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 8 mm;
(3) curing the furan resin-based composite material for 30 hours at room temperature, then curing for 5 hours at 100 ℃, then heating to 134 ℃, curing for 2.4 hours, and then cooling to room temperature to obtain a composite material isolation layer;
(4) using 3600 mesh metallographic abrasive paper at 1.3kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly brushing the acetone on the blown and brushed surface, keeping the acetone wet the surface for 50min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure BSA0000174216830000113
Figure BSA0000174216830000121
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, repeating the steps until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 1.3 cm;
(11) the product is cured by adopting a step-by-step curing process of room temperature/17 h, 86 ℃/4.6h and 112 ℃/2.3h to obtain the acidolysis barrel lining anticorrosive composite material.
The following tests prove the effect of example 1 of the present invention, and the test results are as follows:
static bending strength: 32.88MPa, static bending modulus: 1.77 GPa; after the composite material isolation layer is contacted with concentrated sulfuric acid at 120 ℃ for 48 hours, the static bending strength retention rate is 98.23%, the static bending modulus retention rate is 99.12%, and the surface has no cracks and corrosion spots or pits.
The results show that the composite material of the embodiment 1 has excellent mechanical properties and is resistant to high-temperature corrosion of concentrated sulfuric acid, and the use requirement of the acidolysis barrel can be completely met.

Claims (7)

1. An acidolysis barrel lining anti-corrosion composite material is characterized by comprising a composite material isolating layer and a composite material lining layer; the composite material isolation layer is prepared from 100 parts by weight of furan resin, 12-20 parts by weight of aluminum phosphate, 16-26 parts by weight of phosphoric acid and 8-10 parts by weight of AlCl3·6H2O, 6-8 parts of MgCl2·6H2O, 5-9 parts of rubber powder, 5-11 parts of graphite powder and 40-60 parts of carborundum; the composite material lining layer is formed by compounding 100 parts by mass of epoxy resin, 40-50 parts by mass of triethylene diamine, 10-20 parts by mass of ceramic powder and 30-60 parts by mass of glass fiber cloth.
2. The acidolysis barrel lining anti-corrosion composite material as claimed in claim 1, wherein the rubber powder is butyl rubber powder, and the average particle size of the butyl rubber powder is 40-120 meshes.
3. The acidolysis barrel lining anti-corrosion composite material as claimed in claim 1, wherein the graphite powder is micropowder graphite powder with an average particle size of 1-5 μm.
4. The acid hydrolysis tank lining anticorrosive composite material as claimed in claim 1, wherein the average grain size of the corundum is 30-50 μm.
5. The anti-corrosion composite material for the acidolysis barrel lining as claimed in claim 1, wherein the ceramic powder is prepared by compounding zirconia powder and silicon carbide powder according to the mass ratio of 1-3: 1, the particle size of the zirconia powder is 100-300nm, and the particle size of the silicon carbide powder is 3-7 μm.
6. The acid hydrolysis barrel lining anti-corrosion composite material as claimed in claim 1, wherein the glass fiber cloth is medium alkali glass fiber cloth with a single weight of 220-400g/m2。
7. The construction process of the acidolysis barrel lining anticorrosive composite material as claimed in claim 1, is characterized by comprising the following steps:
(1) weighing furan resin, aluminum phosphate, phosphoric acid and AlCl respectively according to the following mass parts3·6H2O、MgCl2·6H2O, rubber powder, graphite powder and carborundum:
Figure FSB0000191270860000011
(2) furan resin, aluminum phosphate, phosphoric acid and AlCl3·6H2O、MgCl2·6H2Uniformly mixing O, rubber powder, graphite powder and carborundum, and uniformly brushing to form a furan resin-based composite material with the thickness of 7-13 mm;
(3) curing the furan resin-based composite material for 24-48h at room temperature, then curing for 2-6h at 100 ℃, then heating to 130-140 ℃, curing for 2-4h, and then cooling to room temperature to obtain a composite material isolation layer;
(4) adopting 2000-4000-mesh metallographic abrasive paper at 1-3kgf/cm2Galling the surface of the composite material isolation layer under the action of force;
(5) blowing the brushed surface of the composite material isolation layer by using a blowing device, dipping acetone by using a brush, uniformly brushing the acetone on the blown and brushed surface, keeping the acetone wet the surface for 30-60min, and naturally drying;
(6) respectively weighing epoxy resin, triethylene diamine, ceramic powder and glass fiber cloth according to the following mass parts:
Figure FSB0000191270860000021
(7) uniformly mixing epoxy resin, triethylene diamine and ceramic powder, and removing bubbles in the mixture to obtain epoxy resin paste;
(8) uniformly brushing epoxy resin paste on the surface of the composite material isolation layer after the acetone treatment;
(9) spreading a layer of glass fiber cloth on the surface of the epoxy resin paste, rolling by using a roller, removing bubbles and ensuring that the glass fiber cloth is completely soaked by the epoxy resin paste;
(10) coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, rolling by using a roller to remove air bubbles, repeating the operation of coating a layer of epoxy resin paste on the upper surface of the glass fiber cloth, laying a layer of glass fiber cloth on the epoxy resin paste, rolling by using a roller to remove air bubbles until all the glass fiber cloth and the epoxy resin paste are used, and curing at room temperature to obtain a composite material lining layer with the thickness of 1-3 cm;
(11) the product is cured by adopting the step-by-step curing process of room temperature/12-24 h, 80-90 ℃/4-6h and 110-.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471252A (en) * 1966-01-22 1969-10-07 Mizusawa Industrial Chem Process for the preparation of titanium compounds which are substantially free from metallic impurities
CN87105590A (en) * 1986-07-25 1988-03-30 F.R.系统有限公司 Fire retardant
CN103112890A (en) * 2013-03-15 2013-05-22 四川龙蟒钛业股份有限公司 Acidolysis process in titanium dioxide production process
CN104559624A (en) * 2013-10-22 2015-04-29 青岛德固建筑材料有限公司 High-intensity waterproof and anti-corrosion coating
CN108716517A (en) * 2018-06-07 2018-10-30 安徽相驰车业有限公司 A kind of corrosion resistant brake block and its processing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471252A (en) * 1966-01-22 1969-10-07 Mizusawa Industrial Chem Process for the preparation of titanium compounds which are substantially free from metallic impurities
CN87105590A (en) * 1986-07-25 1988-03-30 F.R.系统有限公司 Fire retardant
CN103112890A (en) * 2013-03-15 2013-05-22 四川龙蟒钛业股份有限公司 Acidolysis process in titanium dioxide production process
CN104559624A (en) * 2013-10-22 2015-04-29 青岛德固建筑材料有限公司 High-intensity waterproof and anti-corrosion coating
CN108716517A (en) * 2018-06-07 2018-10-30 安徽相驰车业有限公司 A kind of corrosion resistant brake block and its processing method

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