CN114318875B - Preparation method of epoxy emulsion for corrosion-resistant high-pressure pipeline yarns - Google Patents
Preparation method of epoxy emulsion for corrosion-resistant high-pressure pipeline yarns Download PDFInfo
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- 239000000839 emulsion Substances 0.000 title claims abstract description 83
- 239000004593 Epoxy Substances 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 37
- 238000005260 corrosion Methods 0.000 title claims abstract description 25
- 230000007797 corrosion Effects 0.000 title claims abstract description 25
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000000654 additive Substances 0.000 claims abstract description 44
- 239000003822 epoxy resin Substances 0.000 claims abstract description 39
- 239000000203 mixture Substances 0.000 claims abstract description 39
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 39
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003054 catalyst Substances 0.000 claims abstract description 16
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 16
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 16
- WJIBZZVTNMAURL-UHFFFAOYSA-N phosphane;rhodium Chemical compound P.[Rh] WJIBZZVTNMAURL-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims description 192
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 63
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 63
- 239000004571 lime Substances 0.000 claims description 63
- 238000003756 stirring Methods 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 37
- 229910052602 gypsum Inorganic materials 0.000 claims description 35
- 239000010440 gypsum Substances 0.000 claims description 35
- 239000000835 fiber Substances 0.000 claims description 34
- 238000000227 grinding Methods 0.000 claims description 28
- 238000005096 rolling process Methods 0.000 claims description 26
- 239000002956 ash Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 14
- 230000001804 emulsifying effect Effects 0.000 claims description 14
- 238000012216 screening Methods 0.000 claims description 14
- 239000011265 semifinished product Substances 0.000 claims description 14
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 12
- 229910021538 borax Inorganic materials 0.000 claims description 7
- 239000000292 calcium oxide Substances 0.000 claims description 7
- 235000012255 calcium oxide Nutrition 0.000 claims description 7
- 239000010883 coal ash Substances 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 239000004328 sodium tetraborate Substances 0.000 claims description 7
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 7
- 239000010902 straw Substances 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 abstract description 7
- 230000000996 additive effect Effects 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000003595 mist Substances 0.000 abstract 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention belongs to the field of epoxy emulsion, in particular to a preparation method of epoxy emulsion for corrosion-resistant high-pressure pipeline yarns, which aims at solving the problem that the existing corrosiveness cannot be effectively enhanced and provides the following scheme that the preparation method comprises the following steps: the preparation material comprises 100 parts of epoxy resin, 30-40 parts of polyisocyanate, 15-20 parts of glycerol, 10-14 parts of phosphorus pentoxide, 10-15 parts of additive, 10-15 parts of vegetation mixture and 2-5 parts of rhodium phosphine complex catalyst, so that the corrosion resistance of the epoxy emulsion is improved, the alkali resistance of the epoxy emulsion is greatly improved, the epoxy emulsion can be contacted with alkaline substances for a long time without being corroded, the salt mist resistance of the epoxy emulsion is improved, the salt mist can only slowly corrode the epoxy emulsion, the salt mist resistance of the epoxy emulsion is improved, the scrub resistance of the epoxy emulsion is also improved, and the phenomena of separation, falling and the like of the epoxy emulsion can not occur even if the epoxy emulsion is scrubbed repeatedly.
Description
Technical Field
The invention relates to the technical field of epoxy emulsion, in particular to a preparation method of epoxy emulsion for corrosion-resistant high-pressure pipeline yarns.
Background
The patent with the application number of CN201710257446.6 discloses a preparation method of an aqueous epoxy emulsion, and the invention provides a preparation method of the aqueous epoxy emulsion. The method comprises the following steps: (1) Placing a proper amount of epoxy resin into a reaction container, sequentially adding polyether and a catalyst into the reaction container, uniformly stirring, heating to 30-150 ℃ and preserving heat for 1-7 hours; (2) Adding the rest epoxy resin into the reaction container, stirring uniformly, adding phosphoric acid at 30-150 ℃, stirring uniformly again, and preserving heat for 0.5-6 hours; (3) Cooling to 25-100 ℃, and adding water for emulsification to obtain the aqueous epoxy emulsion. The aqueous epoxy emulsion provided by the invention has good film forming compactness; the epoxy group with stronger activity is reserved, and the epoxy group can be cured at room temperature by matching with a curing agent; the phosphoric acid is introduced to improve the adhesive force between the aqueous epoxy emulsion and the substrate and the salt spray resistance of the aqueous epoxy emulsion.
However, the preparation method of the aqueous epoxy emulsion has some problems, such as the corrosion resistance cannot be effectively enhanced, the epoxy emulsion is still corroded rapidly in the working environment, the components of the epoxy emulsion are separated from each other, the epoxy emulsion finally becomes brittle or even falls off, the stability is poor, and a plurality of inconveniences are brought to the use of the epoxy emulsion.
Disclosure of Invention
Based on the problem that corrosiveness cannot be effectively enhanced in the background technology, the invention provides a preparation method of an epoxy emulsion for corrosion-resistant high-pressure pipeline yarns.
The invention provides a preparation method of an epoxy emulsion for corrosion-resistant high-pressure pipeline yarns, which comprises the following steps:
s1: preparing a material, wherein the material comprises 100 parts of epoxy resin, 30-40 parts of polyisocyanate, 15-20 parts of glycerol, 10-14 parts of phosphorus pentoxide, 10-15 parts of additive materials, 10-15 parts of vegetation mixture and 2-5 parts of rhodium phosphine complex catalyst, the additive materials comprise special lime powder and special gypsum powder, and the vegetation mixture comprises plant ash and plant fibers;
s2: pouring half of epoxy resin and all polyisocyanate into a reaction kettle for stirring reaction, and filling inert gas into the reaction kettle for protection to prepare primary emulsion;
s3: starting ultrasonic waves to vibrate the primary emulsion for 5-15 minutes, dropwise adding glycerol in the vibration process, adding the rest epoxy resin after vibration is completed, raising the temperature to 75-85 ℃, raising the rotating speed to 620-720 r/min, and reacting for 5-15 minutes to obtain a mixed solution;
s4: starting ultrasonic waves to vibrate, slowly adding phosphorus pentoxide and rhodium phosphine complex catalyst in the vibration process, reducing the rotating speed to 320-420 r/min, vibrating for 10-20 min, slowly adding additives and vegetation mixture, controlling the temperature of the additives and the vegetation mixture to be 50-60 ℃, raising the temperature to 105-125 ℃ after all the additives and the vegetation mixture are added, raising the rotation to 420-520 r/min, reacting for 45-60 min, and continuing to react to finally obtain an emulsion semi-finished product;
s5: pouring the emulsion semi-finished product into a homogenizer, controlling the emulsifying pressure at 45-85 MPa, emulsifying for 1-1.5 hours, and finally preparing the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns.
Preferably, in S1, the epoxy resin is bisphenol a epoxy resin, and is a liquid formed by mixing epoxy E51, epoxy E44 and epoxy E20.
Preferably, in the step S1, the proportion of the special lime powder and the special gypsum powder in the additive is controlled to be 45% -55%, namely 45% -55%.
Preferably, in the step S1, the method for preparing the specially-made lime powder comprises the following steps: selecting proper lime powder, grinding, putting the lime powder into a reaction kettle, stirring at 180-230 ℃ for 15-30 minutes, immediately pouring the lime powder into cooling equipment, cooling the lime powder in an environment of minus 30-minus 20 ℃ for 15-20 minutes, grinding the lime powder by adopting hot high-speed airflow at 80-130 ℃ until the powder is screened by a 200-mesh sieve, and preparing the special lime powder.
Preferably, in the step S1, the method for preparing the special gypsum powder comprises the following steps: 80% of gypsum powder, 8% of borax, 7% of quicklime powder and 5% of coal ash are obtained, the mixture is poured into a baking oven to be baked in a vacuum state after being uniformly mixed, the baking temperature is controlled to be 220-260 ℃, the baking temperature is controlled to be 15-25 minutes, the baking temperature is poured into a ball mill to be ground, the grinding is carried out to obtain powder, the powder is subjected to hot high-speed air flow mixing grinding at 80-130 ℃, and finally the powder is sieved by a 200-mesh sieve to obtain the special gypsum powder.
Preferably, in the step S1, the plant ash and the plant fiber are respectively processed by the same batch of plants through different procedures, and the plant mixture adopts 10-mesh-sieve straw powder, flower, plant branch and leaf powder and tree powder as raw materials.
Preferably, in S1, the preparation method of the plant fiber comprises: and pouring the plant powder into rolling equipment to roll under the pressure of 3-5 tons, pouring the plant powder into stirring equipment to be rapidly stirred after rolling for 45-60 minutes, separating the bonded powder, pouring the powder into screening equipment, screening the powder by using a 20-mesh sieve, pouring the powder which does not pass through the 20-mesh sieve into the stirring equipment to be stirred and dispersed, and finally obtaining the plant fiber.
Preferably, the powder passing through the 20-mesh sieve is poured into a baking device to be baked at the temperature of 320-360 ℃ until the powder is completely carbonized, and the plant ash is prepared after regrinding.
Preferably, in the step S2, the temperature is controlled to be 60-65 ℃, the rotating speed is controlled to be 450-520 r/min, and the reaction is carried out for 5-15 minutes.
Preferably, in the step S4, when the reaction is continued, the ultrasonic wave is started to vibrate, the rotating speed is reduced to 220 r/min-320 r/min, and the temperature is reduced to 80-95 ℃.
The invention has the beneficial effects that:
the polyisocyanate, the glycerol, the additives and the vegetation mixture are added in the epoxy resin, so that the corrosion resistance of the epoxy emulsion is improved, the alkali resistance of the epoxy emulsion is greatly improved, the epoxy emulsion can be contacted with alkaline substances for a long time without being corroded, the salt fog resistance of the epoxy emulsion is improved, the salt fog can only slowly corrode the epoxy emulsion, the salt fog resistance of the epoxy emulsion is improved, the scrubbing resistance of the epoxy emulsion is improved, and the phenomena of separation, falling and the like can not occur even if the epoxy emulsion is scrubbed repeatedly.
Drawings
Fig. 1 is a flow chart of the operation proposed by the present invention.
Detailed Description
The invention is further illustrated below in connection with specific embodiments.
Referring to fig. 1, embodiment one
In this embodiment, a method for preparing an epoxy emulsion for corrosion-resistant high-pressure pipeline yarns is provided, which comprises the following steps:
s1: the preparation method comprises the steps of preparing materials, namely, 100 parts of epoxy resin, 39 parts of polyisocyanate, 19 parts of glycerol, 13 parts of phosphorus pentoxide, 14 parts of additives, 14 parts of vegetation mixture and 5 parts of rhodium phosphine complex catalyst, wherein the additives comprise special lime powder and special gypsum powder, the vegetation mixture comprises plant ash and plant fibers, the epoxy resin is bisphenol A type epoxy resin, liquid formed by mixing epoxy E51, epoxy E44 and epoxy E20, the proportion of the special lime powder and the special gypsum powder in the additives is controlled to be 45% -55%, and the preparation method of the special lime powder comprises the following steps: selecting proper lime powder, grinding, putting the lime powder into a reaction kettle, stirring at 180-230 ℃ for 15-30 minutes, immediately pouring the lime powder into cooling equipment, cooling the lime powder in an environment of minus 30-minus 20 ℃ for 15-20 minutes, grinding the lime powder by adopting hot high-speed airflow at 80-130 ℃ until the powder is screened by a 200-mesh sieve to prepare special lime powder, and the preparation method of the special gypsum powder comprises the following steps: the method comprises the steps of obtaining 80% of gypsum powder, 8% of borax, 7% of quicklime powder and 5% of coal ash, uniformly mixing, pouring into a baking oven, baking in a vacuum state, controlling the baking temperature to be 220-260 ℃, baking for 15-25 minutes, pouring into a ball mill, grinding into powder, adopting hot high-speed air flow mixing grinding at 80-130 ℃, and finally sieving with a 200-mesh sieve to obtain the special gypsum powder, wherein plant ash and plant fiber are respectively processed by the same batch of plants through different procedures, straw powder, flower and plant branch and leaf powder and tree powder which are sieved with a 10-mesh sieve are adopted as raw materials for the plant fiber, and the preparation method of the plant fiber comprises the following steps: pouring plant powder into a rolling device for rolling under the pressure of 3-5 tons, pouring the rolling powder into a stirring device for rapid stirring after rolling for 45-60 minutes, separating the bonded powder, pouring the powder into a screening device, screening by using a 20-mesh sieve, pouring the powder which does not pass through the 20-mesh sieve into the stirring device for stirring and scattering, finally preparing plant fibers, pouring the powder which passes through the 20-mesh sieve into a baking device for baking at the temperature of 320-360 ℃ until the powder is completely carbonized, and regrinding to prepare plant ash;
s2: pouring half of epoxy resin and all polyisocyanate into a reaction kettle for stirring reaction, filling inert gas into the reaction kettle for protection, controlling the temperature at 60-65 ℃ and the rotating speed at 450-520 r/min, and reacting for 5-15 minutes to obtain primary emulsion;
s3: starting ultrasonic waves to vibrate the primary emulsion for 5-15 minutes, dropwise adding glycerol in the vibration process, adding the rest epoxy resin after vibration is completed, raising the temperature to 75-85 ℃, raising the rotating speed to 620-720 r/min, and reacting for 5-15 minutes to obtain a mixed solution;
s4: starting ultrasonic waves to vibrate, slowly adding phosphorus pentoxide and rhodium phosphine complex catalyst in the vibration process, reducing the rotating speed to 320-420 r/min, vibrating for 10-20 min, slowly adding additives and vegetation mixture, controlling the temperature of the additives and the vegetation mixture to be 50-60 ℃, raising the temperature to 105-125 ℃ after all the additives and the vegetation mixture are added, raising the rotation to 420-520 r/min, reacting for 45-60 min, continuing the reaction, starting the ultrasonic waves to vibrate, reducing the rotating speed to 220-320 r/min, and reducing the temperature to 80-95 ℃ to finally prepare emulsion semi-finished products;
s5: pouring the emulsion semi-finished product into a homogenizer, controlling the emulsifying pressure at 45-85 MPa, emulsifying for 1-1.5 hours, and finally preparing the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns.
Referring to FIG. 1, embodiment II
In this embodiment, a method for preparing an epoxy emulsion for corrosion-resistant high-pressure pipeline yarns is provided, which comprises the following steps:
s1: the preparation method comprises the steps of preparing materials, namely, 100 parts of epoxy resin, 35 parts of polyisocyanate, 17 parts of glycerol, 13 parts of phosphorus pentoxide, 13 parts of additives, 14 parts of vegetation mixture and 4 parts of rhodium phosphine complex catalyst, wherein the additives comprise special lime powder and special gypsum powder, the vegetation mixture comprises plant ash and plant fibers, the epoxy resin is bisphenol A type epoxy resin, liquid formed by mixing epoxy E51, epoxy E44 and epoxy E20, the proportion of the special lime powder and the special gypsum powder in the additives is controlled to be 45% -55%, and the preparation method of the special lime powder comprises the following steps: selecting proper lime powder, grinding, putting the lime powder into a reaction kettle, stirring at 180-230 ℃ for 15-30 minutes, immediately pouring the lime powder into cooling equipment, cooling the lime powder in an environment of minus 30-minus 20 ℃ for 15-20 minutes, grinding the lime powder by adopting hot high-speed airflow at 80-130 ℃ until the powder is screened by a 200-mesh sieve to prepare special lime powder, and the preparation method of the special gypsum powder comprises the following steps: the method comprises the steps of obtaining 80% of gypsum powder, 8% of borax, 7% of quicklime powder and 5% of coal ash, uniformly mixing, pouring into a baking oven, baking in a vacuum state, controlling the baking temperature to be 220-260 ℃, baking for 15-25 minutes, pouring into a ball mill, grinding into powder, adopting hot high-speed air flow mixing grinding at 80-130 ℃, and finally sieving with a 200-mesh sieve to obtain the special gypsum powder, wherein plant ash and plant fiber are respectively processed by the same batch of plants through different procedures, straw powder, flower and plant branch and leaf powder and tree powder which are sieved with a 10-mesh sieve are adopted as raw materials for the plant fiber, and the preparation method of the plant fiber comprises the following steps: pouring plant powder into a rolling device for rolling under the pressure of 3-5 tons, pouring the rolling powder into a stirring device for rapid stirring after rolling for 45-60 minutes, separating the bonded powder, pouring the powder into a screening device, screening by using a 20-mesh sieve, pouring the powder which does not pass through the 20-mesh sieve into the stirring device for stirring and scattering, finally preparing plant fibers, pouring the powder which passes through the 20-mesh sieve into a baking device for baking at the temperature of 320-360 ℃ until the powder is completely carbonized, and regrinding to prepare plant ash;
s2: pouring half of epoxy resin and all polyisocyanate into a reaction kettle for stirring reaction, filling inert gas into the reaction kettle for protection, controlling the temperature at 60-65 ℃ and the rotating speed at 450-520 r/min, and reacting for 5-15 minutes to obtain primary emulsion;
s3: starting ultrasonic waves to vibrate the primary emulsion for 5-15 minutes, dropwise adding glycerol in the vibration process, adding the rest epoxy resin after vibration is completed, raising the temperature to 75-85 ℃, raising the rotating speed to 620-720 r/min, and reacting for 5-15 minutes to obtain a mixed solution;
s4: starting ultrasonic waves to vibrate, slowly adding phosphorus pentoxide and rhodium phosphine complex catalyst in the vibration process, reducing the rotating speed to 320-420 r/min, vibrating for 10-20 min, slowly adding additives and vegetation mixture, controlling the temperature of the additives and the vegetation mixture to be 50-60 ℃, raising the temperature to 105-125 ℃ after all the additives and the vegetation mixture are added, raising the rotation to 420-520 r/min, reacting for 45-60 min, continuing the reaction, starting the ultrasonic waves to vibrate, reducing the rotating speed to 220-320 r/min, and reducing the temperature to 80-95 ℃ to finally prepare emulsion semi-finished products;
s5: pouring the emulsion semi-finished product into a homogenizer, controlling the emulsifying pressure at 45-85 MPa, emulsifying for 1-1.5 hours, and finally preparing the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns.
Referring to fig. 1, embodiment three
In this embodiment, a method for preparing an epoxy emulsion for corrosion-resistant high-pressure pipeline yarns is provided, which comprises the following steps:
s1: the preparation method comprises the steps of preparing materials, namely, 100 parts of epoxy resin, 34 parts of polyisocyanate, 16 parts of glycerol, 13 parts of phosphorus pentoxide, 13 parts of additives, 12 parts of vegetation mixture and 3 parts of rhodium phosphine complex catalyst, wherein the additives comprise special lime powder and special gypsum powder, the vegetation mixture comprises plant ash and plant fibers, the epoxy resin is bisphenol A type epoxy resin, liquid formed by mixing epoxy E51, epoxy E44 and epoxy E20, the proportion of the special lime powder and the special gypsum powder in the additives is controlled to be 45% -55%, and the preparation method of the special lime powder comprises the following steps: selecting proper lime powder, grinding, putting the lime powder into a reaction kettle, stirring at 180-230 ℃ for 15-30 minutes, immediately pouring the lime powder into cooling equipment, cooling the lime powder in an environment of minus 30-minus 20 ℃ for 15-20 minutes, grinding the lime powder by adopting hot high-speed airflow at 80-130 ℃ until the powder is screened by a 200-mesh sieve to prepare special lime powder, and the preparation method of the special gypsum powder comprises the following steps: the method comprises the steps of obtaining 80% of gypsum powder, 8% of borax, 7% of quicklime powder and 5% of coal ash, uniformly mixing, pouring into a baking oven, baking in a vacuum state, controlling the baking temperature to be 220-260 ℃, baking for 15-25 minutes, pouring into a ball mill, grinding into powder, adopting hot high-speed air flow mixing grinding at 80-130 ℃, and finally sieving with a 200-mesh sieve to obtain the special gypsum powder, wherein plant ash and plant fiber are respectively processed by the same batch of plants through different procedures, straw powder, flower and plant branch and leaf powder and tree powder which are sieved with a 10-mesh sieve are adopted as raw materials for the plant fiber, and the preparation method of the plant fiber comprises the following steps: pouring plant powder into a rolling device for rolling under the pressure of 3-5 tons, pouring the rolling powder into a stirring device for rapid stirring after rolling for 45-60 minutes, separating the bonded powder, pouring the powder into a screening device, screening by using a 20-mesh sieve, pouring the powder which does not pass through the 20-mesh sieve into the stirring device for stirring and scattering, finally preparing plant fibers, pouring the powder which passes through the 20-mesh sieve into a baking device for baking at the temperature of 320-360 ℃ until the powder is completely carbonized, and regrinding to prepare plant ash;
s2: pouring half of epoxy resin and all polyisocyanate into a reaction kettle for stirring reaction, filling inert gas into the reaction kettle for protection, controlling the temperature at 60-65 ℃ and the rotating speed at 450-520 r/min, and reacting for 5-15 minutes to obtain primary emulsion;
s3: starting ultrasonic waves to vibrate the primary emulsion for 5-15 minutes, dropwise adding glycerol in the vibration process, adding the rest epoxy resin after vibration is completed, raising the temperature to 75-85 ℃, raising the rotating speed to 620-720 r/min, and reacting for 5-15 minutes to obtain a mixed solution;
s4: starting ultrasonic waves to vibrate, slowly adding phosphorus pentoxide and rhodium phosphine complex catalyst in the vibration process, reducing the rotating speed to 320-420 r/min, vibrating for 10-20 min, slowly adding additives and vegetation mixture, controlling the temperature of the additives and the vegetation mixture to be 50-60 ℃, raising the temperature to 105-125 ℃ after all the additives and the vegetation mixture are added, raising the rotation to 420-520 r/min, reacting for 45-60 min, continuing the reaction, starting the ultrasonic waves to vibrate, reducing the rotating speed to 220-320 r/min, and reducing the temperature to 80-95 ℃ to finally prepare emulsion semi-finished products;
s5: pouring the emulsion semi-finished product into a homogenizer, controlling the emulsifying pressure at 45-85 MPa, emulsifying for 1-1.5 hours, and finally preparing the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns.
Referring to fig. 1, embodiment four
In this embodiment, a method for preparing an epoxy emulsion for corrosion-resistant high-pressure pipeline yarns is provided, which comprises the following steps:
s1: the preparation method comprises the steps of preparing materials, namely, 100 parts of epoxy resin, 34 parts of polyisocyanate, 16 parts of glycerol, 13 parts of phosphorus pentoxide, 11 parts of additives, 12 parts of vegetation mixture and 3 parts of rhodium phosphine complex catalyst, wherein the additives comprise special lime powder and special gypsum powder, the vegetation mixture comprises plant ash and plant fibers, the epoxy resin is bisphenol A type epoxy resin, liquid formed by mixing epoxy E51, epoxy E44 and epoxy E20, the proportion of the special lime powder and the special gypsum powder in the additives is controlled to be 45% -55%, and the preparation method of the special lime powder comprises the following steps: selecting proper lime powder, grinding, putting the lime powder into a reaction kettle, stirring at 180-230 ℃ for 15-30 minutes, immediately pouring the lime powder into cooling equipment, cooling the lime powder in an environment of minus 30-minus 20 ℃ for 15-20 minutes, grinding the lime powder by adopting hot high-speed airflow at 80-130 ℃ until the powder is screened by a 200-mesh sieve to prepare special lime powder, and the preparation method of the special gypsum powder comprises the following steps: the method comprises the steps of obtaining 80% of gypsum powder, 8% of borax, 7% of quicklime powder and 5% of coal ash, uniformly mixing, pouring into a baking oven, baking in a vacuum state, controlling the baking temperature to be 220-260 ℃, baking for 15-25 minutes, pouring into a ball mill, grinding into powder, adopting hot high-speed air flow mixing grinding at 80-130 ℃, and finally sieving with a 200-mesh sieve to obtain the special gypsum powder, wherein plant ash and plant fiber are respectively processed by the same batch of plants through different procedures, straw powder, flower and plant branch and leaf powder and tree powder which are sieved with a 10-mesh sieve are adopted as raw materials for the plant fiber, and the preparation method of the plant fiber comprises the following steps: pouring plant powder into a rolling device for rolling under the pressure of 3-5 tons, pouring the rolling powder into a stirring device for rapid stirring after rolling for 45-60 minutes, separating the bonded powder, pouring the powder into a screening device, screening by using a 20-mesh sieve, pouring the powder which does not pass through the 20-mesh sieve into the stirring device for stirring and scattering, finally preparing plant fibers, pouring the powder which passes through the 20-mesh sieve into a baking device for baking at the temperature of 320-360 ℃ until the powder is completely carbonized, and regrinding to prepare plant ash;
s2: pouring half of epoxy resin and all polyisocyanate into a reaction kettle for stirring reaction, filling inert gas into the reaction kettle for protection, controlling the temperature at 60-65 ℃ and the rotating speed at 450-520 r/min, and reacting for 5-15 minutes to obtain primary emulsion;
s3: starting ultrasonic waves to vibrate the primary emulsion for 5-15 minutes, dropwise adding glycerol in the vibration process, adding the rest epoxy resin after vibration is completed, raising the temperature to 75-85 ℃, raising the rotating speed to 620-720 r/min, and reacting for 5-15 minutes to obtain a mixed solution;
s4: starting ultrasonic waves to vibrate, slowly adding phosphorus pentoxide and rhodium phosphine complex catalyst in the vibration process, reducing the rotating speed to 320-420 r/min, vibrating for 10-20 min, slowly adding additives and vegetation mixture, controlling the temperature of the additives and the vegetation mixture to be 50-60 ℃, raising the temperature to 105-125 ℃ after all the additives and the vegetation mixture are added, raising the rotation to 420-520 r/min, reacting for 45-60 min, continuing the reaction, starting the ultrasonic waves to vibrate, reducing the rotating speed to 220-320 r/min, and reducing the temperature to 80-95 ℃ to finally prepare emulsion semi-finished products;
s5: pouring the emulsion semi-finished product into a homogenizer, controlling the emulsifying pressure at 45-85 MPa, emulsifying for 1-1.5 hours, and finally preparing the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns.
Referring to fig. 1, embodiment five
In this embodiment, a method for preparing an epoxy emulsion for corrosion-resistant high-pressure pipeline yarns is provided, which comprises the following steps:
s1: the preparation method comprises the steps of preparing materials, namely, 100 parts of epoxy resin, 30 parts of polyisocyanate, 15 parts of glycerol, 10 parts of phosphorus pentoxide, 10 parts of additives, 10 parts of vegetation mixture and 2 parts of rhodium phosphine complex catalyst, wherein the additives comprise special lime powder and special gypsum powder, the vegetation mixture comprises plant ash and plant fibers, the epoxy resin is bisphenol A type epoxy resin, liquid formed by mixing epoxy E51, epoxy E44 and epoxy E20, the proportion of the special lime powder and the special gypsum powder in the additives is controlled to be 45% -55%, and the preparation method of the special lime powder comprises the following steps: selecting proper lime powder, grinding, putting the lime powder into a reaction kettle, stirring at 180-230 ℃ for 15-30 minutes, immediately pouring the lime powder into cooling equipment, cooling the lime powder in an environment of minus 30-minus 20 ℃ for 15-20 minutes, grinding the lime powder by adopting hot high-speed airflow at 80-130 ℃ until the powder is screened by a 200-mesh sieve to prepare special lime powder, and the preparation method of the special gypsum powder comprises the following steps: the method comprises the steps of obtaining 80% of gypsum powder, 8% of borax, 7% of quicklime powder and 5% of coal ash, uniformly mixing, pouring into a baking oven, baking in a vacuum state, controlling the baking temperature to be 220-260 ℃, baking for 15-25 minutes, pouring into a ball mill, grinding into powder, adopting hot high-speed air flow mixing grinding at 80-130 ℃, and finally sieving with a 200-mesh sieve to obtain the special gypsum powder, wherein plant ash and plant fiber are respectively processed by the same batch of plants through different procedures, straw powder, flower and plant branch and leaf powder and tree powder which are sieved with a 10-mesh sieve are adopted as raw materials for the plant fiber, and the preparation method of the plant fiber comprises the following steps: pouring plant powder into a rolling device for rolling under the pressure of 3-5 tons, pouring the rolling powder into a stirring device for rapid stirring after rolling for 45-60 minutes, separating the bonded powder, pouring the powder into a screening device, screening by using a 20-mesh sieve, pouring the powder which does not pass through the 20-mesh sieve into the stirring device for stirring and scattering, finally preparing plant fibers, pouring the powder which passes through the 20-mesh sieve into a baking device for baking at the temperature of 320-360 ℃ until the powder is completely carbonized, and regrinding to prepare plant ash;
s2: pouring half of epoxy resin and all polyisocyanate into a reaction kettle for stirring reaction, filling inert gas into the reaction kettle for protection, controlling the temperature at 60-65 ℃ and the rotating speed at 450-520 r/min, and reacting for 5-15 minutes to obtain primary emulsion;
s3: starting ultrasonic waves to vibrate the primary emulsion for 5-15 minutes, dropwise adding glycerol in the vibration process, adding the rest epoxy resin after vibration is completed, raising the temperature to 75-85 ℃, raising the rotating speed to 620-720 r/min, and reacting for 5-15 minutes to obtain a mixed solution;
s4: starting ultrasonic waves to vibrate, slowly adding phosphorus pentoxide and rhodium phosphine complex catalyst in the vibration process, reducing the rotating speed to 320-420 r/min, vibrating for 10-20 min, slowly adding additives and vegetation mixture, controlling the temperature of the additives and the vegetation mixture to be 50-60 ℃, raising the temperature to 105-125 ℃ after all the additives and the vegetation mixture are added, raising the rotation to 420-520 r/min, reacting for 45-60 min, continuing the reaction, starting the ultrasonic waves to vibrate, reducing the rotating speed to 220-320 r/min, and reducing the temperature to 80-95 ℃ to finally prepare emulsion semi-finished products;
s5: pouring the emulsion semi-finished product into a homogenizer, controlling the emulsifying pressure at 45-85 MPa, emulsifying for 1-1.5 hours, and finally preparing the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns.
The epoxy emulsions prepared in examples one to five were compared with the conventional epoxy emulsion and the epoxy emulsions prepared in examples one to five were as follows:
from the above table, it is clear that the corrosion resistance and the scrub resistance of the epoxy emulsion prepared by the invention are obviously improved, and the second best embodiment is implemented.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The preparation method of the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns is characterized by comprising the following steps of:
s1: the preparation method comprises the steps of preparing materials, namely, 100 parts of epoxy resin, 30-40 parts of polyisocyanate, 15-20 parts of glycerol, 10-14 parts of phosphorus pentoxide, 10-15 parts of additives, 10-15 parts of vegetation mixture and 2-5 parts of rhodium phosphine complex catalyst, wherein the additives comprise special lime powder and special gypsum powder, the vegetation mixture comprises plant ash and plant fibers, bisphenol A type epoxy resin is selected as the epoxy resin, liquid formed by mixing epoxy E51, epoxy E44 and epoxy E20 is selected as the epoxy resin, the proportion of the special lime powder and the special gypsum powder in the additives is controlled to be 45% -55%, and the preparation method of the special lime powder comprises the following steps: selecting proper lime powder, grinding, putting the lime powder into a reaction kettle, stirring at 180-230 ℃ for 15-30 minutes, immediately pouring the lime powder into cooling equipment, cooling the lime powder in an environment of minus 30-minus 20 ℃ for 15-20 minutes, grinding the lime powder by adopting hot high-speed airflow at 80-130 ℃ until the powder is screened by a 200-mesh sieve to prepare special lime powder, and the preparation method of the special gypsum powder comprises the following steps: the method comprises the steps of obtaining 80% of gypsum powder, 8% of borax, 7% of quicklime powder and 5% of coal ash, uniformly mixing, pouring into a baking oven, baking in a vacuum state, controlling the baking temperature to be 220-260 ℃, baking for 15-25 minutes, pouring into a ball mill, grinding into powder, adopting hot high-speed air flow mixing grinding at 80-130 ℃, and finally sieving with a 200-mesh sieve to obtain the special gypsum powder, wherein plant ash and plant fiber are respectively processed by the same batch of plants through different procedures, straw powder, flower and plant branch and leaf powder and tree powder which are sieved with a 10-mesh sieve are adopted as raw materials for the plant fiber, and the preparation method of the plant fiber comprises the following steps: pouring plant powder into a rolling device for rolling under the pressure of 3-5 tons, pouring the rolling powder into a stirring device for rapid stirring after rolling for 45-60 minutes, separating the bonded powder, pouring the powder into a screening device, screening by using a 20-mesh sieve, pouring the powder which does not pass through the 20-mesh sieve into the stirring device for stirring and scattering, finally preparing plant fibers, pouring the powder which passes through the 20-mesh sieve into a baking device for baking at the temperature of 320-360 ℃ until the powder is completely carbonized, and regrinding to prepare plant ash;
s2: pouring half of epoxy resin and all polyisocyanate into a reaction kettle for stirring reaction, and filling inert gas into the reaction kettle for protection to prepare primary emulsion;
s3: starting ultrasonic waves to vibrate the primary emulsion for 5-15 minutes, dropwise adding glycerol in the vibration process, adding the rest epoxy resin after vibration is completed, raising the temperature to 75-85 ℃, raising the rotating speed to 620-720 r/min, and reacting for 5-15 minutes to obtain a mixed solution;
s4: starting ultrasonic waves to vibrate, slowly adding phosphorus pentoxide and rhodium phosphine complex catalyst in the vibration process, reducing the rotating speed to 320-420 r/min, vibrating for 10-20 min, slowly adding additives and vegetation mixture, controlling the temperature of the additives and the vegetation mixture to be 50-60 ℃, raising the temperature to 105-125 ℃ after all the additives and the vegetation mixture are added, raising the rotation to 420-520 r/min, reacting for 45-60 min, and continuing to react to finally obtain an emulsion semi-finished product;
s5: pouring the emulsion semi-finished product into a homogenizer, controlling the emulsifying pressure at 45-85 MPa, emulsifying for 1-1.5 hours, and finally preparing the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns.
2. The method for preparing the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns, which is disclosed in claim 1, is characterized in that in the step S2, the temperature is controlled to be 60-65 ℃, the rotating speed is controlled to be 450-520 r/min, and the reaction is carried out for 5-15 minutes.
3. The method for preparing the epoxy emulsion for the corrosion-resistant high-pressure pipeline yarns, which is characterized in that in the step S4, when the reaction is continued, ultrasonic waves are started to vibrate, the rotating speed is reduced to 220 r/min-320 r/min, and the temperature is reduced to 80-95 ℃.
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