Mortar pump impeller resistant to fluid medium impact damage and preparation method of mortar pump impeller

Abstract

The invention relates to the technical field of mortar pumps, and discloses a fluid medium impact damage resistant mortar pump impeller and a preparation method thereof, the fluid medium impact damage resistant mortar pump impeller is prepared from the following components: a copolymer, grafted chlorinated polyethylene resin, nano silicon dioxide, polystyrene, glass fiber, stearic acid, trimethylolpropane trimethacrylate, ABS resin, tetra [beta-(3, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, the preparation method comprises the following steps: adding 2, 3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester and poly (butylene succinate); the mortar pump impeller prepared by the invention has excellent mechanical properties, particularly the impact resistance is greatly improved, and the fluid medium impact resistance of the mortar pump impeller can be remarkably improved by improving the impact resistance of the mortar pump impeller, so that the occurrence of fluid medium impact damage can be effectively reduced, and the service life of the mortar pump impeller is prolonged. Therefore, the service life of the impeller of the mortar pump is greatly prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of mortar pumps, and in particular to a mortar pump impeller resistant to damage by fluid medium impact and a preparation method thereof. Background Art

[0002] A pump is a fluid machine that transports liquid or increases the energy of liquid. Among all types of pumps, the single-stage single-suction centrifugal pump is the most widely used, and mortar pump is one of them.

[0003] Mortar pumps are used in spraying operations due to their wide construction range and low cost. Mortar pumps can be used to transport corrosive media containing fine particles, thus being widely used.

[0004] The impeller is an important component in the mortar pump. Since the mortar pump mainly transports fluid media, and the impeller rotates at high speed during operation, it will be continuously impacted by the fluid medium. After a long period of impact, the fluid medium will be damaged. As the mortar pump continues to work, the impact damage continues to increase, which can easily cause the impeller to break, thereby significantly shortening the working life of the impeller.

[0005] Based on this, we proposed a mortar pump impeller that is resistant to fluid medium impact damage, hoping to solve the shortcomings of the existing technology. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a mortar pump impeller resistant to damage from fluid medium impact and a preparation method thereof.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0010] A mortar pump impeller resistant to fluid medium impact damage comprises the following components by weight: 12-16 parts of copolymer, 20-25 parts of grafted chlorinated polyethylene resin, 30-38 parts of nano silicon dioxide, 65-80 parts of polystyrene, 2-4 parts of glass fiber, 1.5-2.5 parts of stearic acid, 1-3 parts of trimethylolpropane trimethacrylate, 1-3 parts of ABS resin, 2-3 parts of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate], and 2-5 parts of polybutylene succinate;

[0011] The copolymer is a binary copolymer;

[0012] Wherein, the binary copolymer is a butadiene-styrene binary copolymer resin.

[0013] As a further technical solution, the preparation method of the grafted chlorinated polyethylene resin is:

[0014] Adding methyl methacrylate and maleic anhydride to the solvent, stirring and mixing evenly to obtain a mixed dispersion;

[0015] Add the mixed dispersion into the reactor, introduce inert gas into the reactor, and exhaust the air in the reactor;

[0016] Add chlorinated polyethylene powder into the reactor, then adjust the temperature to 115°C and stir for 30 minutes;

[0017] Continue to add hydroxymethyl cellulose and initiator into the reactor, adjust the temperature to 128°C, stir and react at a speed of 200 r / min for 2 hours, then cool to 80°C, keep warm for 4 hours, and then discharge to obtain a mixed material;

[0018] The mixed material is subjected to reduced pressure distillation to remove the solvent, and then washed and dried to constant weight to obtain grafted chlorinated polyethylene.

[0019] As a further technical solution, the mixing ratio of methyl methacrylate, maleic anhydride and solvent is 12g:5g:200mL.

[0020] As a further technical solution: the solvent is toluene.

[0021] As a further technical solution: the mixing ratio of the mixed dispersion, chlorinated polyethylene powder, hydroxymethyl cellulose and initiator is 200mL:55g:3g:1g.

[0022] As a further technical solution, the initiator is benzoyl peroxide.

[0023] As a further technical solution, the inert gas is any one of nitrogen, neon and helium.

[0024] As a further technical solution: the weight ratio of the trimethylolpropane trimethacrylate to the ABS resin is 1:1.

[0025] As a further technical solution: the average diameter of the glass fiber is 25 μm.

[0026] A method for preparing a mortar pump impeller resistant to fluid medium impact damage, comprising:

[0027] The following components were weighed in parts by weight: copolymer, grafted chlorinated polyethylene resin, nano-silica, polystyrene, glass fiber, stearic acid, trimethylolpropane trimethacrylate, ABS resin, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and polybutylene succinate, and added to a mixer in sequence for stirring and mixing. The stirring speed in the mixer was 500 r / min, and the stirring time was 30 min. The mixture was then dried at 60° C. for 2 hours. After drying, the mixture was added to a twin-screw extruder for melt extrusion, and then added to an injection molding machine for injection molding to obtain a mortar pump impeller.

[0028] (III) Beneficial effects

[0029] Compared with the prior art, the present invention provides a mortar pump impeller that is resistant to fluid medium impact damage and has the following beneficial effects:

[0030] The mortar pump impeller prepared by the present invention has excellent mechanical properties, especially the impact resistance is greatly improved. By improving the impact resistance of the mortar pump impeller, the mortar pump impeller's resistance to fluid medium impact can be significantly improved, thereby effectively reducing the occurrence of fluid medium impact damage and greatly improving the service life of the mortar pump impeller.

[0031] The present invention grafts and modifies the chlorinated polyethylene resin. After the grafted chlorinated polyethylene resin prepared by the present invention is introduced into the mortar pump impeller, the impact resistance of the mortar pump impeller can be greatly improved, and more energy can be absorbed during the impact process, thereby reducing the impact of impact damage.

[0032] The present invention introduces a certain amount of glass fiber, which is evenly dispersed in the mortar pump impeller. When impacted, the glass fiber disperses the impact stress, thereby generating yield deformation and absorbing huge energy, thereby further improving and enhancing the impact resistance of the mortar pump impeller. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] A mortar pump impeller resistant to fluid medium impact damage comprises the following components by weight: 12 parts of copolymer, 20 parts of grafted chlorinated polyethylene resin, 30 parts of nano silicon dioxide, 65 parts of polystyrene, 2 parts of glass fiber, 1.5 parts of stearic acid, 1 part of trimethylolpropane trimethacrylate, 1 part of ABS resin, 2 parts of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, and 2 parts of polybutylene succinate;

[0036] The copolymer is a binary copolymer;

[0037] Wherein, the binary copolymer is a butadiene-styrene binary copolymer resin.

[0038] The preparation method of grafted chlorinated polyethylene resin is as follows:

[0039] Adding methyl methacrylate and maleic anhydride to toluene, stirring and mixing evenly to obtain a mixed dispersion;

[0040] Add the mixed dispersion into the reactor, introduce nitrogen into the reactor, and exhaust the air in the reactor;

[0041] Add chlorinated polyethylene powder into the reactor, then adjust the temperature to 115°C and stir for 30 minutes;

[0042] Continue to add hydroxymethyl cellulose and benzoyl peroxide into the reactor, adjust the temperature to 128°C, stir and react at a speed of 200 r / min for 2 hours, then cool to 80°C, keep warm for 4 hours, and then discharge to obtain a mixed material;

[0043] The mixture is subjected to reduced pressure distillation to remove toluene, and then washed and dried to constant weight to obtain grafted chlorinated polyethylene.

[0044] The mixing ratio of methyl methacrylate, maleic anhydride and solvent is 12g:5g:200mL.

[0045] The mixing ratio of the mixed dispersion, chlorinated polyethylene powder, hydroxymethyl cellulose and benzoyl peroxide is 200 mL: 55 g: 3 g: 1 g.

[0046] The weight ratio of trimethylolpropane trimethacrylate to ABS resin is 1:1.

[0047] The average diameter of the glass fibers is 25 μm.

[0048] A method for preparing a mortar pump impeller resistant to fluid medium impact damage, comprising:

[0049] The following components were weighed in parts by weight: copolymer, grafted chlorinated polyethylene resin, nano-silica, polystyrene, glass fiber, stearic acid, trimethylolpropane trimethacrylate, ABS resin, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and polybutylene succinate, and added to a mixer in sequence for stirring and mixing. The stirring speed in the mixer was 500 r / min, and the stirring time was 30 min. The mixture was then dried at 60° C. for 2 hours. After drying, the mixture was added to a twin-screw extruder for melt extrusion, and then added to an injection molding machine for injection molding to obtain a mortar pump impeller.

[0050] Example 2

[0051] A mortar pump impeller resistant to fluid medium impact damage comprises the following components by weight: 14 parts of copolymer, 22 parts of grafted chlorinated polyethylene resin, 35 parts of nano silicon dioxide, 72 parts of polystyrene, 3 parts of glass fiber, 2 parts of stearic acid, 2 parts of trimethylolpropane trimethacrylate, 2 parts of ABS resin, 2.4 parts of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, and 3 parts of polybutylene succinate;

[0052] The copolymer is a binary copolymer;

[0053] Wherein, the binary copolymer is a butadiene-styrene binary copolymer resin.

[0054] The preparation method of grafted chlorinated polyethylene resin is as follows:

[0055] Adding methyl methacrylate and maleic anhydride to toluene, stirring and mixing evenly to obtain a mixed dispersion;

[0056] Add the mixed dispersion into the reactor, introduce nitrogen into the reactor, and exhaust the air in the reactor;

[0057] Add chlorinated polyethylene powder into the reactor, then adjust the temperature to 115°C and stir for 30 minutes;

[0058] Continue to add hydroxymethyl cellulose and benzoyl peroxide into the reactor, adjust the temperature to 128°C, stir and react at a speed of 200 r / min for 2 hours, then cool to 80°C, keep warm for 4 hours, and then discharge to obtain a mixed material;

[0059] The mixture is subjected to reduced pressure distillation to remove toluene, and then washed and dried to constant weight to obtain grafted chlorinated polyethylene.

[0060] The mixing ratio of methyl methacrylate, maleic anhydride and solvent is 12g:5g:200mL.

[0061] The mixing ratio of the mixed dispersion, chlorinated polyethylene powder, hydroxymethyl cellulose and benzoyl peroxide is 200 mL: 55 g: 3 g: 1 g.

[0062] The weight ratio of trimethylolpropane trimethacrylate to ABS resin is 1:1.

[0063] The average diameter of the glass fibers is 25 μm.

[0064] A method for preparing a mortar pump impeller resistant to fluid medium impact damage, comprising:

[0065] The following components were weighed in parts by weight: copolymer, grafted chlorinated polyethylene resin, nano-silica, polystyrene, glass fiber, stearic acid, trimethylolpropane trimethacrylate, ABS resin, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and polybutylene succinate, and added to a mixer in sequence for stirring and mixing. The stirring speed in the mixer was 500 r / min, and the stirring time was 30 min. The mixture was then dried at 60° C. for 2 hours. After drying, the mixture was added to a twin-screw extruder for melt extrusion, and then added to an injection molding machine for injection molding to obtain a mortar pump impeller.

[0066] Example 3

[0067] A mortar pump impeller resistant to fluid medium impact damage comprises the following components by weight: 15 parts of copolymer, 24 parts of grafted chlorinated polyethylene resin, 33 parts of nano silicon dioxide, 68 parts of polystyrene, 3 parts of glass fiber, 1.7 parts of stearic acid, 2 parts of trimethylolpropane trimethacrylate, 2 parts of ABS resin, 2.8 parts of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, and 4 parts of polybutylene succinate;

[0068] The copolymer is a binary copolymer;

[0069] Wherein, the binary copolymer is a butadiene-styrene binary copolymer resin.

[0070] The preparation method of grafted chlorinated polyethylene resin is as follows:

[0071] Adding methyl methacrylate and maleic anhydride to toluene, stirring and mixing evenly to obtain a mixed dispersion;

[0072] Add the mixed dispersion into the reactor, introduce nitrogen into the reactor, and exhaust the air in the reactor;

[0073] Add chlorinated polyethylene powder into the reactor, then adjust the temperature to 115°C and stir for 30 minutes;

[0074] Continue to add hydroxymethyl cellulose and benzoyl peroxide into the reactor, adjust the temperature to 128°C, stir and react at a speed of 200 r / min for 2 hours, then cool to 80°C, keep warm for 4 hours, and then discharge to obtain a mixed material;

[0075] The mixture is subjected to reduced pressure distillation to remove toluene, and then washed and dried to constant weight to obtain grafted chlorinated polyethylene.

[0076] The mixing ratio of methyl methacrylate, maleic anhydride and solvent is 12g:5g:200mL.

[0077] The mixing ratio of the mixed dispersion, chlorinated polyethylene powder, hydroxymethyl cellulose and benzoyl peroxide is 200 mL: 55 g: 3 g: 1 g.

[0078] The weight ratio of trimethylolpropane trimethacrylate to ABS resin is 1:1.

[0079] The average diameter of the glass fibers is 25 μm.

[0080] A method for preparing a mortar pump impeller resistant to fluid medium impact damage, comprising:

[0081] The following components were weighed in parts by weight: copolymer, grafted chlorinated polyethylene resin, nano-silica, polystyrene, glass fiber, stearic acid, trimethylolpropane trimethacrylate, ABS resin, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and polybutylene succinate, and added to a mixer in sequence for stirring and mixing. The stirring speed in the mixer was 500 r / min, and the stirring time was 30 min. The mixture was then dried at 60° C. for 2 hours. After drying, the mixture was added to a twin-screw extruder for melt extrusion, and then added to an injection molding machine for injection molding to obtain a mortar pump impeller.

[0082] Example 4

[0083] A mortar pump impeller resistant to fluid medium impact damage comprises the following components by weight: 16 parts of copolymer, 25 parts of grafted chlorinated polyethylene resin, 38 parts of nano silicon dioxide, 80 parts of polystyrene, 4 parts of glass fiber, 2.5 parts of stearic acid, 3 parts of trimethylolpropane trimethacrylate, 3 parts of ABS resin, 3 parts of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate], and 5 parts of polybutylene succinate;

[0084] The copolymer is a binary copolymer;

[0085] Wherein, the binary copolymer is a butadiene-styrene binary copolymer resin.

[0086] The preparation method of grafted chlorinated polyethylene resin is as follows:

[0087] Adding methyl methacrylate and maleic anhydride to toluene, stirring and mixing evenly to obtain a mixed dispersion;

[0088] Add the mixed dispersion into the reactor, introduce nitrogen into the reactor, and exhaust the air in the reactor;

[0089] Add chlorinated polyethylene powder into the reactor, then adjust the temperature to 115°C and stir for 30 minutes;

[0090] Continue to add hydroxymethyl cellulose and benzoyl peroxide into the reactor, adjust the temperature to 128°C, stir and react at a speed of 200 r / min for 2 hours, then cool to 80°C, keep warm for 4 hours, and then discharge to obtain a mixed material;

[0091] The mixture is subjected to reduced pressure distillation to remove toluene, and then washed and dried to constant weight to obtain grafted chlorinated polyethylene.

[0092] The mixing ratio of methyl methacrylate, maleic anhydride and solvent is 12g:5g:200mL.

[0093] The mixing ratio of the mixed dispersion, chlorinated polyethylene powder, hydroxymethyl cellulose and benzoyl peroxide is 200 mL: 55 g: 3 g: 1 g.

[0094] The weight ratio of trimethylolpropane trimethacrylate to ABS resin is 1:1.

[0095] The average diameter of the glass fibers is 25 μm.

[0096] A method for preparing a mortar pump impeller resistant to fluid medium impact damage, comprising:

[0097] The following components were weighed in parts by weight: copolymer, grafted chlorinated polyethylene resin, nano-silica, polystyrene, glass fiber, stearic acid, trimethylolpropane trimethacrylate, ABS resin, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and polybutylene succinate, and added to a mixer in sequence for stirring and mixing. The stirring speed in the mixer was 500 r / min, and the stirring time was 30 min. The mixture was then dried at 60° C. for 2 hours. After drying, the mixture was added to a twin-screw extruder for melt extrusion, and then added to an injection molding machine for injection molding to obtain a mortar pump impeller.

[0098] Comparative Example 1

[0099] On the basis of Example 1, no grafted chlorinated polyethylene resin is added, and the rest of the technical scheme is the same as that of Example 1.

[0100] test

[0101] The notched impact strength of the blended strips was tested using an AJU-22 cantilever impact tester for the samples of the embodiment and the comparative example:

[0102] Table 1

[0103] Impact strength J / m Example 1 1285 Example 2 1267 Example 3 1273 Example 4 1281 Comparative Example 1 925

[0104] It can be seen from Table 1 that the impact strength of the impeller prepared by the present invention is greatly improved.

[0105] Based on the sample of Example 1, the effects of different weight portions of grafted chlorinated polyethylene resin on the impact strength of the impeller were compared;

[0106] Table 2

[0107]

[0108] It can be seen from Table 2 that with the increase in the amount of grafted chlorinated polyethylene resin added, the impact strength of the impeller first increases and then decreases.

[0109] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mortar pump impeller resistant to fluid medium impact damage, characterized in that: The following ingredients are included by weight: 12-16 parts of copolymer, 20-25 parts of grafted chlorinated polyethylene resin, 30-38 parts of nano silicon dioxide, 65-80 parts of polystyrene, 2-4 parts of glass fiber, 1.5-2.5 parts of stearic acid, 1-3 parts of trimethylolpropane trimethacrylate, 1-3 parts of ABS resin, 2-3 parts of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and 2-5 parts of polybutylene succinate; The copolymer is a binary copolymer; Wherein, the binary copolymer is a butadiene-styrene binary copolymer resin.

2. A mortar pump impeller resistant to fluid medium impact damage according to claim 1, characterized in that: The preparation method of the grafted chlorinated polyethylene resin is as follows: Adding methyl methacrylate and maleic anhydride to the solvent, stirring and mixing evenly to obtain a mixed dispersion; Add the mixed dispersion into the reactor, introduce inert gas into the reactor, and exhaust the air in the reactor; Add chlorinated polyethylene powder into the reactor, adjust the temperature to 115°C, and stir for 30 minutes; Continue to add hydroxymethyl cellulose and initiator into the reactor, adjust the temperature to 128°C, stir and react at a speed of 200 r / min for 2 hours, then cool to 80°C, keep warm for 4 hours, and then discharge to obtain a mixed material; The mixed material is subjected to reduced pressure distillation to remove the solvent, and then washed and dried to constant weight to obtain grafted chlorinated polyethylene.

3. A mortar pump impeller resistant to fluid medium impact damage according to claim 2, characterized in that: The mixing ratio of the methyl methacrylate, maleic anhydride and solvent is 12g:5g:200mL.

4. A mortar pump impeller resistant to fluid medium impact damage according to claim 3, characterized in that: The solvent is toluene.

5. The mortar pump impeller resistant to fluid medium impact damage according to claim 2, characterized in that: The mixing ratio of the mixed dispersion, chlorinated polyethylene powder, hydroxymethyl cellulose and initiator is 200 mL: 55 g: 3 g: 1 g.

6. A mortar pump impeller resistant to fluid medium impact damage according to claim 5, characterized in that: The initiator is benzoyl peroxide.

7. The mortar pump impeller resistant to fluid medium impact damage according to claim 2, characterized in that: The inert gas is any one of nitrogen, neon and helium.

8. The mortar pump impeller resistant to fluid medium impact damage according to claim 1, characterized in that: The weight ratio of the trimethylolpropane trimethacrylate to the ABS resin is 1:

1.

9. The mortar pump impeller resistant to fluid medium impact damage according to claim 1, characterized in that: The average diameter of the glass fibers is 25 μm.

10. The method for preparing a mortar pump impeller resistant to fluid medium impact damage according to claim 1, characterized in that: include: The following components were weighed in parts by weight: copolymer, grafted chlorinated polyethylene resin, nano-silica, polystyrene, glass fiber, stearic acid, trimethylolpropane trimethacrylate, ABS resin, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], and polybutylene succinate, and added to a mixer in sequence for stirring and mixing. The stirring speed in the mixer was 500 r / min, and the stirring time was 30 min. The mixture was then dried at 60° C. for 2 hours. After drying, the mixture was added to a twin-screw extruder for melt extrusion, and then added to an injection molding machine for injection molding to obtain a mortar pump impeller.

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