WO2022041931A1 - 一种渣浆泵内衬材料的制备方法 - Google Patents

一种渣浆泵内衬材料的制备方法 Download PDF

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Publication number
WO2022041931A1
WO2022041931A1 PCT/CN2021/099556 CN2021099556W WO2022041931A1 WO 2022041931 A1 WO2022041931 A1 WO 2022041931A1 CN 2021099556 W CN2021099556 W CN 2021099556W WO 2022041931 A1 WO2022041931 A1 WO 2022041931A1
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parts
weight
lining material
acid
silicone rubber
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PCT/CN2021/099556
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English (en)
French (fr)
Inventor
何祥炎
张彦明
杨文琪
崇超
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三联泵业股份有限公司
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Publication of WO2022041931A1 publication Critical patent/WO2022041931A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L85/00—Compositions of macromolecular compounds obtained by reactions forming a linkage in the main chain of the macromolecule containing atoms other than silicon, sulfur, nitrogen, oxygen and carbon; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G79/00—Macromolecular compounds obtained by reactions forming a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon with or without the latter elements in the main chain of the macromolecule
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Definitions

  • the invention belongs to the technical field of slurry pumps, and in particular relates to a preparation method of an inner lining material of a slurry pump.
  • Slurry pumps can be widely used in electric power, metallurgy, coal, building materials and other industries to transport slurries containing solid particles, such as hydraulic ash removal in thermal power plants, slurry transportation in metallurgical beneficiation plants, coal slurry and heavy medium transportation in coal washing plants, etc. Stability will directly affect the normal operation of the entire production system. Because the slurry pump often transports liquid and solid mixed media, such as mortar and slurry, the large amount of solid and hard particulate materials contained in these media not only have strong wear on the flow parts of the slurry pump, but also It is also highly corrosive, which requires that the overcurrent parts must have certain wear resistance and corrosion resistance.
  • a rubber-lined slurry pump that is, by adding a lining material to the pump body of the slurry pump, the functions of corrosion resistance and wear resistance are realized.
  • the lining material can be divided into rubber lining and metal lining. The characteristics of these two lining materials are very different. Specifically, rubber lining is generally better than metal lining in corrosion resistance, but The corrosion resistance is poor; the wear resistance of the metal lining is generally better. Therefore, when selecting a slurry pump, the lining material is generally selected according to the customer's working conditions and slurry composition.
  • a rubber-lined slurry pump can be selected; for iron ore, gold ore and other highly corrosive slurry, a metal-lined slurry pump is preferred.
  • a rubber-lined slurry pump that takes into account wear and corrosion resistance, in order to broaden the general use of slurry pumps in more subdivided fields. Further improve the service life of the slurry pump.
  • the purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a preparation method of a slurry pump lining material.
  • the present invention adopts the following technical solutions to realize:
  • a preparation method of a slurry pump lining material comprising the following steps:
  • step (2) Purify the solution containing the polyorganometallic siloxane polymer prepared in step (1), and then disperse the purified polyorganometallic siloxane polymer and methyl vinyl silicone rubber into a Stir and mix in toluene solvent, add polysiloxane containing silicon hydrogen structure under stirring conditions, add organotin laurate after stirring for 60 minutes, continue stirring and react for 60 minutes, and then cast into the mold, at 80-90
  • the lining material is obtained by curing for 1-3 hours at the temperature of °C.
  • the general formula of the metal alkoxide is: M(OR 1 ) n (I);
  • M represents a metal, selected from one of zinc, magnesium, aluminum, titanium, tantalum or zirconium;
  • R 1 represents an alkyl group with 1 to 5 carbon atoms
  • n is an integer of 2 to 5, preferably 3 or 4.
  • the acid catalyst is selected from at least one of hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, acetic acid, oxalic acid and polycarboxylic acid.
  • the lining material is prepared from the following raw materials in parts by weight: 20-40 parts by weight of methyl vinyl silicone rubber, 10-30 parts by weight of vinyltrimethoxysilane, and 10-30 parts by weight of tetramethoxysilane parts by weight, 40-55 parts by weight of metal alkoxides, 2-10 parts by weight of acid catalyst, 10-35 parts by weight of deionized water, 120-200 parts by weight of solvent, 0.01-0.08 parts by weight of organotin laurate, containing silicon hydrogen 2-5 parts by weight of structured polysiloxane.
  • the lining material is prepared from the following raw materials in parts by weight: 25-30 parts by weight of methyl vinyl silicone rubber, 15-25 parts by weight of vinyltrimethoxysilane, 15-25 parts by weight of tetramethoxysilane parts by weight, 45-50 parts by weight of metal alkoxide, 4-7 parts by weight of acid catalyst, 15-25 parts by weight of deionized water, 150-180 parts by weight of solvent, 0.03-0.06 parts by weight of organotin laurate, containing silicon hydrogen Structured polysiloxane 3-4 parts by weight.
  • the lining material is prepared from the following raw materials in parts by weight: 28 parts by weight of methyl vinyl silicone rubber, 20 parts by weight of vinyltrimethoxysilane, 20 parts by weight of tetramethoxysilane, 20 parts by weight of alkoxy 47 parts by weight of metal, 5 parts by weight of acid catalyst, 20 parts by weight of deionized water, 170 parts by weight of solvent, 0.05 part by weight of organotin laurate, and 3 parts by weight of polysiloxane containing silicon hydrogen structure.
  • the present invention has the following technical effects:
  • the preparation method of the slurry pump lining material provided by the present invention uses vinyltrimethoxysilane, tetramethoxysilane and metal alkoxide as raw materials, and undergoes hydrolysis and condensation reaction to obtain a polyorganometallic siloxane structure.
  • the prepared polyorganometallic siloxane structure contains Si-O structure, which is similar to the structure in silicone rubber, which increases the miscibility effect of the two.
  • the silyl hydroxyl group contained in the polyorganometallic siloxane structure It can form a wide network structure with silicone rubber through hydrogen bonding and van der Waals force.
  • the silicone rubber When the silicone rubber is cured and cross-linked, a dense cross-linked structure is generated, and based on metal doping, it gives the silicone rubber system excellent wear resistance. , Based on the lining material prepared by the method provided by the invention, the functional requirements of wear resistance and corrosion resistance are taken into account, so that the slurry pump can be used for a long time in many harsh environments, and the application range of the slurry pump is broadened.
  • All raw materials in the present invention are not particularly limited in their sources, and can be purchased in the market or prepared according to conventional methods well known to those skilled in the art. All the raw materials in the present invention are not particularly limited in their purity, and the present invention preferably adopts analytical purity or conventional purity used in the field of composite materials.
  • the invention provides a preparation method of a slurry pump lining material, comprising the following steps:
  • step (2) Purify the solution containing the polyorganometallic siloxane polymer prepared in step (1), and then disperse the purified polyorganometallic siloxane polymer and methyl vinyl silicone rubber into a Stir and mix in toluene solvent, add polysiloxane containing silicon hydrogen structure under stirring conditions, add organotin laurate after stirring for 60 minutes, continue stirring and react for 60 minutes, and then cast into the mold, at 80-90
  • the lining material is obtained by curing for 1-3 hours at the temperature of °C.
  • the general formula of the metal alkoxide is: M(OR 1 ) n (I);
  • M represents a metal, selected from one of zinc, magnesium, aluminum, titanium, tantalum or zirconium;
  • R 1 represents an alkyl group having 1 to 5 carbon atoms, and specific examples thereof include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, n-pentyl, and isopentyl. A sort of;
  • n is an integer of 2 to 5, preferably 3 or 4.
  • specific examples of metal alkoxides include titanium tetraethoxide, titanium tetraisopropoxide, and titanium tetra-n-butoxide.
  • the solvent is not particularly limited as long as it can dissolve the reactant and the product. Specifically, toluene can be mentioned.
  • the acid catalyst is selected from at least one of hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, acetic acid, oxalic acid and polycarboxylic acid.
  • the hydrolyzable groups contained in the vinyltrimethoxysilane, tetramethoxysilane and metal alkoxide preferentially undergo hydrolysis reaction, and Further, condensation reaction occurs under the action of acid catalyst to generate a mixed system containing polyorganometallic siloxane structure; further, the polyorganometallic siloxane structure contains Si-O structure, which is combined with the polyorganometallic siloxane in the silicone rubber.
  • the structure is similar, so that the two have good miscibility, and the silicon hydroxyl group contained in the polyorganometallic siloxane structure and the silicone rubber form a wide network structure through hydrogen bonding and van der Waals force, when the silicone rubber is cured and crosslinked. , resulting in a dense cross-linked structure, and based on metal doping, it endows the silicone rubber system with excellent wear resistance.
  • the lining material is used for the lining of the slurry pump, taking into account the functions of wear resistance and corrosion resistance. requirements, so that the slurry pump can be used for a long time in many harsh environments, which broadens the application range of the slurry pump.
  • the content of vinyl groups will affect the crosslinking density of the silicone rubber.
  • the molar content of vinyl groups is 0.1 to 0.2%, more preferably 0.12 to 0.16%, specifically 0.12%, 0.13%, 0.14%, 0.15%, 0.16%.
  • the purpose of purifying the solution containing the polyorganometallic siloxane polymer is to remove the water and acid catalyst therein.
  • the present invention does not have a special limitation on the purification method.
  • a hydrophobic solvent is added to the solution of the oxane polymer for dilution, then it is concentrated in an evaporator, and the organic layer is washed with water for several times to remove the alcohols and water contained.
  • an ion exchange resin can be used to remove the acid catalyst.
  • the amount of the raw material components for preparing the lining material can be selected within a wide range, and preferably, the lining material is prepared from the following raw materials in parts by weight: methyl ethylene 20-40 parts by weight of base silicone rubber, 10-30 parts by weight of vinyltrimethoxysilane, 10-30 parts by weight of tetramethoxysilane, 40-55 parts by weight of metal alkoxide, 2-10 parts by weight of acid catalyst, 10-35 parts by weight of deionized water, 120-200 parts by weight of solvent, 0.01-0.08 parts by weight of organotin laurate, and 2-5 parts by weight of polysiloxane containing silicon hydrogen structure.
  • the lining material is prepared from the following raw materials in parts by weight: 25-30 parts by weight of methyl vinyl silicone rubber, 15-25 parts by weight of vinyltrimethoxysilane, 15-25 parts by weight of tetramethoxysilane 25 parts by weight, 45-50 parts by weight of metal alkoxides, 4-7 parts by weight of acid catalyst, 15-25 parts by weight of deionized water, 150-180 parts by weight of solvent, 0.03-0.06 parts by weight of organotin laurate, containing silicon Hydrogen structure polysiloxane 3-4 parts by weight.
  • the lining material is prepared from the following raw materials in parts by weight: 28 parts by weight of methyl vinyl silicone rubber, 20 parts by weight of vinyltrimethoxysilane, 20 parts by weight of tetramethoxysilane, 47 parts by weight of metal oxy, 5 parts by weight of acid catalyst, 20 parts by weight of deionized water, 170 parts by weight of solvent, 0.05 part by weight of organotin laurate, and 3 parts by weight of polysiloxane containing silicon hydrogen structure.
  • the slurry pump described in the present invention includes a pump body enclosed by two oppositely arranged front shells and rear shells, the pump body has an accommodating space for arranging the impeller, the front shell
  • the inner lining material according to the present invention is arranged on the opposite inner side surfaces of the body and the rear casing.
  • a slurry pump lining material prepared from the following raw materials in parts by weight: 28 parts by weight of methyl vinyl silicone rubber (the molar content of vinyl is 0.15%), 20 parts by weight of vinyl trimethoxysilane, tetramethoxy 20 parts by weight of base silane, 47 parts by weight of titanium tetraethoxide, 5 parts by weight of hydrochloric acid (30%), 20 parts by weight of deionized water, 170 parts by weight of toluene, 0.05 parts by weight of catalyst organotin laurate, crosslinking agent containing silicon 3 parts by weight of hydrogen-structured polysiloxane (trade name KF-99, purchased from Shin-Etsu Chemical Industry Co., Ltd.).
  • the preparation method of the lining material includes:
  • step (2) Purify the solution containing the polyorganometallic siloxane polymer prepared in step (1), and then disperse the purified polyorganometallic siloxane polymer and methyl vinyl silicone rubber into a Stir and mix in the remaining toluene solvent, add polysiloxane containing silicon hydrogen structure under stirring conditions, add organotin laurate after stirring for 60 minutes, continue stirring and react for 60 minutes, and then cast it into a mold, at 85
  • the lining material was obtained by curing at a temperature of °C for 2 hours.
  • a slurry pump lining material which is prepared from the following raw materials in parts by weight: 25 parts by weight of methyl vinyl silicone rubber (the molar content of vinyl is 0.15%), 15 parts by weight of vinyl trimethoxysilane, tetramethoxy 15 parts by weight of base silane, 45 parts by weight of titanium tetraethoxide, 4 parts by weight of hydrochloric acid (30%), 15 parts by weight of deionized water, 150 parts by weight of toluene, 0.03 parts by weight of catalyst organotin laurate, crosslinking agent containing silicon 3 parts by weight of hydrogen-structured polysiloxane (trade name KF-99, purchased from Shin-Etsu Chemical Industry Co., Ltd.).
  • the preparation method of the lining material includes:
  • Deionized water and hydrochloric acid (30%) were mixed, and added dropwise to the mixed system A while stirring. After the dropwise addition was completed, the mixed system was placed under a temperature condition of 30 ° C and stirred for 30 minutes. Concentrating under pressure to obtain a solution containing polyorganometallic siloxane polymer;
  • step (2) Purify the solution containing the polyorganometallic siloxane polymer prepared in step (1), and then disperse the purified polyorganometallic siloxane polymer and methyl vinyl silicone rubber into a Stir and mix in the remaining toluene solvent, add polysiloxane containing silicon hydrogen structure under stirring conditions, add organotin laurate after stirring for 60 minutes, continue stirring and react for 60 minutes, and then cast it into a mold, at 80 The lining material was obtained by curing at a temperature of °C for 2 hours.
  • a slurry pump lining material prepared from the following raw materials in parts by weight: 30 parts by weight of methyl vinyl silicone rubber (the molar content of vinyl is 0.15%), 25 parts by weight of vinyl trimethoxysilane, tetramethoxy 25 parts by weight of base silane, 50 parts by weight of titanium tetraethoxide, 7 parts by weight of hydrochloric acid (30%), 25 parts by weight of deionized water, 180 parts by weight of toluene, 0.06 parts by weight of catalyst organotin laurate, crosslinking agent containing silicon 4 parts by weight of hydrogen-structured polysiloxane (trade name KF-99, purchased from Shin-Etsu Chemical Industry Co., Ltd.).
  • the preparation method of the lining material includes:
  • Deionized water and hydrochloric acid (30%) were mixed, and added dropwise to the mixed system A while stirring. After the dropwise addition was completed, the mixed system was placed under a temperature condition of 30 ° C and stirred for 30 minutes. Concentrating under pressure to obtain a solution containing polyorganometallic siloxane polymer;
  • step (2) Purify the solution containing the polyorganometallic siloxane polymer prepared in step (1), and then disperse the purified polyorganometallic siloxane polymer and methyl vinyl silicone rubber into a Stir and mix in the remaining toluene solvent, add polysiloxane containing silicon hydrogen structure under stirring conditions, add organotin laurate after stirring for 60 minutes, continue stirring and react for 60 minutes, and then cast it into a mold, at 80 The lining material was obtained by curing at a temperature of °C for 2 hours.
  • a slurry pump lining material which is prepared from the following raw materials in parts by weight: 20 parts by weight of methyl vinyl silicone rubber (the molar content of vinyl is 0.15%), 10 parts by weight of vinyl trimethoxysilane, tetramethoxy 10 parts by weight of base silane, 40 parts by weight of titanium tetraethoxide, 2 parts by weight of hydrochloric acid (30%), 10 parts by weight of deionized water, 120 parts by weight of toluene, 0.01 part by weight of catalyst organotin laurate, crosslinking agent containing silicon Hydrogen-structured polysiloxane (trade name KF-99, purchased from Shin-Etsu Chemical Industry Co., Ltd.) 2 parts by weight.
  • the preparation method of the lining material includes:
  • step (2) Purify the solution containing the polyorganometallic siloxane polymer prepared in step (1), and then disperse the purified polyorganometallic siloxane polymer and methyl vinyl silicone rubber into a Stir and mix in the remaining toluene solvent, add polysiloxane containing silicon hydrogen structure under stirring conditions, add organotin laurate after stirring for 60 minutes, continue stirring and react for 60 minutes, and then cast it into a mold, at 90
  • the lining material was obtained by curing at a temperature of °C for 1 hour.
  • a slurry pump lining material prepared from the following raw materials in parts by weight: 40 parts by weight of methyl vinyl silicone rubber (the molar content of vinyl is 0.15%), 30 parts by weight of vinyl trimethoxysilane, tetramethoxy 30 parts by weight of base silane, 55 parts by weight of titanium tetraethoxide, 10 parts by weight of hydrochloric acid (30%), 35 parts by weight of deionized water, 200 parts by weight of toluene, 0.08 parts by weight of catalyst organotin laurate, crosslinking agent containing silicon 5 parts by weight of hydrogen-structured polysiloxane (trade name KF-99, purchased from Shin-Etsu Chemical Industry Co., Ltd.).
  • the preparation method of the lining material includes:
  • step (2) Purify the solution containing the polyorganometallic siloxane polymer prepared in step (1), and then disperse the purified polyorganometallic siloxane polymer and methyl vinyl silicone rubber into a Stir and mix in the remaining toluene solvent, add polysiloxane containing silicon hydrogen structure under stirring conditions, add organotin laurate after stirring for 60 minutes, continue stirring and react for 60 minutes, and then cast it into a mold, at 90
  • the lining material was obtained by curing at a temperature of °C for 1 hour.
  • the lining materials prepared in the above-mentioned embodiments 1-5 were tested, wherein the Shore A Shore hardness was detected according to GB/T531.1-2008; the wear resistance was detected according to the regulations of GB/T 1689-2014; The oil resistance was tested according to GB/T1690-2006; the specific test data are shown in Table 1.
  • the lining material provided by the present invention has excellent wear resistance and corrosion resistance.
  • the model HER-8ST rubber slurry pump is used as the test.
  • Object replace the rubber lining on the inner side of the front casing and the rear casing in the same batch of 3 HER-8ST rubber slurry pumps to the lining material in Example 1 of this application, which is different from the other 3 units in the same batch.
  • the modified HER-8ST rubber slurry pump was put into the same water quality conditions to work.
  • Example 1 of the present application is better than that of the HER-8ST rubber slurry pump.

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Abstract

本发明属于渣浆泵技术领域，具体涉及一种渣浆泵内衬材料的制备方法，包括制备含有聚有机金属硅氧烷聚合物的溶液，以及对其进行纯化处理，再将其与甲基乙烯基硅橡胶分散到甲苯溶剂中搅拌混合，在搅拌的条件下加入含有硅氢结构的聚硅氧烷，搅拌反应60分钟后再加入月桂酸有机锡，继续搅拌反应60分钟，然后浇铸到模具中，在80-90℃的温度下固化1-3小时，得到所述的内衬材料；本发明提供的制备方法，赋予了硅橡胶体系优异的耐磨能力，基于本发明提供的方法制备得到的内衬材料，兼顾了耐磨、耐腐蚀的功能要求，使得渣浆泵在诸多严苛环境下均能长时间使用，拓宽了渣浆泵的应用范围。

Description

一种渣浆泵内衬材料的制备方法 技术领域
本发明属于渣浆泵技术领域，具体涉及一种渣浆泵内衬材料的制备方法。
背景技术
渣浆泵可广泛用于电力、冶金、煤炭、建材等行业输送含有固体颗粒的浆体，如火电厂水力除灰、冶金选矿厂矿浆输送，洗煤厂煤浆及重介输送等，其运行的稳定性会直接影响到全部生产体系的正常运行。由于渣浆泵很多时候输送的都是液体和固态的混合介质，具体如砂浆、渣浆，这些介质中含有的大量固体坚硬颗粒物料不仅对渣浆泵的过流件有很强的磨损，有的还有很强的腐蚀性，这就要求过流件必须具有一定的耐磨性能和耐腐蚀性能。
为此，本领域技术人员提供了一种衬胶渣浆泵，即通过在渣浆泵的泵体中增加内衬材料，实现耐腐、耐磨的功能，一般的，根据渣浆泵的内衬材料划分，可以分为橡胶内衬和金属内衬，这两种内衬材料在特性上有很大的区别，具体的，橡胶内衬在耐腐蚀性上一般比金属内衬的要好，但是耐腐蚀性较差；而金属内衬的耐磨性一般要好，因此，选择渣浆泵的时候，一般会根据客户的工况情况以及渣浆成分来选择内衬的材料。一般对于腐蚀性不是很强的镍、钼等矿的合金，可以选择橡胶内衬的渣浆泵；对于铁矿、金矿等腐蚀性较强的渣浆则优选金属内衬的渣浆泵。针对上述耐腐蚀性和耐磨性的无法兼得，本领域技术人员亟需开发一种兼顾耐磨耐腐的衬胶渣浆泵，以期拓宽渣浆泵在更多细分领域中的通用，进一步提高渣浆泵的使用寿命。
发明内容
本发明的目的在于克服现有技术中的不足，提供一种渣浆泵内衬材料的制备方法。
为了实现上述目的，本发明采用以下技术方案予以实现：
一种渣浆泵内衬材料的制备方法，包括以下步骤：
(1)将乙烯基三甲氧基硅烷、四甲氧基硅烷和烷氧基金属分散到溶剂中， 得到混合体系A；
将去离子水与酸触媒混合，边搅拌边滴加到混合体系A中，滴加完成后，将混合体系置于30-40℃的温度条件下搅拌反应30-60分钟，待反应结束后进行减压浓缩，得到含有聚有机金属硅氧烷聚合物的溶液；
(2)对步骤(1)中制备得到的含有聚有机金属硅氧烷聚合物的溶液进行纯化处理，再将纯化处理后的聚有机金属硅氧烷聚合物与甲基乙烯基硅橡胶分散到甲苯溶剂中搅拌混合，在搅拌的条件下加入含有硅氢结构的聚硅氧烷，搅拌反应60分钟后再加入月桂酸有机锡，继续搅拌反应60分钟，然后浇铸到模具中，在80-90℃的温度下固化1-3小时，得到所述的内衬材料。
优选地，所述烷氧基金属的通式为：M(OR 1) n(I)；
式(I)中，M表示金属，选自锌、镁、铝、钛、钽或锆中的一种；
R 1表示碳原子数为1～5的烷基；
n为2～5的整数，优选为3或4。
优选地，所述的酸触媒选自盐酸、硝酸、硫酸、磷酸、醋酸、草酸、多元羧酸中的至少一种。
优选地，所述的内衬材料包括以下重量份的原料制备得到：甲基乙烯基硅橡胶20-40重量份、乙烯基三甲氧基硅烷10-30重量份、四甲氧基硅烷10-30重量份、烷氧基金属40-55重量份、酸触媒2-10重量份、去离子水10-35重量份、溶剂120-200重量份、月桂酸有机锡0.01-0.08重量份、含有硅氢结构的聚硅氧烷2-5重量份。
优选地，所述的内衬材料包括以下重量份的原料制备得到：甲基乙烯基硅橡胶25-30重量份、乙烯基三甲氧基硅烷15-25重量份、四甲氧基硅烷15-25重量份、烷氧基金属45-50重量份、酸触媒4-7重量份、去离子水15-25重量份、溶剂150-180重量份、月桂酸有机锡0.03-0.06重量份、含有硅氢结构的聚硅氧烷3-4重量份。
优选地，所述的内衬材料包括以下重量份的原料制备得到：甲基乙烯基硅橡胶28重量份、乙烯基三甲氧基硅烷20重量份、四甲氧基硅烷20重量份、烷氧基金属47重量份、酸触媒5重量份、去离子水20重量份、溶剂170重量份、月桂酸有机锡0.05重量份、含有硅氢结构的聚硅氧烷3重量份。
与现有技术相比，本发明具有以下技术效果：
本发明提供的渣浆泵内衬材料的制备方法，利用乙烯基三甲氧基硅烷、四甲氧基硅烷和烷氧基金属作为原料，经加水分解缩合反应，得到了聚有机金属硅氧烷结构，制备得到的聚有机金属硅氧烷结构中含有Si-O结构，与硅橡胶中的结构相似，增加了二者的混溶效果，进一步的，聚有机金属硅氧烷结构中含有的硅羟基能够与硅橡胶通过氢键和范德华力形成广泛的网络结构，当硅橡胶固化交联成型时，生成了致密的交联结构，并且基于金属的掺杂，赋予了硅橡胶体系优异的耐磨能力，基于本发明提供的方法制备得到的内衬材料，兼顾了耐磨、耐腐蚀的功能要求，使得渣浆泵在诸多严苛环境下均能长时间使用，拓宽了渣浆泵的应用范围。
本发明的其他特征和优点将在随后的具体实施方式中予以详细说明。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施例，进一步阐明本发明。
本发明中所有的原料，对其来源没有特别限定，在市场上购买的或按照本领域技术人员熟知的常规方法制备的即可。本发明中所有的原料，对其纯度没有特别限定，本发明优选采用分析纯或复合材料领域使用的常规纯度。
在本文中所披露的范围的端点和任何值都不限于该精确的范围或值，这些范围或值应当理解为包含接近这些范围或值的值。对于数值范围来说，各个范围的端点值之间、各个范围的端点值和单独的点值之间，以及单独的点值之间可以彼此组合而得到一个或多个新的数值范围，这些数值范围应被视为在本文中具体公开。
本发明提供了一种渣浆泵内衬材料的制备方法，包括以下步骤：
(1)将乙烯基三甲氧基硅烷、四甲氧基硅烷和烷氧基金属分散到溶剂中，得到混合体系A；
将去离子水与酸触媒混合，边搅拌边滴加到混合体系A中，滴加完成后，将混合体系置于30-40℃的温度条件下搅拌反应30-60分钟，待反应结束后进行减压浓缩，得到含有聚有机金属硅氧烷聚合物的溶液；
(2)对步骤(1)中制备得到的含有聚有机金属硅氧烷聚合物的溶液进行纯化处理，再将纯化处理后的聚有机金属硅氧烷聚合物与甲基乙烯基硅橡胶分散到甲苯溶剂中搅拌混合，在搅拌的条件下加入含有硅氢结构的聚硅氧烷，搅拌反应60分钟后再加入月桂酸有机锡，继续搅拌反应60分钟，然后浇铸到模具中，在80-90℃的温度下固化1-3小时，得到所述的内衬材料。
本发明中，所述烷氧基金属的通式为：M(OR 1) n(I)；
式(I)中，M表示金属，选自锌、镁、铝、钛、钽或锆中的一种；
R 1表示碳原子数为1～5的烷基，具体可举出如甲基、乙基、正丙基、异丙基、正丁基、异丁基、正戊基、异戊基中的一种；
n为2～5的整数，优选为3或4。本发明中，作为烷氧基金属的可选种类，具体可举出四乙氧基钛、四异丙氧基钛、四正丁氧基钛。
本发明对所述的溶剂并没有特别限制，只要是能够溶解反应物与生成物即可，具体可举出甲苯。
本发明中，所述的酸触媒选自盐酸、硝酸、硫酸、磷酸、醋酸、草酸、多元羧酸中的至少一种。
在本发明提供的技术方案中，所述的乙烯基三甲氧基硅烷、四甲氧基硅烷和烷氧基金属在去离子水的存在下，所含有的可水解基团优先发生水解反应，并进一步在酸触媒的作用下发生缩合反应，生成含有聚有机金属硅氧烷结构的混合体系；进一步的，所述的聚有机金属硅氧烷结构中含有Si-O结构，其与硅橡胶中的结构相似，使二者具有较好的混溶效果，而且聚有机金属硅氧烷结构中含有的硅羟基与硅橡胶通过氢键和范德华力形成广泛的网络结构，当硅橡胶固化交联成型时，生成了致密的交联结构，并且基于金属的掺杂，赋予了硅橡胶体系优异的耐磨能力，将该内衬材料用于渣浆泵的内衬，兼顾了耐磨、耐腐蚀的功能要求，使得渣浆泵在诸多严苛环境下均能长时间使用，拓宽了渣浆泵的应用范围。
本发明中，所述的甲基乙烯基硅橡胶中，乙烯基的含量会影响硅橡胶的交联密度，作为优选的，所述的甲基乙烯基硅橡胶中，乙烯基的摩尔含量为0.1～0.2％，进一步优选为0.12～0.16％，具体可以选择为0.12％、0.13％、0.14％、0.15％、0.16％。
本发明中，对含有聚有机金属硅氧烷聚合物的溶液进行纯化的目的是去除其中的水和酸触媒，本发明对纯化的方法没有特殊的限定，具体的，可在含有聚有机金属硅氧烷聚合物的溶液中加入疏水性溶剂进行稀释，然后以蒸发器浓缩，经水洗涤多次的有机层，以除去含有的醇类和水，此外，可采用离子交换树脂去除酸触媒。
根据本发明，本发明中，制备内衬材料的原料组分的用量可以在较宽的范围内选择，作为优选的，所述的内衬材料包括以下重量份的原料制备得到：：甲基乙烯基硅橡胶20-40重量份、乙烯基三甲氧基硅烷10-30重量份、四甲氧基硅烷10-30重量份、烷氧基金属40-55重量份、酸触媒2-10重量份、去离子水10-35重量份、溶剂120-200重量份、月桂酸有机锡0.01-0.08重量份、含有硅氢结构的聚硅氧烷2-5重量份。
进一步优选的，所述的内衬材料包括以下重量份的原料制备得到：甲基乙烯基硅橡胶25-30重量份、乙烯基三甲氧基硅烷15-25重量份、四甲氧基硅烷15-25重量份、烷氧基金属45-50重量份、酸触媒4-7重量份、去离子水15-25重量份、溶剂150-180重量份、月桂酸有机锡0.03-0.06重量份、含有硅氢结构的聚硅氧烷3-4重量份。
更为优选的，所述的内衬材料包括以下重量份的原料制备得到：甲基乙烯基硅橡胶28重量份、乙烯基三甲氧基硅烷20重量份、四甲氧基硅烷20重量份、烷氧基金属47重量份、酸触媒5重量份、去离子水20重量份、溶剂170重量份、月桂酸有机锡0.05重量份、含有硅氢结构的聚硅氧烷3重量份。
本发明中所述的渣浆泵，包括两相对布置的前壳体和后壳体围合而成的泵体，所述的泵体具有一容置空间用于设置叶轮，所述的前壳体和后壳体相对的内侧面上设置本发明所述的内衬材料。
以下通过具体的实施例对本发明提供的渣浆泵内衬材料的制备方法做出进一步的说明。
实施例1
一种渣浆泵内衬材料，包括以下重量份的原料制备得到：甲基乙烯基硅橡胶(乙烯基摩尔含量为0.15％)28重量份、乙烯基三甲氧基硅烷20重量份、四甲氧基硅烷20重量份、四乙氧基钛47重量份、盐酸(30％)5重量份、去 离子水20重量份、甲苯170重量份、催化剂月桂酸有机锡0.05重量份、交联剂含有硅氢结构的聚硅氧烷(商品牌号KF-99，购自信越化学工业株式会社)3重量份。
其中，所述内衬材料的制备方法包括：
(1)将乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛分散到甲苯中，得到混合体系A，其中，甲苯的用量为乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛总重量份数的2倍；
将去离子水与盐酸(30％)混合，边搅拌边滴加到混合体系A中，滴加完成后，将混合体系置于35℃的温度条件下搅拌反应45分钟，待反应结束后进行减压浓缩，得到含有聚有机金属硅氧烷聚合物的溶液；
(2)对步骤(1)中制备得到的含有聚有机金属硅氧烷聚合物的溶液进行纯化处理，再将纯化处理后的聚有机金属硅氧烷聚合物与甲基乙烯基硅橡胶分散到剩余的甲苯溶剂中搅拌混合，在搅拌的条件下加入含有硅氢结构的聚硅氧烷，搅拌反应60分钟后再加入月桂酸有机锡，继续搅拌反应60分钟，然后浇铸到模具中，在85℃的温度下固化2小时，得到所述的内衬材料。
实施例2
一种渣浆泵内衬材料，包括以下重量份的原料制备得到：甲基乙烯基硅橡胶(乙烯基摩尔含量为0.15％)25重量份、乙烯基三甲氧基硅烷15重量份、四甲氧基硅烷15重量份、四乙氧基钛45重量份、盐酸(30％)4重量份、去离子水15重量份、甲苯150重量份、催化剂月桂酸有机锡0.03重量份、交联剂含有硅氢结构的聚硅氧烷(商品牌号KF-99，购自信越化学工业株式会社)3重量份。
其中，所述内衬材料的制备方法包括：
(1)将乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛分散到甲苯中，得到混合体系A其中，甲苯的用量为乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛总重量份数的2倍；
将去离子水与盐酸(30％)混合，边搅拌边滴加到混合体系A中，滴加完成后，将混合体系置于30℃的温度条件下搅拌反应30分钟，待反应结束后进行 减压浓缩，得到含有聚有机金属硅氧烷聚合物的溶液；
(2)对步骤(1)中制备得到的含有聚有机金属硅氧烷聚合物的溶液进行纯化处理，再将纯化处理后的聚有机金属硅氧烷聚合物与甲基乙烯基硅橡胶分散到剩余的甲苯溶剂中搅拌混合，在搅拌的条件下加入含有硅氢结构的聚硅氧烷，搅拌反应60分钟后再加入月桂酸有机锡，继续搅拌反应60分钟，然后浇铸到模具中，在80℃的温度下固化2小时，得到所述的内衬材料。
实施例3
一种渣浆泵内衬材料，包括以下重量份的原料制备得到：甲基乙烯基硅橡胶(乙烯基摩尔含量为0.15％)30重量份、乙烯基三甲氧基硅烷25重量份、四甲氧基硅烷25重量份、四乙氧基钛50重量份、盐酸(30％)7重量份、去离子水25重量份、甲苯180重量份、催化剂月桂酸有机锡0.06重量份、交联剂含有硅氢结构的聚硅氧烷(商品牌号KF-99，购自信越化学工业株式会社)4重量份。
其中，所述内衬材料的制备方法包括：
(1)将乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛分散到甲苯中，得到混合体系A，其中，甲苯的用量为乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛总重量份数的1.5倍；
将去离子水与盐酸(30％)混合，边搅拌边滴加到混合体系A中，滴加完成后，将混合体系置于30℃的温度条件下搅拌反应30分钟，待反应结束后进行减压浓缩，得到含有聚有机金属硅氧烷聚合物的溶液；
(2)对步骤(1)中制备得到的含有聚有机金属硅氧烷聚合物的溶液进行纯化处理，再将纯化处理后的聚有机金属硅氧烷聚合物与甲基乙烯基硅橡胶分散到剩余的甲苯溶剂中搅拌混合，在搅拌的条件下加入含有硅氢结构的聚硅氧烷，搅拌反应60分钟后再加入月桂酸有机锡，继续搅拌反应60分钟，然后浇铸到模具中，在80℃的温度下固化2小时，得到所述的内衬材料。
实施例4
一种渣浆泵内衬材料，包括以下重量份的原料制备得到：甲基乙烯基硅橡 胶(乙烯基摩尔含量为0.15％)20重量份、乙烯基三甲氧基硅烷10重量份、四甲氧基硅烷10重量份、四乙氧基钛40重量份、盐酸(30％)2重量份、去离子水10重量份、甲苯120重量份、催化剂月桂酸有机锡0.01重量份、交联剂含有硅氢结构的聚硅氧烷(商品牌号KF-99，购自信越化学工业株式会社)2重量份。
其中，所述内衬材料的制备方法包括：
(1)将乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛分散到甲苯中，得到混合体系A，其中，甲苯的用量为乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛总重量份数的2倍；
将去离子水与盐酸(30％)混合，边搅拌边滴加到混合体系A中，滴加完成后，将混合体系置于40℃的温度条件下搅拌反应40分钟，待反应结束后进行减压浓缩，得到含有聚有机金属硅氧烷聚合物的溶液；
(2)对步骤(1)中制备得到的含有聚有机金属硅氧烷聚合物的溶液进行纯化处理，再将纯化处理后的聚有机金属硅氧烷聚合物与甲基乙烯基硅橡胶分散到剩余的甲苯溶剂中搅拌混合，在搅拌的条件下加入含有硅氢结构的聚硅氧烷，搅拌反应60分钟后再加入月桂酸有机锡，继续搅拌反应60分钟，然后浇铸到模具中，在90℃的温度下固化1小时，得到所述的内衬材料。
实施例5
一种渣浆泵内衬材料，包括以下重量份的原料制备得到：甲基乙烯基硅橡胶(乙烯基摩尔含量为0.15％)40重量份、乙烯基三甲氧基硅烷30重量份、四甲氧基硅烷30重量份、四乙氧基钛55重量份、盐酸(30％)10重量份、去离子水35重量份、甲苯200重量份、催化剂月桂酸有机锡0.08重量份、交联剂含有硅氢结构的聚硅氧烷(商品牌号KF-99，购自信越化学工业株式会社)5重量份。
其中，所述内衬材料的制备方法包括：
(1)将乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛分散到甲苯中，得到混合体系A，其中，甲苯的用量为乙烯基三甲氧基硅烷、四甲氧基硅烷和四乙氧基钛总重量份数的1.5倍；
将去离子水与盐酸(30％)混合，边搅拌边滴加到混合体系A中，滴加完成后，将混合体系置于40℃的温度条件下搅拌反应60分钟，待反应结束后进行减压浓缩，得到含有聚有机金属硅氧烷聚合物的溶液；
(2)对步骤(1)中制备得到的含有聚有机金属硅氧烷聚合物的溶液进行纯化处理，再将纯化处理后的聚有机金属硅氧烷聚合物与甲基乙烯基硅橡胶分散到剩余的甲苯溶剂中搅拌混合，在搅拌的条件下加入含有硅氢结构的聚硅氧烷，搅拌反应60分钟后再加入月桂酸有机锡，继续搅拌反应60分钟，然后浇铸到模具中，在90℃的温度下固化1小时，得到所述的内衬材料。
对上述实施例1-5制备得到的内衬材料进行测试，其中，按照GB/T531.1-2008检测邵尔A型邵氏硬度；耐磨性能按照GB/T 1689-2014的规定进行检测；根据GB/T1690-2006测试耐油性能；具体测试数据如表1所示。
表1：实施例1-5制备得到的内衬材料的性能
Figure PCTCN2021099556-appb-000001
基于上述测试数据可以看出，本发明提供的内衬材料，其具有优异的耐磨性能和耐腐性能。
应用实践：
与目前市售的EHR系列耐腐蚀衬胶渣浆泵-橡胶渣浆泵(购自石家庄开发区石泵泵业有限公司)进行对比，具体的，以型号为HER-8ST橡胶渣浆泵作为试验对象，将同一批次的3台HER-8ST橡胶渣浆泵中的前壳体与后壳体内侧面的衬胶更换为本申请实施例1中的内衬材料，与同一批次另外3台不做更改的HER-8ST橡胶渣浆泵放入到同样的水质条件工作，具体水质条件经测量：pH值在4.5-5.0之间，含固量为400g/L，渣浆泵的工作流量均为900m 3/h，在工作1000h后，经拆卸观察，本申请实施例1中的内衬材料的外观磨损情况优于HER-8ST橡胶渣浆泵。
以上显示和描述了本发明的基本原理、主要特征和本发明的特点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明的范围内。本发明要求保护的范围由所附的权利要求书及其等效物界定。

Claims (6)

  1. 一种渣浆泵内衬材料的制备方法，其特征在于，包括以下步骤：
    (1)将乙烯基三甲氧基硅烷、四甲氧基硅烷和烷氧基金属分散到溶剂中，得到混合体系A；
    将去离子水与酸触媒混合，边搅拌边滴加到混合体系A中，滴加完成后，将混合体系置于30-40℃的温度条件下搅拌反应30-60分钟，待反应结束后进行减压浓缩，得到含有聚有机金属硅氧烷聚合物的溶液；
    (2)对步骤(1)中制备得到的含有聚有机金属硅氧烷聚合物的溶液进行纯化处理，再将纯化处理后的聚有机金属硅氧烷聚合物与甲基乙烯基硅橡胶分散到甲苯溶剂中搅拌混合，在搅拌的条件下加入含有硅氢结构的聚硅氧烷，搅拌反应60分钟后再加入月桂酸有机锡，继续搅拌反应60分钟，然后浇铸到模具中，在80-90℃的温度下固化1-3小时，得到所述的内衬材料。
  2. 根据权利要求1所述的方法，其特征在于，所述烷氧基金属的通式为：M(OR 1) n(I)；
    式(I)中，M表示金属，选自锌、镁、铝、钛、钽或锆中的一种；
    R 1表示碳原子数为1～5的烷基；
    n为2～5的整数，优选为3或4。
  3. 根据权利要求1所述的方法，其特征在于，所述的酸触媒选自盐酸、硝酸、硫酸、磷酸、醋酸、草酸、多元羧酸中的至少一种。
  4. 根据权利要求1所述的方法，其特征在于，所述的内衬材料包括以下重量份的原料制备得到：甲基乙烯基硅橡胶20-40重量份、乙烯基三甲氧基硅烷10-30重量份、四甲氧基硅烷10-30重量份、烷氧基金属40-55重量份、酸触媒2-10重量份、去离子水10-35重量份、溶剂120-200重量份、月桂酸有机锡0.01-0.08重量份、含有硅氢结构的聚硅氧烷2-5重量份。
  5. 根据权利要求1所述的方法，其特征在于，所述的内衬材料包括以下重量份的原料制备得到：甲基乙烯基硅橡胶25-30重量份、乙烯基三甲氧基硅烷15-25重量份、四甲氧基硅烷15-25重量份、烷氧基金属45-50重量份、酸触媒4-7重量份、去离子水15-25重量份、溶剂150-180重量份、月桂酸有机锡0.03-0.06重量份、含有硅氢结构的聚硅氧烷3-4重量份。
  6. 根据权利要求1所述的方法，其特征在于，所述的内衬材料包括以下重 量份的原料制备得到：甲基乙烯基硅橡胶28重量份、乙烯基三甲氧基硅烷20重量份、四甲氧基硅烷20重量份、烷氧基金属47重量份、酸触媒5重量份、去离子水20重量份、溶剂170重量份、月桂酸有机锡0.05重量份、含有硅氢结构的聚硅氧烷3重量份。
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