CN112876141A - High-temperature-resistant quartz sand composite material and preparation process thereof - Google Patents
High-temperature-resistant quartz sand composite material and preparation process thereof Download PDFInfo
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- CN112876141A CN112876141A CN202110139934.3A CN202110139934A CN112876141A CN 112876141 A CN112876141 A CN 112876141A CN 202110139934 A CN202110139934 A CN 202110139934A CN 112876141 A CN112876141 A CN 112876141A
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- quartz sand
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
- C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a high-temperature-resistant quartz sand composite material which comprises the following raw materials in parts by weight: 100 parts of quartz sand, 7-10 parts of resin, 1 part of curing agent, 1.5 parts of toughening agent and 0.25-0.3 part of coupling agent, wherein the curing agent is 4-methylimidazole, the toughening agent is polypropylene, and the coupling agent is KH550 silane coupling agent. The invention also discloses a preparation process of the high-temperature-resistant quartz sand composite material. The high-temperature-resistant quartz sand composite material provided by the invention is simple in preparation process, the coating effect of the resin on the surface of the quartz sand, the high-temperature resistance, the compression strength and the bending strength are improved by determining the components and the cost ratios of the quartz sand composite material, the finished product is packaged in a dry vacuum mode, the transportation is convenient, the resin is prevented from being worn and falling off in the transportation process, and the construction is convenient.
Description
Technical Field
The invention belongs to the field of quartz sand composite materials, and particularly relates to a high-temperature-resistant quartz sand composite material and a preparation process thereof.
Background
The surface of quartz sand is uniformly coated with resin by a physical method, a coupling agent is utilized to increase bonding force to prevent a composite material formed by falling off, the composite material is generally called coated sand and is widely applied to the field of casting, in the fields of fracturing modification of oil and gas fields, sand prevention of loose sandstone reservoirs and the like, the coated sand is mainly used as a rear-end sealing agent in the aspect of fracturing modification of the oil and gas fields, the aim is to prevent fracturing sand from returning and spitting to influence the fracturing effect after fracturing is completed, the coated sand is required to bear high temperature of about 80 ℃ in use and has stable permeability, the conventional resin coated sand is easy to fall off in packaging, storage, transportation and construction, the bonding performance of resin and quartz sand is poor, the permeability is unstable, the flow conductivity is caused to be unstable, the construction difficulty is increased, and the comprehensive development.
The invention aims to provide a high-temperature-resistant quartz sand composite material and a preparation process thereof, so as to solve the problems in the background technology.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide the high-temperature-resistant quartz sand composite material and the preparation process thereof, the material is easy to obtain, the raw material cost is low, the preparation process is simple, the coating effect of the resin on the surface of the quartz sand, the high temperature resistance, the compression strength and the bending strength are improved by determining the components and the cost proportion of the quartz sand composite material, the finished product is dry vacuum-packaged, the transportation is convenient, the resin is prevented from being abraded and falling off in the transportation process, and the construction is convenient.
In order to achieve the purpose, the invention provides a high-temperature-resistant quartz sand composite material which comprises the following raw materials in parts by weight: the coating comprises, by weight, 100 parts of quartz sand, 7-10 parts of resin, 1 part of curing agent, 1.5 parts of toughening agent and 0.25-0.3 part of coupling agent, wherein the resin is a mixture of bisphenol A epoxy resin and novolac epoxy resin, the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin is 4:1-3:1, the curing agent is 4-methylimidazole, the toughening agent is polypropylene, the coupling agent is KH550 silane coupling agent, the bisphenol A epoxy resin has high bonding strength, high corrosion resistance and electrical property, the novolac epoxy resin increases with the increase of epoxy groups, the crosslinking density is increased, the heat resistance is improved, and the bonding strength and the heat resistance of a resin coating can be improved by matching the epoxy groups and the epoxy groups.
Most preferably, the resin content of the high-temperature-resistant quartz sand composite material is 10 parts, and the distance between quartz sand grains is stable, so that the permeability is stable.
Most preferably, the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin in the high-temperature resistant quartz sand composite material is 5:2, and a large number of experiments prove that the compression strength and the breaking strength of the quartz sand composite material are the highest under the mixture ratio.
Optimally, the particle size of the quartz sand of the high-temperature resistant quartz sand composite material is 0.3-0.6mm, and the sand grains are small and uniform, so that the gap stability is facilitated.
Furthermore, the high-temperature resistant quartz sand composite material is a mixture of quartz sand with the grain size of 0.3-0.6mm and quartz sand with the grain size of 0.8-1.2mm, wherein the proportion of the quartz sand with the grain size of 0.3-0.6mm is more than 60%, and the manufacturing cost can be relatively saved on the premise of ensuring the permeability.
The preparation process of the flower-drum body made of the high-temperature-resistant quartz sand composite material is characterized by comprising the following steps of: the method comprises the following steps:
1) uniformly stirring the quartz sand subjected to surface treatment, the coupling agent and the toughening agent in a high-speed stirrer;
2) uniformly stirring the resin and the curing agent in a high-speed stirrer;
3) stirring the mixture obtained in the step 1 and the step 2 to ensure that the resin is uniformly coated on the surface of the quartz sand;
4) and (4) drying the mixture obtained in the step (3) into a solid state, and bagging and sealing the solid state after being dispersed by a pulverizer to form a product.
Further, in the preparation process of the high-temperature-resistant quartz sand composite material body, the surface treatment method of the quartz sand in the step 1 is to wash and dry the quartz sand, soak the quartz sand in ethanol for 4 hours, and then dry the quartz sand again, so that the surface activity is improved, and the combination with the coupling agent is facilitated.
Further, in the preparation process of the high-temperature-resistant quartz sand composite material body, in the step 2, the resin is heated to a molten state and dissolved in an acetone solvent, so that the fluidity of the resin is maintained, and a film is conveniently formed on the surface of the quartz sand.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the high-temperature-resistant quartz sand composite material, the coating effect, the high-temperature resistance, the compression strength and the bending strength of the resin on the surface of the quartz sand are improved by determining the components and the cost ratios of the quartz sand composite material, and the finished product is dry vacuum package, so that the high-temperature-resistant quartz sand composite material is convenient to transport, avoids resin abrasion and falling in the transportation process and is convenient to construct.
2. According to the preparation process of the high-temperature-resistant quartz sand composite material body, the resin proportion and the proportion of different components in the resin are optimized, so that gaps among particles are stable after the resin is coated by quartz sand, and the permeability of the coated sand is ensured.
Detailed Description
The invention is further illustrated by the following specific examples.
Example one
The high-temperature-resistant quartz sand composite material comprises the following raw materials in parts by weight: the quartz sand comprises, by weight, 100 parts of quartz sand, 7 parts of resin, 1 part of curing agent, 1.5 parts of toughening agent and 0.25 part of coupling agent, wherein the resin is a mixture of bisphenol A epoxy resin and novolac epoxy resin, the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin is 3:1, the curing agent is 4-methylimidazole, the toughening agent is polypropylene, the coupling agent is KH550 silane coupling agent, and the particle size of the quartz sand is 0.3-0.6 mm.
The preparation process comprises the following steps:
1) cleaning and drying the weighed quartz sand, soaking the quartz sand in ethanol for 4 hours, drying the quartz sand again, adding the weighed coupling agent and toughening agent into a high-speed stirrer, and uniformly stirring the mixture;
2) heating the weighed resin to a molten state, dissolving the resin in an acetone solvent, adding the weighed curing agent into a high-speed stirrer, and uniformly stirring;
3) stirring the mixture obtained in the step 1 and the step 2 to ensure that the resin is uniformly coated on the surface of the quartz sand;
4) and (4) drying the mixture obtained in the step (3) into a solid state, and bagging and sealing the solid state after being dispersed by a pulverizer to form a product.
A certain amount of the product is taken out to be prepared into a standard sample, and the compressive strength and the flexural strength of the standard sample are measured after the standard sample is solidified, and the results are 14.6MPa and 10.1 MPa respectively.
Example two
The high-temperature-resistant quartz sand composite material comprises the following raw materials in parts by weight: the coating comprises the following raw materials, by weight, 100 parts of quartz sand, 9 parts of resin, 1 part of curing agent, 1.5 parts of toughening agent and 0.25 part of coupling agent, wherein the resin is a mixture of bisphenol A epoxy resin and novolac epoxy resin, the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin is 3:1, the curing agent is 4-methylimidazole, the toughening agent is polypropylene, the coupling agent is KH550 silane coupling agent, the particle size of the quartz sand is a mixture of 0.3-0.6mm and 0.8-1.2mm, and the proportion of the particle size of 0.3-0.6mm is 65%.
The preparation process comprises the following steps:
1) cleaning and drying the weighed quartz sand, soaking the quartz sand in ethanol for 4 hours, drying the quartz sand again, adding the weighed coupling agent and toughening agent into a high-speed stirrer, and uniformly stirring the mixture;
2) heating the weighed resin to a molten state, dissolving the resin in an acetone solvent, adding the weighed curing agent into a high-speed stirrer, and uniformly stirring;
3) stirring the mixture obtained in the step 1 and the step 2 to ensure that the resin is uniformly coated on the surface of the quartz sand;
4) and (4) drying the mixture obtained in the step (3) into a solid state, and bagging and sealing the solid state after being dispersed by a pulverizer to form a product.
A certain amount of the product is taken out to be prepared into a standard sample, and the compressive strength and the flexural strength of the standard sample are measured after the standard sample is solidified, and the results are 14.2MPa and 9.9 MPa respectively.
EXAMPLE III
The high-temperature-resistant quartz sand composite material comprises the following raw materials in parts by weight: the coating comprises the following raw materials, by weight, 100 parts of quartz sand, 8 parts of resin, 1 part of curing agent, 1.5 parts of toughening agent and 0.3 part of coupling agent, wherein the resin is a mixture of bisphenol A epoxy resin and novolac epoxy resin, the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin is 5:2, the curing agent is 4-methylimidazole, the toughening agent is polypropylene, the coupling agent is KH550 silane coupling agent, the particle size of the quartz sand is a mixture of 0.3-0.6mm and 0.8-1.2mm, and the proportion of the particle size of 0.3-0.6mm is 80%.
The preparation process comprises the following steps:
1) cleaning and drying the weighed quartz sand, soaking the quartz sand in ethanol for 4 hours, drying the quartz sand again, adding the weighed coupling agent and toughening agent into a high-speed stirrer, and uniformly stirring the mixture;
2) heating the weighed resin to a molten state, dissolving the resin in an acetone solvent, adding the weighed curing agent into a high-speed stirrer, and uniformly stirring;
3) stirring the mixture obtained in the step 1 and the step 2 to ensure that the resin is uniformly coated on the surface of the quartz sand;
4) and (4) drying the mixture obtained in the step (3) into a solid state, and bagging and sealing the solid state after being dispersed by a pulverizer to form a product.
A certain amount of the product is taken out to be prepared into a standard sample, and the compressive strength and the flexural strength of the standard sample are measured after the standard sample is solidified, and the results are respectively 15.9MPa and 11.1 MPa.
Example four
The high-temperature-resistant quartz sand composite material comprises the following raw materials in parts by weight: the quartz sand comprises, by weight, 100 parts of quartz sand, 10 parts of resin, 1 part of curing agent, 1.5 parts of toughening agent and 0.3 part of coupling agent, wherein the resin is a mixture of bisphenol A epoxy resin and novolac epoxy resin, the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin is 4:1, the curing agent is 4-methylimidazole, the toughening agent is polypropylene, the coupling agent is KH550 silane coupling agent, and the particle size of the quartz sand is 0.3-0.6 mm.
The preparation process comprises the following steps:
1) cleaning and drying the weighed quartz sand, soaking the quartz sand in ethanol for 4 hours, drying the quartz sand again, adding the weighed coupling agent and toughening agent into a high-speed stirrer, and uniformly stirring the mixture;
2) heating the weighed resin to a molten state, dissolving the resin in an acetone solvent, adding the weighed curing agent into a high-speed stirrer, and uniformly stirring;
3) stirring the mixture obtained in the step 1 and the step 2 to ensure that the resin is uniformly coated on the surface of the quartz sand;
4) and (4) drying the mixture obtained in the step (3) into a solid state, and bagging and sealing the solid state after being dispersed by a pulverizer to form a product.
A certain amount of the product is taken out to be prepared into a standard sample, and the compressive strength and the flexural strength of the standard sample are measured after the standard sample is solidified, and the results are respectively 15.8MPa and 11.2 MPa.
EXAMPLE five
The high-temperature-resistant quartz sand composite material comprises the following raw materials in parts by weight: the quartz sand comprises, by weight, 100 parts of quartz sand, 10 parts of resin, 1 part of curing agent, 1.5 parts of toughening agent and 0.3 part of coupling agent, wherein the resin is a mixture of bisphenol A epoxy resin and novolac epoxy resin, the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin is 5:2, the curing agent is 4-methylimidazole, the toughening agent is polypropylene, the coupling agent is KH550 silane coupling agent, and the particle size of the quartz sand is 0.3-0.6 mm.
The preparation process comprises the following steps:
1) cleaning and drying the weighed quartz sand, soaking the quartz sand in ethanol for 4 hours, drying the quartz sand again, adding the weighed coupling agent and toughening agent into a high-speed stirrer, and uniformly stirring the mixture;
2) heating the weighed resin to a molten state, dissolving the resin in an acetone solvent, adding the weighed curing agent into a high-speed stirrer, and uniformly stirring;
3) stirring the mixture obtained in the step 1 and the step 2 to ensure that the resin is uniformly coated on the surface of the quartz sand;
4) and (4) drying the mixture obtained in the step (3) into a solid state, and bagging and sealing the solid state after being dispersed by a pulverizer to form a product.
A certain amount of the product is taken out to be made into a standard sample, and the compressive strength and the flexural strength of the standard sample are measured after the standard sample is solidified, and the results are respectively 16.4MPa and 11.5 MPa.
The above-described embodiments should not be construed as limiting the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc., which are within the spirit and principle of the present invention, should be included in the scope of the present invention by those skilled in the art, and those not described in detail in the present specification are known in the art.
Claims (8)
1. The high-temperature-resistant quartz sand composite material is characterized in that: the feed comprises the following raw materials in parts by weight: the coating comprises the following components, by mass, 100 parts of quartz sand, 7-10 parts of resin, 1 part of curing agent, 1.5 parts of toughening agent and 0.25-0.3 part of coupling agent, wherein the resin is a mixture of bisphenol A epoxy resin and novolac epoxy resin, the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin is 4:1-3:1, the curing agent is 4-methylimidazole, the toughening agent is polypropylene, and the coupling agent is KH550 silane coupling agent.
2. The high temperature resistant quartz sand composite material of claim 1, wherein: the resin content is 10 parts.
3. The high temperature resistant quartz sand composite material of claim 1, wherein: the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin is 5: 2.
4. The high temperature resistant quartz sand composite material of claim 1, wherein: the grain size of the quartz sand is 0.3-0.6 mm.
5. The high temperature resistant quartz sand composite material of claim 1, wherein: the quartz sand is a mixture of 0.3-0.6mm and 0.8-1.2mm in particle size, wherein the proportion of the 0.3-0.6mm in particle size is more than 60%.
6. The process for preparing the high-temperature-resistant quartz sand composite material according to any one of claims 1 to 5, wherein: the method comprises the following steps:
uniformly stirring the quartz sand subjected to surface treatment, the coupling agent and the toughening agent in a high-speed stirrer;
uniformly stirring the resin and the curing agent in a high-speed stirrer;
stirring the mixture obtained in the step 1 and the step 2 to ensure that the resin is uniformly coated on the surface of the quartz sand;
and (4) drying the mixture obtained in the step (3) into a solid state, and bagging and sealing the solid state after being dispersed by a pulverizer to form a product.
7. The preparation process of the high-temperature-resistant quartz sand composite material according to claim 6, characterized by comprising the following steps of: the surface treatment method of the quartz sand in the step 1 is to wash and dry the quartz sand, soak the quartz sand in ethanol for 4 hours, and then dry the quartz sand again.
8. The preparation process of the high-temperature-resistant quartz sand composite material according to claim 6, characterized by comprising the following steps of: the resin in step 2 is heated to a molten state and dissolved in an acetone solvent.
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| CN202110139934.3A CN112876141A (en) | 2021-02-02 | 2021-02-02 | High-temperature-resistant quartz sand composite material and preparation process thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104830306A (en) * | 2015-04-20 | 2015-08-12 | 武汉工程大学 | Sand control agent used for steam huff-puff oil well at high temperature |
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- 2021-02-02 CN CN202110139934.3A patent/CN112876141A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104830306A (en) * | 2015-04-20 | 2015-08-12 | 武汉工程大学 | Sand control agent used for steam huff-puff oil well at high temperature |
Non-Patent Citations (1)
| Title |
|---|
| 朱杰等: "高温蒸汽吞吐油井用复合树脂防砂剂的制备及性能研究", 《油田化学》 * |
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Application publication date: 20210601 |