CN109321230A - A kind of low-density covering material - Google Patents
A kind of low-density covering material Download PDFInfo
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- CN109321230A CN109321230A CN201811159623.8A CN201811159623A CN109321230A CN 109321230 A CN109321230 A CN 109321230A CN 201811159623 A CN201811159623 A CN 201811159623A CN 109321230 A CN109321230 A CN 109321230A
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- resin film
- covering material
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- aggregate
- drag
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
- C09K8/805—Coated proppants
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/54—Polycondensates of aldehydes
- C08G18/542—Polycondensates of aldehydes with phenols
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/58—Epoxy resins
Abstract
The present patent application belongs to the fluid minerals production technique such as petroleum, natural gas and shale gas field, specifically disclose a kind of low-density covering material, including aggregate and the coat being coated on aggregate, the coat includes resin, catalyst, curing agent, it also include drag reducer and amines additives in the coat, when sand water quality ratio is 5%, drag reducing efficiency 20-40%；When sand water quality ratio is 15%, drag reducing efficiency 30-45%；When sand water quality ratio is 25%, drag reducing efficiency 35-50%；When sand water quality ratio is 45%, drag reducing efficiency 45-60%；When sand water quality ratio is 55%, drag reducing efficiency 50-60%.Present invention is mainly used for exploitation petroleum, natural gas, solve the problems, such as proppant using when need add carry liquid cause use cost to increase and cause environmental pollution.
Description
Technical field
The invention belongs to the fluid minerals production technique such as petroleum, natural gas and shale gas fields, specifically disclose a kind of low
Density covering material.
Background technique
Proppant is made and coating membrane material in aggregate surface, and proppant is widely used in hydraulic fracturing technology
In.
Hydraulic fracturing technology at home and abroad comparative maturity, petroleum fracturing propping agent is as essential in fracturing process
One of article, performance superiority and inferiority will directly influence fracturing effect, and apparent density is to evaluate the important finger of proppant performance
One of mark, apparent density is lower, and it is lower relative to the relative density of fracturing fluid, after proppant is mixed with pressure break carrying liquid, depending on
The lower density the easier to suspend in fracturing fluid, to greatly reduce the rate of settling.It will pump farther in pumping procedure.
High pumping pressure pumps fluid into well, while rock stratum of splitting is to allow hydrocarbons preferably to pass through.However, removing non-pressure
It keeps, the aperture otherwise newly formed is closed.In order to open and keep path, support is injected simultaneously during pumping fluid
Agent, support needed for keeping aperture with generation.When forming crack, biography when proppant passes through release hydraulic pressure in the slurry
It passs, proppant forms the filling or support for staying open crack herein.
In order to make proppant enter rock stratum with fluid, general method is that these particles suspend in a fluid, and traditional
Fracturing propping agents density it is all bigger than the density of water, and water frictional resistance itself is larger, practical if not adding the material of drag reduction
Pumping pressure of constructing is excessively high, can not normal construction.Conventional proppants are to reach construction requirement and taking for drag reduction of special configuration
Band liquid, allows for proppant use cost in this way and increases, and carries in liquid and contains chemical compositions, while can cause dirt to environment
Dye.
Summary of the invention
The purpose of the present invention is to provide a kind of low-density covering materials, to solve to need to add when proppant uses to carry
The problem of liquid causes use cost to increase and causes environmental pollution.
In order to achieve the above object, base case of the invention are as follows: a kind of low-density covering material, including aggregate and cladding
Coat on aggregate, the coat include resin, catalyst, curing agent, which is characterized in that are also wrapped in the coat
Containing drag reducer and amines additives, the drag reducer accounts for the 0.8-2% of aggregate quality, and when sand water quality ratio is 5%, drag reducing efficiency is
20-40%；When sand water quality ratio is 15%, drag reducing efficiency 30-45%；When sand water quality ratio is 25%, drag reducing efficiency 35-
50%；When sand water quality ratio is 45%, drag reducing efficiency 45-60%；When sand water quality ratio is 55%, drag reducing efficiency 50-60%.
The working principle and beneficial effect of this base case is:
(1) it is studied for a long period of time middle discovery by applicant, after drag reducer is added in covering material, when meeting the following conditions:
When sand water quality ratio is 5%, drag reducing efficiency 20-40%；When sand water quality ratio is 15%, drag reducing efficiency 30-45%；Sand water quality
When than being 25%, drag reducing efficiency 35-50%；When sand water quality ratio is 45%, drag reducing efficiency 45-60%；Sand water quality ratio is
When 55%, drag reducing efficiency 50-60%.When controlling within the above range sand water quality than corresponding drag reducing efficiency, what is obtained covers
The resistance reducing performance of membrane material is able to satisfy the requirement in oil fracturing construction；
(2) drag reducer is added in coat, the frictional resistance of overlay film backing material greatly reduces, and makes overlay film backing material
In clear water also have good guide performance, reach corresponding technical requirements, compared with the existing technology for this programme save
The auxiliary additives such as slippery water, reduce construction cost, simplify construction technology, reduce equipment requirement.In this programme
The rate of dissolution of overlay film backing material is fast, can be suspended in clear water in 3-15s, and in construction, overlay film backing material is instant fastly
Solution may be implemented huge discharge operation, greatly improve working efficiency in clear water.
(3) overlay film material of the invention contains nanoscale protrusion in coating layer surface, these protrusions extend in proppant particles
Surface, protrusion will increase the buoyancy of proppant, while when proppant and water contact, the one kind reserved in surface coating resin
Group can react rapidly with water releases bulk gas small molecule, these gas molecules or be enclosed in resin film expand against
Resin membrane body stage, which thickens, increases the equivalent diameter of proppant particles body, or be attached to proppant surface stage extension or
It is gathered in the gas blanket that one layer of package proppant particles body is formed on the interface that proppant resin film is contacted with water body, this gas
Layer formation stages between proppant particles body are connected to and the result closed causes simple grain proppant to be formed in water body more loosely
Cotton wadding gather shape, be greatly lowered the relative density of proppant in water, in this way so as to hang proppant in water
It floats.When proppant moves in water, the protrusion of the curved surface on proppant resin film can reduce proppant and settle speed in water
Rate；Part is settled down to the proppant of water bottom accumulation because the more protrusion of its surface resin film is attached to proppant surface, drops
The low degree of packing of proppant particles stack layers, intergranular water body amount is more compared with conventional particle stack, and then when water body is
The separation of its congeries and movement can more easily be pushed by making the fluidity with very little also, realize that proppant is preferably suspended in
In water；
(4) covering material is mixed into water, covering material can be made to suspend or partly suspend in water, covering material enters
Covering material can be made, to disperse, to ensure that covering material has preferable support effect with water flowing behind gap in rock；
(5) after covering material is mixed with water, other thickening substances are not added, protective effect is played to environment；With
For water as suspending agent, use cost is low；
(6) after covering material is mixed with water, covering material can be more evenly distributed in clear water, in clear water more
It is evenly distributed, can make the overlay film backing material in mixed liquor to carry out from suspended state when mixed liquor reaches certain flow rate
In reservoir fracture under long distance delivery to recovery well, and slot height point of totally cleaving can be reached compared to traditional overlay film backing material
Cloth support, improves the rate of growth of petroleum etc..
Further, the coat includes inner layer resin film and outermost resin film, and the coat includes inner layer resin film
With outermost resin film, the inner layer resin film is the one or more of urethane resin film, epoxy resin film and phenolic resin film,
The outermost resin film is urethane resin film.
Further, polyol resin, catalyst and isocyanates are contained in the outermost resin film；The amines additives
In outermost resin film, isocyanates is the 45-75% of polyalcohols resin, and the hydroxyl equivalent of polyalcohols resin is 60-
300.Applicant has found in long-term practice, polyalcohols resin, isocyanates control in above range, produce with it is existing
The entirely different performance of material property, firstly, polyalcohols resin reacts the poly- ammonia for generating and having micro protrusion with isocyanates
Ester resin film, due to further including amines additives, polyalcohols resin can be right with amines additives in isocyanates reaction process
Isocyanates plays catalytic action, and isocyanates is made to generate a large amount of mutually isolated bubbles, bubble inside urethane resin film
It is closed in inside urethane resin film, so that bubble forms a large amount of protrusion in polyurethane resin film surface, reduces from suspension
The apparent density and volume density of overlay film backing material, improve it from suspendability.Simultaneously because the equivalent of polyalcohols resin hydroxyl
For 60-300, isocyanate is at least the 45% of polyalcohols resin, when isocyanates and whole polyalcohols resins are anti-
After urethane resin film should being generated, also remains part isocyanates and do not reacted, after remaining isocyanate groups meet water,
Gas is reacted and can generated in the microcosmic small space body that the chain element of resin film surrounds with water, and this small quantity gas is anti-
Should be able to promotion under gradually overall volume formed bubble, and push resin film covering material particle radial dimension increase bubble
Make polyurethane resin film surface that there are more protrusions, reaches the dilation for coating layer surface most preferably, to further decrease
From the volume density of suspension overlay film backing material, while when isocyanate is between the 45-75% of polyalcohols resins, make
The volume of the bubble of generation is unlikely to that bubble is caused very much to be easy breakage etc. greatly, and makes the quantity of the bubble generated will not be excessive,
It being all mutually isolated between amount bubble, causing air bubble intensity to reduce without there are problems that bubble contacts with each other.
Further, in internal layer resin film, drag reducer accounts for the 0.8-1.6% of aggregate for the drag reducer addition；Work as drag reducer
When adding outermost resin film, drag reducer accounts for the 1-2% of aggregate, when drag reducer adds on internal layer resin film and outermost resin film all
When added with drag reducer, drag reducer accounts for the 0.8-1.5% of aggregate, and the drag reducer added in outermost resin film is drag reducer total amount
40-60%.When drag reducer is located at the different location of covering material, can be played using the drag reducer in above range preferable
Drag-reduction effect.
Further, the drag reducer is one of N- trimethyl silane, oxidized paraffin wax soap, JG-1, Z02.
Further, the aggregate is the mixture of one or both of haydite, quartz sand.It is covered using prepared by upper aggregate
Membrane material can reach construction requirement.
Further, the aggregate is the mixture of one or both of haydite, quartz sand.
Further, the additive be aminated compounds, the aminated compounds be diethylenetriamine, triethylamine, ethamine,
The composition of one or more of triethylene tetramine, ethylenediamine.The molecule of above-mentioned amine is small, and reactivity is big.
Further, the aggregate is 100 parts, and the resin total amount in inner layer resin film and outermost resin film is 2-10 parts, interior
The curing agent that layer resin film uses is the 10-50% of resin in inner layer resin film, and the quality of the catalyst is polyalcohols tree
The 1/1000-1/100 of rouge, the quality of the aminated compounds are the 1-20% of polyalcohols resin quality；When inner layer resin film
It is interior containing polyalcohols resin and when other resins, the mass ratio of polyalcohols resin and other resins is 1:1-5.When overlay film material
When haydite, resin, curing agent, catalyst and aminated compounds in material containing aforementioned proportion, the surface of covering material be will form
More protrusion, bump sizes are observed under scanning electron microscope between 100~500nm, protrusion in coating layer surface random distribution, protrusion
It is light highlighted or white curved body on the resin membrane body of Shi Faxian deep dark, has in the surface resin film of single particle body non-
The random distribution of homogeneity, then calculate be every 100 square micron under homogeneous distribution state surface it is convex with 1~40 or so
It rises, increases the suspendability of covering material in this way；
Further, sphericity >=0.7 of the aggregate, circularity >=0.7, percentage of damage≤8%, acid solubility≤5%.It is advised on book
The good guide performance of covering material made from the aggregate of lattice, crush resistance can be strong.
Further, the curing agent includes organic amine, organic acid anhydride, stearic acid, dihydroxy stearic acid, oleic acid, sub- oil
The mixture of one of acid, ricinoleic acid or any component, the degree of functionality of the curing agent are 2-5.When between degree of functionality 2-5,
Curing agent reactivity is good, and comprehensive performance performance and the chemical synthesis that can accelerate the resin membrane body of covering material face coat are lazy
Property.
Further, the catalyst is one or more of alkyls tin compound and/or alkyls lead compound
Mixture.The suspending efficiency of covering material in water can be improved using the catalyst of alkyls tin and/or alkyl ekalead.
Further, alkyls tin compound includes dibutyl tin dilaurate, tributyl tin, and alkyls lead compound includes
Lead tetraethide, isooctyl acid lead.It can accelerate the solidification rate of coat using above-mentioned catalyst and intensity shows.
Detailed description of the invention
Fig. 1 is a kind of electron-microscope scanning figure of low-density covering material embodiment 1 of the present invention.
Specific embodiment
It is further described below by specific embodiment:
Aggregate is haydite and/or quartz sand.The apparent density of haydite and/or quartz sand is 1.05~2.65g/cm3, granularity
For 20~140 mesh, sphericity >=0.7, circularity >=0.7, percentage of damage≤8%, acid solubility≤5%.
Resin is organic thermoplastic polymer resin, and resin viscosity range is 30~60cp (20 DEG C), resinous molecular structure
In organic big point at least containing the two or more groups in epoxy group, phenolic hydroxyl group, carbonyl, amide groups, amino, isocyanate group
The average molecular weight of sub- substance, resin is greater than 100, such as toluene di-isocyanate(TDI), methylenediphenyl diisocyanates, different Fo Er
One of ketone diisocyanate, methyl diphenylene diisocyanate are several.
Curing agent includes organic amine, organic acid anhydride, isocyanates, stearic acid, dihydroxy stearic acid, oleic acid, sub- oil
The mixture of one of acid, ricinoleic acid or any component, the degree of functionality of curing agent is between 2-5.
Additive is aminated compounds, and aminated compounds is diethylenetriamine, triethylamine, ethamine, triethylene tetramine, second two
The composition of one or more of amine.
Catalyst be alkyls tin compound and alkyls lead compound, including dibutyl tin dilaurate, tributyl tin,
One of lead tetraethide, isooctyl acid lead or several mixtures.
Drag reducer is one of N- trimethyl silane, oxidized paraffin wax soap, JG-1, Z02.
Covering material of the invention has coat, and coat includes inner layer resin film and outermost resin film, such as Fig. 1 institute
Show, the covering material in embodiment 1 is found through electron-microscope scanning, and bump sizes are between 100~500nm, and protrusion is in coating layer surface
White curved body is presented in random distribution, protrusion, and the surface of every 100 square micron has 40 or so protrusions.
Particular technique or condition person are not specified in various embodiments of the present invention, it is described conventional according to the literature in the art
Technology or conditions carry out.Reagents or instruments used without specified manufacturer is that can buy the routine obtained by market
Reagent manufacture.
In the present invention from suspension covering material, haydite is 100 parts, in the resin and outermost resin film of inner layer resin film
Resin is 2-10 parts, and when inner layer resin film curing agent is epoxy resin, the curing agent of inner layer resin film is the 10- of epoxy resin
50%, when inner layer resin film curing agent is phenolic resin, the curing agent of inner layer resin film is the 10- of phenolic resin quality
30%；When the resin in inner layer resin film or outermost resin film is polyalcohols resin, isocyanates is polyalcohols resin
The 45-75% of quality, the quality of catalyst are the 1/1000-1/100 of polyalcohols resin, and the quality of aminated compounds is polynary
The 1-20% of alcohols resin quality；When containing polyalcohols resin and other resins in inner layer resin film, polyalcohols resin
Mass ratio with other resins is 1:1-5.
In the present invention, sand water quality is than referring to that covering material accounts for the specific gravity of water quality.
Embodiment 1
Taking apparent density is 1.05g/cm3, granularity be 100 parts of haydite of 20/40, pour into bowl after haydite is heated to 190 DEG C
It is stirred in type mulling pot, reaches 2 parts of epoxy resin of addition between 180-190 DEG C to temperature, reach between 160-180 DEG C to temperature
0.2 part of curing agent T31 stirring is added, the N- trimethyl silicon for reaching 0.8 part of addition between 150-160 DEG C to temperature stirs
It mixes, reaches to temperature and 2 parts of glycol polymers and the stirring of 0.02 part of dibutyl tin dilaurate are added between 80-130 DEG C, to
Temperature reaches the isocyanates stirring of 0.9 part of addition between 60-110 DEG C, reaches to temperature and takes the dish out of the pot between 40-70 DEG C.
Embodiment 2
Taking apparent density is 1.05g/cm3, granularity be 100 parts of haydite of 20/40, pour into bowl after haydite is heated to 190 DEG C
It is stirred in type mulling pot, reaches 2 parts of epoxy resin of addition between 180-190 DEG C to temperature, reach between 160-180 DEG C to temperature
0.2 part of curing agent T31 stirring is added, the N- trimethyl silicon for reaching 1.6 parts of addition between 150-160 DEG C to temperature stirs
It mixes, reaches to temperature and 2 parts of glycol polymers and the stirring of 0.02 part of dibutyl tin dilaurate are added between 80-130 DEG C, to
Temperature reaches the isocyanates stirring of 1.5 parts of addition between 60-110 DEG C, reaches to temperature and takes the dish out of the pot between 40-70 DEG C.
Embodiment 3
Taking apparent density is 1.5g/cm3, granularity be 100 parts of haydite of 30/50, pour into bowl-type after haydite is heated to 200 DEG C
Stirred in mulling pot, reach to temperature and the stirring of 5 parts of phenolic resin is added between 190-200 DEG C, to temperature reach 170-180 DEG C it
Between the stirring of 1.5 parts of hexamethylenetetramines is added, reach to temperature and 0.6 part of JG-1 stirring be added between 150-180 DEG C, to temperature
Reach the ethylene glycol polymer that 5 parts are added between 80-130 DEG C and 0.005 part of dibutyl tin dilaurate stirs, reaches to temperature
The mixture stirring of 0.75 part of triethylamine and triethylene tetramine is added between 180-190 DEG C, reaches between 60-110 DEG C to temperature
The isocyanates and 0.4 part of JG-1 for being added 3.5 parts stir, and reach to temperature and take the dish out of the pot between 40-70 DEG C.
Embodiment 4
Taking apparent density is 1.5g/cm3, granularity be 100 parts of haydite of 30/50, pour into bowl-type after haydite is heated to 200 DEG C
Stirred in mulling pot, reach to temperature and the stirring of 5 parts of phenolic resin is added between 190-200 DEG C, to temperature reach 170-180 DEG C it
Between the stirring of 1.5 parts of hexamethylenetetramines is added, reach to temperature and 0.8 part of JG-1 stirring be added between 150-180 DEG C, to temperature
Reach the ethylene glycol polymer that 5 parts are added between 80-130 DEG C and 0.005 part of dibutyl tin dilaurate stirs, reaches to temperature
The mixture stirring of 0.75 part of triethylamine and triethylene tetramine is added between 180-190 DEG C, reaches between 60-110 DEG C to temperature
The isocyanates and 0.8 part of JG-1 for being added 3.5 parts stir, and reach to temperature and take the dish out of the pot between 40-70 DEG C.
Embodiment 5
Taking apparent density is 2.1g/cm3, haydite that granularity is 40/70 and totally 100 parts of quartz sand, by haydite and quartz sand
Mixture is poured into bowl-type mulling pot after being heated to 210 DEG C and is stirred, and reaches 5 parts of epoxy-esters of addition between 190-210 DEG C to temperature
Resin and 1.5 parts of curing agent T31 stirring reach to temperature and the different of 5 parts of ethylene glycol polymers and 3.5 parts are added between 80-130 DEG C
Cyanate and the stirring of 0.05 part of dibutyl tin dilaurate reach to temperature and 1 part of ethamine and 0.8 part are added between 70-100 DEG C
Oxidized paraffin wax soap stirring, reaches to temperature and takes the dish out of the pot between 40-70 DEG C.
Embodiment 6
Taking apparent density is 2.1g/cm3, granularity be totally 100 parts of haydite of 40/70, pour into bowl after haydite is heated to 210 DEG C
It is stirred in type mulling pot, reaches to temperature and 5 parts of epoxy ester resins and 1.5 parts of curing agent T31 stirrings are added between 190-210 DEG C,
Reach to temperature and 5 parts of ethylene glycol polymers, 3.5 parts of isocyanates and 0.05 part of two fourth of tin dilaurate are added between 80-130 DEG C
Ji Xi stirring reaches to temperature and 1 part of ethamine and the stirring of 0.8 part of oxidized paraffin wax soap is added between 70-100 DEG C, reaches to temperature
It takes the dish out of the pot between 40-70 DEG C.
Embodiment 7
Taking apparent density is 2.65g/cm3, granularity be 100 parts of haydite of 70/140, pour into bowl after haydite is heated to 230 DEG C
It is stirred in type mulling pot, the mixture of 6 parts of ethylene glycol polymers and epoxy resin is added after temperature reaches 180-230 DEG C,
In, epoxy resin is 3 parts, and 1.2 parts of curing agent T31 stirring is added after temperature reaches 150-200 DEG C, reaches 140- to temperature
The mixture stirring of both 0.03 part dibutyl tin dilaurate, lead tetraethides is added between 150 DEG C, reaches 130- to temperature
3 parts of methylenediphenyl diisocyanates and 3 parts of curing agent T31 stirring are added between 140 DEG C；Reach 80-130 DEG C to temperature
Between 4 parts of ethylene glycol polymers, 2.8 parts of isocyanates and 0.04 part of dibutyl tin dilaurate, lead tetraethide two are added
The mixing of person reaches the ZO2 stirring of 0.8 part of addition between 60-100 DEG C to temperature, reaches to go out between 40-70 DEG C to temperature
Pot.
Embodiment 8
Taking apparent density is 2.65g/cm3, granularity be 100 parts of haydite of 70/140, pour into bowl after haydite is heated to 230 DEG C
It is stirred in type mulling pot, the mixture of 6 parts of ethylene glycol polymers and epoxy resin is added after temperature reaches 180-230 DEG C,
In, epoxy resin is 3 parts, and 1.2 parts of curing agent T31 stirring is added after temperature reaches 150-200 DEG C, reaches 140- to temperature
The mixture stirring of both 0.03 part dibutyl tin dilaurate, lead tetraethides is added between 150 DEG C, reaches 130- to temperature
3 parts of methylenediphenyl diisocyanates and 3 parts of curing agent T31 stirring are added between 140 DEG C；Reach 80-130 DEG C to temperature
Between 4 parts of ethylene glycol polymers, 2.8 parts of isocyanates and 0.04 part of dibutyl tin dilaurate, lead tetraethide two are added
The mixing of person reaches the ZO2 stirring of 1.6 parts of addition between 60-100 DEG C to temperature, reaches to go out between 40-70 DEG C to temperature
Pot.
It is as shown in table 1 to embodiment 1-8 covering material test data.
Table 1
" certainly outstanding composite index " is the overall target for evaluating covering material suspendability in clear water in upper table, by mattress height
Degree and the ratio that suspends codetermine, and engineering significance is practical bulk density of the covering material in clear water, and value is smaller to be equivalent to
Relative density in water is with regard to smaller, then the suspension of covering material is better, suspension time is longer.
(b is suspension ratio, h is mattress height)
It is obtained by the analysis of table 1: when haydite in covering material or quartz sand apparent density are in 1.05~2.65g/cm3Between
When, covering material has preferable suspension effect in water.
Comparative example 1 and comparative example 2, the experimental procedure and embodiment 1 of comparative example 1 and comparative example 2 are set by taking embodiment 1 as an example
Identical, the amount of the drag reducer in comparative example 1 is 0.75%, and the amount of the drag reducer in comparative example 2 is 2.5%, measures different sand water
Quality than when drag reducing efficiency it is as shown in table 2.
Drag reducing efficiency test method is as follows:
200g sample is measured in the beaker of 500mL, 300mL distilled water is added, is stirred on electromagnetic mixer, stirring 5
After minute, with the sand core funnel filtering of 20-30 μm of aperture, filtrate is spare；
The sample solution of preparation measures its coefficient of friction with lubricity tester.Blank test is done with distilled water simultaneously.
Drag reducing efficiency, which is calculated as follows, sees formula:
Drag reducing efficiency %=(K1-K2)/K1* 100%
In formula: K1Distilled water coefficient of friction
K2Sample coefficient of friction
Table 2
It finds to obtain the data in table 2 by applicant's long-term experiment, by the data in table 2 it is found that choosing specific ratio
After the sand water ratio of example, covering material has preferable drag-reduction effect.
It is compared with comparative example 1 it is found that being less than using covering material drag reducing efficiency obtained in comparative example 1 is aobvious by embodiment 1
The drag reducing efficiency of covering material obtained in embodiment 1, and embodiment l and the difference of comparative example 1 are: drag reducer in comparative example 1
Content less than 0.8%, when the drag reduction agent content in covering material is greater than 0.8% the drag reducing efficiency of covering material obtained compared with
It is small.
It is compared by embodiment 1 and comparative example 2 it is found that cannot be apparently higher than using covering material obtained in comparative example 2
The drag reducing efficiency of covering material obtained in embodiment 1, and embodiment l and the difference of comparative example 2 are: drag reducer in comparative example 2
Content be greater than 2%, when the drag reduction agent content in covering material is greater than 2%, the drag reducing efficiency of covering material obtained will not be obtained
It is obviously improved, when using covering material, drag reducer will see in a large amount of water, if drag reducer additional amount is excessive, into anti-
Answering the water of system can increase, and in the process, isocyanates can react with water, if drag reducer is too many, in coating process
Water evaporating completely cannot there can be larger impact to the reaction of resin and curing agent in this way, so that the percentage of damage of product increases, hanged
Buoyancy can be deteriorated, and acid solubility also will increase, and then influence other basic performances of covering material.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.
Claims (12)
1. a kind of low-density covering material, including aggregate and the coat being coated on aggregate, the coat includes resin, urges
Agent, curing agent, which is characterized in that also include drag reducer and amines additives in the coat, the drag reducer accounts for aggregate
The 0.8-2% of quality, when sand water quality ratio is 5%, drag reducing efficiency 20-40%；When sand water quality ratio is 15%, drag reducing efficiency is
30-45%；When sand water quality ratio is 25%, drag reducing efficiency 35-50%；When sand water quality ratio is 45%, drag reducing efficiency 45-
60%；When sand water quality ratio is 55%, drag reducing efficiency 50-60%.
2. a kind of low-density covering material according to claim 1, which is characterized in that the coat includes inner layer resin
Film and outermost resin film, the inner layer resin film are one kind or more of urethane resin film, epoxy resin film and phenolic resin film
Kind, the outermost resin film is urethane resin film.
3. a kind of low-density covering material according to claim 1, which is characterized in that containing more in the outermost resin film
First alcohol resin, catalyst and isocyanates；The amines additives are located in outermost resin film, and isocyanates is polyalcohols tree
The 45-75% of rouge, the hydroxyl equivalent of polyalcohols resin are 60-300.
4. a kind of low-density covering material according to claim 3, which is characterized in that the drag reducer addition is in internal layer tree
When adipose membrane, drag reducer accounts for the 0.8-1.6% of aggregate；When drag reducer adds outermost resin film, drag reducer accounts for the 1-2% of aggregate；
When drag reducer addition is all added with drag reducer on internal layer resin film and outermost resin film, drag reducer accounts for the 0.8- of aggregate
1.5%, the drag reducer added in outermost resin film is the 40-60% of drag reducer total amount.
5. a kind of low-density covering material according to claim 1, which is characterized in that the drag reducer is N- dodecyl
One of trimethyl silane, oxidized paraffin wax soap, JG-1, Z02.
6. a kind of low-density covering material according to claim 1, which is characterized in that the aggregate is haydite, quartz sand
One or both of mixture.
7. a kind of low-density covering material according to claim 5, which is characterized in that the amines additives are amine
Close object, the aminated compounds be one or both of diethylenetriamine, triethylamine, ethamine, triethylene tetramine, ethylenediamine with
On composition.
8. a kind of low-density covering material according to claim 6, which is characterized in that the aggregate is 100 parts, internal layer tree
Resin total amount in adipose membrane and outermost resin film is 2-10 parts, and the curing agent that inner layer resin film uses is resin in inner layer resin film
10-50%, the quality of the catalyst is the 1/1000-1/100 of polyalcohols resin, and the quality of the aminated compounds is
The 1-20% of polyalcohols resin quality；When containing polyalcohols resin and other resins in inner layer resin film, polyalcohols
The mass ratio of resin and other resins is 1:1-5.
9. a kind of low-density covering material according to claim 1, which is characterized in that sphericity >=0.7 of the aggregate, circle
Degree >=0.7, percentage of damage≤8%, acid solubility≤5%.
10. a kind of low-density covering material according to claim 1, which is characterized in that the curing agent includes organic amine
The mixture of one of class, organic acid anhydride, stearic acid, dihydroxy stearic acid, oleic acid, linoleic acid, ricinoleic acid or any component,
The degree of functionality of the curing agent is 2-5.
11. a kind of low-density covering material according to claim 1, which is characterized in that the catalyst is alkyls tin
The mixture of one or more of compound and/or alkyls lead compound.
12. a kind of low-density covering material according to claim 11, which is characterized in that alkyls tin compound includes two
Dibutyl tin laurate, tributyl tin, the alkyls lead compound include lead tetraethide, isooctyl acid lead.
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| CN201811159623.8A CN109321230A (en) | 2018-09-30 | 2018-09-30 | A kind of low-density covering material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811159623.8A CN109321230A (en) | 2018-09-30 | 2018-09-30 | A kind of low-density covering material |
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Application publication date: 20190212 |