CN107034002A

CN107034002A - Environment-friendly type aqueous demoulding parting composition

Info

Publication number: CN107034002A
Application number: CN201710364131.1A
Authority: CN
Inventors: 黄钦曜
Original assignee: Zhongshan Rt Textile Materials Co Ltd
Current assignee: Zhongshan Rt Textile Materials Co Ltd
Priority date: 2017-05-22
Filing date: 2017-05-22
Publication date: 2017-08-11
Anticipated expiration: 2037-05-22
Also published as: CN107034002B

Abstract

Environment-friendly type aqueous demoulding parting composition, in parts by weight, its raw material includes：46 parts of alkyl-silicone oil, 8 12 parts of polyvinyl alcohol, 35 parts of sulfonated methyl cellulose, 35 parts of OPE, 13 parts of cyclodextrin, 13 parts of solvent naphtha, 24 parts of isopropanol, 24 parts of diisooctyl succinate sodium sulfonate, 8 12 parts of polyacrylamide, 0.1 1 parts of isopropanolamine, 6 10 parts of AEO, 0.5 1 parts of imidazolines, 12 parts of isothiazolinone compound, 55 60 parts of deionized water；The degree of polymerization of the polyvinyl alcohol is 2,300 2500, and alcoholysis degree is 87 100%；The alkyl-silicone oil is 3 hexyl heptamethyltrisiloxanes.

Description

Environment-friendly type aqueous demoulding parting composition

Technical field

The invention belongs to aluminium and aluminium alloy work piece field, especially a kind of very environmentally friendly release combination of the aqueous demoulding Thing.

Background technology

Compression casting (abbreviation die casting) is a kind of metal casting technique, the demoulding parting composition be by aluminium alloy, magnesium alloy, The alloy of the metals such as kirsite carries out a kind of mould release used in punching press under high pressure, high-speed condition.Compression casting has life Produce efficiency high, short production procedure, casting finish and intensity are few compared with high, allowance, save the process characteristics such as metal material.

Being of wide application for die casting, is related to considerable product scope and industrial class.In this application, if with number Measure as many as big, kind, the height for requirements and many-sided synthesis such as metal material consumption is big in, auto industry should be first elected. Die casting be also widely used for it is all use the industry fields such as aluminium alloy, kirsite, magnesium alloy, include but is not limited to：Computer, sky Tune, refrigerator, television set, washing machine, computer, mobile phone, duplicator, lamp decoration, bicycle, door and window, architectural shape etc..

For a long time, auto industry is sure to occupy Die Casting Industry biggest market.Increasingly carried with to environmentally friendly, light-weighted requirement Increasing critical component in height, automobile is increasingly turned to Die Casting.Although each vehicle complete vehicle quality is gradually being successively decreased, Consumption of the die casting in each automobile is stepped up, and wherein aluminum alloy die casting accounts for more than the 65% of whole aluminium castings.In addition, On automobile in addition to aluminum alloy die casting, additionally use the die casting consumption in kirsite, Mg alloy castings, each car can think and Know.

Based on the development of different times Die Casting Industry, the application of casting mold-releasing agent can substantially be divided into single oils, oil With additive composite class and water based mold release agent three phases.

The Die Casting Industry early stage of development, die casting machine injection power is small, and speed is low, main production low-melting alloy die casting.Therefore, Single petroleum-type mineral oil even vegetable and animals oils grease can just meet requirement.Hereafter, with die casting application field and technology energy The continuous enlargement of power, casting mold-releasing agent also begins to multicomponent develop from single oils, 1920s, toward oil or water Middle incorporation graphite, stearic acid, wax, resin, clay, mica or other kollags, stripping result is significantly improved, but is also brought The problem of black pollution and solid phase powder are deposited on mould and cast(ing) surface.Oil gas diffuses during die casting, and stripping result is also paid no attention to Think.

Later stage 1970s, the environmental consciousness of people is increasingly strengthened, and the use of harmful material is more next More it is restricted, the progress of chemical industry also provides possibility for selection nonstaining property energy chemical products.Researcher, which introduces, to be had The serial die cast coating of water-based emulsion of chemical machine, lubrication and surface chemistry theoretical research exploitation is progressively looked forward to for increasing die casting Industry is used.

In general, water based mold release agent is at least made up of 3 kinds of components：Basic material, emulsifying agent and water.Basic material can be with It is considered active ingredient, it is final to play demoulding lubrication.Material therefor is generally oil, fat, wax, polymer and silicone thing Matter.The effect of emulsifying agent is to be homogeneously dispersed in above-mentioned material in continuous aqueous phase with the graininess of superfine cause, forms stable Emulsion, water is only used as carrier.

Due to a large amount of presence of water, therefore it result in traditional oil base or Solvent based release agents in very many differences.Water The demoulding effect of base releasing agent after spraying dependent on being deposited on thickness on mold cavity surface and there was only micron-sized film.Therefore into Component selections and using there is higher requirement in technique.But its advantage is also it will be apparent that being such as conducive to automation to grasp Make, good cooling results, do not produce accumulation, surface quality of continuous castings improve, internal porosity reduce and using safety, production clean, Reduce environmental pollution etc..

Wetting temperature is the major issue run into when water based mold release agent is applied.When spraying releasing agent to die cavity, such as Fruit type chamber surface temperature is too high, then the whole quick-fried release chamber surfaces of releasing agent drop meeting, make active ingredient therein not deposit to Mold cavity surface.Only temperature drop is to after a certain temperature value, and drop could have certain time of contact, die cavity table with mold cavity surface The active ingredient that face can occur between drop in heat transfer, drop just has an opportunity to deposit to mold cavity surface.If do not dropped to Stop spraying before this temperature, then do not have enough releasing agents and adhere to mold cavity surface, so as to influence stripping result.

In aluminium alloy process, it may appear that stamp out come metalwork sticking to mould situation, die casting occur carbon distribution, Nigrescence, out-of-flatness and the situation for playing pit, a large amount of smog can be also produced in die casting, pollute environment.Some demouldings of in the market Agent has small part and remains in metal surface after use, and workpiece is needed after the processes such as plating, cleaning, polishing after die casting Glazing, swabbing or paint could be carried out.Process is longer, and flow is more, there is higher cost of labor, both without preferably economical Benefit, also without energy-conserving and environment-protective.

The content of the invention

In order to solve prior art problem, the first aspect of the present invention provides a kind of environment-friendly type aqueous release combination of the demoulding Thing, in parts by weight, its raw material include：

The degree of polymerization of the polyvinyl alcohol is 2300-2500, and alcoholysis degree is 87-100%；The alkyl-silicone oil is 3- hexyls Heptamethyltrisiloxane.

In some embodiments, the polyvinyl alcohol is PVA24-88 and PVA24-99 mixture, the PVA24- 88 and PVA24-99 weight ratio is 1：(1.5-2).

In some embodiments, the weight ratio of the PVA24-88 and PVA24-99 are 1：1.8.

In some embodiments, the preparation method of the sulfonated methyl cellulose is：8.4g methylcellulose is existed 1h is stirred in 50mL 30wt% aqueous hydrogen peroxide solutions, then solvent is evaporated with Rotary Evaporators, 50mL tetrahydrochysene furans are added Mutter, be then cooled with an ice bath, maintain the temperature at less than 5 DEG C, 1.2mL chlorosulfonic acids are added dropwise, 2h is then persistently stirred, after reaction terminates Solvent is evaporated with Rotary Evaporators, then washed three times with acetone, every time using 10mL, 5h is then dried in vacuo, produces.

In some embodiments, the one kind of the solvent naphtha in D20, D40, D60.

In some embodiments, the AEO is selected from AEO-80 or AEO-100.

In some embodiments, the imidazolines are selected from 2- benzylimidazolines, 2- mercaptoimidazolines, 2- second Base imidazoline, 2- methyl -2- imidazolines, 2- ethyl -2- imidazolines, 2,4- dimethyl -2- imidazolines, 2- (ethylmercapto group) -2- miaows Oxazoline, 2- (methyl mercapto) -2- imidazolines, 2- (4- methoxyphenyls) -1- imidazolines, 2- (2- methyl -2- imidazoline -1- bases) second Alcohol, 2- (2- nonyl -2- imidazoline -1- bases) ethanol, 3- (2- imidazoline -2- bases) -2- imidazolidine thiones, 1- (2- amino second Base) -2- methyl -2- imidazolines, 2- methoxyl groups imidazoline, one kind in 1- (2- amino-ethyls) -2- imidazolones.

In some embodiments, the isothiazolinone compound is selected from 5- chloro-2-methyl -1- isothiazolines -3- At least one of ketone, 2- methyl isophthalic acids-isothiazoline -3- ketone.

In some embodiments, in parts by weight, its raw material includes：

The second aspect of the present invention provides a kind of preparation method of environment-friendly type aqueous demoulding parting composition as described above, Comprise the following steps：

OPE, diisooctyl succinate sodium sulfonate, polyacrylamide, deionized water are added in container, Alkyl-silicone oil is added under agitation, mixing speed is 200-300rpm, stir 10-20min, be heated to 35 DEG C, add sulfonation Methylcellulose, cyclodextrin, imidazolines, isothiazolinone compound, are incubated 10min, are again heated to 50 DEG C, tune Section mixing speed is 500-600rpm, sequentially adds AEO, solvent naphtha, polyvinyl alcohol, is continued at 50 DEG C 10min is stirred, room temperature is subsequently cooled to, adds isopropanol, isopropanolamine, stir, produce.

The environment-friendly type aqueous demoulding parting composition that the present invention is provided is used in the metals such as kirsite, aluminium alloy, die carter In industry or precision metal Die Casting Industry system.Prevent from stamping out the metalwork sticking to mould set come, have superior anti-sticking to mould function and change Kind cooling system.And improve metalwork surface brightness, effectively prevent die casting nigrescences, out-of-flatness, rise fiber crops pit, carbon distribution, The problems such as oligomer is assembled., can be without polishing, mold cleaning in part smallclothes metal 30 days, and cost performance is very high, big part Die casting or the alloy components of difficult die casting more than 20 days can be without polishings, mold cleaning., can be without throwing in highly difficult die casting 10 days Light, mold cleaning, largely reduce the flight-line maintenance time.It is that manufacturing schedule and production efficiency are greatly improved, together When also for the energy save consumption and work the production time and yield lifting be improved.

The demoulding parting composition that the present invention is provided, can be resistant to 360-380 DEG C of mould temperature, not carbon distribution, do not black, do not play fiber crops Point, the smog very little formed under the die casting condition of high temperature is very environmentally friendly.The aluminium alloy that die casting goes out can directly japanning, glazing, no With the process by the power consumptions such as plating, cleaning, polishing and pollution, it is only necessary to just can directly be carried out after simple edge-trimming corner Subsequent handling.Shorten technological process, saved the production time, reduce cost of labor, improve economic benefit.The present invention's Technical scheme plays the role of extraordinary energy-saving and emission-reduction, contamination-reducing synergistic, meets the developing direction of national policy.

Embodiment

Unless otherwise defined, all technologies used herein and scientific terminology have and the common skill of art of the present invention The identical implication that art personnel are generally understood that.When there is contradiction, the definition in this specification is defined.

Quality, concentration, temperature, time or other values or parameter are preferred with scope, preferred scope or a series of upper limits During the Range Representation that value and lower preferable values are limited, this, which is appreciated that, specifically discloses by any range limit or preferred value All scopes that any pairing with any range lower limit or preferred value is formed, regardless of whether whether the scope separately discloses. For example, 1-50 scope is understood to include selected from 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18, 19、20、21、22、23、24、25、26、27、28、29、30、31、32、33、34、35、36、37、38、39、40、41、42、43、 44th, 45,46,47,48,49 or 50 any numeral, number combinatorics on words or subrange and all between above-mentioned integer Fractional value, for example, 1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8 and 1.9.It is specific to consider from scope on subrange Interior any end points starts " the nested subrange " of extension.For example, exemplary range 1-50 nested subrange can include 1-10,1-20,1-30 and 1-40 on one direction, or 50-40,50-30,50-20 and 50-10 on other direction.

Die casting is that solution metal is injected into die casting with high speed and high pressure, in producing at the scene, and compression mod glues metal warp Often produce.Particularly in aluminium alloy process,

Viscous aluminium is the chemical reaction between compression mod and aluminum alloy materials in press casting procedure.Viscous aluminium will cause die casting to produce Raw defect, in the subsequent production of die casting, the viscous aluminium position of mould is handled without sanding and polishing, and viscous aluminium position will make production Die casting misrun, the casting of light defects can be utilized after grinding process, and the serious casting of misrun is directly resulted in Product rejection.

When the molten aluminium alloy of high-temperature enters mould, when aluminium liquid is directly directly contacted with mold cavity, mould table is destroyed The compacted zone in face, particularly mould enter to pour position, are the positions for being easiest to occur viscous aluminium.Die surface will cause a series of anti- Should, mould is damaged.Die casting has high temperature, at a high speed high pressure and three big features.Pack alloy liquid temperature spends height, will lead Mould is caused to glue aluminium phenomenon, it is necessary to strictly be controlled cast temperature.Because aluminium alloy has very strong affinity to ferro element, because This is analyzed firstly the need of to aluminium alloy.Iron content in aluminium alloy is too low (being less than 0.7%), and this aluminium alloy is just very Viscous aluminium phenomenon easily occurs with mould.The releasing agent used in die casting also has a significant impact to viscous aluminium.In order to prevent viscous aluminium from being formed, Need to use the releasing agent of better performances.When Contact Temperature between pack alloy liquid and die surface is close to 700-750 DEG C, It is easiest to occur near viscous aluminium, particularly cast gate.Corner connection nearly 180 degree should be just avoided contact with during mold design as far as possible, so The possibility that mould glues aluminium can be reduced.When the temperature of mould is uprised suddenly, the aluminum alloy melt and mould of high-temperature react, and And when the compound of contact surface is changed into aluminaferrous mixture, will occur viscous aluminium phenomenon.With the increase of viscous aluminum amount, in mould table Accumulation on face also will increase.Viscous aluminium can be such that casting is bonded on mould, and be difficult to separate casting from mould. The reason for now resulting in generation viscous aluminium also has a lot, including Al-alloy metal stream with larger angle when being entered in mold cavity, These aluminum alloy melts are forced to be contacted with mould；Amount into the Al-alloy metal stream of mould is relatively large therefore needs to use The demoulding mould release of better performances.

The mold temperature of aluminium alloy compression casting at 380 DEG C or so, and inject temperature of aluminum liquid more than 600 DEG C, this is required The film formed after emulsion moisture evaporation is resistant to high pressure, high temperature aluminium liquid and washed away.In press casting procedure, mould constantly by High temperature fluent metal is heated, and its temperature constantly rises.Too high mold temperature, will make die casting produce some defects, such as sticking to mould, Bubbling, burst apart, hot tearing etc., while mould is operated in hot environment for a long time, mold materials intensity declines, and causes mould table Facial cleft line, causes die life to decline.

The requirement of die casting aqueous release agent has high stability and extraordinary demolding performace, and needs after dilution Stability is good.High-quality releasing agent is formulated by 15-25 kind raw materials mostly, if wherein crucial composition or additive change 1%, its stripping feature may have very big difference.

Extrusion temperature is high in aluminium alloy process, metal stickness is strong, it is desirable to releasing agent have good lubrication and Demolding performace.Require that releasing agent has enough adsorption strengths to metal surface at high temperature, can during flow of metal shape Into complete screen layer, and there is relatively low coefficient of friction.Good cooling and thermal insulation.Hot extrusion blank temperature is higher, then Plus plastic deformation heat and frictional heat, easily decline mould strength, abrasion is accelerated, so that reduction of service life.Good releasing agent Should have temperature with high efficiency effect and heat-blocking action, mould is worked at a lower temperature.Good high temperature lubrication property.As Hot extrusion releasing agent must possess good greasy property, just can guarantee that the performance of its lubricating release.Good stability.It is good Good stability is to require that releasing agent does not aoxidize in the range of temperature in use, do not burnt, and retention property is constant.In addition, using During releasing agent should not produce pernicious gas and smog.

The technical indicator of aluminium alloy requirement is higher than kirsite, magnesium alloy, can meet the demoulding of aluminium alloy processing request from Type composition can also be applied to the process of other alloys such as kirsite, magnesium alloy.

Zinc alloy diecasting is typically produced using hot chamber machine.During whole die cast metal, the effect of releasing agent Mainly before molten metal injection, mold cavity surface is first evenly distributed on, so as to form one layer of isolation between mould and molten metal Film, makes die cavity directly washing away from molten metal bath；In press casting procedure, contribute to molten metal to enter die cavity, make to fill type complete It is good；The demoulding can be made it easier to after casting shaping.

The role of range request and releasing agent are crossed according to extrusion process, should be had for zinc alloy diecasting releasing agent good Film forming.Zinc alloy diecasting temperature is general more than 400 DEG C, it is desirable to which releasing agent can form uniform lubrication at these elevated temperatures Film, it is to avoid molten metal directly washes away to die cavity.With good cooling and lubricity, the time of one-step die casting is general Within 10s, including the idle loop cycle, instant opening type, mould assembly, injection, injection backhaul, anti-material, reverse ejection and push up back.Molten metal From 300-400 DEG C of High-temperature cooling, solidification, sizing to product, it is desirable to which releasing agent has good cooling performance, while to prevent casting Part sticking to mould, fluffing, releasing agent must have good lubricating release ability.Releasing agent should be able to be formed suitable thickness lubricating film and With suitable lubricity and venting quality, to ensure that die casting has preferable surface smoothness and inside not to produce stomata.It is stale-proof Mould and workpiece are lost, it is good to subsequent handling adaptability, do not influence to paint, electroplate.Smog is less when using or non smoke, will not Working environment is impacted.

The first aspect of the present invention provides a kind of environment-friendly type aqueous demoulding parting composition, in parts by weight, its raw material bag Include：

Inventor has found that the compatibility of dimethicone is poor under study for action, under causing under high temperature or preserving for a long time Layering occurs, the release effect of the reduction demoulding can improve demoulding parting composition using 3- hexyls heptamethyltrisiloxane Stability and ensure stripping result, be on the one hand improve and other compositions compatibility, on the one hand can make the particle diameter of emulsion compared with It is small.

In some embodiments, the weight ratio of the PVA24-88 and PVA24-99 are 1：1.8.

Polyvinyl alcohol is a kind of organic compound, and white plates, cotton-shaped or pulverulent solids are tasteless.The thing of polyvinyl alcohol Rationality matter is influenceed by chemical constitution, alcoholysis degree, the degree of polymerization.The degree of polymerization is higher, and the viscosity of the aqueous solution is bigger, the intensity after film forming Improved with solvent resistance, but elongation declines after dissolubility, film forming in water.The PVA24-88 degree of polymerization is 2300-2500, alcoholysis Spend for 87-89%, the PVA24-99 degree of polymerization is 2300-2500, and alcoholysis degree is 98-100%.PVA24-88's and PVA24-99 Weight ratio is 1：When 1.8, it is possible to increase the film-strength after film forming, while having suitable dissolubility in the solution.

Sulfonated methyl cellulose can improve the demoulding parting composition film forming after stability, while with the methyl of 3- hexyls seven Trisiloxanes plays synergy, improves the structure of film, enables demoulding parting composition Reusability more than 10 times.On cyclodextrin Hydroxyl is more, can improve the dissolubility of each component, improves stability.

In some embodiments, the one kind of the solvent naphtha in D20, D40, D60.

The polarity of solvent naphtha is smaller, can not only adjust dissolubility of the other materials in water, can also suitably adjust viscous Degree, improves stability.

In some embodiments, the AEO is selected from AEO-80 or AEO-100.

In some embodiments, the isothiazolinone compound is selected from 5- chloro-2-methyl -1- isothiazolines -3- At least one of ketone, 2- methyl isophthalic acids-isothiazoline -3- ketone.For example, Kathon CG, CY-1.

In some embodiments, in parts by weight, its raw material includes：

It using the preparation method of the present invention, can prevent composition from being lumpd in water, facilitate the dissolving of each material, and it is long Time stable preservation.

The present invention is expanded on further with reference to specific embodiment.

Embodiment

A1 3- hexyl heptamethyltrisiloxanes

A2 heptamethyltrisiloxanes

A3 dimethicones

B1 PVA-124s 88

B2 PVA-124s 99

C sulfonated methyl celluloses

The preparation method of sulfonated methyl cellulose is：8.4g methylcellulose is water-soluble in 50mL 30wt% hydrogen peroxide 1h is stirred in liquid, then solvent is evaporated with Rotary Evaporators, 50mL tetrahydrofurans is added, is then cooled with an ice bath, is kept 1.2mL chlorosulfonic acids are added dropwise below 5 DEG C in temperature, then persistently stir 2h, and reaction is steamed solvent with Rotary Evaporators after terminating It is dry, then washed three times with acetone, every time using 10mL, 5h is then dried in vacuo, is produced.

D beta-schardinger dextrins

E D40 solvent naphthas

F isopropanols

G OPEs

H diisooctyl succinate sodium sulfonates

I polyacrylamides

J isopropanolamines

K1 AEO-80

K2 AEO-100

L 2,4- dimethyl -2- imidazolines

M Kathon CGs

N deionized waters

	Example 1	Example 2	Example 3	Example 4	To 1	To 2	To 3	To 4	To 5
										A1	5	4	5	5			5	5	5
A2					5
										A3						5
B1	3	3	8.4		3	3	3	3	3
										B2	5.4	5.4		8.4	5.4	5.4	5.4	5.4	5.4
C	4	5	4	4	4	4		4	4
										D	2	3	2	2	2	2	2		2
E	2	1	2	2	2	2	2	2
										F	3	4	3	3	3	3	3	3	3
G	4	5	4	4	4	4	4	4	4
										H	3	2	3	3	3	3	3	3	3
I	10	8	10	10	10	10	10	10	10
										J	0.5	0.1	0.5	0.5	0.5	0.5	0.5	0.5	0.5
K1	8		8	8	8	8	8	8	8
										K2		10
L	0.8	0.5	0.8	0.8	0.8	0.8	0.8	0.8	0.8
										M	1.5	2	1.5	1.5	1.5	1.5	1.5	1.5	1.5
N	58	60	58	58	58	58	58	58	58

1. stability test

Embodiment 1-4 and comparative example 1-5 are placed in the container of transparent sealing, three months are stood under 65 DEG C of constant temperature, There is the time settled in record, and no sedimentation occurs being designated as A, sedimentation occurs within 2-3 months and be designated as B, sedimentation occur and be designated as C within 1-2 months, Occur sedimentation in 1 month and be designated as D.

2. release property is tested

1) embodiment 1-4 and comparative example 1-5 is diluted 120 times with deionized water, dilution is sprayed to and has been heated to 280 On DEG C steel plate polished smooth, spraying steel plate releasing agent partial insertion molten aluminum liquid in 5 seconds, taken out after 15 seconds.Do not soak before aluminium Plate quality is m1, and plate quality is plate quality rate of change w1=(m2-m1)/m1 × 100% before and after m2, leaching aluminium after leaching aluminium. A, 0.1% are recorded as during w1≤0.1%<B, 0.5% are recorded as during w1≤0.5%<C is recorded as during w1.

2) embodiment 1-4 and comparative example 1-5 is diluted 120 times with deionized water, dilution is sprayed to and has been heated to 280 On DEG C steel plate polished smooth, spraying steel plate releasing agent partial insertion molten aluminum liquid in 5 seconds, take out, be repeatedly inserted into after 15 seconds Molten aluminum liquid 10 times, performance of the test demoulding parting composition after Reusability 10 times.Aluminium front spring quality is not soaked for m1, It is plate quality rate of change w2=(m3-m1)/m1 × 100% before and after m3, leaching aluminium to soak plate quality after aluminium.Remember during w2≤0.1% Record as A, 0.1%<B, 0.5% are recorded as during w2≤0.5%<C is recorded as during w2.

Test result is listed in the following table.

Example 1

Example 2

Example 3

Example 4

To 1

To 2

To 3

To 4

To 5

Stability

A

D

B

w1

A

B

C

B

w2

A

B

C

Foregoing example is merely illustrative, some features for explaining the present invention.Appended claim is intended to The scope as wide as possible being contemplated that is sought, and embodiments as presented herein is only the combination according to all possible embodiment Selection embodiment explanation.Therefore, the purpose of applicant is appended claim not by the feature of the explanation present invention Example selectional restriction.And the progress in science and technology by formed language performance it is inaccurate due to and it is not current The possible equivalent or son considered is replaced, and these changes should also be interpreted to be wanted by appended right in the conceived case Ask covering.

Claims

1. environment-friendly type aqueous demoulding parting composition, it is characterised in that in parts by weight, its raw material includes：

The degree of polymerization of the polyvinyl alcohol is 2300-2500, and alcoholysis degree is 87-100%；The alkyl-silicone oil is the first of 3- hexyls seven Base trisiloxanes.

2. environment-friendly type aqueous demoulding parting composition as claimed in claim 1, it is characterised in that the polyvinyl alcohol is PVA24-88 and PVA24-99 mixture, the weight ratio of the PVA24-88 and PVA24-99 are 1：(1.5-2).

3. environment-friendly type aqueous demoulding parting composition as claimed in claim 2, it is characterised in that the PVA24-88 with PVA24-99 weight ratio is 1：1.8.

4. environment-friendly type aqueous demoulding parting composition as claimed in claim 1, it is characterised in that the sulfonated methyl cellulose Preparation method be：8.4g methylcellulose is stirred into 1h in 50mL 30wt% aqueous hydrogen peroxide solutions, then steamed with rotation Solvent is evaporated by hair instrument, is added 50mL tetrahydrofurans, is then cooled with an ice bath, and maintains the temperature at less than 5 DEG C, and 1.2mL is added dropwise Chlorosulfonic acid, then persistently stirs 2h, and solvent is evaporated by reaction after terminating with Rotary Evaporators, then washs with acetone three times, every time Using 10mL, 5h is then dried in vacuo, is produced.

5. environment-friendly type aqueous demoulding parting composition as claimed in claim 1, it is characterised in that the solvent naphtha be selected from D20, One kind in D40, D60.

6. environment-friendly type aqueous demoulding parting composition as claimed in claim 1, it is characterised in that the aliphatic alcohol polyethenoxy Ether is selected from AEO-80 or AEO-100.

7. environment-friendly type aqueous demoulding parting composition as claimed in claim 1, it is characterised in that the imidazolines Selected from 2- benzylimidazolines, 2- mercaptoimidazolines, 2- ethyl imidazol(e)s quinoline, 2- methyl -2- imidazolines, 2- ethyl -2- imidazolines, 2, 4- dimethyl -2- imidazolines, 2- (ethylmercapto group) -2- imidazolines, 2- (methyl mercapto) -2- imidazolines, 2- (4- methoxyphenyls) -1- Imidazoline, 2- (2- methyl -2- imidazoline -1- bases) ethanol, 2- (2- nonyl -2- imidazoline -1- bases) ethanol, 3- (2- imidazolines - 2- yls) -2- imidazolidine thiones, 1- (2- amino-ethyls) -2- methyl -2- imidazolines, 2- methoxyl groups imidazoline, 1- (2- amino second Base) one kind in -2- imidazolones.

8. environment-friendly type aqueous demoulding parting composition as claimed in claim 1, it is characterised in that the isothiazolinone Compound is selected from least one of 5- chloro-2-methyl -1- isothiazoline -3- ketone, 2- methyl isophthalic acids-isothiazoline -3- ketone.

9. environment-friendly type aqueous demoulding parting composition as claimed in claim 1, it is characterised in that in parts by weight, its raw material Including：

10. a kind of preparation of environment-friendly type aqueous demoulding parting composition as described in any one of claim 1-9 claim Method, it is characterised in that comprise the following steps：

OPE, diisooctyl succinate sodium sulfonate, polyacrylamide, deionized water are added in container, stirred Lower addition alkyl-silicone oil is mixed, mixing speed is 200-300rpm, stir 10-20min, be heated to 35 DEG C, add sulfonated methyl Cellulose, cyclodextrin, imidazolines, isothiazolinone compound, are incubated 10min, are again heated to 50 DEG C, regulation is stirred Speed is mixed for 500-600rpm, AEO, solvent naphtha, polyvinyl alcohol is sequentially added, is persistently stirred at 50 DEG C 10min, is subsequently cooled to room temperature, adds isopropanol, isopropanolamine, stirs, produces.