CN112694617B - Modified silicone oil, surfactant, preparation method and application thereof - Google Patents
Modified silicone oil, surfactant, preparation method and application thereof Download PDFInfo
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Abstract
The invention disclosesA modified silicone oil, a surfactant, a preparation method and an application thereof are disclosed, which belong to the technical field of surfactants. The structure of the modified silicone oil is
m is 1-20, n is 1-15, p is 1-15, m + n + p is 3-20, R1Is R2Or R3。R2is-CH2CH2CH2O(CH2CH2O)a(CH2CH(CH3)O)bR4A is 1-10, b is 0-10, and a + b is 1-15, R4Is C1-C4 alkyl. R3is-CH2CH(R7)CH2Cl，R7Selected from ester group, nitrile group, ketone group, aldehyde group, sulfone group or hydrogen atom. The surfactant prepared from the modified silicone oil has obvious effects on adjustment of the foam cell structure of the foam, control of the foam stability and the like.
Description
Technical Field
The invention relates to the technical field of surfactants, and particularly relates to modified silicone oil, a surfactant, and preparation methods and applications thereof.
Background
High resilience polyurethane foam (HR) is a kind of foam with excellent performance, and is developed fast at home and abroad and widely used. Compared with common soft foam plastics, the product has the characteristics of light weight, good resilience, sound absorption and shock absorption, is an ideal mat and cushion material, and is widely applied to the aspects of manufacturing seats, back cushions and headrests of vehicles (automobiles, trains, airplanes and the like).
Surfactants play a very important role in the foaming of high resilience polyurethanes. The silicone surfactants currently used to prepare high resilience polyurethane foams are typically polydimethylsiloxanes, organofunctional polydimethylsiloxanes or silicone polyether copolymers. Wherein, the single polydimethylsiloxane component or the mixture of the polydimethylsiloxane and the siloxane polyether copolymer is taken as the main component. However, the mixing regulation of the pure polyether modified silicone has certain limitations in the application performance, especially in the regulation of the pore-opening performance.
Along with the widening of the high-resilience polyurethane foam in different application fields, various special performance requirements are generated, and higher requirements are provided for the high-resilience polyurethane foam surfactant.
In view of this, the invention is particularly proposed.
Disclosure of Invention
One of the objects of the present invention consists in providing a modified silicone oil which can be used for the preparation of surfactants to solve the above technical problems.
The second purpose of the invention is to provide a preparation method of the modified silicone oil.
The third object of the present invention is to provide the use of the above-mentioned modified silicone oil, for example, for preparing a surfactant.
The fourth object of the present invention is to provide a surfactant containing the modified silicone oil.
The fifth purpose of the invention is to provide a preparation method of the surfactant.
The sixth purpose of the invention is to provide a polyurethane foam added with the surfactant in the preparation process.
The application can be realized as follows:
in a first aspect, the present application provides a modified silicone oil having a structural formula
Wherein m has a value of 1-20, n has a value of 1-15, p has a value of 1-15, and m + n + p has a value of 3-20, R1Is R2Or R3. Wherein R is2Has the structure simple formula of-CH2CH2CH2O(CH2CH2O)a(CH2CH(CH3)O)bR4A has a value of 1-10, b has a value of 0-10, and a + b has a value of 1-15, R4Is an alkyl group having 1 to 4 carbon atoms;
R3has the structure simple formula of-CH2CH(R7)CH2Cl, wherein R7Selected from ester group, nitrile group, ketone group, aldehyde group, sulfone group or hydrogen atom.
In alternative embodiments, R7Is selected from-CO2Me、-CO2Et、-CO2n-Bu、-CN、-COCH3、-CH3or-H.
In a second aspect, the present application also provides a method for preparing the modified silicone oil according to any one of the preceding embodiments, including the steps of: reacting hydrogen-containing silicone oil with allyl polyether, allyl chloride derivative, a first catalyst and a cocatalyst, wherein the hydrogen-containing silicone oil is obtained by reacting octamethylcyclotetrasiloxane, high hydrogen-containing silicone oil and hexamethyldisiloxane or reacting octamethylcyclotetrasiloxane, high hydrogen-containing silicone oil and 1,1,3, 3-tetramethyldisiloxane under the action of a second catalyst.
In an alternative embodiment, the reaction temperature for preparing the hydrogen-containing silicone oil is 30-90 ℃ and the reaction time is 5-8 h.
In an alternative embodiment, the reaction temperature for preparing the modified silicone oil is 70-150 ℃ and the reaction time is 2-10 h.
In an alternative embodiment, the second catalyst is an acidic catalyst.
In an alternative embodiment, the acidic catalyst comprises at least one of acid clay, sulfuric acid, trifluoromethanesulfonic acid, and an acidic resin.
In an alternative embodiment, the acidic catalyst is an acid clay.
In an alternative embodiment, the acidic catalyst comprises 3 to 6 wt% of the total mass of the feedstock for the preparation of hydrogen-containing silicone oil.
In an alternative embodiment, the first catalyst is a platinum-containing catalyst.
In an alternative embodiment, the first catalyst is a chloroplatinic acid catalyst.
In an alternative embodiment, the first catalyst accounts for 3 to 20ppm of the total amount of raw materials for preparing the modified silicone oil.
In alternative embodiments, the co-catalyst comprises at least one of acetamide, diethanolamine, N-butylethanolamine, triethanolamine, and triethylamine.
In an alternative embodiment, the co-catalyst is present in an amount of 50 to 2000ppm based on the total amount of raw materials for preparing the modified silicone oil.
In a third aspect, the present application also provides the use of a modified silicone oil as in any one of the preceding embodiments, for example for the preparation of a surfactant.
In a fourth aspect, the present application also provides a surfactant containing the modified silicone oil according to any one of the preceding embodiments.
In an alternative embodiment, the modified silicone oil is present in the surfactant in an amount of 5 to 30% by weight.
In an alternative embodiment, the surfactant further comprises a surfactant of the formula
Wherein q is 5 to 10.
In an alternative embodiment, the weight percentage of dimethicone in the surfactant is 1-10%.
In an alternative embodiment, the surfactant further comprises a copolymer having terminal hydroxyl groups derived from a polyol, wherein the polyol comprises a low molecular weight polyol.
In alternative embodiments, the low molecular weight polyol comprises ethylene glycol, 1, 2-propylene glycol, 1, 3-butylene glycol, 1, 4-butylene glycol, 1, 6-hexanediol, neopentyl glycol, diethylene glycol, dipropylene glycol, glycerol, or n-butanol.
In an alternative embodiment, the molecular weight of the copolymer is 300-3000.
In an alternative embodiment, the weight percentage of the copolymer in the surfactant is 60-90%.
In a fifth aspect, the present application also provides a method of preparing a surfactant according to any one of the preceding embodiments, comprising the steps of: and preparing the modified silicone oil into a surfactant.
In an alternative embodiment, when the raw material of the surfactant further contains dimethylsilicone oil and a copolymer having terminal hydroxyl groups derived from a polyol, the surfactant is obtained by mixing the modified silicone oil with dimethylsilicone oil and a copolymer having terminal hydroxyl groups derived from a polyol.
In a sixth aspect, the present application also provides a polyurethane foam prepared by adding a surfactant according to any one of the preceding embodiments.
The beneficial effect of this application includes:
the modified silicone oil with the specific structure is beneficial to preparing the surfactant capable of improving the strength of polyurethane foam and adjusting the porosity and the foam stability of the polyurethane high-resilience foam. The preparation method is simple and easy to operate. The surfactant containing the modified silicone oil can effectively improve the product performance of polyurethane foam. The polyurethane foam containing the surfactant has good open-cell performance and stability.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The modified silicone oil, the surfactant, the preparation method and the application thereof provided by the application are specifically described below.
The application provides modified silicone oil with a structural formula
Wherein m has a value of 1-20, n has a value of 1-15, p has a value of 1-15, and m + n + p has a value of 3-20, R1Is R2Or R3. Wherein R is2Has the structure simple formula of-CH2CH2CH2O(CH2CH2O)a(CH2CH(CH3)O)bR4A has a value of 1-10, b has a value of 0-10, and a + b has a value of 1-15, R4Is an alkyl group having 1 to 4 carbon atoms.
R3Has the structure simple formula of-CH2CH(R7)CH2Cl, wherein R7Selected from ester group, nitrile group, ketone group, aldehyde group, sulfone group or hydrogen atom.
In reference, m may have a value of 1, 5, 10, 15, 20, etc., or any other value within the range of 1 to 20. Each of n and p independently has a value of1.5, 10, 12, 15, etc., and may have any other value within the range of 1-15. The value of a may be 1,2, 5, 8, 10, etc., or may be any other value within the range of 1 to 10. The value of b may be 0, 2, 5, 8, 10, etc., or may be any other value within the range of 0 to 10. R4May be an alkyl group having 1,2, 3 or 4 carbon atoms.
In alternative embodiments, R7Is selected from-CO2Me、-CO2Et、-CO2n-Bu、-CN、-COCH3、-CH3or-H.
The co-modified silicone oil is obtained by introducing allyl chloride derivatives with different structures on the basis of single polyether modified silicone oil, so that the strength of the elastomer can be improved, and new properties are endowed to the elastomer.
The preparation method of the modified silicone oil can refer to the following steps: reacting hydrogen-containing silicone oil with allyl polyether, allyl chloride derivative, a first catalyst and a cocatalyst.
The reaction temperature for preparing the modified silicone oil can be 70-150 ℃, such as 70 ℃, 80 ℃, 100 ℃, 120 ℃ or 150 ℃ and the like, and the reaction time can be 2-10h, such as 2h, 4h, 5h, 8h or 10h and the like.
Wherein the hydrogen-containing silicone oil is obtained by reacting octamethylcyclotetrasiloxane, high hydrogen-containing silicone oil and hexamethyldisiloxane or octamethylcyclotetrasiloxane, high hydrogen-containing silicone oil and 1,1,3, 3-tetramethyldisiloxane under the action of a second catalyst.
In alternative embodiments, the reaction temperature for preparing the hydrogen-containing silicone oil may be 30-90 ℃, such as 30 ℃, 40 ℃, 50 ℃, 60 ℃, 70 ℃, 80 ℃ or 90 ℃ and the like, and the reaction time may be 5-8h, such as 5h, 6h, 7h or 8h and the like.
In an alternative embodiment, the second catalyst is an acidic catalyst, and may include at least one of acid clay, sulfuric acid, trifluoromethanesulfonic acid, and an acidic resin, for example. In a preferred embodiment, the acidic catalyst is an acid clay.
The acidic catalyst may be referred to as 3 to 6 wt%, such as 3 wt%, 4 wt%, 5 wt%, or 6 wt%, etc., of the total mass of the raw material for preparing the hydrogen-containing silicone oil.
In an alternative embodiment, the first catalyst is a platinum-containing catalyst, such as a chloroplatinic acid catalyst.
The first catalyst may be referred to as 3 to 20ppm, such as 3ppm, 5ppm, 10ppm, 15ppm or 20ppm, etc., based on the total amount of the raw materials for preparing the modified silicone oil.
In alternative embodiments, the co-catalyst may include, for example, at least one of acetamide, diethanolamine, N-butylethanolamine, triethanolamine, and triethylamine.
The co-catalyst may, by reference, be present in an amount of 50 to 2000ppm, such as 50ppm, 100ppm, 500ppm, 1000ppm, 1500ppm or 2000ppm, etc., based on the total amount of the raw materials for preparing the modified silicone oil.
Further, the application also provides the application of the modified silicone oil, such as the modified silicone oil which can be used for preparing a surfactant, especially a surfactant for polyurethane foam.
Correspondingly, the application provides a surfactant which contains the modified silicone oil with the specific structural formula and is beneficial to improving the strength of the polyurethane foam and adjusting the porosity and stability of the polyurethane high-resilience foam.
In the present application, the weight percentage of the modified silicone oil in the surfactant may be 5 to 30%, such as 5%, 10%, 15%, 20%, 25%, or 30%.
Further, the surfactant provided by the application also contains a surfactant with a structural formula shown in the specification
Wherein q has a value of 5 to 10, such as 5, 6, 7, 8, 9 or 10, etc.
In alternative embodiments, the weight percentage of dimethicone in the surfactant may be 1-10%, such as 1%, 2%, 5%, 8%, or 10%, etc.
In addition, the surfactants provided herein also contain copolymers having terminal hydroxyl groups derived from polyols, wherein the polyols include low molecular weight polyols.
In alternative embodiments, the low molecular weight polyol comprises ethylene glycol, 1, 2-propylene glycol, 1, 3-butylene glycol, 1, 4-butylene glycol, 1, 6-hexanediol, neopentyl glycol, diethylene glycol, dipropylene glycol, glycerol, or n-butanol.
In an alternative embodiment, the molecular weight of the copolymer is 300-3000.
In alternative embodiments, the weight percentage of the copolymer in the surfactant may be 60-90%, such as 60%, 65%, 70%, 75%, 80%, 85%, or 90%, etc.
On the basis, the obtained co-modified silicone oil and the dimethyl silicone oil are blended, so that the open pore property and the stability of the polyurethane foam (polyurethane high-resilience foam) can be further effectively regulated, and the foam pores and the surface property of the polyurethane foam can be further effectively regulated.
In addition, the application also provides a preparation method of the surfactant, which comprises the following steps: and preparing the surfactant from the modified silicone oil.
When the raw material of the surfactant contains dimethylsilicone oil and a copolymer having a terminal hydroxyl group derived from a polyhydroxy compound, the surfactant is obtained by mixing modified silicone oil with dimethylsilicone oil and a copolymer having a terminal hydroxyl group derived from a polyhydroxy compound.
It is to be noted that the mixing of the modified silicone oil, the dimethylsilicone oil and the copolymer having terminal hydroxyl groups derived from the polyol compound may be carried out at 55 to 65 ℃ for 1.5 to 2.5 hours, preferably at 60 ℃ for 2 hours.
Further, the present application also provides the use of the above surfactant, for example, for the preparation of polyurethane foam (polyurethane high resilience foam). Correspondingly, the application also provides a polyurethane foam, and the surfactant is added in the preparation process of the polyurethane foam. The system compatibility of the polyurethane foam, the surface property and the dimensional stability of the polyurethane foam can be effectively regulated and controlled.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
This example provides a surfactant prepared by the following procedure:
(1) synthesis of modified Silicone oil A1
116.55g of octamethylcyclotetrasiloxane, 28.72g of high hydrogen-containing silicone oil and 34.73g of hexamethyldisiloxane are reacted at 60 ℃ for 7 hours under the action of acid clay to obtain the hydrogen-containing silicone oil.
Adding 60g of the hydrogen-containing silicone oil, 48.36g of allyl polyether and 5.7g of allyl chloride into a reactor, heating to 90 ℃ under normal pressure under the conditions of 10ppm of chloroplatinic acid catalyst and 200ppm of diethanolamine cocatalyst, and reacting for 7 hours to obtain modified silicone oil A1, wherein the molecular formula is as follows: si (CH)3)3-O-[Si(CH3)2-O]7-[Si(CH3)R2-O]1-[Si(CH3)R3-O]1-Si(CH3)3Wherein R is2＝-CH2CH2CH2O(CH2CH2O)7(CH2CH(CH3)O)2CH3；R3＝-CH2CH2CH2Cl。
(2) The modified silicone oil A1, dimethyl silicone oil B1 and copolymer C1 with terminal hydroxyl groups derived from polyhydroxy compounds are stirred and mixed for 2 hours at the temperature of 60 ℃ according to different proportions (shown in Table 1) to obtain the surfactant.
The dimethyl silicone oil B1 has a structural formula
The simethicone b1 and the simethicone b2, wherein the q of the simethicone b1 is 5, and the q of the simethicone b2 is 6. The mass ratio of the dimethyl silicone oil b1 to the dimethyl silicone oil b2 is 1: 1.
the copolymer C1 with terminal hydroxyl groups derived from a polyol is a polyether polyol with propylene glycol as initiator and has a molecular weight of 500.
Example 2
This example provides a surfactant prepared by the following procedure:
(1) synthesis of modified Silicone oil A2
108.42g of octamethylcyclotetrasiloxane, 40.08g of high hydrogen silicone oil and 31.51g of hexamethyldisiloxane are reacted for 6 hours at 80 ℃ under the action of acid clay to obtain the hydrogen silicone oil.
Adding 60g of the hydrogen-containing silicone oil, 69.21g of allyl polyether and 5.3 g of allyl chloride into a reactor, heating to 90 ℃ under normal pressure under the conditions of 10ppm of chloroplatinic acid catalyst and 200ppm of diethanolamine cocatalyst, and reacting for 10 hours to obtain modified silicone oil A2, wherein the molecular formula is as follows: si (CH)3)3-O-[Si(CH3)2-O]7-[Si(CH3)R2-O]2-[Si(CH3)R3-O]1-Si(CH3)3Wherein R is2＝-CH2CH2CH2O(CH2CH2O)7(CH2CH(CH3)O)2CH3；R3＝-CH2CH2CH2Cl。
(2) The modified silicone oil A2, dimethyl silicone oil B2 and copolymer C2 with terminal hydroxyl groups derived from polyhydroxy compounds are stirred and mixed for 2 hours at the temperature of 60 ℃ according to different proportions (shown in Table 2) to obtain the surfactant.
The dimethyl silicone oil B2 has a structural formula
The simethicone b3 and the simethicone b4, wherein the q of the simethicone b3 is 5, and the q of the simethicone b4 is 7. The mass ratio of the dimethyl silicone oil b3 to the dimethyl silicone oil b4 is 1: 1.
the copolymer C2 with terminal hydroxyl groups derived from a polyol is a polyether polyol with propylene glycol as initiator and has a molecular weight of 500.
Example 3
This example provides a surfactant prepared by the following procedure:
(1) synthesis of modified Silicone oil A3
122.58g of octamethylcyclotetrasiloxane, 29.37g of high hydrogen silicone oil and 28.06g of hexamethyldisiloxane are reacted at 85 ℃ for 5 hours under the action of acid clay to obtain the hydrogen silicone oil.
Adding 60g of the obtained hydrogen-containing silicone oil, 56.34g of allyl polyether and 6.11 g of allyl chloride into a reactor, heating to 90 ℃ under normal pressure under the conditions of 10ppm of chloroplatinic acid catalyst and 300ppm of triethanolamine cocatalyst, and reacting for 9 hours to obtain modified silicone oil A3, wherein the molecular formula is as follows: si (CH)3)3-O-[Si(CH3)2-O]9-[Si(CH3)R2-O]1.4-[Si(CH3)R3-O]1.1-Si(CH3)3Wherein R is2＝-CH2CH2CH2O(CH2CH2O)8(CH2CH(CH3)O)4CH3；R3＝-CH2C(CH3)CH2Cl。
(2) The modified silicone oil A3 was mixed with dimethicone B3 and copolymer C3 having terminal hydroxyl groups derived from a polyhydroxy compound at different ratios (as shown in Table 3) at 60 deg.C with stirring for 2h to obtain a surfactant.
The dimethyl silicone oil B3 has a structural formula
The simethicone b5 and the simethicone b6, wherein the q of the simethicone b5 is 5, and the q of the simethicone b6 is 6. The mass ratio of the dimethyl silicone oil b5 to the dimethyl silicone oil b6 is 1: 1.
the copolymer C1 with terminal hydroxyl groups derived from polyols was a polyether polyol with 1, 4-butanediol as initiator and a molecular weight of 500.
Example 4
This example provides a surfactant prepared by the following procedure:
(1) synthesis of modified Silicone oil A4
110.39g of octamethylcyclotetrasiloxane, 45.49g of high hydrogen silicone oil and 24.13g of hexamethyldisiloxane are reacted at 85 ℃ for 5 hours under the action of acid clay to obtain the hydrogen silicone oil.
60g of the above hydrogen-containing silicone oil, 83.36g of allyl polyether and 10.01 g of allyl chloride were charged into a reactor at 10ppm of chloroplatinic acid catalyst and 300ppm of allyl chlorideHeating to 90 ℃ under normal pressure under the condition of a triethanolamine cocatalyst, and reacting for 9 hours to obtain modified silicone oil A4, wherein the molecular formula is as follows: si (CH)3)3-O-[Si(CH3)2-O]9-[Si(CH3)R2-O]2.3-[Si(CH3)R3-O]2-Si(CH3)3Wherein R is2＝-CH2CH2CH2O(CH2CH2O)8(CH2CH(CH3)O)4CH3；R3＝-CH2C(CH3)CH2Cl。
(2) The modified silicone oil A4 was mixed with dimethicone B4 and copolymer C4 having terminal hydroxyl groups derived from a polyhydroxy compound at different ratios (as shown in Table 4) at 60 deg.C with stirring for 2h to obtain a surfactant.
The dimethyl silicone oil B4 has a structural formula
The simethicone b7, wherein the q of the simethicone b7 is 5.
The copolymer C1 with terminal hydroxyl groups derived from polyols was a polyether polyol with 1, 4-butanediol as initiator and a molecular weight of 500.
Test examples
The surfactant obtained in the above examples 1 to 4 is used for preparing polyurethane high resilience foam, specifically, the high resilience polyurethane foam is prepared by the reaction of an X component and a Y component, and the preparation method is as follows:
preparation of the X component material: the weighed polyols, catalysts, foaming agents and surfactants are mixed and stirred for 20s at normal temperature according to the formula amount in the table 1 in parts by weight.
TABLE 1 formulation
| Raw materials | Formulation of |
| ZSN-330 | 100 |
| The surfactant provided by the embodiment of the application | 2 |
| Methylene dichloride | 15 |
| Water (W) | 5 |
| Triethylene diamine | 0.4 |
| Stannous octoate | 0.4 |
The Y component material is toluene diisocyanate (TDI-80).
When in use, X, Y component materials are mixed according to the proportion of X: y is 100: 35, stirring for 5s under the stirring condition of 2000r/min, and pouring the mixture into a standard mould (the mould temperature is 25 ℃) on the premise of not freely foaming the foam, thus preparing the polyurethane high-resilience foam.
The thickness of cells in the obtained foams was compared, and the results are shown in tables 2 to 5.
TABLE 2 compounding ratios and results
Note: in the table, cell size is represented by "+", and increasing "+" indicates that the cells are coarser, as follows.
TABLE 3 compounding ratios and results
TABLE 4 compounding ratios and results
TABLE 5 compounding ratios and results
It can be seen from tables 2 to 5 that, on the basis of a single polyether modified silicone oil, allyl chloride derivatives with different structures are introduced to obtain co-modified silicone oil, the co-modified silicone oil and dimethyl silicone oil are prepared in different proportions, the effective regulation and control range of the porosity and the foam stability of the polyurethane high resilience foam is increased, and when the proportion of the component B is fixed, the effective regulation of the foam pore size to a greater extent can be realized by regulating the proportion of the component A, so that a research basis is provided for effectively regulating and controlling the size stability of the high resilience polyurethane foam.
In conclusion, the surfactant contains the modified silicone oil with the specific structural formula provided by the application, so that the strength of the polyurethane foam is improved, and the opening property and the stability of the polyurethane high-resilience foam are adjusted. The preparation method of the surfactant is simple and easy to operate. The surfactant is used for preparing polyurethane foam, and the product performance of the polyurethane foam can be effectively improved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (25)
1. The modified silicone oil is characterized in that the structural formula of the modified silicone oil is
Wherein m has a value of 1-20, n has a value of 1-15, p has a value of 1-15, and m + n + p has a value of 3-20, R1Is R2Or R3；
Wherein R is2Has the structure simple formula of-CH2CH2CH2O(CH2CH2O)a(CH2CH(CH3)O)bR4A has a value of 1-10, b has a value of 0-10, and a + b has a value of 1-15, R4Is an alkyl group having 1 to 4 carbon atoms;
R3has the structure simple formula of-CH2CH(R7)CH2Cl, wherein R7Selected from ester group, nitrile group, ketone group, aldehyde group, sulfone group or hydrogen atom.
2. Modified silicone oil according to claim 1, wherein R is7Is selected from-CO2Me、-CO2Et、-CO2n-Bu、-CN、-COCH3or-H.
3. The method for preparing modified silicone oil according to claim 1 or 2, comprising the steps of: reacting hydrogen-containing silicone oil with allyl polyether, an allyl chloride derivative, a first catalyst and a cocatalyst, wherein the hydrogen-containing silicone oil is obtained by reacting octamethylcyclotetrasiloxane, high hydrogen-containing silicone oil and hexamethyldisiloxane or reacting octamethylcyclotetrasiloxane, high hydrogen-containing silicone oil and 1,1,3, 3-tetramethyldisiloxane under the action of a second catalyst.
4. The preparation method according to claim 3, wherein the reaction temperature for preparing the hydrogen-containing silicone oil is 30-90 ℃, and the reaction time is 5-8 h;
the reaction temperature for preparing the modified silicone oil is 70-150 ℃, and the reaction time is 2-10 h.
5. The method according to claim 4, wherein the second catalyst is an acidic catalyst.
6. The method of claim 5, wherein the acidic catalyst comprises at least one of acid clay, sulfuric acid, trifluoromethanesulfonic acid, and an acid resin.
7. The method according to claim 6, wherein the acid catalyst is acid clay.
8. The production method according to claim 5, wherein the acidic catalyst accounts for 3 to 6 wt% of the total mass of the raw material for producing the hydrogen-containing silicone oil.
9. The method of claim 3, wherein the first catalyst is a platinum-containing catalyst.
10. The production method according to claim 9, wherein the first catalyst is a chloroplatinic acid catalyst.
11. The production method according to claim 9, wherein the first catalyst accounts for 3 to 20ppm of the total amount of raw materials for producing the modified silicone oil.
12. The method of claim 3, wherein the co-catalyst comprises at least one of acetamide, diethanolamine, N-butylethanolamine, triethanolamine, and triethylamine.
13. The production method according to claim 3, wherein the co-catalyst is in the range of 50 to 2000ppm based on the total amount of raw materials for producing the modified silicone oil.
14. The use of a modified silicone oil according to claim 1 or 2, wherein the modified silicone oil is used for the preparation of a surfactant.
15. A surfactant comprising the modified silicone oil according to claim 1 or 2.
16. The surfactant according to claim 15, wherein the modified silicone oil is present in the surfactant in an amount of 5 to 30% by weight.
17. The surfactant of claim 15 further comprising a surfactant of the formula
Wherein q is 5 to 10.
18. The surfactant of claim 17, wherein the dimethicone comprises 1-10% by weight of the surfactant.
19. The surfactant of claim 17 further comprising a copolymer having terminal hydroxyl groups derived from a polyol, wherein the polyol comprises a low molecular weight polyol.
20. The surfactant of claim 19, wherein said low molecular weight polyol comprises ethylene glycol, 1, 2-propylene glycol, 1, 3-butylene glycol, 1, 4-butylene glycol, 1, 6-hexanediol, neopentyl glycol, diethylene glycol, dipropylene glycol, or glycerol.
21. The surfactant as set forth in claim 19, wherein the molecular weight of said copolymer is 300-3000.
22. The surfactant of claim 19, wherein the weight percentage of said copolymer in said surfactant is from 60% to 90%.
23. A process for the preparation of a surfactant as claimed in any of claims 15 to 22 comprising the steps of: and preparing the surfactant from the modified silicone oil.
24. The method according to claim 23, wherein when the raw material of the surfactant further contains a dimethylsilicone oil and a copolymer having terminal hydroxyl groups derived from a polyhydric compound, the modified silicone oil, the dimethylsilicone oil and the copolymer having terminal hydroxyl groups derived from a polyhydric compound are mixed.
25. A polyurethane foam, characterized in that a surfactant according to any one of claims 15-22 is added during the preparation of the polyurethane foam.
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