CN115594976B

CN115594976B - Foam regulator, polyurethane foam, application and preparation method of polyurethane foam

Info

Publication number: CN115594976B
Application number: CN202211233839.0A
Authority: CN
Inventors: 万齐华; 吴斌; 朱佳伟; 张浩明
Original assignee: Aosjia New Material Technology Research Jiangsu Co ltd
Current assignee: Aosjia New Material Technology Research Jiangsu Co ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2024-02-06
Anticipated expiration: 2042-10-10
Also published as: CN115594976A

Abstract

The invention provides a cell regulator, which comprises 5-25% of polyether modified organic silicon surfactant, wherein the mass content of the cell regulator is 100%; 15-35% of dimethyl silicone oil; 1-25% of an emulsifier; 1-10% of wax; 40-55% of inorganic powder; wherein the emulsifier comprises one or more of fatty acid polyoxyethylene ester, fatty alcohol polyoxyethylene ether, alkylaryl sulfonate and ester compounds; the wax comprises one or more of polyethylene wax, polypropylene wax, polytetrafluoroethylene wax, fischer-Tropsch wax, polyamide wax, and carnauba wax. The foam regulator provided by the invention can be used for preparing polyurethane foam with a coarse foam structure, and the prepared polyurethane foam has better density uniformity, supporting performance, air permeability and elasticity.

Description

Foam regulator, polyurethane foam, application and preparation method of polyurethane foam

Technical Field

The invention relates to a cell regulator, polyurethane foam plastic and a preparation method thereof.

Background

The polyurethane foam is a high molecular polymer which is prepared by mixing and foaming isocyanate and polyether as main raw materials through special equipment under the action of a foaming agent, a catalyst and other auxiliary agents. Flexible polyurethane foam is an especially important one of polyurethane materials, has good rebound performance and bearing capacity, and is widely used as a material for furniture, sound insulation, filtration, lining and the like. Flexible polyurethane foam is generally classified into general polyurethane flexible foam, high resilience foam and slow resilience foam, and the high resilience foam has high resilience performance and explosive force and is widely used for car cushions, sofas, mattresses and the like.

Compared with common high-resilience foam, the coarse-pore high-resilience foam has a stronger skeleton and better supporting performance. Although the coarse-pore cell structure can be obtained to a certain extent by reducing the gas injection amount or the speed or the silicon oil consumption on the basis of the original preparation of the high-resilience foam, the coarse-pore high-resilience foam prepared by the method has poor stability, and the most visual performance is that the density uniformity is poor, and the quality cannot meet the actual requirements. Patent CN105121526B discloses a polyurethane foam with a coarsened cell structure, which coarsens the cell structure of the foam by using certain waxes as additives. However, when this process is repeated, it has been found that the direct addition of wax to the system can cause the foam to collapse until the foam collapses, affecting the stability and quality of the polyurethane foam, and requiring a suitable emulsifier for emulsification.

Disclosure of Invention

The invention aims to provide a foam regulator which can coarsen the structure of polyurethane foam, and the prepared polyurethane foam has good stability and good supporting performance.

It is another object of the present invention to provide a polyurethane foam having better density uniformity, support properties, air permeability and resiliency.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the invention provides a cell regulator, which comprises the following components in percentage by mass as 100 percent: 5-25% of polyether modified organosilicon surfactant; 15-35% of dimethyl silicone oil; 1-25% of emulsifying agent; 1-10% of wax; 40-55% of inorganic powder; wherein the emulsifier comprises one or more of fatty acid polyoxyethylene ester, fatty alcohol polyoxyethylene ether, alkylaryl sulfonate and ester compounds; the wax comprises one or more of polyethylene wax, polypropylene wax, polytetrafluoroethylene wax, fischer-Tropsch wax, polyamide wax, and carnauba wax.

Preferably, the wax has a melting point of 30 to 160 ℃.

Further preferably, the wax has a melting point of 90 to 160 ℃.

Preferably, the emulsifier is selected from one or more of polyoxyethylene monostearate, peregal O-10, peregal O-15, peregal O-20, peregal O-25, polyoxyethylene lauryl ether, polyoxyethylene monolaurate, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitol lanolin, polyoxyethylene propylene stearate, polyoxyethylene cetyl ether, polyethylene glycol monopalmitate, oleyl polyoxyethylene ether, stearyl polyoxyethylene ether, polyoxyethylene vegetable oil, polyoxyethylene castor oil, triethanolamine oleate, alkylaryl sulfonate, polyoxyethylene monopalmitate, hexaethylene glycol monolaurate, sorbitan laurate, sorbitan monopalmitate, methyl glucoside sesquistearate, sorbitan monooleate, hydroxylated lanolin, sorbitan sesquioleate, propylene glycol fatty acid ester, sorbitan tristearate, sorbitan trioleate.

According to some preferred embodiments, the cell regulator comprises, based on 100% by mass of the cell regulator: 15-25% of polyether modified organosilicon surfactant; 20-30% of dimethyl silicone oil; 1-10% of emulsifying agent; 1-5% of wax; 45-50% of inorganic powder.

Preferably, the polyether modified silicone surfactant has the general formula: (MD) _a E _b M) is selected from the group consisting of; wherein M is selected from (CH) ₃ ) ₃ SiO _1/2 Or (CH) ₃ ) ₃ RSiO _1/2 The method comprises the steps of carrying out a first treatment on the surface of the D is (CH) ₃ ) ₃ SiO _2/2 The method comprises the steps of carrying out a first treatment on the surface of the E is (CH) ₃ ) ₃ RSiO _2/2 The method comprises the steps of carrying out a first treatment on the surface of the a+b is a number between 1 and 10, and b is more than or equal to 1; r is polyether, and the number average molecular weight of the polyether is 300-4000.

Further preferably, the ratio of a to b is (1 to 9): 1.

Preferably, the polyether has the formula-C _n H _2n (C ₂ H ₄ O) _x (C ₃ H ₆ O) _y OT, wherein n is an integer between 2 and 4; x+y is a number between 1 and 10, and x is more than or equal to 0; t is an alkyl group having 1 to 4 carbon atoms.

Further preferably, the ratio of x to y is (0 to 9): 12.

Preferably, the kinematic viscosity of the simethicone is 10-1200 mm ² /s。

Preferably, the inorganic powder comprises one or more of calcium carbonate, barium sulfate, diatomite, zirconium silicate, titanium pigment, zirconium oxide, aluminum oxide, graphene oxide, magnesium nitride and nano powder bismuth sulfide, and the particle size of the inorganic powder is between 0.001 and 100 microns.

A second aspect of the present invention provides a process for producing the cell regulator as described above, the process comprising the steps of: (1) Adding polyether modified organosilicon surfactant, emulsifier and dimethyl silicone oil into a reactor, replacing air in the reactor by nitrogen, maintaining normal pressure of the system, and uniformly stirring to form turbid emulsion; (2) Heating the turbid emulsion to 50-160 ℃, respectively adding wax and inorganic powder, and stirring to obtain the foam regulator.

Preferably, the step (2) includes heating the turbid emulsion to 80-100 ℃, adding the wax until the wax is melted, adding the inorganic powder, and stirring for 0.5-2 h.

In a third aspect the present invention provides the use of a cell regulator as described above for the preparation of a polyurethane foam.

Preferably, the polyurethane foam comprises a polyurethane high resilience foam, a polyurethane slow resilience foam, a rigid foam, a semi-rigid foam, a microcellular foam, or a specialty polyurethane foam.

Preferably, polyether is used for diluting the foam cell regulator, and then the diluted foam cell regulator and raw materials including polyol and isocyanate are put into a stirring kettle for stirring, and then foaming is carried out to prepare polyurethane foam; wherein the cell regulator is added in an amount of 0.01 to 0.1 part by mass based on 100 parts by mass of the polyol.

Further preferably, the cell regulator has a charging mass of 0.03 to 0.05 parts.

Preferably, the stirring temperature is 20-30 ℃, the stirring speed is 1500-2500 rpm/min, and the stirring time is 3-10 s.

In a fourth aspect the present invention provides a polyurethane foam comprising a polyol, an isocyanate, a catalyst and a cell regulator as described above.

Preferably, the cell regulator and polyether are mixed according to 1: (15-25) diluting, wherein the diluted cell regulator is 0.2-1 part by mass per 100 parts by mass of the polyol.

Preferably, the raw materials for preparing the polyurethane foam further comprise water and silicone polyether; the catalyst comprises a triethylene diamine solution, a bis (dimethylaminoethyl) ether solution and stannous octoate.

According to some preferred embodiments, the silicone polyether is 0.1 to 2 parts by mass per 100 parts by mass of the polyol; 3-4 parts by mass of water; 0.1 to 0.2 part by mass of triethylene diamine solution; 0.01 to 0.05 part by mass of bis (dimethylaminoethyl) ether solution; 0.05 to 0.2 part by mass of stannous octoate; the feeding amount of the isocyanate is controlled so that the isocyanate index in the system is 100-110.

Preferably, the raw material of the polyurethane foam further includes calcium carbonate, and the calcium carbonate is 10 to 20 parts by mass with respect to 100 parts by mass of the polyol.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the foam regulator provided by the invention can be used for preparing polyurethane foam with a coarse foam structure, and the prepared polyurethane foam has better density uniformity, supporting performance, air permeability and elasticity.

Drawings

FIG. 1 is a polyurethane foam # 5 prepared in comparative example 2 of the present invention;

FIG. 2 is a polyurethane foam # 6 prepared in comparative example 2 of the present invention;

FIG. 3 is a 7# polyurethane foam produced in comparative example 2 of the present invention;

FIG. 4 is a polyurethane foam # 8 prepared in comparative example 2 of the present invention;

FIG. 5 is a 9# polyurethane foam produced in comparative example 2 of the present invention;

FIG. 6 is a polyurethane foam # 10 prepared in comparative example 2 of the present invention;

FIG. 7 is a polyurethane foam 11# produced in comparative example 2 of the present invention;

FIG. 8 is a polyurethane foam # 12 produced in comparative example 2 of the present invention.

Detailed Description

In the prior art, the scheme for preparing the coarse-cell polyurethane foam has the problems of poor stability, unsatisfactory performance and the like of the prepared polyurethane foam. The invention provides a foam regulator, which can obtain coarse-pore polyurethane foam by compounding polyether modified organosilicon, simethicone, emulsifying agent, wax and inorganic powder under the condition of adding only a small amount, and the prepared polyurethane foam has good stability and excellent performance. The scheme of the invention is further discussed below.

The invention provides a cell regulator, which comprises the following components in percentage by mass as 100 percent:

5-25% of polyether modified organosilicon surfactant;

15-35% of dimethyl silicone oil;

1-25% of emulsifying agent;

1-10% of wax;

40-55% of inorganic powder;

wherein the emulsifier comprises one or more of fatty acid polyoxyethylene ester, fatty alcohol polyoxyethylene ether, alkylaryl sulfonate and ester compounds;

the wax comprises one or more of polyethylene wax, polypropylene wax, polytetrafluoroethylene wax, fischer-Tropsch wax, polyamide wax, and carnauba wax.

According to the invention, the polyether modified silicone surfactant has the general formula: (MD) _a E _b M) is selected from the group consisting of; wherein M is selected from (CH) ₃ ) ₃ SiO _1/2 Or (CH) ₃ ) ₃ RSiO _1/2 The method comprises the steps of carrying out a first treatment on the surface of the D is (CH) ₃ ) ₃ SiO _2/2 The method comprises the steps of carrying out a first treatment on the surface of the E is (CH) ₃ ) ₃ RSiO _2/2 The method comprises the steps of carrying out a first treatment on the surface of the a+b is a number between 1 and 10, and b is more than or equal to 1; r is polyether, and the number average molecular weight of the polyether is 300-4000. Further, the polyether has the structural formula-C _n H _2n (C ₂ H ₄ O) _x (C ₃ H ₆ O) _y OT, wherein n is an integer between 2 and 4; x+y is a number between 1 and 10, and x is more than or equal to 0; t is an alkyl group having 1 to 4 carbon atoms.

According to the invention, the polyether modified organosilicon surfactant is prepared by using a non-hydrolytic Si-C copolymer to react Si-H polysiloxane with C=C double bond polyoxyethylene ether under the catalysis of chloroplatinic acid. The reaction equation is as follows:

specifically, the polyether modified silicone surfactant in the present invention can be prepared with reference to the prior art, for example, with reference to CN105199108A example 2.

The scheme of the invention has at least the following advantages:

(1) The foam regulator is used for preparing polyurethane foam, can improve the stability of the polyurethane foam, and ensures that the polyurethane foam has better supporting performance, air permeability and elasticity.

(2) The foam regulator is used for preparing polyurethane foam, the size and the number of the foam cells can be regulated according to the dosage of the foam regulator, and the process operation is simple.

(3) The production process and the formula of the polyurethane foam do not need to be greatly adjusted by using the foam cell regulator provided by the invention, and the coarse-cell polyurethane foam with excellent performance can be obtained by adding the foam cell regulator on the basis of the original production process and formula.

(4) The foam regulator can improve the shearing resistance of a polyurethane foam system, and can obtain a coarse pore structure without reducing the consumption of silicone oil.

The invention is further described below with reference to examples. The present invention is not limited to the following examples. The implementation conditions adopted in the embodiments can be further adjusted according to different requirements of specific use, and the implementation conditions which are not noted are conventional conditions in the industry. The technical features of the various embodiments of the present invention may be combined with each other as long as they do not collide with each other.

The polyether modified silicone surfactants of the following examples and comparative examples were, unless otherwise specified, available from Jiangsu Otsjia materials technologies Co., ltd, under the trademark UF-5361;

peregal O-10 was purchased from Seam petrochemical plant, jiangsu province under the trade name peregal O-10;

dimethicone is available from Dow Corning under the trademark PMX-200, 60 viscosity;

polyethylene wax is purchased from China Petroleum and Natural gas Co., ltd, and the brand is semi-refined paraffin wax 58;

polyether polyol 5603, trade name CHE-5603, available from Jiangsu changhua polyurethane technology limited;

polymer polyol 2045, CHP-2045, available from Jiangsu Changhua polyurethane Co., ltd;

the polyether siloxane is available from Jiangsu Otsjia materials technologies Co., ltd under the brand name UF-5840;

33% triethylenediamine solution (A-33) was purchased from Jiangsu Otsjia materials technologies Co., ltd;

70% bis (dimethylaminoethyl) ether solution (A-1) was purchased from Jiangsu Otsjia materials technologies Co., ltd;

stannous octoate (T-9) was purchased from Jiangsu austia materials technologies, inc.;

toluene Diisocyanate (TDI) was used to adjust the isocyanate index of the system in the following examples and comparative examples, wherein TDI was purchased from hounsman polyurethane limited, and the isocyanate index was calculated by:

isocyanate index = number of isocyanate equivalents/number of polyol equivalents = (W iso/E iso)/(W alcohol/E alcohol + W water/9)

W is the dosage of isocyanate;

w is the consumption of polyol;

e is isocyanate equivalent;

the E alcohol is a polyol equivalent.

Unless otherwise specified, "normal pressure" in the following examples and comparative examples means one atmosphere; "Normal temperature" means 25.+ -. 5 ℃ and "room temperature" means 25.+ -. 5 ℃.

Example 1

This example provides a cell regulator for flexible polyurethane foam, which comprises the following preparation steps:

firstly, 10g of polyether modified organic silicon surfactant, 20g of peregal O-10 and 20g of simethicone are put into a three-necked bottle, air in the three-necked bottle is replaced by nitrogen, the system is maintained at normal pressure, and the mixture is stirred uniformly at normal temperature to form turbid emulsion;

slowly heating the turbid emulsion in the three-necked bottle to 50-160 ℃, preferably 80-100 ℃, further preferably 98 ℃, slowly adding 5g of polyethylene wax into the emulsion until the emulsion is melted, adding 45g of titanium dioxide (with the particle size of 14 nm), stirring for 0.5-2 hours, preferably 0.5 hour, and cooling to room temperature to obtain the foam cell regulator.

Example 2

firstly, 20g of polyether modified organic silicon surfactant, 5g of peregal O-10 and 25g of simethicone are put into a three-necked bottle, air in the three-necked bottle is replaced by nitrogen, the system is maintained at normal pressure, and the mixture is stirred uniformly at normal temperature to form turbid emulsion;

slowly heating the turbid emulsion in the three-necked bottle to 50-160 ℃, preferably 80-100 ℃, further preferably 98 ℃, slowly adding 5g of polyethylene wax into the emulsion until the polyethylene wax is melted, adding 45g of titanium dioxide (with the particle size of 14 nm), stirring for 0.5-2 hours, preferably 0.5 hour, and cooling to room temperature to obtain the foam cell regulator.

Example 3

firstly, 20g of polyether modified organic silicon surfactant, 2g of peregal O-10 and 28g of simethicone are put into a three-necked bottle, air in the three-necked bottle is replaced by nitrogen, the system is maintained at normal pressure, and the mixture is stirred uniformly at normal temperature to form turbid emulsion;

slowly heating the turbid emulsion in the three-necked bottle to 50-160 ℃, preferably 80-100 ℃, slowly adding 1g of polyethylene wax into the emulsion until the emulsion is melted, adding 49g of titanium pigment (with the particle size of 14 nm), stirring for 0.5-2 hours, and cooling to room temperature to obtain the foam cell regulator.

Comparative example 1

The cell regulator in this comparative example was prepared in substantially the same manner as in example 1, except that: no polyethylene wax was added.

Comparative example 2

The cell regulator in this comparative example was prepared in substantially the same manner as in example 1, except that: no peregal O-10 was added.

Comparative example 3

The cell regulator in this comparative example was prepared in substantially the same manner as in example 1, except that: microcrystalline wax was used instead of polyethylene wax and sorbitan ester was used instead of peregal O-10.

Application example 1

The polyurethane foam was prepared by the following steps:

the materials were weighed into a stirred tank according to the following Table 1, stirred at 25℃for 5 seconds at a stirring speed of 2100rpm/min, poured into a foaming tank until the reaction was completed, and the foam-jumping time was recorded to obtain polyurethane foams of No. 1 to No. 4.

TABLE 1

The cell regulators after dilution in Table 1 above were obtained by diluting the cell regulators prepared in examples 1 to 3 with polyether polyol in a mass ratio of 1:19, respectively.

The density of the sample is tested according to the national standard GB/T6343-1995; the elongation and tear strength of the samples were tested according to the national standard for flexible polyurethane foam GB/T6344-1996; the rebound rate of the sample is tested according to the national standard GB/T6770-2008 of flexible polyurethane foam; testing the indentation hardness of the sample according to the national standard GB/T10807-2006B method of the soft polyurethane foam; the air permeability of the sample is tested according to the air permeability of GB/T10655-2003 high polymer porous elastic material; comfort factor = (65% indentation hardness/25% indentation hardness) ×100% and density uniformity Δρ is compared by testing the difference in density above and below the sponge, the greater the difference in density, the worse the density uniformity, and conversely the better the density uniformity, the results are shown in table 2.

TABLE 2

Test item	1#	2#	3#	4#
					Time per second of bubble jump	112	110	108	108
Density up/(kg/m) ³ )	27.84	27.11	27.34	27.60
					Density medium/(kg/m) ³ )	28.34	28.02	28.41	28.5
Density/(kg/m) ³ )	30.11	28.46	28.55	28.71
					△ρ	2.27	1.35	1.21	1.11
Rebound/%	30	31	32	32
					25% indentation hardness/N	82.02	90.58	91.88	92.61
40% indentation hardness/N	104.96	112.49	115.37	114.56
					65% indentation hardness/N	186.61	196.91	201.04	201.77
Air permeability (L/min)	78.22	100.93	118.44	124.50
					Comfort factor	2.27	2.17	2.19	2.18

Application example 2

The polyurethane foam was prepared by the following steps:

the materials were weighed in a stirred tank according to the following Table 3, stirred at 25℃for 5 seconds at a stirring speed of 2100rpm/min, poured into a foaming tank until the reaction was completed, and the foam-jumping time was recorded to obtain polyurethane foams of 5# to 12#, and polyurethane foam objects of 5# to 12#, see FIGS. 1 to 8.

TABLE 3 Table 3

The cell regulators diluted in the above Table 3 were obtained by diluting the cell regulators prepared in examples 1 to 3 and comparative examples 1 to 3 with polyether polyol in a mass ratio of 1:19, respectively.

The results of the performance tests of polyurethane foams # 5 to # 12 are shown in table 4 below.

TABLE 4 Table 4

As can be seen from table 4, as the addition amount of the cell regulator increases, the indentation hardness of the polyurethane foam gradually increases, and the comfort factor also tends to increase.

The proportion of coarse pores occurring in cells increases with an increase in the amount of the cell regulator added, but the applicant has unexpectedly found that when the amount of the cell regulator added after dilution exceeds 1 part, a collapse phenomenon occurs, the hardness of the product decreases, and the performance deteriorates.

The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. A cell regulator, characterized by: the cell regulator comprises, based on 100% by mass of the cell regulator:

5-25% of polyether modified organic silicon surfactant;

15-35% of dimethyl silicone oil;

1-25% of an emulsifier;

1-10% of wax;

40-55% of inorganic powder;

wherein the emulsifier comprises one or more of fatty acid polyoxyethylene ester, fatty alcohol polyoxyethylene ether and alkylaryl sulfonate;

2. The cell regulator of claim 1, wherein: the emulsifier is selected from one or more of polyoxyethylene monostearate, peregal O-10, peregal O-15, peregal O-20, peregal O-25, polyoxyethylene lauryl ether, polyoxyethylene monolaurate, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitol lanolin, polyoxyethylene propylene stearate, polyoxyethylene cetyl ether, polyethylene glycol monopalmitate, oleyl alcohol polyoxyethylene ether, stearyl alcohol polyoxyethylene ether, polyoxyethylene vegetable oil, polyoxyethylene castor oil, alkylaryl sulfonate and polyoxyethylene monopalmitate.

3. The cell regulator of claim 1, wherein: the cell regulator comprises, based on 100% by mass of the cell regulator:

15-25% of polyether modified organic silicon surfactant;

20-30% of dimethyl silicone oil;

1-10% of an emulsifier;

1-5% of wax;

45-50% of inorganic powder.

4. The cell regulator of claim 1, wherein: the polyether modified organosilicon surfactant has a general formula: (MD) _a E _b M) is selected from the group consisting of; wherein M is selected from (CH) ₃ ) ₃ SiO _1/2 Or (CH) ₃ ) ₃ RSiO _1/2 The method comprises the steps of carrying out a first treatment on the surface of the D is (CH) ₃ ) ₃ SiO _2/2 The method comprises the steps of carrying out a first treatment on the surface of the E is (CH) ₃ ) ₃ RSiO _2/2 The method comprises the steps of carrying out a first treatment on the surface of the a+b is a number between 1 and 10, and b is more than or equal to 1; r is polyether, and the number average molecular weight of the polyether is 300-4000.

5. The cell regulator of claim 4, wherein: the structural formula of the polyether is-C _n H _2n (C ₂ H ₄ O) _x (C ₃ H ₆ O) _y OT, wherein n is an integer between 2 and 4; x+y is a number between 1 and 10, and x is more than or equal to 0; t is an alkyl group having 1 to 4 carbon atoms.

6. The cell regulator of claim 1, wherein: the kinematic viscosity of the simethicone is 10-1200 mm ² S; and/or the number of the groups of groups,

the inorganic powder comprises one or more of calcium carbonate, barium sulfate, diatomite, zirconium silicate, titanium pigment, zirconium oxide, aluminum oxide, graphene oxide, magnesium nitride and nano powder bismuth sulfide, and the particle size of the inorganic powder is 0.001-100 microns.

7. A method of producing the cell regulator according to any one of claims 1 to 6, characterized in that: the preparation method comprises the following steps:

(1) Adding polyether modified organosilicon surfactant, emulsifier and dimethyl silicone oil into a reactor, replacing air in the reactor by nitrogen, maintaining normal pressure of the system, and uniformly stirring to form turbid emulsion;

(2) And heating the turbid emulsion to 50-160 ℃, respectively adding wax and inorganic powder, and stirring to obtain the foam regulator.

8. The method of producing a cell regulator according to claim 7, characterized in that: and (2) heating the turbid emulsion to 80-100 ℃, adding the wax until the turbid emulsion is melted, adding the inorganic powder, and stirring for 0.5-2 h.

9. Use of a cell regulator as defined in any one of claims 1 to 6 for the preparation of polyurethane foam.

10. The use of the cell regulator according to claim 9 for the preparation of polyurethane foam, characterized in that: the polyurethane foam comprises polyurethane high-resilience foam, polyurethane slow-resilience foam, rigid foam, semi-rigid foam, microcellular foam or special polyurethane foam.

11. The use of the cell regulator according to claim 9 for the preparation of polyurethane foam, characterized in that: diluting the foam cell regulator by using polyether, then putting the diluted foam cell regulator and raw materials including polyol and isocyanate into a stirring kettle for stirring, and then foaming to prepare polyurethane foam; and the feeding mass of the foam regulator is 0.01-0.1 part relative to 100 parts by mass of the polyol.

12. The use of the cell regulator according to claim 11 for the preparation of polyurethane foam, characterized in that: the stirring temperature is 20-30 ℃, the stirring speed is 1500-2500 rpm/min, and the stirring time is 3-10 s.

13. A polyurethane foam characterized by: the polyurethane foam comprising a polyol, an isocyanate, a catalyst, and a cell regulator as defined in any one of claims 1 to 6.

14. The polyurethane foam of claim 13, wherein: the cell regulator and polyether are mixed according to the following formula 1: (15-25) diluting, wherein the diluted cell regulator is 0.2-1 part by mass per 100 parts by mass of the polyol.

15. The polyurethane foam of claim 13, wherein: the raw materials for preparing the polyurethane foam also comprise water and siloxane polyether; the catalyst comprises a triethylene diamine solution, a bis (dimethylaminoethyl) ether solution and stannous octoate.

16. The polyurethane foam of claim 15, wherein: the silicone polyether is 0.1-2 parts by mass relative to 100 parts by mass of the polyol; 3-4 parts by mass of water; 0.1-0.2 part by mass of triethylene diamine solution; 0.01-0.05 parts by mass of bis (dimethylaminoethyl) ether solution; 0.05-0.2 parts by mass of stannous octoate; controlling the feeding amount of the isocyanate to enable the isocyanate index in the system to be 100-110; and/or the number of the groups of groups,

the raw materials of the polyurethane foam further comprise calcium carbonate, wherein the calcium carbonate is 10-20 parts by mass relative to 100 parts by mass of the polyol.