CN115926435A - Expansion type waterborne polyurethane elastomer and preparation method thereof - Google Patents
Expansion type waterborne polyurethane elastomer and preparation method thereof Download PDFInfo
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- CN115926435A CN115926435A CN202310084604.8A CN202310084604A CN115926435A CN 115926435 A CN115926435 A CN 115926435A CN 202310084604 A CN202310084604 A CN 202310084604A CN 115926435 A CN115926435 A CN 115926435A
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- 229920003225 polyurethane elastomer Polymers 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 75
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 57
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003063 flame retardant Substances 0.000 claims abstract description 40
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 29
- 229920001971 elastomer Polymers 0.000 claims abstract description 29
- 239000005060 rubber Substances 0.000 claims abstract description 28
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 21
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 229920000877 Melamine resin Polymers 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 18
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 18
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 18
- 239000002518 antifoaming agent Substances 0.000 claims description 18
- 239000006229 carbon black Substances 0.000 claims description 18
- 239000002270 dispersing agent Substances 0.000 claims description 18
- 229910021389 graphene Inorganic materials 0.000 claims description 18
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 18
- 229940059574 pentaerithrityl Drugs 0.000 claims description 18
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 18
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 18
- 229920002545 silicone oil Polymers 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 12
- 238000007873 sieving Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 229920005549 butyl rubber Polymers 0.000 claims description 4
- 229920003049 isoprene rubber Polymers 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 229920005558 epichlorohydrin rubber Polymers 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 229920002857 polybutadiene Polymers 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 3
- 239000004814 polyurethane Substances 0.000 description 8
- 229920002635 polyurethane Polymers 0.000 description 7
- 239000002131 composite material Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an intumescent waterborne polyurethane elastomer and a preparation method thereof, and the intumescent waterborne polyurethane elastomer comprises the following raw materials in parts by mass: 30-50 parts of waterborne polyurethane resin, 15-30 parts of flame retardant, 10-20 parts of elastic rubber powder, 5-10 parts of wear-resistant agent, 3-8 parts of auxiliary agent and 5-10 parts of zinc oxide powder. The waterborne polyurethane elastomer is prepared by selecting the waterborne polyurethane resin, the flame retardant, the elastic rubber powder, the wear-resisting agent, the auxiliary agent and the zinc oxide powder, so that the waterborne polyurethane elastomer is endowed with excellent flame retardance and high-temperature aging resistance, and the wear resistance of the waterborne polyurethane elastomer is improved.
Description
Technical Field
The invention relates to the technical field of waterborne polyurethane elastomers, in particular to an intumescent waterborne polyurethane elastomer and a preparation method thereof.
Background
Polyurethane is a polymer with a main chain containing-NHCOO-repeating structural units, and the English abbreviation PU comprises various forms of rigid polyurethane plastics, flexible polyurethane plastics, polyurethane elastomers and the like, and is divided into two main types of thermoplasticity and thermosetting property. The raw materials are generally presented in a resin state; because the polyurethane contains strong polar carbamate group, the polyurethane is insoluble in nonpolar group, and has good oil resistance, toughness, wear resistance, aging resistance and adhesiveness; the material suitable for a wider temperature range (-50-150 ℃) can be prepared by using different raw materials, and is very suitable for elastomers.
In some fields, the mechanical properties of polyurethane, especially aqueous polyurethane, need to be used, but in flammable use environments, the flame retardant property of the aqueous polyurethane elastomer needs to be further improved.
Disclosure of Invention
The invention aims to provide an intumescent waterborne polyurethane elastomer and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an intumescent waterborne polyurethane elastomer comprises the following raw materials in parts by mass: 30-50 parts of waterborne polyurethane resin, 15-30 parts of flame retardant, 10-20 parts of elastic rubber powder, 5-10 parts of wear-resisting agent, 3-8 parts of auxiliary agent and 5-10 parts of zinc oxide powder.
Preferably, the feed comprises the following raw materials in parts by mass: 35-45 parts of waterborne polyurethane resin, 20-25 parts of flame retardant, 12-16 parts of elastic rubber powder, 6-8 parts of wear-resistant agent, 4-7 parts of assistant and 4-7 parts of zinc oxide powder.
Preferably, the feed comprises the following raw materials in parts by mass: 40 parts of waterborne polyurethane resin, 23 parts of flame retardant, 15 parts of elastic rubber powder, 7 parts of wear-resisting agent, 5 parts of auxiliary agent and 5 parts of zinc oxide powder.
Preferably, the flame retardant comprises: ammonium polyphosphate, monopentaerythritol, melamine, and graphene oxide; ammonium polyphosphate: mono-pentaerythritol: melamine: the proportionality coefficient among the graphene oxides is 5-8.
Preferably, the elastomeric gum powder is selected from: one or more of isoprene rubber powder, polybutadiene rubber powder, butadiene styrene rubber powder, nitrile rubber powder, chloroprene rubber powder, butyl rubber powder, ethylene propylene diene monomer rubber powder, epichlorohydrin rubber powder and polyacrylate rubber powder.
Preferably, the anti-wear agent comprises: polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black; the proportionality coefficient among polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black is 5:5:1:1.
preferably, the auxiliaries include: leveling agent, defoaming agent and dispersing agent; the proportion coefficient among the leveling agent, the defoaming agent and the dispersing agent is 1-2.
Preferably, the preparation method of the anti-wear agent comprises the following steps: firstly, pouring polyolefin elastomer, silicone oil, white carbon black and titanium nitride powder into an internal mixer, banburying at 100-150 ℃ for 5-10 minutes, heating to 130-140 ℃ for banburying for 2-5 minutes, then discharging, and then, open mixing to obtain the wear-resisting agent.
A preparation method of an intumescent waterborne polyurethane elastomer comprises the following steps:
s1, preparing an auxiliary agent: and adding the flatting agent, the defoaming agent and the dispersing agent together in proportion, and then uniformly stirring.
S2, preparing a flame retardant: mixing ammonium polyphosphate, monopentaerythritol, melamine and graphene oxide together according to a ratio, mixing by using ultrasonic vibration equipment, then uniformly dispersing to form emulsion, and then fully stirring and mixing by using a stirring machine; and sieving the mixed materials, and obtaining the flame retardant after sieving and discharging.
S3, adding an auxiliary agent, a wear-resisting agent and zinc oxide powder into the waterborne polyurethane resin, and uniformly dispersing;
s4, adding a flame retardant, and uniformly stirring;
s5, adding elastic rubber powder, and uniformly stirring;
and S6, filtering and packaging.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the waterborne polyurethane elastomer is prepared by selecting the waterborne polyurethane resin, the flame retardant, the elastic rubber powder, the wear-resisting agent, the auxiliary agent and the zinc oxide powder, so that the waterborne polyurethane elastomer is endowed with excellent flame retardance and high-temperature aging resistance, and the wear resistance of the waterborne polyurethane elastomer is improved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The intumescent waterborne polyurethane elastomer comprises the following raw materials in parts by mass: 30-50 parts of waterborne polyurethane resin, 15-30 parts of flame retardant, 10-20 parts of elastic rubber powder, 5-10 parts of wear-resistant agent, 3-8 parts of auxiliary agent and 5-10 parts of zinc oxide powder.
The composite material comprises the following raw materials in parts by mass: 35-45 parts of waterborne polyurethane resin, 20-25 parts of flame retardant, 12-16 parts of elastic rubber powder, 6-8 parts of wear-resisting agent, 4-7 parts of assistant and 4-7 parts of zinc oxide powder.
The composite material comprises the following raw materials in parts by mass: 40 parts of waterborne polyurethane resin, 23 parts of flame retardant, 15 parts of elastic rubber powder, 7 parts of wear-resisting agent, 5 parts of auxiliary agent and 5 parts of zinc oxide powder.
The flame retardant comprises: ammonium polyphosphate, monopentaerythritol, melamine, and graphene oxide; ammonium polyphosphate: mono-pentaerythritol: melamine: the proportionality coefficient among the graphene oxides is 5-8.
The elastic rubber powder is selected from: one or more of isoprene rubber powder, polybutadiene rubber powder, butadiene styrene rubber powder, nitrile rubber powder, chloroprene rubber powder, butyl rubber powder, ethylene propylene diene monomer rubber powder, epichlorohydrin rubber powder and polyacrylate rubber powder.
The wear-resistant agent comprises: polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black; the proportionality coefficient among polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black is 5:5:1:1.
the auxiliary agent comprises: flatting agent, defoaming agent and dispersing agent; the proportion coefficient among the leveling agent, the defoaming agent and the dispersing agent is 1-2.
The preparation method of the wear-resisting agent comprises the following steps: firstly, pouring polyolefin elastomer, silicone oil, white carbon black and titanium nitride powder into an internal mixer, carrying out internal mixing for 5-10 minutes at 100-150 ℃, heating to 130-140 ℃, carrying out internal mixing for 2-5 minutes, then discharging, and carrying out open mixing to obtain the wear-resistant agent.
A preparation method of an intumescent waterborne polyurethane elastomer is characterized by comprising the following steps:
s1, preparing an auxiliary agent: and adding the flatting agent, the defoaming agent and the dispersing agent together in proportion, and then uniformly stirring.
S2, preparing a flame retardant: mixing ammonium polyphosphate, monopentaerythritol, melamine and graphene oxide together according to a ratio, mixing by using ultrasonic vibration equipment, then uniformly dispersing to form emulsion, and then fully stirring and mixing by using a stirring machine; and sieving the mixed materials, and obtaining the flame retardant after sieving and discharging.
S3, adding an auxiliary agent, a wear-resisting agent and zinc oxide powder into the waterborne polyurethane resin, and uniformly dispersing;
s4, adding a flame retardant, and uniformly stirring;
s5, adding elastic rubber powder, and uniformly stirring;
and S6, filtering and packaging.
Examples
The intumescent waterborne polyurethane elastomer comprises the following raw materials in parts by mass: 30 parts of waterborne polyurethane resin, 15 parts of flame retardant, 10 parts of elastic rubber powder, 5 parts of wear-resisting agent, 3 parts of auxiliary agent and 5 parts of zinc oxide powder.
The flame retardant comprises: ammonium polyphosphate, monopentaerythritol, melamine, and graphene oxide; ammonium polyphosphate: mono-pentaerythritol: melamine: the proportionality coefficient between graphene oxide is 5.5.
The elastic rubber powder is selected from: isoprene rubber powder.
The wear-resistant agent comprises: polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black; the proportionality coefficient among polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black is 5:5:1:1.
the auxiliary agent comprises: leveling agent, defoaming agent and dispersing agent; the ratio coefficient among the leveling agent, the defoaming agent and the dispersing agent is 1.
The preparation method of the wear-resisting agent comprises the following steps: firstly, pouring polyolefin elastomer, silicone oil, white carbon black and titanium nitride powder into an internal mixer, carrying out internal mixing for 5-10 minutes at 100-150 ℃, heating to 130-140 ℃, carrying out internal mixing for 2-5 minutes, then discharging, and carrying out open mixing to obtain the wear-resistant agent.
A preparation method of an intumescent waterborne polyurethane elastomer is characterized by comprising the following steps:
s1, preparing an auxiliary agent: and (2) adding the leveling agent, the defoaming agent and the dispersing agent together according to the ratio of 1.
S2, preparing a flame retardant: mixing ammonium polyphosphate, monopentaerythritol, melamine and graphene oxide together according to the proportion of 5.5; and sieving the mixed materials, and obtaining the flame retardant after sieving and discharging.
S3, adding an auxiliary agent, an anti-wear agent and zinc oxide powder into the waterborne polyurethane resin, and uniformly dispersing;
s4, adding a flame retardant, and uniformly stirring;
s5, adding elastic rubber powder, and uniformly stirring;
and S6, filtering and packaging.
Examples
The intumescent waterborne polyurethane elastomer comprises the following raw materials in parts by mass: 30-50 parts of waterborne polyurethane resin, 30 parts of flame retardant, 20 parts of elastic rubber powder, 10 parts of wear-resisting agent, 8 parts of auxiliary agent and 10 parts of zinc oxide powder.
The flame retardant comprises: ammonium polyphosphate, monopentaerythritol, melamine, and graphene oxide; ammonium polyphosphate: mono-pentaerythritol: melamine: the proportionality coefficient between graphene oxides is 8.
The elastic rubber powder is selected from: styrene butadiene rubber powder.
The wear-resistant agent comprises: polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black; the proportionality coefficient among polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black is 5:5:1:1.
the auxiliary agent comprises: leveling agent, defoaming agent and dispersing agent; the ratio coefficient among the leveling agent, the defoaming agent and the dispersing agent is 2.
The preparation method of the wear-resisting agent comprises the following steps: firstly, pouring polyolefin elastomer, silicone oil, white carbon black and titanium nitride powder into an internal mixer, carrying out internal mixing for 5-10 minutes at 100-150 ℃, heating to 130-140 ℃, carrying out internal mixing for 2-5 minutes, then discharging, and carrying out open mixing to obtain the wear-resistant agent.
A preparation method of an intumescent waterborne polyurethane elastomer is characterized by comprising the following steps:
s1, preparing an auxiliary agent: and (3) adding the leveling agent, the defoaming agent and the dispersing agent together according to the proportion 2.
S2, preparing a flame retardant: mixing ammonium polyphosphate, monopentaerythritol, melamine and graphene oxide together according to the proportion of 8; and sieving the mixed materials, and obtaining the flame retardant after sieving and discharging.
S3, adding an auxiliary agent, a wear-resisting agent and zinc oxide powder into the waterborne polyurethane resin, and uniformly dispersing;
s4, adding a flame retardant, and uniformly stirring;
s5, adding elastic rubber powder, and uniformly stirring;
and S6, filtering and packaging.
Examples
The intumescent waterborne polyurethane elastomer comprises the following raw materials in parts by mass:
the composite material comprises the following raw materials in parts by mass: 40 parts of waterborne polyurethane resin, 23 parts of flame retardant, 15 parts of elastic rubber powder, 7 parts of wear-resisting agent, 5 parts of auxiliary agent and 5 parts of zinc oxide powder.
The flame retardant comprises: ammonium polyphosphate, monopentaerythritol, melamine, and graphene oxide; ammonium polyphosphate: mono-pentaerythritol: melamine: the proportionality coefficient between graphene oxides is 6.
The elastic rubber powder is selected from: butyl rubber powder.
The wear-resistant agent comprises: polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black; the proportionality coefficient among polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black is 5:5:1:1.
the auxiliary agent comprises: flatting agent, defoaming agent and dispersing agent; the proportion coefficient among the leveling agent, the defoaming agent and the dispersing agent is 1.
The preparation method of the wear-resisting agent comprises the following steps: firstly, pouring polyolefin elastomer, silicone oil, white carbon black and titanium nitride powder into an internal mixer, carrying out internal mixing for 5-10 minutes at 100-150 ℃, heating to 130-140 ℃, carrying out internal mixing for 2-5 minutes, then discharging, and carrying out open mixing to obtain the wear-resistant agent.
A preparation method of an intumescent waterborne polyurethane elastomer is characterized by comprising the following steps:
s1, preparing an auxiliary agent: adding the leveling agent, the defoaming agent and the dispersing agent together according to the proportion of 1.
S2, preparing a flame retardant: mixing ammonium polyphosphate, monopentaerythritol, melamine and graphene oxide together according to the proportion of 6; and sieving the mixed materials, and obtaining the flame retardant after sieving and discharging.
S3, adding an auxiliary agent, a wear-resisting agent and zinc oxide powder into the waterborne polyurethane resin, and uniformly dispersing;
s4, adding a flame retardant and uniformly stirring;
s5, adding elastic rubber powder, and uniformly stirring;
and S6, filtering and packaging.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. An expansion type waterborne polyurethane elastomer is characterized by comprising the following raw materials in parts by mass: 30-50 parts of waterborne polyurethane resin, 15-30 parts of flame retardant, 10-20 parts of elastic rubber powder, 5-10 parts of wear-resisting agent, 3-8 parts of auxiliary agent and 5-10 parts of zinc oxide powder.
2. The intumescent aqueous polyurethane elastomer as claimed in claim 1, is characterized by comprising the following raw materials in parts by mass: 35-45 parts of waterborne polyurethane resin, 20-25 parts of flame retardant, 12-16 parts of elastic rubber powder, 6-8 parts of wear-resisting agent, 4-7 parts of assistant and 4-7 parts of zinc oxide powder.
3. The intumescent waterborne polyurethane elastomer as claimed in claim 2, is characterized by comprising the following raw materials in parts by mass: 40 parts of waterborne polyurethane resin, 23 parts of flame retardant, 15 parts of elastic rubber powder, 7 parts of wear-resisting agent, 5 parts of auxiliary agent and 5 parts of zinc oxide powder.
4. An intumescent aqueous polyurethane elastomer as claimed in claim 1, characterized in that the flame retardant comprises: ammonium polyphosphate, monopentaerythritol, melamine, and graphene oxide; ammonium polyphosphate: mono-pentaerythritol: melamine: the proportionality coefficient among the graphene oxides is 5-8.
5. An expanded aqueous polyurethane elastomer according to claim 1, characterised in that the elastomeric glue powder is selected from: one or more of isoprene rubber powder, polybutadiene rubber powder, butadiene styrene rubber powder, nitrile rubber powder, chloroprene rubber powder, butyl rubber powder, ethylene propylene diene monomer rubber powder, epichlorohydrin rubber powder and polyacrylate rubber powder.
6. An intumescent aqueous polyurethane elastomer, as claimed in claim 1, characterised in that said anti-wear agent comprises: polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black; the proportionality coefficient among polyolefin elastomer, silicone oil, titanium nitride powder and white carbon black is 5:5:1:1.
7. an expanded aqueous polyurethane elastomer according to claim 1, wherein the auxiliary agent comprises: leveling agent, defoaming agent and dispersing agent; the proportion coefficient among the leveling agent, the defoaming agent and the dispersing agent is 1-2.
8. An intumescent aqueous polyurethane elastomer as claimed in claim 6, characterized in that the anti-wear agent is prepared by the following steps: firstly, pouring polyolefin elastomer, silicone oil, white carbon black and titanium nitride powder into an internal mixer, carrying out internal mixing for 5-10 minutes at 100-150 ℃, heating to 130-140 ℃, carrying out internal mixing for 2-5 minutes, then discharging, and carrying out open mixing to obtain the wear-resistant agent.
9. A process for the preparation of an expanded aqueous polyurethane elastomer according to any one of claims 1 to 3, characterized in that it comprises the following steps:
s1, preparing an auxiliary agent: adding the flatting agent, the defoaming agent and the dispersing agent together in proportion, and then uniformly stirring;
s2, preparing a flame retardant: mixing ammonium polyphosphate, monopentaerythritol, melamine and graphene oxide together according to a ratio, mixing by using ultrasonic vibration equipment, then uniformly dispersing to form emulsion, and then fully stirring and mixing by using a stirring machine; sieving the mixed materials, and obtaining the flame retardant after sieving and discharging;
s3, adding an auxiliary agent, a wear-resisting agent and zinc oxide powder into the waterborne polyurethane resin, and uniformly dispersing;
s4, adding a flame retardant, and uniformly stirring;
s5, adding elastic rubber powder, and uniformly stirring;
and S6, filtering and packaging.
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