CN113480841A - High-elasticity corrosion-resistant polyurethane and alloy material compounded with same - Google Patents
High-elasticity corrosion-resistant polyurethane and alloy material compounded with same Download PDFInfo
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- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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Abstract
The invention belongs to the technical field of high polymer materials, and particularly relates to high-elasticity corrosion-resistant polyurethane and an alloy material compounded with the polyurethane. Aiming at the problems that the acid and alkali corrosion resistance of polyurethane is poor and the application range of the polyurethane is limited in the prior art, the invention provides high-elasticity corrosion-resistant polyurethane and an alloy material compounded with the polyurethane, wherein the polyurethane comprises a thermoplastic polyurethane elastomer, polyethylene, a styrene elastomer, an acid and alkali resistance auxiliary agent, a compatilizer, a filler, an antioxidant and nano titanium dioxide. According to the invention, the acid and alkali resistant auxiliary agent and the polyethylene are added into the thermoplastic polyurethane elastomer, so that the acid and alkali resistance of the thermoplastic polyurethane elastomer is improved, and the application range of the material is expanded.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to high-elasticity corrosion-resistant polyurethane and an alloy material compounded with the polyurethane.
Background
Polyurethane (PU) was first developed in the 30 s of the 20 th century by german scientists who polycondensed liquid isocyanates and liquid polyethers or glycol polyesters to form a new material with physical properties different from the polyolefin materials of the time, which the scientists named as polyurethane. Through the technical development of the last eighty years, the material is widely applied to the fields of home furnishing, buildings, daily necessities, traffic, household appliances and the like. However, the polyurethane in the prior art has poor acid and alkali corrosion resistance, and the application range of the polyurethane is limited.
For example, the chinese patent application discloses a multifunctional natural environment-friendly polyurethane polymer composite material [ application number: 201810992464.3], the patent application comprises the following raw materials in parts by weight: 10-100 parts of thermoplastic polyurethane and 5-90 parts of rubber.
The invention provides a multifunctional natural environment-friendly polyurethane polymer composite material, which realizes the multifunction of the material, reduces pollution and improves the environment-friendly effect, but still has the problems.
Disclosure of Invention
The invention aims to solve the problems and provides high-elasticity corrosion-resistant polyurethane with better acid-base corrosion resistance.
The invention also aims to solve the problems and provide an alloy material which has better acid-base corrosion resistance and is compounded with high-elasticity corrosion-resistant polyurethane.
In order to achieve the purpose, the invention adopts the following technical scheme:
the high-elasticity corrosion-resistant polyurethane comprises a thermoplastic polyurethane elastomer, polyethylene, a styrene elastomer, an acid-base-resistant auxiliary agent, a compatilizer, a filler, an antioxidant and nano titanium dioxide.
In the high-elasticity corrosion-resistant polyurethane, the high-elasticity corrosion-resistant polyurethane comprises, by mass, 60-80 parts of a thermoplastic polyurethane elastomer, 10-20 parts of polyethylene, 15-25 parts of a styrene elastomer, 3-8 parts of an acid-base-resistant auxiliary agent, 8-12 parts of a compatilizer, 20-40 parts of a filler, 0.1-1 part of an antioxidant and 5-10 parts of nano titanium dioxide.
In the high-elasticity corrosion-resistant polyurethane, the high-elasticity corrosion-resistant polyurethane comprises 70 parts by mass of a thermoplastic polyurethane elastomer, 15 parts by mass of polyethylene, 20 parts by mass of a styrene elastomer, 5 parts by mass of an acid and alkali resistant auxiliary agent, 10 parts by mass of a compatilizer, 30 parts by mass of a filler, 0.5 part by mass of an antioxidant and 8 parts by mass of nano titanium dioxide.
In the above high-elasticity corrosion-resistant polyurethane, the styrene-based elastomer is a styrene-butadiene block copolymer.
In the high-elasticity corrosion-resistant polyurethane, the acid-base resistant auxiliary agent comprises polysiloxane.
In the high-elasticity corrosion-resistant polyurethane, the acid-base resistant auxiliary agent is a mixture of nano silicon carbide and polysiloxane, and the mass ratio of the nano silicon carbide to the polysiloxane is 1: 2.
In the above-mentioned highly elastic corrosion-resistant polyurethane, the compatibilizer is one of maleic anhydride-grafted polypropylene, ethylene-octene copolymer, and maleic anhydride-grafted styrene-hydrogenated butadiene-styrene triblock copolymer.
In the high-elasticity corrosion-resistant polyurethane, the filler is talcum powder or silicon dioxide.
In the high-elasticity corrosion-resistant polyurethane, the antioxidant comprises a main antioxidant and an auxiliary antioxidant; the primary antioxidant comprises an antioxidant 1010 and/or an antioxidant 1076, and the secondary antioxidant comprises an antioxidant 168.
The alloy material comprises a framework layer made of aluminum magnesium alloy and a polyurethane layer covering the surface of the framework layer, wherein the polyurethane layer is made of the high-elasticity corrosion-resistant polyurethane.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the acid and alkali resistant auxiliary agent and the polyethylene are added into the thermoplastic polyurethane elastomer, so that the acid and alkali resistance of the thermoplastic polyurethane elastomer is improved, and the application range of the material is expanded.
2. The invention also adds styrene elastomer, which can improve the whole elasticity of the material, and the polyurethane layer coated outside the framework layer has better buffer capacity.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
in the figure: skeleton layer 1, polyurethane layer 2.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
The embodiment provides high-elasticity corrosion-resistant polyurethane which comprises, by mass, 80 parts of a thermoplastic polyurethane elastomer (TPU), 10 parts of polyethylene, 15 parts of a styrene elastomer, 3 parts of an acid-base-resistant auxiliary agent, 8 parts of a compatilizer, 20 parts of a filler, 0.1 part of an antioxidant and 5 parts of nano titanium dioxide.
Wherein the styrene elastomer is a styrene-butadiene block copolymer, the acid-base resistant auxiliary agent is polysiloxane, the compatilizer is maleic anhydride grafted polypropylene, the filler is talcum powder, and the antioxidant is antioxidant 1010 and antioxidant 168 with the mass ratio of 1: 1.
According to the invention, the acid and alkali resistant auxiliary agent and the polyethylene are added into the thermoplastic polyurethane elastomer, so that the acid and alkali resistance of the thermoplastic polyurethane elastomer is improved, and the application range of the material is expanded.
The antioxidant 1010 is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester (CAS: 6683-19-8), and can effectively prevent the polymer material from thermal oxidative degradation in the long-term use process.
The antioxidant 168 is tris [2, 4-di-tert-butylphenyl ] phosphite (CAS: 31570-04-4), which can effectively prevent the thermal degradation of the material in the basic injection molding process and provide the polymer with long-term protection.
Example 2
The embodiment provides high-elasticity corrosion-resistant polyurethane which comprises, by mass, 60 parts of a thermoplastic polyurethane elastomer, 20 parts of polyethylene, 25 parts of a styrene elastomer, 8 parts of an acid-base-resistant auxiliary agent, 12 parts of a compatilizer, 40 parts of a filler, 1 part of an antioxidant and 10 parts of nano titanium dioxide.
Wherein the styrene elastomer is a styrene-butadiene block copolymer, the acid-base resistant auxiliary agent is polysiloxane, the compatilizer is maleic anhydride grafted polypropylene, the filler is talcum powder, and the antioxidant is antioxidant 1010 and antioxidant 168 with the mass ratio of 1: 1.
Example 3
The embodiment provides high-elasticity corrosion-resistant polyurethane which comprises, by mass, 70 parts of a thermoplastic polyurethane elastomer, 15 parts of polyethylene, 20 parts of a styrene elastomer, 5 parts of an acid-base-resistant auxiliary agent, 10 parts of a compatilizer, 30 parts of a filler, 0.5 part of an antioxidant and 8 parts of nano titanium dioxide.
Wherein the styrene elastomer is a styrene-butadiene block copolymer, the acid-base resistant auxiliary agent is polysiloxane, the compatilizer is an ethylene-octene copolymer, the filler is silicon dioxide, and the antioxidant is antioxidant 1076 and antioxidant 168 with the mass ratio of 1: 1.
The antioxidant 1076 is n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (CAS: 2082-79-3), and can effectively inhibit thermal degradation and oxidative degradation of the polymer.
Example 4
The embodiment provides high-elasticity corrosion-resistant polyurethane which comprises, by mass, 70 parts of a thermoplastic polyurethane elastomer, 15 parts of polyethylene, 20 parts of a styrene elastomer, 5 parts of an acid-base-resistant auxiliary agent, 10 parts of a compatilizer, 30 parts of a filler, 0.5 part of an antioxidant and 8 parts of nano titanium dioxide.
The styrene-based elastomer is a styrene-butadiene block copolymer, the acid-base resistant auxiliary agent is a mixture of nano silicon carbide and polysiloxane, the mass ratio of the nano silicon carbide to the polysiloxane is 1:2, the compatilizer is an ethylene-octene copolymer, the filler is silicon dioxide, and the antioxidant is antioxidant 1076 and antioxidant 168, wherein the mass ratio of the antioxidant is 1: 1.
Example 5
The embodiment provides high-elasticity corrosion-resistant polyurethane which comprises, by mass, 70 parts of a thermoplastic polyurethane elastomer, 15 parts of polyethylene, 20 parts of a styrene elastomer, 5 parts of an acid-base-resistant auxiliary agent, 10 parts of a compatilizer, 30 parts of a filler, 0.5 part of an antioxidant and 8 parts of nano titanium dioxide.
The styrene elastomer is a styrene-butadiene block copolymer, the acid-base resistant auxiliary agent is a mixture of nano silicon carbide and polysiloxane, the mass ratio of the nano silicon carbide to the polysiloxane is 1:3, the compatilizer is a maleic anhydride grafted styrene-hydrogenated butadiene-styrene triblock copolymer, the filler is talcum powder, and the antioxidant is antioxidant 1010 and antioxidant 168, wherein the mass ratio of the antioxidant is 1: 1.
Example 6
This example provides an alloy material, as shown in fig. 1, comprising a skeleton layer 1 made of an aluminum magnesium alloy and a polyurethane layer 2 covering the surface of the skeleton layer 1, wherein the polyurethane layer 2 is made of the highly elastic corrosion-resistant polyurethane described in any one of examples 1 to 5.
The framework layer 1 of the alloy material provided by the invention is made of aluminum magnesium alloy, so that the material is lightened while the mechanical strength is ensured, and the polystyrene elastomer is added into the polyurethane in the prepared polyurethane layer 2, so that the overall elasticity of the polyurethane material can be improved, and the polyurethane layer 2 coated outside the framework layer 1 has better buffer capacity.
Comparative example 1
The comparative example provides polyurethane which comprises, by mass, 70 parts of a thermoplastic polyurethane elastomer, 20 parts of a styrene elastomer, 5 parts of an acid and alkali resistant additive, 10 parts of a compatilizer, 30 parts of a filler, 0.5 part of an antioxidant and 8 parts of nano titanium dioxide.
The styrene-based elastomer is a styrene-butadiene block copolymer, the acid-base resistant auxiliary agent is a mixture of nano silicon carbide and polysiloxane, the mass ratio of the nano silicon carbide to the polysiloxane is 1:2, the compatilizer is an ethylene-octene copolymer, the filler is silicon dioxide, and the antioxidant is antioxidant 1076 and antioxidant 168, wherein the mass ratio of the antioxidant is 1: 1.
Comparative example 2
The comparative example provides polyurethane which comprises, by mass, 70 parts of a thermoplastic polyurethane elastomer, 15 parts of polyethylene, 20 parts of a styrene elastomer, 10 parts of a compatilizer, 30 parts of a filler, 0.5 part of an antioxidant and 8 parts of nano titanium dioxide.
Wherein the styrene elastomer is a styrene-butadiene block copolymer, the compatilizer is an ethylene-octene copolymer, the filler is silicon dioxide, and the antioxidant is antioxidant 1076 and antioxidant 168 with the mass ratio of 1: 1.
Comparative example 3
The comparative example provides polyurethane which comprises, by mass, 70 parts of a thermoplastic polyurethane elastomer, 15 parts of polyethylene, 5 parts of an acid and alkali resistant additive, 10 parts of a compatilizer, 30 parts of a filler, 0.5 part of an antioxidant and 8 parts of nano titanium dioxide.
The acid and alkali resistant auxiliary agent is a mixture of nano silicon carbide and polysiloxane, the mass ratio of the nano silicon carbide to the polysiloxane is 1:2, the compatilizer is an ethylene-octene copolymer, the filler is silicon dioxide, and the antioxidant comprises an antioxidant 1076 and an antioxidant 168, the mass ratio of the antioxidant is 1: 1.
Application example 1
the materials 1, 2, 1 and 2 were immersed in 1mol/L hydrochloric acid solution, and the shape of the material was observed every 10 days, with the results shown in the following table:
and (4) analyzing results: as can be seen from the experimental results in the table above, the polyurethane material provided by the invention has better acid corrosion resistance, so that the expected purpose of the invention is achieved.
Application example 2
The material 1, the material 2, the comparative material 1 and the comparative material 2 were immersed in 1mol/L sodium hydroxide solution, respectively, and the shape of the material was observed every 10 days, with the results shown in the following table:
and (4) analyzing results: the experimental results in the table show that the polyurethane material provided by the invention has better alkali corrosion resistance, so the expected purpose of the invention is achieved.
Application example 3
Comparative material 3 was prepared with the specific components described in comparative example 3;
the materials 1, 2 and 3 were cut into three parts having equal thickness and area, and the compressive stress of the cut materials 1, 2 and 3 after being compressed by half the thickness was measured by the method described in GB/T7757-2009 measurement of the compressive stress strain Properties of vulcanized rubber or thermoplastic rubber, respectively, and the experimental results were as follows:
and (4) analyzing results: the experimental results in the table show that the polyurethane material provided by the invention has better elasticity and can play a better buffering role, so that the expected purpose of the invention is achieved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A high-elasticity corrosion-resistant polyurethane is characterized in that: comprises thermoplastic polyurethane elastomer, polyethylene, styrene elastomer, acid and alkali resistant additive, compatilizer, filler, antioxidant and nano titanium dioxide.
2. The highly elastic, corrosion resistant polyurethane of claim 1, wherein: the high-elasticity corrosion-resistant polyurethane comprises, by mass, 60-80 parts of a thermoplastic polyurethane elastomer, 10-20 parts of polyethylene, 15-25 parts of a styrene elastomer, 3-8 parts of an acid-base resistant auxiliary agent, 8-12 parts of a compatilizer, 20-40 parts of a filler, 0.1-1 part of an antioxidant and 5-10 parts of nano titanium dioxide.
3. The highly elastic, corrosion resistant polyurethane of claim 2, wherein: the high-elasticity corrosion-resistant polyurethane comprises, by mass, 70 parts of a thermoplastic polyurethane elastomer, 15 parts of polyethylene, 20 parts of a styrene elastomer, 5 parts of an acid-base-resistant auxiliary agent, 10 parts of a compatilizer, 30 parts of a filler, 0.5 part of an antioxidant and 8 parts of nano titanium dioxide.
4. The highly elastic, corrosion resistant polyurethane of claim 1, wherein: the styrene elastomer is a styrene-butadiene block copolymer.
5. The highly elastic, corrosion resistant polyurethane of claim 1, wherein: the acid and alkali resistant auxiliary agent comprises polysiloxane.
6. The highly elastic, corrosion resistant polyurethane of claim 5, wherein: the acid and alkali resistant auxiliary agent is a mixture of nano silicon carbide and polysiloxane, and the mass ratio of the nano silicon carbide to the polysiloxane is 1: 2.
7. The highly elastic, corrosion resistant polyurethane of claim 1, wherein: the compatilizer is one of maleic anhydride grafted polypropylene, ethylene-octene copolymer and maleic anhydride grafted styrene-hydrogenated butadiene-styrene triblock copolymer.
8. The highly elastic, corrosion resistant polyurethane of claim 1, wherein: the filler is talcum powder or silicon dioxide.
9. The highly elastic, corrosion resistant polyurethane of claim 1, wherein: the antioxidant comprises a main antioxidant and an auxiliary antioxidant; the primary antioxidant comprises an antioxidant 1010 and/or an antioxidant 1076, and the secondary antioxidant comprises an antioxidant 168.
10. An alloy material, comprising a skeleton layer (1) made of aluminum magnesium alloy and a polyurethane layer (2) covering the surface of the skeleton layer (1), characterized in that: the polyurethane layer (2) is made of the highly elastic corrosion resistant polyurethane according to any of claims 1 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738275A (en) * | 2011-04-12 | 2012-10-17 | 苏州尚善新材料科技有限公司 | Solar cell assembly backplane and preparation method thereof |
| CN103483801A (en) * | 2013-09-27 | 2014-01-01 | 安徽科聚新材料有限公司 | Thermoplastic polyurethane composite material and preparation method thereof |
| CN106280391A (en) * | 2016-08-05 | 2017-01-04 | 锦州希尔达汽车零部件有限公司 | A kind of modified thermoplastic polyurethane elastomer and preparation method thereof |
| CN107227027A (en) * | 2017-07-20 | 2017-10-03 | 广东创弘材料科技有限公司 | Thermoplastic composite elastomer and preparation method thereof, purposes |
| JP2018115263A (en) * | 2017-01-18 | 2018-07-26 | 信越ポリマー株式会社 | Thermoplastic polyurethane elastomer composition |
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| FR2802849B1 (en) * | 1999-12-28 | 2002-03-01 | Trioplanex France | MICROPOROUS MULTILAYER FILM AND PROCESS FOR PRODUCING THE SAME |
| CN106008879A (en) * | 2016-06-23 | 2016-10-12 | 无锡市金五星针纺有限公司 | Polyurethane elastomer with high wear resistance and corrosion resistance and preparation method of polyurethane elastomer |
| CN107335099B (en) * | 2017-06-21 | 2020-08-07 | 北京化工大学 | Ultrasonic developing material and preparation method and application thereof |
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2020
- 2020-06-08 WO PCT/CN2020/094985 patent/WO2021243736A1/en active Application Filing
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- 2021-05-31 CN CN202110599379.2A patent/CN113480841A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738275A (en) * | 2011-04-12 | 2012-10-17 | 苏州尚善新材料科技有限公司 | Solar cell assembly backplane and preparation method thereof |
| CN103483801A (en) * | 2013-09-27 | 2014-01-01 | 安徽科聚新材料有限公司 | Thermoplastic polyurethane composite material and preparation method thereof |
| CN106280391A (en) * | 2016-08-05 | 2017-01-04 | 锦州希尔达汽车零部件有限公司 | A kind of modified thermoplastic polyurethane elastomer and preparation method thereof |
| JP2018115263A (en) * | 2017-01-18 | 2018-07-26 | 信越ポリマー株式会社 | Thermoplastic polyurethane elastomer composition |
| CN107227027A (en) * | 2017-07-20 | 2017-10-03 | 广东创弘材料科技有限公司 | Thermoplastic composite elastomer and preparation method thereof, purposes |
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