CN109354665A - A kind of low cost weather-resistant pu method for producing elastomers - Google Patents
A kind of low cost weather-resistant pu method for producing elastomers Download PDFInfo
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- CN109354665A CN109354665A CN201810978955.2A CN201810978955A CN109354665A CN 109354665 A CN109354665 A CN 109354665A CN 201810978955 A CN201810978955 A CN 201810978955A CN 109354665 A CN109354665 A CN 109354665A
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- resistant
- low cost
- antioxidant
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- diisocyanate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6648—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6651—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to a kind of inexpensive weather-resistant pu method for producing elastomers, include the following steps: polyester polyol, hydrolysis stabilizer, mould inhibitor, antioxidant, ultraviolet absorbing agent and stannous octoate being added to vacuum dehydration in reaction kettle；Diisocyanate is added, vacuum defoamation 30min is after reacting 2h to get base polyurethane prepolymer for use as；Base polyurethane prepolymer for use as is preheated to 80 DEG C, chain extender is added, after being mixed evenly, it pours into the mold of preheating, when the mixture in mold starts gel, covers mold, it is put into the pressurization of vacuum vulcanization machine, and is put into oven 6h after pressure maintaining 3h after depanning at 105~115 DEG C.Polyurethane elastomer made from the method for the present invention has lower production cost, higher physical property and anti-aging property.
Description
Technical field
The present invention relates to polyurethane elastomer fields, and in particular to a kind of preparation of low cost weather-resistant pu elastomer
Method.
Background technique
Polyurethane is a kind of high-molecular compound between rubber and plastics, have high resiliency, high intensity, it is wear-resisting,
Excellent comprehensive performance, especially the polyester polyurethane elastomers such as hardness can design, media-resistant are a kind of polarity macromolecule materials
Material, and the compatibility of nonpolar mineral oil are small, in fuel oil (kerosene, gasoline) and machinery oil (hydraulic oil, machine oil, lubricating oil etc.)
In do not weather within 8 years, therefore be the optimal selection of armored engineering vehicle behavioral system wear-resistant material.But due to the poly- ammonia of polyester-type
The presence of ester bond and residual carboxylic's base in ester, affects its high temperature anti-hydrolytic performance and wet-hot aging performance.Although polyurethane bullet
Property body at normal temperature anti-hydrolytic performance it is fair (in 25 DEG C of normal-temperature water, the time required to loss of tensile strength half, polyester-type bullet
Property body be about 10 years, polyether-type elastomer is about 50 years), but in high-temperature water or under conditions of high temperature and humidity, degrade very fast.
With the demand of Littoral operation, more stringent requirements are proposed for anti-seawater corrosion and hydrothermal aging performance to material,
Traditional polyester polyurethane elastomer has been unable to meet requirement, polycarbonate type and polycaprolactone-type urethane elastomer
Although having the comprehensive performances such as preferable oil resistant and wet and heat ageing resistant, higher cost.
Summary of the invention
It is existing to solve the purpose of the present invention is to provide a kind of inexpensive weather-resistant pu method for producing elastomers
There is the problem of polyurethane performance in technology cannot satisfy the use demand.
The present invention provides a kind of inexpensive weather-resistant pu method for producing elastomers, include the following steps:
1) polyester polyol, hydrolysis stabilizer, mould inhibitor, antioxidant, ultraviolet absorbing agent and stannous octoate are added to
In reaction kettle, in 100~120 DEG C of vacuum dehydration 2-5h；
Wherein, the hydrolysis stabilizer accounts for the 0.625%~1.25% of polyester polyol quality, and mould inhibitor accounts for polyester polyols
The 0.625%~1.25% of alcohol quality, antioxidant account for the 1.25%~2.5% of polyester polyol quality；Ultraviolet absorbing agent accounts for
The 0.625%~1.25% of polyester polyol quality；
2) diisocyanate is added, 2h is reacted at 70~90 DEG C, vacuum defoamation 30min is to get base polyurethane prepolymer for use as；
3) base polyurethane prepolymer for use as made from step 2) is preheated to 80 DEG C, chain extender is added, after being mixed evenly, pours into
It is preheated in 105~115 DEG C of mold, when the mixture in mold starts gel, covers mold, be put into vacuum vulcanization machine and add
It is depressed into 2~5MPa, is put into baking oven, 105~115 DEG C of processing 6h after pressure maintaining 3h after depanning at 105~115 DEG C；
The mass ratio of the polyester polyol, diisocyanate and chain extender is 55:10:35~68:7:25.
Further, the polyester polyol is made by dicarboxylic acids and dihydric alcohol through polycondensation reaction, polyester polyol
Number-average molecular weight be 1000~6000.
Further, the dicarboxylic acids is aliphatic dicarboxylic acid or aromatic binary carboxylic acid.
Further, the dihydric alcohol is selected from one or more of following substances: ethylene glycol, 1,4-butanediol, 1,
6- hexylene glycol, 2,2-dimethyl-1,3-propanediol.
Further, the diisocyanate be 4,4- methyl diphenylene diisocyanate, it is toluene di-isocyanate(TDI), different
Isophorone diisocyanate, hexamethylene diisocyanate, the mixing to one or more of phenyl diisocyanate.
Further, the chain extender is 3,5- dimethythiotoluene diamine, 3,5- diethyl toluene diamine, 3,3'-
One or more of mixing of two chloro- 4,4- diphenylmethanediamiands.
Further, the hydrolysis stabilizer is carbodiimides.
Further, the mould inhibitor is isothiazolinone.
Further, the antioxidant be selected from antioxidant 1010, antioxidant 1076, antioxidant 1024, antioxidant 1098,
The mixture of one or more of antioxidant 245.
Further, the ultraviolet absorbing agent is selected from septichen phenyl ester, 2- (- 5 ˊ of 2 ˊ-hydroxyl-methylbenzene
Base) benzotriazole, 2,4-DihydroxyBenzophenone, ESCALOL 567,2- hydroxyl -4- n-octyloxy two
Benzophenone, 2- (2 '-hydroxyls -3 ', 5 '-two tertiary phenyl) -5- chlorination benzotriazole, one kind or several of single benzoic acid resorcinol
The mixture of kind.
Beneficial effect using aforementioned present invention technical solution is:
There is lower production cost, higher object using polyurethane elastomer made from preparation method of the present invention
Rationality energy and anti-aging property, concrete principle are as follows:
1) using between ester group has the long chain polyester polyol of 2-6 carbon atom for raw material, increases the carbon atom number between ester group
Add, reduce ester group density, improve hydrolytic stability, sea water resistance can be 2-3 times of conventional polyester type polyurethane elastomer；
2) using new liquid amine as chain extender, reaction rate is fast, and demoulding time is short, gained thermoplastic polyurethane elastomer
Initial strength height, product hydrolysis, Good Heat-resistance；
3) by addition hydrolysis stabilizer, mould inhibitor, ultraviolet absorbing agent and antioxidant, novel hydrolysis-resistant polyester is prepared
Type polyurethane elastomer improves the hydrolytic stability and ageing-resistant performance of material, can further improve the wet-heat resisting of elastomer
Aging, ultraviolet-resistant aging and hydrolytic stability performance, especially sea water resistance can be than being not added with the hexylene glycol polyurethane of auxiliary agent
Elastomer improves 2 times or more, improves 5 times or more than fine copper polyester polyurethane elastomer.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.
Embodiment 1
Polyester polyol 380g, hydrolysis stabilizer 2.375g, mould inhibitor 2.375g, antioxidant 1024 are added into reaction kettle
4.75g, ultraviolet absorbing agent 2.375g account for the stannous octoate of polyester polyol quality 300ppm, 115 DEG C of temperature conditions and-
Be put into measuring tank under 0.08~-0.1MPa vacuum degree after dehydration melting mixing 5h, open measuring tank stir and be evacuated to -
Stop vacuum and inflated with nitrogen after 0.085MPa, wherein polyester polyol is condensed by adipic acid and 1,4-butanediol, the equal molecule of number
Quality is 3000；
Diisocyanate 220.59g is added, melts and react 2h at 80 DEG C, vacuum defoamation 30min obtains polyurethane prepolymer
Body；
Base polyurethane prepolymer for use as obtained is preheated to 80 DEG C, chain extender 43.38g is added, is mixed evenly, by mixture
It pours into the mold for being preheated to 105 DEG C, when object to be mixed starts gel, covers mold, be put into vacuum vulcanization machine and be forced into 2-
Product is put into baking oven by 5MPa, the depanning after pressure maintaining 3h at 105 DEG C, and 105 DEG C of processing 6h obtain inexpensive weather-resistant pu bullet
Property body.
The key technical indexes of polyurethane elastomer obtained by the present embodiment: tensile strength: 45.8MPa, elongation:
627.36%, hardness: 84A, hydrothermal aging performance: aging post-tensioning intensity is 12.8MPa, ultraviolet ray ageing performance: after irradiation
Tensile strength is 18.6MPa, and sea water resistance energy: immersion simulated seawater condition post-tensioning intensity is 4.5MPa, and molecular weight distribution is wide
It spends (DMW) :=1.91, number-average molecular weight (Mn): 70000.
Embodiment 2
Polyester polyol 360g, hydrolysis stabilizer 3g, mould inhibitor 3g are added into reaction kettle, 1024 5.4g of antioxidant is purple
Ultraviolet absorbers 3g accounts for the stannous octoate of polyester polyol quality 300ppm, in 115 DEG C of temperature conditions and -0.08~-0.1MPa
Measuring tank is put under vacuum degree after dehydration melting mixing 5h, measuring tank is opened and stirs and stop vacuum after being evacuated to -0.085MPa
And inflated with nitrogen, wherein polyester polyol is condensed by adipic acid and 1,4-butanediol, number average molecular weight 3000；
Diisocyanate 208.98g is added, melts and react 2h at 80 DEG C, vacuum defoamation 30min obtains polyurethane prepolymer
Body；
Base polyurethane prepolymer for use as obtained is preheated to 80 DEG C, chain extender 41.19g is added, is mixed evenly, by mixture
It pours into the mold for being preheated to 105 DEG C, when object to be mixed starts gel, covers mold, be put into vacuum vulcanization machine and be forced into 2-
Product is put into baking oven by 5MPa, the depanning after pressure maintaining 3h at 105 DEG C, and 105 DEG C of processing 6h obtain inexpensive weather-resistant pu bullet
Property body.
The key technical indexes of polyurethane elastomer obtained by the present embodiment: tensile strength: 44.64MPa, elongation:
602.08%, hardness: 84A, hydrothermal aging performance: aging post-tensioning intensity is 11.8MPa, ultraviolet ray ageing performance: after irradiation
Tensile strength is 16.6MPa, and sea water resistance energy: immersion simulated seawater condition post-tensioning intensity is 4.3MPa, and molecular weight distribution is wide
It spends (DMW) :=1.92, number-average molecular weight (Mn): 65000.
Embodiment 3
Polyester polyol 380g, hydrolysis stabilizer 3.8g, mould inhibitor 3.8g, antioxidant 1024 are added into reaction kettle
7.6g, ultraviolet absorbing agent 3.8g account for the stannous octoate of polyester polyol quality 300ppm, in 115 DEG C of temperature conditions and -0.08
Measuring tank is put under~-0.1MPa vacuum degree after dehydration melting mixing 5h, measuring tank is opened and stirs and be evacuated to -0.085MPa
After stop vacuum and inflated with nitrogen, wherein polyester polyol is condensed by adipic acid and 1,4-butanediol, and number average molecular weight is
2000；
Diisocyanate 220.59g is added, melts and react 2h at 80 DEG C, vacuum defoamation 30min obtains polyurethane prepolymer
Body；
Base polyurethane prepolymer for use as obtained is preheated to 80 DEG C, chain extender 43.38g is added, is mixed evenly, by mixture
It pours into the mold for being preheated to 105 DEG C, when object to be mixed starts gel, covers mold, be put into vacuum vulcanization machine and be forced into 2-
Product is put into baking oven by 5MPa, the depanning after pressure maintaining 3h at 105 DEG C, and 105 DEG C of processing 6h obtain inexpensive weather-resistant pu bullet
Property body.
The key technical indexes of polyurethane elastomer obtained by the present embodiment: tensile strength: 43.9MPa, elongation:
632.9%, hardness: 85A, hydrothermal aging performance: aging post-tensioning intensity is 14.8MPa, ultraviolet ray ageing performance: irradiation post-tensioning
Stretching intensity is 18.5MPa, and sea water resistance energy: immersion simulated seawater condition post-tensioning intensity is 5.2MPa, molecular weight distribution width
(DMW) :=1.95, number-average molecular weight (Mn): 78000.
Embodiment 4
Polyester polyol 360g, hydrolysis stabilizer 3.6g, mould inhibitor 3.6g, antioxidant 1024 are added into reaction kettle
7.2g, ultraviolet absorbing agent 3.6g account for the stannous octoate of polyester polyol quality 300ppm, in 115 DEG C of temperature conditions and -0.08
Measuring tank is put under~-0.1MPa vacuum degree after dehydration melting mixing 5h, measuring tank is opened and stirs and be evacuated to -0.085MPa
After stop vacuum and inflated with nitrogen, wherein polyester polyol is condensed by adipic acid and 1,4-butanediol, and number average molecular weight is
2000；
Diisocyanate 208.98g is added, melts and react 2h at 80 DEG C, vacuum defoamation 30min obtains polyurethane prepolymer
Body；
Base polyurethane prepolymer for use as obtained is preheated to 80 DEG C, chain extender 41.19g is added, is mixed evenly, by mixture
It pours into the mold for being preheated to 105 DEG C, when object to be mixed starts gel, covers mold, be put into vacuum vulcanization machine and be forced into 2-
Product is put into baking oven by 5MPa, the depanning after pressure maintaining 3h at 105 DEG C, and 105 DEG C of processing 6h obtain inexpensive weather-resistant pu bullet
Property body.
The key technical indexes of polyurethane elastomer obtained by the present embodiment: tensile strength: 41.8MPa, elongation:
615.85%, hardness: 86A, hydrothermal aging performance: aging post-tensioning intensity is 14.8MPa, ultraviolet ray ageing performance: after irradiation
Tensile strength is 19.7MPa, and sea water resistance energy: immersion simulated seawater condition post-tensioning intensity is 4.7MPa, and molecular weight distribution is wide
It spends (DMW) :=1.85, number-average molecular weight (Mn): 75000.
Embodiment 5
Addition polyester polyol 400g, hydrolysis stabilizer 3.2g, mould inhibitor 3.2g, 1024 6g of antioxidant into reaction kettle,
Ultraviolet absorbing agent 3.2g accounts for the stannous octoate of polyester polyol quality 300ppm, 115 DEG C of temperature conditions and -0.08~-
Measuring tank is put under 0.1MPa vacuum degree after dehydration melting mixing 5h, after opening measuring tank stirs and is evacuated to -0.085MPa
Stop vacuum and inflated with nitrogen, wherein polyester polyol is condensed by adipic acid and 1,4-butanediol, and number average molecular weight is
2000；
Diisocyanate 209.07g is added, melts and react 2h at 80 DEG C, vacuum defoamation 30min obtains polyurethane prepolymer
Body；
Base polyurethane prepolymer for use as obtained is preheated to 80 DEG C, chain extender 57.04g is added, is mixed evenly, by mixture
It pours into the mold for being preheated to 105 DEG C, when object to be mixed starts gel, covers mold, be put into vacuum vulcanization machine and be forced into 2-
Product is put into baking oven by 5MPa, the depanning after pressure maintaining 3h at 105 DEG C, and 105 DEG C of processing 6h obtain inexpensive weather-resistant pu bullet
Property body.
The key technical indexes of polyurethane elastomer obtained by the present embodiment: tensile strength: 49.2MPa, elongation:
607.66%, hardness: 84A, hydrothermal aging performance: aging post-tensioning intensity is 13.8MPa, ultraviolet ray ageing performance: after irradiation
Tensile strength is 16.6MPa, and sea water resistance energy: immersion simulated seawater condition post-tensioning intensity is 4.82MPa, and molecular weight distribution is wide
It spends (DMW) :=1.895, number-average molecular weight (Mn): 72000.
Embodiment 6
Polyester polyol 400g, hydrolysis stabilizer 5g, mould inhibitor 5g are added into reaction kettle, 1024 10g of antioxidant is purple
Ultraviolet absorbers 5g accounts for the stannous octoate of polyester polyol quality 300ppm, in 115 DEG C of temperature conditions and -0.08~-0.1MPa
Measuring tank is put under vacuum degree after dehydration melting mixing 5h, measuring tank is opened and stirs and stop vacuum after being evacuated to -0.085MPa
And inflated with nitrogen, wherein polyester polyol is condensed by adipic acid and 1,4-butanediol, number average molecular weight 2000；
Diisocyanate 208.62g is added, melts and react 2h at 80 DEG C, vacuum defoamation 30min obtains polyurethane prepolymer
Body；
Base polyurethane prepolymer for use as obtained is preheated to 80 DEG C, chain extender 57.49g is added, is mixed evenly, by mixture
It pours into the mold for being preheated to 105 DEG C, when object to be mixed starts gel, covers mold, be put into vacuum vulcanization machine and be forced into 2-
Product is put into baking oven by 5MPa, the depanning after pressure maintaining 3h at 105 DEG C, and 105 DEG C of processing 6h obtain inexpensive weather-resistant pu bullet
Property body.
The key technical indexes of polyurethane elastomer obtained by the present embodiment: tensile strength: 53.1MPa, elongation:
522.15%, hardness: 85A, hydrothermal aging performance: aging post-tensioning intensity is 13.8MPa, ultraviolet ray ageing performance: after irradiation
Tensile strength is 19.6MPa, and sea water resistance energy: immersion simulated seawater condition post-tensioning intensity is 4.9MPa, and molecular weight distribution is wide
It spends (DMW) :=1.91, number-average molecular weight (Mn): 73000.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of low cost weather-resistant pu method for producing elastomers, which comprises the steps of:
1) polyester polyol, hydrolysis stabilizer, mould inhibitor, antioxidant, ultraviolet absorbing agent and stannous octoate are added to reaction
In kettle, in 100~120 DEG C of vacuum dehydration 2-5h；
Wherein, the hydrolysis stabilizer accounts for the 0.625%~1.25% of polyester polyol quality, and mould inhibitor accounts for polyester polyol matter
The 0.625%~1.25% of amount, antioxidant accounts for the 1.25%~2.5% of polyester polyol quality；Ultraviolet absorbing agent accounts for polyester
The 0.625%~1.25% of polyol quality；
2) diisocyanate is added, 2h is reacted at 70~90 DEG C, vacuum defoamation 30min is to get base polyurethane prepolymer for use as；
3) base polyurethane prepolymer for use as made from step 2) is preheated to 80 DEG C, chain extender is added, after being mixed evenly, pours into preheating
Into 105~115 DEG C of molds, when the mixture in mold starts gel, mold is covered, vacuum vulcanization machine is put into and is forced into
2~5MPa is put into baking oven, 105~115 DEG C of processing 6h at 105~115 DEG C after depanning after pressure maintaining 3h；
The mass ratio of the polyester polyol, diisocyanate and chain extender is 55:10:35~68:7:25.
2. low cost weather-resistant pu method for producing elastomers according to claim 1, which is characterized in that described
Polyester polyol is made by dicarboxylic acids and dihydric alcohol through polycondensation reaction, and the number-average molecular weight of polyester polyol is 1000~
6000。
3. low cost weather-resistant pu method for producing elastomers according to claim 2, which is characterized in that described
Dicarboxylic acids is aliphatic dicarboxylic acid or aromatic binary carboxylic acid.
4. low cost weather-resistant pu method for producing elastomers according to claim 2, which is characterized in that described
Dihydric alcohol is selected from one or more of following substances: ethylene glycol, 1,4-butanediol, 1,6- hexylene glycol, 2,2- dimethyl -1,3-
Propylene glycol.
5. low cost weather-resistant pu method for producing elastomers according to claim 1, which is characterized in that described
Diisocyanate is 4,4- methyl diphenylene diisocyanate, toluene di-isocyanate(TDI), isophorone diisocyanate, six methylenes
Group diisocyanate, the mixing to one or more of phenyl diisocyanate.
6. low cost weather-resistant pu method for producing elastomers according to claim 1, which is characterized in that described
Chain extender is 3,5- dimethythiotoluene diamine, 3,5- diethyl toluene diamine, chloro- 4, the 4- diphenylmethanediamiand of 3,3'- bis-
One or more of mixing.
7. low cost weather-resistant pu method for producing elastomers according to claim 1, which is characterized in that described
Hydrolysis stabilizer is carbodiimides.
8. low cost weather-resistant pu method for producing elastomers according to claim 1, which is characterized in that described
Mould inhibitor is isothiazolinone.
9. low cost weather-resistant pu method for producing elastomers according to claim 1, which is characterized in that described
Antioxidant is selected from one or more of antioxidant 1010, antioxidant 1076, antioxidant 1024, antioxidant 1098, antioxidant 245
Mixture.
10. low cost weather-resistant pu method for producing elastomers according to claim 1, which is characterized in that described
Ultraviolet absorbing agent be selected from septichen phenyl ester, 2- (- 5 ˊ of 2 ˊ-hydroxyl-aminomethyl phenyl) benzotriazole, 2,4- dihydroxy
Base benzophenone, ESCALOL 567,2-hydroxy-4-n-octoxybenzophenone, 2- (2 '-hydroxyls -3 ',
5 '-two tertiary phenyl) -5- chlorination benzotriazole, single benzoic acid resorcinol one or more of mixtures.
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| CN201810978955.2A CN109354665A (en) | 2018-08-27 | 2018-08-27 | A kind of low cost weather-resistant pu method for producing elastomers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112045914A (en) * | 2020-08-25 | 2020-12-08 | 河北华密橡胶科技股份有限公司 | Method for manufacturing multilayer multi-hardness polyurethane rubber core |
| CN116622218A (en) * | 2023-05-10 | 2023-08-22 | 苏州美福瑞新材料科技有限公司 | Ageing-resistant polyurethane material, preparation method and application thereof on sealing ring |
-
2018
- 2018-08-27 CN CN201810978955.2A patent/CN109354665A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112045914A (en) * | 2020-08-25 | 2020-12-08 | 河北华密橡胶科技股份有限公司 | Method for manufacturing multilayer multi-hardness polyurethane rubber core |
| CN116622218A (en) * | 2023-05-10 | 2023-08-22 | 苏州美福瑞新材料科技有限公司 | Ageing-resistant polyurethane material, preparation method and application thereof on sealing ring |
| CN116622218B (en) * | 2023-05-10 | 2023-12-12 | 苏州美福瑞新材料科技有限公司 | Ageing-resistant polyurethane material, preparation method and application thereof on sealing ring |
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