CN115073875A - Wet-type anti-slip thermoplastic elastomer and preparation method thereof - Google Patents

Wet-type anti-slip thermoplastic elastomer and preparation method thereof Download PDF

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CN115073875A
CN115073875A CN202210774280.6A CN202210774280A CN115073875A CN 115073875 A CN115073875 A CN 115073875A CN 202210774280 A CN202210774280 A CN 202210774280A CN 115073875 A CN115073875 A CN 115073875A
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thermoplastic elastomer
parts
wet
elastomer
filler
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CN115073875B (en
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成玮楠
陆云
李倩倩
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Nantong Polymax Elastomer Technology Co ltd
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Nantong Polymax Elastomer Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00Properties characterising the ingredient of the composition
    • C08L2207/04Thermoplastic elastomer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The application relates to the technical field of elastomer production, and particularly discloses a wet-type anti-slip thermoplastic elastomer and a preparation method thereof. The wet-type anti-slip thermoplastic elastomer is obtained by extruding and processing a mixture, wherein the mixture comprises a material A and a material B, and the material A comprises the following components in parts by weight: 80-120 parts of styrene thermoplastic elastomer, 50-180 parts of filling oil, 10-60 parts of polypropylene, 10-90 parts of rubber filler, 5-30 parts of tackifying resin, 0.1-10 parts of peroxide cross-linking agent, 0.1-10 parts of processing aid and 60-100 parts of inorganic filler. According to the application, the mixture is obtained by combining the material A and the material B, and then the wet-type non-slip thermoplastic elastomer is obtained by extrusion processing of the mixture, so that the retention rate of the mechanical property of the elastomer after damp-heat aging is improved, and the wet-type non-slip property of the elastomer is also improved.

Description

Wet-type anti-slip thermoplastic elastomer and preparation method thereof
Technical Field
The application relates to the technical field of elastomer production, in particular to a wet-type anti-slip thermoplastic elastomer and a preparation method thereof.
Background
The thermoplastic elastomer is a novel polymer material between rubber and resin, has high elasticity similar to vulcanized rubber, can freely change shape under heating condition, has good processability, and can be widely applied to a plurality of fields of daily necessities, medical instruments, vehicles and the like. When the thermoplastic elastomer material is applied to shoe materials, ground mats, tool handles, trundles, steam room floors and the like, the thermoplastic elastomer material is easy to slip due to the fact that the thermoplastic elastomer material is stained with rainwater, sweat and accumulated water, so that normal use is affected, certain potential safety hazards exist, and the thermoplastic elastomer with the wet-type slip prevention effect is required to be involved in the scenes.
Chinese patent publication No. CN111117145A discloses a wet-type slip-resistant thermoplastic elastomer and a preparation method thereof, wherein the wet-type slip-resistant thermoplastic elastomer comprises the following components by weight percent: 20-25% of hydrogenated styrene/butadiene copolymer, 20-50% of petroleum resin, 5-25% of maleic anhydride grafted polyolefin and 10-25% of polypropylene. The wet skid-resistant thermoplastic elastomer comprises the following steps: (1) mixing hydrogenated styrene/butadiene copolymer and food-grade white oil, and then stirring for 8-10 minutes by using a high-speed stirrer until the temperature of the material reaches 70 ℃, and continuing stirring for 4 minutes after the temperature reaches to obtain an intermediate A; (2) uniformly mixing petroleum resin and maleic acid glycoside grafted polyolefin, and granulating by using a double-screw extruder to obtain an intermediate B; and step three, mixing the intermediate A, the intermediate B, the polypropylene and the calcium carbonate, uniformly stirring, and then extruding and granulating by using a double-screw extruder to obtain the wet-type anti-slip thermoplastic elastomer.
In view of the above-mentioned related arts, the inventors believe that the thermoplastic elastomer in the related art has a wet anti-slip effect, but when the thermoplastic elastomer is exposed to a high-temperature and high-humidity environment for a long time, the high-temperature steam may age the thermoplastic elastomer, which affects the mechanical properties of the thermoplastic elastomer.
Disclosure of Invention
In the related art, when the thermoplastic elastomer is in an environment of high temperature and high humidity for a long time, high-temperature steam easily affects the mechanical properties of the thermoplastic elastomer. In order to improve the defect, the application provides a wet skid-proof thermoplastic elastomer and a preparation method thereof.
In a first aspect, the present application provides a wet-type anti-slip thermoplastic elastomer, which adopts the following technical scheme:
the wet-type anti-slip thermoplastic elastomer is obtained by extrusion processing of a mixed material, wherein the mixed material comprises a material A and a material B, and the material A comprises the following components in parts by weight: 80-120 parts of styrene thermoplastic elastomer, 50-180 parts of filling oil, 10-60 parts of polypropylene, 10-90 parts of rubber filler, 5-30 parts of tackifying resin, 0.1-10 parts of peroxide cross-linking agent, 0.1-10 parts of processing aid and 60-100 parts of inorganic filler, wherein the rubber filler comprises unvulcanized styrene butadiene rubber, the material B comprises composite filler and acrylic acid, and the composite filler is prepared from crushed products of waste asphalt pavements.
By adopting the technical scheme, compared with the related technology, the wet-type anti-slip thermoplastic elastomer is obtained by combining the material A and the material B and then extruding and processing the mixture. The composite filler in the material B is a combination of the asphaltene and the pavement filler, and the waste asphalt pavement is naturally aged in the original service process, so that the carboxyl content in the asphaltene of the composite filler is greatly improved compared with that of the freshly mixed asphalt, and the carboxyl in the asphaltene of the composite filler is mutually associated with the acrylic acid through hydrogen bonds. When the material A and the material B are mixed and subjected to extrusion processing together, acrylic acid and styrene butadiene rubber in the material A are crosslinked under the action of a peroxide crosslinking agent, so that a compound of styrene butadiene rubber, asphaltene and pavement filler is formed. The compound not only realizes the vulcanization of the styrene butadiene rubber, but also introduces the asphaltene into the elastomer, thereby improving the mechanical property of the elastomer. The asphalt introduced by the composite filler is aged in the original service process, so that the softening point of the asphalt is higher than that of the common fresh asphalt, and the asphalt introduced by the composite filler is difficult to age further even in a damp and hot environment, so that the resistance of the elastomer to damp and hot aging is enhanced, and the retention rate of the mechanical property of the elastomer after damp and hot aging is improved.
Preferably, the material B comprises the following components in parts by weight: 40-60 parts of composite filler and 8-10 parts of acrylic acid.
By adopting the technical scheme, the raw material proportion of the material B is optimized, and the retention rate of the mechanical property of the elastomer after humid heat aging is improved.
Preferably, the component of the material B also comprises 16 to 20 parts by weight of chitosan.
By adopting the technical scheme, the molecules in the chitosan contain amino, and the amino in the chitosan molecules can be combined with carboxyl in the composite filler asphaltene and carboxyl in the acrylic acid to form carboxylate, so that indirect combination between the acrylic acid and the asphaltene is realized, the combination effect between the acrylic acid and the composite filler asphaltene is enhanced, and the mechanical property of the elastomer is improved. In addition, the water resistance of the chitosan after the damp and heat treatment is improved, so that the permeation rate of high-temperature water vapor in a damp and heat environment into the elastomer is reduced, and the retention rate of the mechanical property of the elastomer after damp and heat aging is improved.
Preferably, the mixture is prepared from the material A and the material B according to the following ratio of (4.5-5.5): 1 by weight ratio.
By adopting the technical scheme, the proportion of the material A and the material B is optimized, and the retention rate of the mechanical property of the elastomer after humid heat aging is favorably improved.
Preferably, the composite filler in the material B component is prepared according to the following method:
(1) uniformly mixing the crushed product of the waste asphalt pavement with the pretreatment liquid to obtain mixed slurry, and then standing the mixed slurry for 18-24 hours; in the step, the components of the pretreatment liquid comprise a softening auxiliary agent and a foaming agent, wherein the foaming agent is a chemical foaming agent with the decomposition temperature of 50-70 ℃;
(2) and after standing, heating the mixed slurry under the water bath heating condition of 70-80 ℃ for 30-60min, then cooling the mixed slurry to 15-25 ℃, filtering to remove a liquid phase in the mixed slurry, and obtaining the residual solid which is the composite filler.
Through adopting above-mentioned technical scheme, this application soaks the broken product of abandonment bituminous paving through pretreatment fluid, and the softening auxiliary agent in the pretreatment fluid makes the asphaltene in the broken product of abandonment bituminous paving soften to carry the foaming agent and permeate to asphaltene. After water bath heating, the foaming agent foams in the asphaltene on the surface of the crushed product of the waste asphalt pavement, and a porous structure is formed on the surface of the asphaltene after cooling, so that the composite filler is obtained. The porous structure of the foaming agent generated in the asphaltene expands the surface area of the composite filler, increases the combination degree of the asphaltene, the acrylic acid and the styrene butadiene rubber, improves the mechanical property of the elastomer, and is beneficial to improving the retention rate of the mechanical property of the elastomer after humid heat aging.
Preferably, the crushed product of the waste asphalt pavement has a softening point of an asphalt component of 65 to 70 ℃.
By adopting the technical scheme, the softening point of the asphalt is gradually increased along with the natural aging of the asphalt in the service process of the asphalt pavement, and when the softening point of the asphalt in the crushed product of the waste asphalt pavement is between 65 and 70 ℃, the aging degree of the asphaltene is enough to resist the damp-heat environment. When the softening point of the asphalt is higher than 70 ℃, the softening effect generated by the softening auxiliary agent is limited, so that the foaming agent cannot enter the asphalt, and the formation of a porous structure in the asphalt is influenced.
Preferably, the chemical foaming agent in the pretreatment solution is azobisisobutyronitrile.
By adopting the technical scheme, the azodiisobutyronitrile can be decomposed to generate nitrogen after being heated, and the nitrogen can enable the asphaltene to generate air holes when being diffused in the asphaltene, so that the foaming effect is achieved.
Preferably, the softening auxiliary agent is formed by mixing xylene and styrene.
By adopting the technical scheme, the free radicals generated during the decomposition of the azodiisobutyronitrile can promote the polymerization of styrene in the softening auxiliary agent, so that the newly generated air holes are supported, the collapse of the air holes is reduced, the combination degree among the asphaltene, the acrylic acid and the styrene butadiene rubber is increased, the mechanical property of the elastomer is improved, and the retention rate of the mechanical property of the elastomer after humid heat aging is favorably improved.
Preferably, the components of the pretreatment liquid further comprise oil shale waste.
By adopting the technical scheme, the oil shale slag and the filling oil have good compatibility, the oil shale slag added into the pretreatment liquid can be attached to the surface of the composite filler, and the filling oil is adsorbed when the mixture is extruded and processed, so that the lubricating effect on the composite filler is achieved, the dispersion of the composite filler is promoted, the distribution uniformity of the composite filler is improved, and the possibility of influence on the mechanical property of the elastomer due to uneven distribution of the composite filler is reduced.
In a second aspect, the present application provides a method for preparing a wet-type anti-slip thermoplastic elastomer, which adopts the following technical scheme.
A preparation method of a wet-type skid-proof thermoplastic elastomer comprises the following steps:
(1) uniformly mixing a styrene thermoplastic elastomer, filling oil, polypropylene, a rubber filler, tackifying resin, a peroxide cross-linking agent, a processing aid and an inorganic filler to obtain a material A; uniformly mixing the composite filler and acrylic acid to obtain a material B;
(2) and mixing the material A and the material B, uniformly stirring to obtain a mixture, and then extruding and granulating the mixture at the temperature of 160-240 ℃ to obtain the wet-type anti-slip thermoplastic elastomer.
By adopting the technical scheme, the material A and the material B are mixed to obtain a mixed material, and the mixed material is extruded and granulated to obtain the wet-type anti-slip thermoplastic elastomer.
In summary, the present application has the following beneficial effects:
1. in the mixture, acrylic acid is combined with carboxyl in the composite filler asphaltene, and the peroxide cross-linking agent promotes the cross-linking between the acrylic acid and the styrene-butadiene rubber under the temperature condition of extrusion processing to form a compound of the styrene-butadiene rubber, the asphaltene and the pavement filler, thereby realizing the vulcanization of the styrene-butadiene rubber and introducing the asphaltene into the elastomer, and improving the mechanical property of the elastomer. The asphaltene introduced by the composite filler is aged in the original service process, so that the further aging is difficult to occur even in a damp and hot environment, and the retention rate of the mechanical property of the elastomer after the damp and hot aging is improved.
2. According to the application, the broken products of the waste asphalt pavement are soaked through the pretreatment liquid, the foaming agent in the pretreatment liquid is infiltrated into the asphaltene under the action of the softening auxiliary agent, the porous structure of the foaming agent generated in the asphaltene enlarges the surface area of the composite filler, the combination degree among the asphaltene, the acrylic acid and the styrene-butadiene rubber is increased, the mechanical property of the elastomer is improved, and the retention rate of the mechanical property of the elastomer after wet-heat aging is favorably improved.
3. According to the method, the material A and the material B are mixed to obtain a mixture, and the mixture is extruded and granulated to obtain the wet-type anti-slip thermoplastic elastomer.
Detailed Description
The present application will be described in further detail with reference to examples, preparations and comparative examples, and all of the starting materials of the present application are commercially available.
Preparation example of composite Filler
The following will explain preparation example 1 as an example.
Preparation example 1
In the preparation example, the crushed product of the waste asphalt pavement is prepared by crushing the waste asphalt pavement with the service life of 10 years, the average particle size is 860 micrometers, and the model of the asphalt is 70# matrix asphalt.
In the preparation example, the composite filler is prepared according to the following method: (1) uniformly mixing 100kg of crushed products of the waste asphalt pavement with 40kg of pretreatment liquid to obtain mixed slurry, and then standing the mixed slurry for 20 hours; in the step, the components of the pretreatment liquid comprise 35kg of softening auxiliary agent and 5kg of foaming agent, wherein the softening auxiliary agent is dimethylbenzene, and the foaming agent is azodiisobutyronitrile;
(2) and after standing, heating the mixed slurry for 45min under the water bath heating condition of 75 ℃, then cooling the mixed slurry to 20 ℃, filtering to remove a liquid phase in the mixed slurry, and airing the rest solid to obtain the composite filler.
As shown in Table 1, the preparation examples 1 to 5 were different in the raw material ratio of the pretreatment liquid.
TABLE 1
Sample(s) Softening auxiliary agent/kg Blowing agent/kg
Preparation example 1 35 5
Preparation example 2 34 6
Preparation example 3 33 7
Preparation example 4 32 8
Preparation example 5 31 9
Preparation example 6
This production example is different from production example 5 in that the softening assistant consists of 30kg of xylene and 3kg of styrene.
Preparation example 7
The difference between this preparation example and preparation example 6 is that the pretreatment liquid further included 2kg of oil shale waste having an average particle size of 40 μm.
Examples
Examples 1 to 5
The following description will be given by taking example 1 as an example.
Example 1
In the embodiment, the filling oil is 26# naphthenic oil, the average molecular weight of polypropylene is 320000, the rubber filler is styrene butadiene rubber which is not vulcanized, the tackifying resin is C5 hydrogenated petroleum resin, the peroxide crosslinking agent is dicumyl peroxide, and the processing aid is prepared by mixing hindered phenol antioxidant AT-10, calcium stearate and deodorant GRE-807 according to the weight ratio of 1: 3: 4, the inorganic filler is silica fume, and the composite filler is the composite filler of preparation example 1.
In this example, the wet skid-resistant thermoplastic elastomer was prepared according to the following steps:
(1) uniformly mixing 80kg of styrene thermoplastic elastomer, 50kg of filling oil, 10kg of polypropylene, 10kg of rubber filler, 5kg of tackifying resin, 0.1kg of peroxide crosslinking agent, 0.1kg of processing aid and 60kg of inorganic filler to obtain a material A; uniformly mixing 40kg of composite filler and 8kg of acrylic acid to obtain a material B;
(2) and mixing the 160kgA material and the 40kgB material, uniformly stirring to obtain a mixture, and then extruding and granulating the mixture at the temperature of 220 ℃ to obtain the wet skid-proof thermoplastic elastomer.
As shown in Table 2, examples 1 to 5 differ mainly in the ratio of the component A
TABLE 2
Figure BDA0003726012640000061
Examples 6 to 9
As shown in Table 3, examples 6 to 9 are different from example 3 in the compounding ratio of the B component.
TABLE 3
Sample(s) Composite filler/kg Acrylic acid/kg
Example 3 40 8
Example 6 45 8.5
Example 7 50 9
Example 8 55 9.5
Example 9 60 10
Example 10
The difference between this example and example 7 is that the material B also contains 16kg of chitosan.
As shown in Table 4, examples 10-14 differ in that the blend was made by blending 40kgB with a different weight of Material A.
TABLE 4
Sample(s) Example 10 Example 11 Example 12 Example 13 Example 14
Dosage of A material/kg 160 180 200 220 240
Examples 15 to 20
As shown in Table 5, examples 15 to 20 are different from example 12 in the preparation examples of the composite fillers.
TABLE 5
Sample(s) Preparation example of composite Filler
Example 12 Preparation example 1
Example 15 Preparation example 2
Example 16 Preparation example 3
Example 17 Preparation example 4
Example 18 Preparation example 5
Example 19 Preparation example 6
Example 20 Preparation example 7
Comparative example
Comparative example 1
Refer to example 1 of chinese patent publication No. CN111117145A for a wet skid-proof thermoplastic elastomer.
Comparative example 2
This comparative example differs from example 3 in that the rubber filler in the material a component is vulcanized styrene butadiene rubber.
Comparative example 3
This comparative example differs from example 3 in that acrylic acid is not included in the composition of feed B.
Comparative example 4
This comparative example differs from example 3 in that the composite filler in the B feed component was replaced with a crushed product of granite.
Performance detection test method
Moisture and heat resistance
The detection is carried out according to the following steps:
(1) the tensile strength of the elastomers prepared in the examples and the preparation examples was measured and recorded as T1 by referring to GB/T528 determination of tensile Properties of vulcanized rubber and thermoplastic rubber;
(2) referring to the specification in GB/T15905-1995 vulcanized rubber humid heat aging test method, the elastomer in the step (1) is placed for 10 days in an environment with the temperature of 70 ℃ and the humidity of 93 percent, and the tensile strength of the elastomer is detected again and is recorded as T2;
(3) the loss rate of tensile strength was calculated according to T1 and T2, and the results are shown in Table 6.
The formula for calculating the loss rate is as follows:
Figure BDA0003726012640000071
TABLE 6
Sample(s) Rate of loss/%) Sample(s) Rate of loss/%)
Example 1 6.8 Example 13 5.7
Example 2 6.7 Example 14 5.8
Example 3 6.5 Example 15 5.5
Example 4 6.6 Example 16 5.4
Example 5 6.7 Example 17 5.4
Example 6 6.3 Example 18 5.5
Example 7 6.1 Example 19 5.1
Example 8 6.2 Example 20 4.6
Example 9 6.4 Comparative example 1 32.1
Example 10 5.7 Comparative example 2 24.1
Example 11 5.6 Comparative example 3 22.6
Example 12 5.6 Comparative example 4 20.5
Second, non-skid property
The static friction coefficient of the test piece made of the elastomer of the present application was measured with reference to GB/T13826-.
TABLE 7
Sample(s) Coefficient of static friction Sample(s) Coefficient of static friction
Example 1 0.35 Example 4 0.34
Example 2 0.35 Example 5 0.35
Example 3 0.35 Comparative example 1 0.31
As can be seen by combining examples 1-5 with comparative example 1 and by combining Table 6, the loss ratios measured for examples 1-5 are all less than comparative example 1, indicating that the wet skid resistant thermoplastic elastomer of the present application is relatively less aged in hot and humid environments than the elastomer of comparative example 1.
It can be seen by combining example 3 and comparative examples 2 to 4 and by combining Table 6 that, when any one of unvulcanized styrene-butadiene rubber, acrylic or composite filler is absent from the mixture, since it is difficult to form a composite of styrene-butadiene rubber, asphaltene and road surface filler, the wet heat resistance of the elastomer is affected and the loss of tensile strength of the elastomer after wet heat treatment is increased.
It can be seen from the combination of example 3 and examples 6-9 and from table 6 that the blend ratio of material B selected in example 7 is more helpful to improve the resistance of the elastomer to humid heat aging and to reduce the loss rate of the tensile strength of the elastomer after humid heat aging treatment.
As can be seen by combining example 7 and example 10 and table 6, the loss rate measured in example 10 is lower than that in example 7, which shows that the water resistance of the acrylic acid reinforced by the chitosan in the mixture of example 10 is improved after the moist heat treatment, so that the permeation rate of high-temperature water vapor in a moist heat environment into the elastomer is reduced, and the loss rate of the tensile strength of the elastomer after the moist heat aging treatment is reduced.
As can be seen by combining examples 10-14 with Table 6, the ratio of material A to material B selected in example 12 is more conducive to improving the resistance of the elastomer to humid heat aging, reducing the rate of loss of tensile strength of the elastomer after humid heat aging.
As can be seen by combining example 12, examples 15-18 and Table 6, the composite filler selected in example 16 is more helpful to improve the resistance of the elastomer to humid heat aging, and reduces the loss rate of the tensile strength of the elastomer after humid heat aging treatment.
It can be seen from the combination of example 16 and example 19 and table 6 that in example 19, the azobisisobutyronitrile is used to promote the polymerization of styrene, so that the collapse of air holes is reduced, the combination degree between the asphaltene, the acrylic acid and the styrene butadiene rubber is increased, and the mechanical property of the elastomer is improved, thereby contributing to the improvement of the retention rate of the mechanical property of the elastomer after humid and hot aging.
It can be seen by combining examples 19 and 20 and table 6 that the oil shale waste plays a role in lubricating by adsorbing and filling oil in the extrusion processing process, so that the dispersion of the composite filler is promoted, the distribution uniformity of the composite filler is improved, the possibility of influence on the mechanical property of the elastomer due to uneven distribution of the composite filler is reduced, and the retention rate of the mechanical property of the elastomer after humid and hot aging is also improved.
As can be seen by combining examples 1-5, comparative example 1 and Table 7, the static friction coefficients of the samples prepared from the elastomers of examples 1-5 of the present application were all greater than that of comparative example 1 in the wet friction test, which indicates that the elastomer of the present application has better anti-slip effect than that of comparative example 1, and is not easy to slip even if being stained with rain, sweat and water, thereby reducing the potential safety hazard caused by slip in a high humidity environment.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (10)

1. The wet-type anti-slip thermoplastic elastomer is characterized in that the wet-type anti-slip thermoplastic elastomer is obtained by extrusion processing of a mixed material, wherein the mixed material comprises a material A and a material B, and the material A comprises the following components in parts by weight: 80-120 parts of styrene thermoplastic elastomer, 50-180 parts of filling oil, 10-60 parts of polypropylene, 10-90 parts of rubber filler, 5-30 parts of tackifying resin, 0.1-10 parts of peroxide cross-linking agent, 0.1-10 parts of processing aid and 60-100 parts of inorganic filler, wherein the rubber filler comprises unvulcanized styrene butadiene rubber, the material B comprises composite filler and acrylic acid, and the composite filler is prepared from crushed products of waste asphalt pavements.
2. The wet skid-resistant thermoplastic elastomer as claimed in claim 1, wherein said B-side comprises the following components in parts by weight: 40-60 parts of composite filler and 8-10 parts of acrylic acid.
3. The wet skid-resistant thermoplastic elastomer as claimed in claim 2, wherein said component B further comprises chitosan in an amount of 16-20 parts by weight.
4. The wet skid-resistant thermoplastic elastomer as claimed in claim 1, wherein said blend consists of materials A and B according to the ratio (4.5-5.5): 1 by weight ratio.
5. The wet skid-resistant thermoplastic elastomer as claimed in claim 1, wherein the composite filler in the component B is prepared by the following method:
(1) uniformly mixing the crushed product of the waste asphalt pavement with the pretreatment liquid to obtain mixed slurry, and then standing the mixed slurry for 18-24 hours; in the step, the components of the pretreatment liquid comprise a softening auxiliary agent and a foaming agent, wherein the foaming agent is a chemical foaming agent with the decomposition temperature of 50-70 ℃;
(2) and after standing, heating the mixed slurry under the water bath heating condition of 70-80 ℃ for 30-60min, then cooling the mixed slurry to 15-25 ℃, filtering to remove a liquid phase in the mixed slurry, and obtaining the residual solid which is the composite filler.
6. The wet skid-resistant thermoplastic elastomer as claimed in claim 5, wherein the asphalt component of the crushed product of the waste asphalt pavement has a softening point of 65-70 ℃.
7. The wet skid resistant thermoplastic elastomer as claimed in claim 6, wherein said chemical blowing agent in said pretreatment solution is azobisisobutyronitrile.
8. The wet skid resistant thermoplastic elastomer as claimed in claim 7, wherein said softening aid is a mixture of xylene and styrene.
9. The wet skid resistant thermoplastic elastomer of claim 8 wherein the components of said pretreatment fluid further comprise oil shale waste.
10. Process for the preparation of a wet skid-free thermoplastic elastomer according to any one of claims 1 to 9, characterized in that it comprises the following steps:
(1) uniformly mixing a styrene thermoplastic elastomer, filling oil, polypropylene, a rubber filler, tackifying resin, a peroxide crosslinking agent, a processing aid and an inorganic filler to obtain a material A; uniformly mixing the composite filler and acrylic acid to obtain a material B;
(2) and mixing the material A and the material B, uniformly stirring to obtain a mixture, and then extruding and granulating the mixture at the temperature of 160-240 ℃ to obtain the wet-type anti-slip thermoplastic elastomer.
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN115895097A (en) * 2022-12-22 2023-04-04 晋江国盛新材料科技有限公司 Foaming crosslinking thermoplastic elastomer material and application thereof
CN115895097B (en) * 2022-12-22 2024-05-17 晋江国盛新材料科技有限公司 Foaming cross-linked thermoplastic elastomer material and application thereof

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