CN111100386A - Environment-friendly anti-cracking road cone and preparation method thereof - Google Patents
Environment-friendly anti-cracking road cone and preparation method thereof Download PDFInfo
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- CN111100386A CN111100386A CN202010003278.XA CN202010003278A CN111100386A CN 111100386 A CN111100386 A CN 111100386A CN 202010003278 A CN202010003278 A CN 202010003278A CN 111100386 A CN111100386 A CN 111100386A
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- 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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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Abstract
The invention discloses an environment-friendly anti-cracking road cone and a preparation method thereof, which relate to the technical field of traffic facilities, and the road cone comprises the following raw materials in parts by weight: 90-110 parts of ethylene propylene diene monomer; 5-8 parts of zinc oxide; 2-4 parts of stearic acid; 5-6 parts of a tackifier; 0.6-1 part of coupling agent; 20-35 parts of a reinforcing agent; 12-14 parts of a vulcanizing agent; 0.5-1 part of anti-aging agent; 2-4 parts of a dispersing agent. The ethylene propylene diene monomer has good comprehensive properties: high dynamic mechanical performance, weather resistance, corrosion resistance and ozone resistance. The ethylene propylene diene monomer is used as a raw material and is matched with the addition of the auxiliary agent, so that good ageing resistance can be provided for the road cone, and the road cone has the advantage of being difficult to crack.
Description
Technical Field
The invention relates to the technical field of traffic facilities, in particular to an environment-friendly anti-cracking road cone and a preparation method thereof.
Background
The road cone is also called a roadblock and is used for being placed in the middle of a road, in dangerous areas, on construction road sections of the road and the like to temporarily separate traffic flows and guide traffic, and the road cone also plays a role in reminding a driver.
In the prior art, the road cone is generally formed by extruding a uniformly mixed mixture into a mold through certain pressure after raw materials such as a polyvinyl chloride material, a color master defoamer and the like are mixed according to a certain proportion, and performing integral mold pressing. In order to improve the stability and the identification degree of the road cone, a sand strip and a reflective taper sleeve are added into the prepared road cone shell, so that the applicability of the road cone is improved.
The cracks are a common defect of plastic products, and the main cause of the cracks is caused by stress deformation, mainly including residual stress, external stress and stress deformation generated by external environment, so that the road cone in the prior art is easy to crack and needs to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an environment-friendly anti-cracking road cone and a preparation method thereof, and the environment-friendly anti-cracking road cone has the advantage of good anti-cracking performance.
In order to achieve the purpose, the invention provides the following technical scheme:
the environment-friendly anti-cracking road cone comprises the following raw materials in parts by weight:
90-110 parts of ethylene propylene diene monomer;
5-8 parts of zinc oxide;
2-4 parts of stearic acid;
5-6 parts of a tackifier;
0.6-1 part of coupling agent;
20-35 parts of a reinforcing agent;
12-14 parts of a vulcanizing agent;
0.5-1 part of anti-aging agent;
2-4 parts of a dispersing agent.
By adopting the technical scheme, the ethylene propylene diene monomer is prepared by copolymerizing ethylene, propylene and a small amount of non-conjugated diene by adopting a solution method or a suspension method, and the molecular chain structure of the ethylene propylene diene monomer is characterized in that the molecular chain does not contain unsaturated bonds basically, the steric hindrance of substituent groups is small, the flexibility of the molecular chain is good, the ethylene propylene diene monomer is a saturated non-crystalline rubber, and the molecular structure determines that the ethylene propylene diene monomer has good comprehensive performance: high dynamic mechanical performance, weather resistance, corrosion resistance and ozone resistance. The ethylene propylene diene monomer is used as a raw material, so that good ageing resistance can be provided for the road cone, and the road cone has the advantage of being difficult to crack.
The ethylene propylene diene monomer has the defect of low vulcanization speed, the zinc oxide has the function of a vulcanization accelerator, the vulcanization activity of the ethylene propylene diene monomer can be improved, the vulcanization speed of the ethylene propylene diene monomer is improved, and the zinc oxide has the function of a reinforcing agent, so that the tear resistance and the strength of a system can be improved.
The ethylene propylene diene monomer has the defect of poor adhesion with other materials, and the adhesion between the ethylene propylene diene monomer and other materials can be effectively improved by adding the tackifier and the coupling agent, so that the overall matching effect is improved, and further, the generation of cracks is avoided.
Further, 15-25 parts of carbon black and 5-10 parts of white carbon black are adopted as the reinforcing agent.
Through adopting above-mentioned technical scheme, through the addition of carbon black and white carbon black, can provide good reinforcement effect, improve the intensity of way awl.
Further, the tackifier is water-based acrylic resin.
By adopting the technical scheme, the water-based acrylic resin has good tackifying effect, improves the adhesiveness between the ethylene propylene diene monomer and other materials, and has the advantages of low price, safe use, environmental protection, no pollution and the like.
Further, the coupling agent adopts a material with the weight portion ratio of 1: 1 coupling agent KH-550 and coupling agent KH-560.
By adopting the technical scheme, KH-550 can be used as an adhesion promoter of the aqueous acrylic resin, so that the viscosity of the aqueous acrylic resin is improved, and the tackifying effect of the aqueous acrylic resin is improved. KH-550 and KH-560 are used as coupling agents, so that the cohesiveness between the ethylene propylene diene monomer and the reinforcing agent can be improved, and the stability of the system is improved.
The KH-550 contains amino groups which are very easy to react with unsaturated bonds in a system to influence the stability of the system, and the KH-560 contains epoxy groups which can react with the amino groups in the KH-550 to generate a cross-linked network structure, so that the structural strength of the system is further improved.
Further, the vulcanizing agent is prepared from the following raw materials in parts by weight of 1: 1 of accelerator OTTBS and accelerator TT-80.
By adopting the technical scheme, the accelerator OTTBS and the accelerator TT-80 both have the effects of a vulcanizing agent and an accelerator and can be mutually cooperated to enhance the vulcanizing effect. Meanwhile, compared with the most widely used sulfenamide accelerators in the prior art, the secondary amine group of the sulfenamide accelerator can generate carcinogenic nitrosamine in the vulcanization process, and potential danger exists for human health. The accelerator OTTBS and the accelerator TT-80 both have higher molecular weight, very low volatility, are very stable at vulcanization temperature and do not generate nitrosamine.
Further, the anti-aging agent is anti-aging agent RD.
By adopting the technical scheme, the anti-aging agent RD is suitable for an ethylene propylene diene monomer system so as to further improve the anti-aging performance and the crack resistance of the ethylene propylene diene monomer system.
Further, the dispersant is PVP-K30.
By adopting the technical scheme, PVP-K30 is a nonionic surfactant, and can improve the dispersibility of the system, so that the overall matching effect of each component is improved.
The antioxidant RD is a chain-breaking antioxidant, which has a reactive N-H functional group in the molecular structure and can compete with a polymer for chain growth free radicals R and RO in the oxidation inhibiting process2To interrupt the chain reaction, but in the case of transfer of hydrogen atoms to peroxidic radicals, at least one molecular hydroperoxide is formed and PVP-K30 can react with this hydroperoxide, thereby further reducing the aging rate and having a synergistic effect on the aging resistance of antioxidant RD.
The invention also aims to provide a preparation method of the environment-friendly anti-cracking road cone, which comprises the following steps:
s1, putting the ethylene propylene diene monomer rubber into an internal mixer for plastication for 5-10min to obtain rubber master batch;
s2, adding the rubber master batch into a rubber mixing mill, and mixing zinc oxide, carbon black and white carbon black for 1-2 min; s3, adding stearic acid, water-based acrylic resin, a coupling agent KH-550, KH-560, an accelerator OTTBS, an accelerator TT-80, an anti-aging agent RD and PVP-K30, and mixing for 15-20min to obtain a rubber compound;
s4, putting the rubber compound into a preheated mold for mold pressing, and simultaneously placing the mold on a flat vulcanizing machine for vulcanization molding, wherein the vulcanization temperature is 165-175 ℃;
and S5, cooling and opening the mold to obtain an undecorated finished product.
In conclusion, the invention has the following beneficial effects:
1. the ethylene propylene diene rubber is prepared by copolymerizing ethylene, propylene and a small amount of non-conjugated diene by a solution method or a suspension method, and the molecular chain structure of the ethylene propylene diene rubber is characterized in that the molecular chain does not contain unsaturated bonds basically, the steric hindrance of a substituent group is small, the flexibility of the molecular chain is good, the ethylene propylene diene rubber is saturated non-crystalline rubber, and the molecular structure determines that the ethylene propylene diene rubber has good comprehensive performance: high dynamic mechanical performance, weather resistance, corrosion resistance and ozone resistance. The ethylene propylene diene monomer is used as a raw material, so that good ageing resistance can be provided for the road cone, and the road cone has the advantage of being difficult to crack;
2. the ethylene propylene diene monomer has the defect of low vulcanization speed, the zinc oxide has the function of a vulcanization accelerator, the vulcanization activity of the ethylene propylene diene monomer can be improved, the vulcanization speed of the ethylene propylene diene monomer is improved, and the zinc oxide has the function of a reinforcing agent, so that the tear resistance and the strength of a system can be improved. The ethylene propylene diene monomer has the defect of poor adhesion with other materials, and the adhesion between the ethylene propylene diene monomer and other materials can be effectively improved by adding the tackifier and the coupling agent, so that the overall matching effect is improved, and further the generation of cracks is avoided;
3. the water-based acrylic resin has good tackifying effect, improves the adhesiveness between the ethylene propylene diene monomer and other materials, and has the advantages of low price, safe use, environmental protection, no pollution and the like;
4. KH-550 can be used as an adhesion promoter for aqueous acrylic resin, and can improve the viscosity and tackifying effect of the aqueous acrylic resin. KH-550 and KH-560 are used as coupling agents, so that the cohesiveness between the ethylene propylene diene monomer and the reinforcing agent can be improved, and the stability of the system is improved. The KH-550 contains amino groups, which are very easy to react with unsaturated bonds in the system to influence the stability of the system, and the KH-560 contains epoxy groups, which can react with the amino groups in the KH-550 to generate a cross-linked network structure, so that the structural strength of the system is further improved;
5. both the accelerator OTTBS and the accelerator TT-80 have the effects of a vulcanizing agent and an accelerator, and can cooperate with each other to enhance the vulcanization effect. Meanwhile, compared with the most widely used sulfenamide accelerators in the prior art, the secondary amine group of the sulfenamide accelerator can generate carcinogenic nitrosamine in the vulcanization process, and potential danger exists for human health. The accelerator OTTBS and the accelerator TT-80 both have higher molecular weight, very low volatility, are very stable at the vulcanization temperature and do not generate nitrosamine;
6. PVP-K30 is a nonionic surfactant, and can improve the dispersibility of the system and further improve the overall matching effect of each component. The antioxidant RD is a chain-breaking antioxidant, which has a reactive N-H functional group in the molecular structure and can compete with a polymer for chain growth free radicals R and RO in the oxidation inhibiting process2So as to interrupt the chain reaction, but when hydrogen atoms are transferred to peroxide free radicals, at least one molecule of hydroperoxide is generated in the reaction, and PVP-K30 can react with the hydroperoxide, thereby further reducing the aging rate and having synergistic effect on the aging resistance of the anti-aging agent RD.
Drawings
FIG. 1 is a flow chart of a method provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples.
Examples
Example 1
An environment-friendly anti-cracking road cone comprises the following raw material components in parts by weight as shown in Table 1.
Wherein the ethylene propylene diene monomer is 4050 type, the tackifier is aqueous acrylic resin, the coupling agent is KH-550 and KH-560, the vulcanizing agent is OTTBS and TT-80, the anti-aging agent is RD, and the dispersant is PVP-K30.
As shown in fig. 1, the preparation method of the environment-friendly road cone comprises the following steps:
s1, putting the ethylene propylene diene monomer rubber into an internal mixer for plastication for 5-10min to obtain rubber master batch;
s2, adding the rubber master batch into a rubber mixing mill, and mixing zinc oxide, carbon black and white carbon black for 1-2 min; s3, adding stearic acid, water-based acrylic resin, a coupling agent KH-550, KH-560, an accelerator OTTBS, an accelerator TT-80, an anti-aging agent RD and PVP-K30, and mixing for 15-20min to obtain a rubber compound;
s4, putting the rubber compound into a preheated mold for mold pressing, and simultaneously placing the mold on a flat vulcanizing machine for vulcanization molding, wherein the vulcanization temperature is 165-175 ℃;
s5, cooling and opening the die to obtain an undecorated finished product;
and S6, sleeving a reflective taper sleeve to obtain a finished road taper product.
Example 2
An environment-friendly anti-cracking road cone comprises the following raw material components in parts by weight as shown in Table 1.
Wherein the ethylene propylene diene monomer is 4050 type, the tackifier is aqueous acrylic resin, the coupling agent is KH-550 and KH-560, the vulcanizing agent is OTTBS and TT-80, the anti-aging agent is RD, and the dispersant is PVP-K30.
The preparation method of the environment-friendly road cone comprises the following steps:
s1, putting the ethylene propylene diene monomer rubber into an internal mixer for plastication for 5-10min to obtain rubber master batch;
s2, adding the rubber master batch into a rubber mixing mill, and mixing zinc oxide, carbon black and white carbon black for 1-2 min; s3, adding stearic acid, water-based acrylic resin, a coupling agent KH-550, KH-560, an accelerator OTTBS, an accelerator TT-80, an anti-aging agent RD and PVP-K30, and mixing for 15-20min to obtain a rubber compound;
s4, putting the rubber compound into a preheated mold for mold pressing, and simultaneously placing the mold on a flat vulcanizing machine for vulcanization molding, wherein the vulcanization temperature is 165-175 ℃;
s5, cooling and opening the die to obtain an undecorated finished product;
and S6, sleeving a reflective taper sleeve to obtain a finished road taper product.
Example 3
An environment-friendly anti-cracking road cone comprises the following raw material components in parts by weight as shown in Table 1.
Wherein the ethylene propylene diene monomer is 4050 type, the tackifier is aqueous acrylic resin, the coupling agent is KH-550 and KH-560, the vulcanizing agent is OTTBS and TT-80, the anti-aging agent is RD, and the dispersant is PVP-K30.
The preparation method of the environment-friendly road cone comprises the following steps:
s1, putting the ethylene propylene diene monomer rubber into an internal mixer for plastication for 5-10min to obtain rubber master batch;
s2, adding the rubber master batch into a rubber mixing mill, and mixing zinc oxide, carbon black and white carbon black for 1-2 min; s3, adding stearic acid, water-based acrylic resin, a coupling agent KH-550, KH-560, an accelerator OTTBS, an accelerator TT-80, an anti-aging agent RD and PVP-K30, and mixing for 15-20min to obtain a rubber compound;
s4, putting the rubber compound into a preheated mold for mold pressing, and simultaneously placing the mold on a flat vulcanizing machine for vulcanization molding, wherein the vulcanization temperature is 165-175 ℃;
s5, cooling and opening the die to obtain an undecorated finished product;
and S6, sleeving a reflective taper sleeve to obtain a finished road taper product.
Example 4
An environment-friendly anti-cracking road cone comprises the following raw material components in parts by weight as shown in Table 1.
Wherein, the ethylene propylene diene monomer adopts a model number of 4050, the tackifier adopts water-based acrylic resin, the coupling agent adopts KH-550 and KH-560, the vulcanizing agent adopts an accelerator OTTBS and an accelerator TT-80, the anti-aging agent adopts an anti-aging agent EPDM, and the dispersing agent adopts PVP-K30.
The preparation method of the environment-friendly road cone comprises the following steps:
s1, putting the ethylene propylene diene monomer rubber into an internal mixer for plastication for 5-10min to obtain rubber master batch;
s2, adding the rubber master batch into a rubber mixing mill, and mixing zinc oxide, carbon black and white carbon black for 1-2 min; s3, adding stearic acid, water-based acrylic resin, a coupling agent KH-550, KH-560, an accelerator OTTBS, an accelerator TT-80, an anti-aging agent EPDM and PVP-K30, and mixing for 15-20min to obtain a rubber compound;
s4, putting the rubber compound into a preheated mold for mold pressing, and simultaneously placing the mold on a flat vulcanizing machine for vulcanization molding, wherein the vulcanization temperature is 165-175 ℃;
s5, cooling and opening the die to obtain an undecorated finished product;
and S6, sleeving a reflective taper sleeve to obtain a finished road taper product.
Example 5
An environment-friendly anti-cracking road cone comprises the following raw material components in parts by weight as shown in Table 1.
Wherein, the ethylene propylene diene monomer adopts a model number of 4050, the tackifier adopts water-based acrylic resin, the coupling agent adopts KH-550 and KH-560, the vulcanizing agent adopts an accelerator OTTBS and an accelerator TT-80, the anti-aging agent adopts an anti-aging agent RD, and the dispersing agent adopts sodium dodecyl sulfate.
The preparation method of the environment-friendly road cone comprises the following steps:
s1, putting the ethylene propylene diene monomer rubber into an internal mixer for plastication for 5-10min to obtain rubber master batch;
s2, adding the rubber master batch into a rubber mixing mill, and mixing zinc oxide, carbon black and white carbon black for 1-2 min; s3, adding stearic acid, water-based acrylic resin, a coupling agent KH-550, KH-560, an accelerator OTTBS, an accelerator TT-80, an anti-aging agent RD and sodium dodecyl sulfate, and mixing for 15-20min to obtain a rubber compound;
s4, putting the rubber compound into a preheated mold for mold pressing, and simultaneously placing the mold on a flat vulcanizing machine for vulcanization molding, wherein the vulcanization temperature is 165-175 ℃;
s5, cooling and opening the die to obtain an undecorated finished product;
and S6, sleeving a reflective taper sleeve to obtain a finished road taper product.
Performance test
Weather resistance (crack resistance) test
A sample with the thickness of 2.0 +/-0.2 mm, the length of 50 +/-0.2 mm and the width of 10 +/-0.2 mm is cut by a standard cutting knife, the cutting direction of the sample is the rolling direction of the sample, the sample is fixed on a sample stretching frame after being stretched to 20 percent of elongation, the mounted sample is exposed to the atmospheric environment and direct sunlight for aging test, the exposed surface of the sample faces south, the inclination angle of the sample and the horizontal plane is 45 degrees, the grade of the surface crack width of the sample is recorded every 4 months, the total recording time is 12 months, the grade of the surface crack width of the sample is recorded as shown in table 3, and the grade of the surface crack of the sample is classified as shown in table 2.
TABLE 1 raw materials formulation table
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Ethylene propylene diene monomer | 90 | 100 | 110 | 100 | 100 |
| Zinc oxide | 5 | 6 | 8 | 6 | 6 |
| Stearic acid | 2 | 3 | 4 | 3 | 3 |
| Tackifier | 5 | 5 | 6 | 5 | 5 |
| KH-550 | 0.3 | 0.4 | 0.5 | 0.4 | 0.4 |
| KH-560 | 0.3 | 0.4 | 0.5 | 0.4 | 0.4 |
| Carbon black | 15 | 20 | 25 | 20 | 20 |
| White carbon black | 5 | 8 | 10 | 8 | 8 |
| Accelerator OTTBS | 6 | 6 | 7 | 6 | 6 |
| Accelerant TT-80 | 6 | 6 | 7 | 6 | 6 |
| Anti-aging agent | 0.5 | 0.7 | 1.0 | 0.7 | 0.7 |
| Dispersing agent | 2 | 3 | 4 | 3 | 3 |
TABLE 2 cracking rating Table
| Cracking rating | Crack characteristics and apparent characteristics | Width of split (mm) |
| 0 | Has no crack, and can not be seen with magnifying glass of 20 times or less | 0 |
| 1 | Slight crack, tiny crack, easy to see with magnifying glass, and serious to see with naked eye | ＜0.1 |
| 2 | Obvious cracking, obvious cracks and small quantity | ＜0.2 |
| 3 | Obvious cracking, obvious cracks and wide development | ＜0.3 |
| 4 | Severe cracking, coarse cracks, spreading over the surface and deep into the interior | ＜0.4 |
TABLE 3 testing table for crack grade
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Crack rating/4 months | 1 | 1 | 1 | 2 | 2 |
| Crack rating/8 months | 2 | 2 | 2 | 3 | 3 |
| Crack rating/12 months | 3 | 3 | 3 | 4 | 4 |
As can be seen from Table 3, in examples 4 and 5, PVP-K30 can cooperate with antioxidant RD to improve the anti-aging performance, and further improve the anti-cracking performance of the road cone.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, 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 invention.
Claims (8)
1. The utility model provides a cracking way awl is prevented to environment-friendly which characterized in that: the raw materials comprise the following components in parts by weight,
90-110 parts of ethylene propylene diene monomer;
5-8 parts of zinc oxide;
2-4 parts of stearic acid;
5-6 parts of a tackifier;
0.6-1 part of coupling agent;
20-35 parts of a reinforcing agent;
12-14 parts of a vulcanizing agent;
0.5-1 part of anti-aging agent;
2-4 parts of a dispersing agent.
2. The environment-friendly anti-cracking road cone as claimed in claim 1, wherein: the reinforcing agent adopts 15-25 parts of carbon black and 5-10 parts of white carbon black.
3. The environment-friendly anti-cracking road cone as claimed in claim 1, wherein: the tackifier is water-based acrylic resin.
4. The environment-friendly anti-cracking road cone as claimed in claim 3, wherein: the coupling agent is prepared from the following raw materials in parts by weight of 1: 1 coupling agent KH-550 and coupling agent KH-560.
5. The environment-friendly anti-cracking road cone as claimed in claim 1, wherein: the vulcanizing agent is prepared from the following raw materials in parts by weight of 1: 1 of accelerator OTTBS and accelerator TT-80.
6. The environment-friendly anti-cracking road cone as claimed in claim 1, wherein: the anti-aging agent is anti-aging agent RD.
7. The environment-friendly anti-cracking road cone as claimed in claim 4, wherein: the dispersing agent adopts PVP-K30.
8. The preparation method of the environment-friendly anti-cracking road cone according to any one of claims 1 to 7, which is characterized in that: comprises the following steps of (a) carrying out,
s1, putting the ethylene propylene diene monomer rubber into an internal mixer for plastication for 5-10min to obtain rubber master batch;
s2, adding the rubber master batch into a rubber mixing mill, and mixing zinc oxide, carbon black and white carbon black for 1-2 min; s3, adding stearic acid, water-based acrylic resin, a coupling agent KH-550, KH-560, an accelerator OTTBS, an accelerator TT-80, an anti-aging agent RD and PVP-K30, and mixing for 15-20min to obtain a rubber compound;
s4, putting the rubber compound into a preheated mold for mold pressing, and simultaneously placing the mold on a flat vulcanizing machine for vulcanization molding, wherein the vulcanization temperature is 165-175 ℃;
and S5, cooling and opening the mold to obtain an undecorated finished product.
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| CN115304869A (en) * | 2022-07-26 | 2022-11-08 | 高科橡塑工业有限公司 | Ethylene propylene diene monomer rubber compound for high-adhesion and high-tear-resistance rubber roll and preparation method thereof |
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