WO2020024136A1 - Odourless coloured asphalt composition and preparation method therefor - Google Patents

Abstract

Provided in the present invention is an odourless coloured asphalt composition, made from the following components and parts by weight: 40-50 parts of base oil, 15-20 parts of petroleum resin, 20-30 parts of thermoplastic styrene-butadiene rubber, 1-2 parts of anti-ageing agent, 0.5-1 parts of tackifying auxiliary agent, 0.5-1.2 parts of odour inhibitor, and 0.5-0.8 parts of surfactant. Also provided in the present invention is a preparation method for the odourless coloured asphalt composition. By means of the action of the odour inhibitor and the surfactant, the odourless coloured asphalt composition of the present invention reduces the generation and volatilisation of asphalt fumes such as H2S, SO2, and NOX during the production and construction of coloured asphalt, achieving a significant odour elimination effect without obvious changes in asphalt performance, and being conducive to environmental protection and staff health.

Description

Net taste colored asphalt composition and preparation method thereof Technical field

The invention relates to a net taste colored asphalt composition and a preparation method thereof.

Background technique

The colored asphalt pavement has obvious effects of beautifying the road environment, better coordination with the surrounding architectural art, beautifying the city, inducing traffic, improving road traffic safety, and greatly improving the monotony of ordinary black pavement. The more it is used in areas such as new roads, squares, and traffic guidance sections of high-grade highways in iconic cities, it can reflect the characteristics and style of a country or a city. At present, colored asphalt pavements have been constructed to varying degrees in various parts of China.

However, a large amount of asphalt fume will be produced during the production and construction of colored asphalt, which will have a serious impact on the surrounding environment and endanger people's health. The flue gas contains a variety of organic substances, including carbocyclic hydrocarbons, cyclic hydrocarbon derivatives and other compounds, which have many harmful effects on human health. Asphalt smoke contains a variety of polycyclic aromatic hydrocarbons such as benzopyrene, benzoanthracene, and carbazole. "Substances", and most of them are carcinogens and strong carcinogens, most of which have a particle size of 0.1 to 1.0 μm, the smallest is only 0.01 μm, and the largest is about 10.0 μm, especially represented by 3,4-benzopyrene A variety of carcinogens. The main way of harming human health is to attach to the floating dust below 8um, which is sucked into the human body through the respiratory tract. Therefore, it is very necessary to purify and treat the asphalt fume to meet the atmospheric environmental standards.

At this stage, the treatment of asphalt flue gas mostly uses added flue gas purification devices, which can only be used to control the collection of flue gas during the production of asphalt to reduce emissions, and it is impossible to avoid the re-emission of asphalt flue gas in subsequent asphalt construction applications.

Summary of the invention

The purpose of the present invention is to overcome the above-mentioned drawbacks, and provide a net taste colored asphalt composition and a preparation method thereof, which reacts free radicals such as volatile reactive oxygen species in the colored asphalt from the source to reduce the color asphalt smoke. produce.

In order to solve the technical problems described above, the present invention adopts the following technical solutions:

A net taste colored asphalt composition composed of the following raw materials in parts by weight:

40-50 parts of base oil, 15-20 parts of petroleum resin, 20-30 parts of thermoplastic styrene-butadiene rubber, 1 part-2 parts of anti-aging agent, 0.5 parts-1 part of tackifier, 0.5-1.2 parts of odor suppressant and 0.5-0.8 parts of surfactant.

Further, the base oil is one or more of an aromatic hydrocarbon oil, a heavy oil reduced fission relubrication or a minus four hydrogenation relubrication, and KP6040.

Further, the petroleum resin is a C5 copolymerized petroleum resin or a C9 copolymerized petroleum resin.

Further, the thermoplastic styrene-butadiene rubber is a styrene-butylene-styrene block copolymer.

Further, the odor inhibitor is composed of an aldehyde compound and a carboxylic acid ester compound.

Further, the aldehyde compound is one or more of vanillin, benzaldehyde, n-heptanal, trans-2-, cis-6-nonadienal, trans-2-hexenal, and hexadecanal. .

Further, the acid ester compounds are methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, n-pentyl acetate, amyl acetate, benzyl acetate, phenyl acetate, ethyl formate, and ethyl acetate. , One or more of ethyl propionate, ethyl butyrate, ethyl valerate, ethyl stearate, ethyl phenyl acetate, ethyl benzoate, allyl hexanoate.

Further, the surfactant is a zwitterionic surfactant, and the zwitterionic surfactant is an alkylimidazoline-type halide salt or an alkylbetaine halide salt; wherein the alkylimidazole The phthaloline halide salt includes C12 to C18 alkyl imidazoline halide phosphate, C12 to C18 alkyl imidazoline halide phosphate, C12 to C18 alkyl imidazoline halide sodium sulfite, and C12 to C18 alkyl imidazoline halide. Potassium sulfite, sodium C12-C18 alkyl imidazoline halide sodium sulfate, and potassium C12-C18 alkyl imidazoline halide sulfate; the alkyl betaine halide salt includes C12-C18 alkyl amide propyl betaine Sodium halide phosphate, C12 to C18 alkylamidepropyl betaine halide potassium phosphate, C12 to C18 alkylamidepropyl betaine halide sodium sulfite, C12 to C18 alkylamidepropyl betaine halide potassium sulfite, C12 ～ C18 alkylamidepropyl betaine halide sodium sulfate and C12 ～ C18 alkylamidepropyl betaine halide sodium sulfate.

A method for preparing a net taste colored asphalt composition is as follows:

(I): adding a base oil according to the weight percentage distribution ratio, heating to 165 ° C to 175 ° C, adding a thermoplastic styrene-butadiene rubber, stirring and melting;

(II) After complete dissolution, petroleum resin, anti-aging agent, tackifier, odor suppressant and surfactant are added in order, and after mixing and mixing, it develops for 1 hour, and the net-color colored asphalt composition is prepared.

The beneficial effect of the pure-color colored asphalt composition of the present invention is that the strong chemical bond in the odor inhibitor compound has a strong ability to capture free radicals in the asphalt production process, effectively locks harmful substances in the colored asphalt, and inhibits H2S, SO2, Generation and volatilization of asphalt fume such as NOX; meanwhile, it effectively disperses odor inhibitors and various raw materials in asphalt under the action of surfactants, improves the storage stability of colored asphalt, and enhances the effect of odor suppression; and significantly reduces the interfacial energy of asphalt , Improve the ease of production and construction of asphalt, reduce the temperature required for asphalt production and construction, and further reduce the generation and volatilization of asphalt smoke.

detailed description

The technical solution of the present invention will be described in detail below with reference to the embodiments.

Example 1

A net taste colored asphalt composition, according to a percentage distribution by weight, 40 parts of aromatic oil, 15 parts of C9 petroleum resin, 20 parts of styrene-butylene-styrene segmented copolymer, 1 part of anti-aging agent, 0.5 part Tackifier, 0.5 part odor inhibitor and 0.8 part surfactant.

The steps for preparing a colored asphalt mixture are as follows:

(1) adding 40 parts of aromatic oil according to the weight percentage, heating to 165 ° C to 175 ° C, adding 20 parts of styrene-butylene-styrene block copolymer and stirring to melt;

(2) After completely dissolving, add 15 parts of C9 petroleum resin, 1 part of anti-aging agent, 0.5 part of tackifier, 0.5 part of odor suppressant and 0.8 part of surfactant. After being stirred and mixed uniformly, it develops for 1 hour to prepare a net taste colored asphalt composition. See Table 2 for the general technical indicators for detecting colored asphalt.

Example 2

A net taste colored asphalt composition, according to a weight percentage distribution ratio, 45 parts of heavy oil reduced fission and rewetting, 18 parts of C9 petroleum resin, 30 parts of styrene-butylene-styrene block copolymer, and 2 parts of Aging agent, 0.5 part tackifier, 0.5 part odor suppressant and 0.5 part surfactant.

The steps for preparing a colored asphalt mixture are as follows:

(1) adding 45 parts of heavy oil in accordance with the weight percentage to reduce fission and rewetting, and heating and heating to 165 ° C to 175 ° C, adding 20 parts of styrene-butylene-styrene block copolymer to stir and melt;

(2) After completely dissolving, add 18 parts of C9 petroleum resin, 2 parts of anti-aging agent, 1 part of tackifier, 1 part of odor suppressant and 0.5 part of surfactant. After being stirred and mixed uniformly, it develops for 1 hour to prepare a net taste colored asphalt composition. See Table 2 for the general technical indicators for detecting colored asphalt.

Example 3

A net taste colored asphalt composition. According to the weight percentage distribution ratio, 50 parts of heavy oil is less fission-heavy, 20 parts of C5 petroleum resin, 30 parts of styrene-butylene-styrene block copolymer, and 1.8 parts of anti-fiber Aging agent, 0.7 part of tackifier, 0.9 part of odor suppressant and 0.5 part of surfactant.

The steps for preparing a net taste colored asphalt composition are as follows:

(1) adding 50 parts of heavy oil to reduce fission and rewetting according to the weight percentage, adding 20 parts of styrene-butylene-styrene block copolymer under heating under the condition of heating to 165 ° C to 175 ° C;

(2) After completely dissolving, add 20 parts of C5 petroleum resin, 1.8 parts of anti-aging agent, 0.7 part of tackifier, 0.9 part of odor suppressant and 0.7 part of surfactant. After stirring and mixing uniformly, it develops for 1 hour to prepare a net-color colored asphalt composition. See Table 2 for the general technical indicators for detecting colored asphalt.

Example 4

A net taste colored asphalt composition, according to a weight percentage distribution ratio, 48 parts minus tetrahydrorewetting, 20 parts of C5 petroleum resin, 25 parts of styrene-butylene-styrene block copolymer, and 1.5 parts of anti-aging Agent, 0.8 part of tackifier, 1 part of odor suppressant and 0.6 part of surfactant.

The steps for preparing a net taste colored asphalt composition are as follows:

(1) Add 48 parts minus four hydrogenated re-moisturizers according to the weight percentage, add 25 parts of styrene-butylene-styrene block copolymer and heat under heating at 165 ° C to 175 ° C;

(2) After complete dissolution, add 1.5 parts of anti-aging agent, 0.8 parts of tackifier, 1 part of odor suppressant and 0.6 part of surfactant. After being stirred and mixed uniformly, it develops for 1 hour to prepare a net taste colored asphalt composition. That is, a net taste colored asphalt composition is prepared; the general technical indicators for detecting colored asphalt are shown in Table 2.

Comparative Example 1 is a commercially available 70 # colored asphalt cement, and its performance indicators are shown in Table 2.

Examples 1-4 and Comparative Example 1 were evaluated with reference to the six-stage classification method of malodor intensity in Japan, and the results are shown in Table 3.

Table 1 Japan's malodor intensity level

strength	index
0	Tasteless
1	Can barely smell
2	Smell is weak but can distinguish nature
3	Easily smell
4	Strong smell
5	Unbearable strong smell

Table 2 Asphalt performance index

project	Example 1	Comparative Example 1	Example 2	Example 3	Example 4
Softening point / ℃	62.5	56.8	68.3	65.2	66.8
Penetration / 0.1mm	66	68	61	63	67
Ductility at 10 ℃ / cm	58.1	48.6	60.2	57.4	62.5
135 ℃ viscosity	0.420	0.489	0.436	0.444	0.457

Table 3 Evaluation of malodor intensity

Odor level	Example 1	Comparative Example 1	Example 2	Example 3	Example 4
strength	1	3	1	1	1

As can be seen from Table 2 above, after adding the odor suppressant and surfactant to the asphalt, the high-temperature performance of the color asphalt composition of the present invention is significantly improved compared to the commercially available conventional color asphalt cement. Relevant requirements in the "Technical Specifications for Engineering Construction" (JTG F40-2004), in which the viscosity of the examples at 135 ° C is lowered to a certain extent compared with the comparative example, indicating that the composition of the present invention can improve the ease of production and construction of asphalt.

It can be seen from the malodor intensity evaluation table in Table 3 that the malodor intensity level of the net-color colored asphalt composition of the present invention is significantly lower than that of conventional asphalt, and the odor of asphalt is significantly eliminated by the technology of the present invention.

The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without deviating from the concept of the present invention, several simple deductions or replacements can be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims (9)

1. A net taste colored asphalt composition composed of the following raw materials in parts by weight:

   40-50 parts of base oil, 15-20 parts of petroleum resin, 20-30 parts of thermoplastic styrene-butadiene rubber, 1 part-2 parts of anti-aging agent, 0.5 parts-1 part of tackifier, 0.5-1.2 parts of odor suppressant and 0.5-0.8 parts of surfactant.
2. The net taste colored asphalt composition according to claim 1, wherein the base oil is one or more of aromatic oil, heavy oil minus two fission reheavy or tetrahydroreheavy, and KP6040.
3. The net taste colored asphalt composition according to claim 1, wherein the petroleum resin is a C5 copolymerized petroleum resin or a C9 copolymerized petroleum resin.
4. The net taste colored asphalt composition according to claim 1, wherein the thermoplastic styrene-butadiene rubber is a styrene-butylene-styrene block copolymer.
5. The net taste colored asphalt composition according to claim 1, wherein the odor suppressant is composed of an aldehyde compound and a carboxylic acid ester compound.
6. The net taste colored asphalt composition according to claim 5, wherein the aldehyde compound is vanillin, benzaldehyde, n-heptanal, trans-2-, cis-6-nonadienal, trans-2 -One or more of hexenal and hexadehyde.
7. The net taste colored asphalt composition according to claim 5, wherein the acid ester compound is methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, n-pentyl acetate, amyl acetate, acetic acid Benzyl ester, phenyl acetate, ethyl formate, ethyl acetate, ethyl propionate, ethyl butyrate, ethyl valerate, ethyl stearate, ethyl phenyl acetate, ethyl benzoate, hexanoic acid One or more of allyl esters.
8. The net taste colored asphalt composition according to claim 1, wherein the surfactant is a zwitterionic surfactant, and the zwitterionic surfactant is an alkylimidazoline halide salt or an alkyl Betaine halide salt; wherein the alkylimidazoline type halide salt includes sodium C12-C18 alkylimidazoline halide phosphate, potassium C12-C18 alkylimidazoline halide phosphate, and C12-C18 alkyl Imidazoline halide sodium sulfite, C12-C18 alkyl imidazoline halide potassium sulfite, C12-C18 alkyl imidazoline halide sodium sulfate, and C12-C18 alkyl imidazoline halide potassium sulfate; the alkyl betaine is halogenated The salts include C12 ～ C18 alkylamidepropyl betaine halide sodium phosphate, C12 ～ C18 alkylamidepropyl betaine halide potassium phosphate, C12 ～ C18 alkylamidepropyl betaine halide sodium sulfite, and C12 ～ C18 alkyl amide propyl betaine halide potassium sulfite, C12 to C18 alkyl amide propyl betaine halide sodium sulfate, and C12 to C18 alkyl amide propyl betaine halide potassium sulfate.
9. The method for preparing a net taste colored asphalt composition according to claim 1, wherein the steps are as follows:

   (I): adding a base oil according to the weight percentage distribution ratio, heating to 165 ° C to 175 ° C, adding a thermoplastic styrene-butadiene rubber, stirring and melting;

   (II) After complete dissolution, petroleum resin, anti-aging agent, tackifier, odor suppressant and surfactant are added in order, and after mixing and mixing, it develops for 1 hour, and the net-color colored asphalt composition is prepared.