阅读说明：本技术 一种环保净味沥青改性剂及其改性沥青 (Environment-friendly odorless asphalt modifier and modified asphalt thereof ) 是由 陈佩 张珊珊 于 2020-06-28 设计创作，主要内容包括：本发明提供一种环保净味沥青改性剂,由以下组份及重量份制成：醛类化合物10-25份；羧酸酯类化合物10-25份；界面活性剂0.2-1份；植物精油及盐类化合物1-5份；基础油40-60份；本发明还提供了一种环保净味沥青改性剂的制备方法及其改性沥青。本发明的环保净味沥青改性剂通过与沥青中产生异味化合物反应,降低沥青生产、施工过程中H<Sub>2</Sub>S,SO<Sub>2</Sub>,NO<Sub>X</Sub>等沥青烟气挥发,达到显著气味消除效果并且沥青性能不发生明显变化；此外本发明环保净味沥青改性剂,环保,安全性好,制备工艺简单。(The invention provides an environment-friendly odorless asphalt modifier which is prepared from the following components in parts by weight: 10-25 parts of aldehyde compound; 10-25 parts of carboxylic ester compounds; 0.2-1 part of a surfactant; 1-5 parts of plant essential oil and salt compounds; 40-60 parts of base oil; the invention also provides a preparation method of the environment-friendly odorless asphalt modifier and modified asphalt thereof. According to the inventionThe environment-friendly odor-free asphalt modifier can reduce H in the production and construction processes of asphalt by reacting with odor compounds generated in the asphalt 2 S,SO 2 ,NO X When the asphalt smoke gas volatilizes, the obvious odor eliminating effect is achieved, and the asphalt performance is not obviously changed; in addition, the environment-friendly odorless asphalt modifier disclosed by the invention is environment-friendly, good in safety and simple in preparation process.)

1. An environment-friendly odor-free asphalt modifier is characterized in that: the composite material consists of the following raw materials in parts by weight:

10-25 parts of aldehyde compound;

10-25 parts of an acid ester compound;

0.2-1 part of complexing agent;

1-5 parts of plant essential oil and salt compounds;

40-60 parts of base oil.

2. The environment-friendly odor-free asphalt modifier according to claim 1, characterized in that: the aldehyde compound is one or more of vanillin, benzaldehyde, n-heptanal, trans-2-, cis-6-nonadienal, trans-2-hexenal and hexadecanal.

3. The environment-friendly odor-free asphalt modifier according to claim 1, characterized in that: the acid ester compound is one or more of methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, n-amyl acetate, benzyl acetate, phenyl acetate, ethyl formate, ethyl acetate, ethyl propionate, ethyl butyrate, ethyl valerate, ethyl stearate, ethyl phenyl acetate, ethyl benzoate and allyl hexanoate.

4. The environment-friendly odor-free asphalt modifier according to claim 1, characterized in that: the complexing agent is a zwitterionic surfactant, and the zwitterionic surfactant is alkyl imidazoline type halide acid salt or alkyl betaine halide acid salt.

5. The environment-friendly odor-free asphalt modifier according to claim 1, characterized in that: the plant essential oil and salt compound is one or more of oleum Camelliae Japonicae, oleum Rosae Rugosae, flos Jasmini sambac, flos Orchidis Miquelianae, herba Cymbopogonis Citrari oil and zinc ricinoleate.

6. The environment-friendly odor-free asphalt modifier according to claim 1, characterized in that: the base oil is one or more of aromatic oil, vacuum residue oil and paraffin oil.

7. The method for preparing the environment-friendly odorless asphalt modifier according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:

(1) weighing 40-60 parts of base oil by weight, and heating to 70-85 ℃ in a reaction kettle;

(2) adding aldehyde compound, acid ester compound, plant essential oil and salt compound into the base oil, starting vacuum device, mechanically stirring, and stirring for 30-40 min;

(3) and (3) controlling the temperature to be reduced to 30-45 ℃, closing the vacuum device, adding the surfactant, continuously stirring for 10-15min, and cooling to room temperature to obtain the environment-friendly odorless asphalt modifier.

8. The preparation method of the environment-friendly odorless asphalt modifier according to claim 7, characterized in that: the vacuum degree of the vacuum device is 10-30 Pa.

9. The clean modified asphalt prepared by the environment-friendly clean asphalt modifier according to any one of claims 1 to 8, characterized in that: the weight ratio of the environment-friendly odorless asphalt modifier to the asphalt is 1: 600-900.

10. The neat modified asphalt of claim 9, wherein: the asphalt is common petroleum asphalt or polymer modified asphalt.

Technical Field

The invention relates to an environment-friendly odorless asphalt modifier and modified asphalt thereof.

Background

It is known that asphalt is a product obtained by distilling petroleum, and a large amount of harmful gases are generated during the production and construction of asphalt and asphalt mixture, and particularly, when the temperature is too high, the 'green smoke' with pungent smell is generated. Because the components of the asphalt are complex, and different asphalt components have great differences, the harmful gas components discharged during the production and construction of the asphalt and the asphalt mixture are relatively complex, and mainly comprise Volatile Organic Compounds (VOCs), carbon oxides, nitrogen oxides, sulfides and the like. With the increasing and deep humanity of the concept of green environmental protection, the requirement of road construction on environmental protection is higher and higher, especially on urban roads in residential areas. During the production and construction of asphalt and asphalt mixtures, a lot of harmful gases are generated, wherein sulfides also have pungent smell, so that the physical and mental health of construction operators is greatly influenced, and obvious trouble is caused to residents around the environment.

The smoke contains various organic matters including carbocyclic hydrocarbon, cyclic hydrocarbon derivatives and other compounds, which have harmful effects on human health, and the asphalt smoke contains various polycyclic aromatic hydrocarbon substances including benzopyrene, benzanthracene, carbazole and the like, most of which are carcinogenic and strong carcinogenic substances, the particle size is more than 0.1-1.0 mu m, the minimum is only 0.01 mu m, the maximum is about 10.0 mu m, and especially the smoke contains various carcinogenic substances represented by 3, 4-benzopyrene. The main way of harming human health is to attach the fly ash below 8um and suck the fly ash into human body through respiratory tract. Therefore, the purification treatment of the asphalt smoke is very necessary to ensure that the emission meets the atmospheric environmental standard.

The asphalt odor removing additive on the market at the present stage is mainly divided into an odor covering technology and a reaction adsorption technology, wherein the odor covering agent mostly adopts gas odor and covers gas with pungent odor during the production and construction of asphalt and asphalt mixture by adding spice components, so that the stimulation of harmful gas to operators and surrounding residents is reduced, but the emission of the harmful gas cannot be reduced essentially; the reaction adsorption technology is mainly characterized in that a free radical scavenger and an adsorbent are combined at the present stage, wherein the free radical scavenger has high molecular activity, so that the main components have great harm to people, the flash point is often low, and potential safety hazards exist in the production process of the odorless asphalt.

Disclosure of Invention

The invention aims to overcome the defects and provide an environment-friendly and safe odorless asphalt modifier and modified asphalt thereof, and volatile smell of asphalt at high temperature is eliminated.

In order to solve the technical problems, the invention adopts the following technical scheme:

an environment-friendly odorless asphalt modifier comprises the following raw materials in parts by weight:

10-25 parts of aldehyde compound;

10-25 parts of an acid ester compound;

0.2-1 part of a surfactant;

1-5 parts of plant essential oil and salt compounds;

40-60 parts of base oil;

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 compound is one or more of methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, n-amyl acetate, benzyl acetate, phenyl acetate, ethyl formate, ethyl acetate, ethyl propionate, ethyl butyrate, ethyl valerate, ethyl stearate, ethyl phenyl acetate, ethyl benzoate and allyl caproate.

Further, the surfactant is a zwitterionic surfactant, and the zwitterionic surfactant is alkyl imidazoline type halide acid salt or alkyl betaine halide acid salt;

Further, the plant essential oil and the salt compound are one or more of camellia oil, rose essential oil, jasmine essential oil, orchid essential oil, citronella oil and zinc ricinoleate.

Further, the base oil is one or more of aromatic oil, vacuum residue oil and paraffin oil.

The invention provides a preparation method of an environment-friendly odorless asphalt modifier, which comprises the following steps:

(1) weighing 40-60 parts of base oil by weight, and heating to 70-85 ℃ in a reaction kettle;

(2) adding aldehyde compound, acid ester compound, plant essential oil and salt compound into the base oil, starting vacuum device, mechanically stirring, and stirring for 30-40 min;

(3) and (3) controlling the temperature to be reduced to 30-45 ℃, closing the vacuum device, adding the surfactant, continuously stirring for 10-15min, and cooling to room temperature to obtain the environment-friendly odorless asphalt modifier.

Further, the vacuum degree of the vacuum device is 10-30 Pa.

The invention also provides the odorless modified asphalt prepared by the environment-friendly odorless asphalt modifier, wherein the weight ratio of the environment-friendly odorless asphalt modifier to the asphalt is 1: 600-900.

Further, the asphalt is common petroleum asphalt or polymer modified asphalt.

The environment-friendly odorless asphalt modifier and the modified asphalt thereof have the beneficial effects that: by reacting with odor compounds generated in the asphalt, harmful substances in the asphalt are effectively locked, and H is inhibited ₂S，SO₂，NO_XWaiting for generation and volatilization of asphalt smoke; meanwhile, the modifier component is effectively dispersed in the asphalt under the action of the surfactant, so that the inhibition effect is enhanced; the environment-friendly components are adopted, the harm of the modifier in the high-temperature asphalt to human bodies is reduced, and the safety coefficient of the odor-free modifier during production is improved through blending; meanwhile, different plant essential oils are prepared, so that on one hand, the adsorption reaction of the asphalt smoke is further performed, and on the other hand, the odor of the odor purification modifier can be prepared according to the requirements of customers, so that pleasant odor-free asphalt is obtained. The environment-friendly odorless asphalt modifier disclosed by the invention has the advantages of environmental friendliness, simple preparation method, high safety coefficient and the like.

Detailed Description

The technical solution of the present invention is explained in detail with reference to the following examples.