CN1276397A - Formulation and process of high-molecular copolymer 'alloy' modified asphalt - Google Patents

Abstract

A high-molecular copolymer "alloy" modified asphalt is prepared from asphalt (50-90%), modifier (1-30%) and inorganic substance (0-50%) through heating while stirring asphalt, adding modifier and inorganic substance, stirring uniformly, grinding and homogenization.

Description

The prescription and the technology thereof of high-molecular copolymer ＂ alloy ＂ modifying asphalt

The present invention relates to the technological boundary science of petroleum chemistry technology and polymer chemistry, specifically a kind of prescription and technology thereof of high-molecular copolymer ＂ alloy ＂ modifying asphalt.

Since the wax and the sulphur content height of homemade crude oil, its bituminous heatproof and loss of properties on aging, thereby produced soft ＂ phenomenon of crisp summer in ＂ winter.If directly use, its effect is well imagined, even sulfur-bearing, the pitch that the content of wax is lower also comes modification according to its purposes abroad.Otherwise the highway of its build easily produces embrittlement, gathers around diseases such as look and rut.For road asphalt, China enterprise with three kinds of capital carries out modification without it as raw material.Thereby China's pitch use range is dwindled widely, though in limited scope the life-span also very short.The Imported Asphalt of all using in motorway or some important places has been used up a large amount of foreign exchanges.

The objective of the invention is to utilize road asphalt modification in addition, produce the prescription and the technology thereof of high-molecular copolymer ＂ alloy ＂ modifying asphalt.

High-molecular copolymer ＂ alloy ＂ modifying asphalt prescription of the present invention and technology thereof.Its prescription is as follows:

Road asphalt 50%-90% properties-correcting agent 1-30%

Inorganics 0-50%

The material of properties-correcting agent has two classes:

1, rubber school class: SBS, NR, SBR, BR, NBR, CR, EPDN and Polyurethane, terminal hydroxy group polybutadiene liquid rubber etc.

2, resene: PS, EVA, poly--vinyl toluene, inden resin, coumarone indene resin, ethene-toluene multipolymer and staybelite season army tetrol etc.

Inorganics has: carbon black, potter's clay, lime carbonate, white carbon black, talcum powder etc.

Its technology is as follows:

1) road asphalt is added in the premixed device, when temperature rises to 100 ℃, begin to stir, add properties-correcting agent when temperature reaches 150 ℃, when temperature reaches 190 ℃, add potter's clay, stirred 20-30 minute.Stirring work is carried out under normal pressure all the time.

2) mixture that stirs is sent in the uniform mixer ground, homogeneous has the naked eyes visible particle as finding in the product, can grind 2-3 time whenabouts 1-1.5 hour repeatedly.Grinding work is all the time at normal pressure, and temperature is carried out under 190 ℃-200 ℃ condition.

3) penetration degree after testing, elasticity, flowability, stretchiness; Low temperature flexibility, meet national standard after, then modifying asphalt goes out jar, packing is dispatched from the factory.

The prescription of high-molecular copolymer ＂ alloy ＂ modifying asphalt of the present invention and the advantage of technology are to make full use of domestic resource, opened up more wide material usage space, fill up domestic blank, changed the situation that relies on external importing technology and product, save a large amount of foreign exchanges simultaneously.Good social benefit and economic benefit are arranged.

Below in conjunction with accompanying drawing embodiment is elaborated:

Accompanying drawing is a process flow sheet

Embodiment one highway bottom modifying asphalt

With reference to the accompanying drawings, with road asphalt 63.88Kg, send in the premixed device, when temperature reaches 100 ℃, begin to stir, in the time of 150 ℃, add properties-correcting agent: SBS4Kg, EVA1Kg, antioxidant NBC 1.2Kg adds inorganics potter's clay 30Kg in the time of 190 ℃, stirred 20-30 minute, then compound is sent in the uniform mixer and ground homogeneous.As find that macroscopic particle is arranged in the product, and can grind 2-3 time repeatedly, approximately to grind 1-1.5 hour, grinding work is all the time at normal pressure, and temperature is carried out under 190 ℃-200 ℃ condition.Until detecting penetration degree, elasticity, flowability, stretchiness, low temperature flexibility, meet national standard after, then modifying asphalt goes out a jar packing and dispatches from the factory.

Embodiment two: low elasticity adds the filling-modified pitch of heat construction type cement concrete highway seam

With reference to the accompanying drawings, with road asphalt 70Kg, send in the premixed device, when temperature reaches 100 ℃, begin to stir, in the time of 150 ℃, add properties-correcting agent: SBS8Kg, EVA1Kg, EVA1.5Kg, antioxidant NBC 1.2Kg add inorganics potter's clay 20Kg in the time of 190 ℃, stirred 20-30 minute, then batch mixing is sent in the equal mixing tank and ground homogeneous.As find that macroscopic particle is arranged in the product, and can grind 2-3 time repeatedly, approximately to grind 1-1.5 hour, grinding work is all the time at normal pressure, and temperature is carried out under 190 ℃-200 ℃ condition.Until detecting penetration degree, elasticity, mobile, stretchiness, low temperature flexibility.Meet national standard, then modifying asphalt goes out jar packing and dispatches from the factory.

Embodiment three: the water-repellent modified pitch of roofing heat construction

With reference to the accompanying drawings, with road asphalt 61.5Kg, send in the premixed device, when temperature reaches 100 ℃, begin to stir, in the time of 150 ℃, add properties-correcting agent: SBS7Kg.EVA1Kg, antioxidant MB C0.1Kg, in the time of 190 ℃, add inorganics potter's clay 30Kg, stirred 20-30 minute, and batch mixing was sent in the equal mixing tank ground homogeneous then.As find that macroscopic particle is arranged in the product, and can grind 2-3 time repeatedly, approximately to grind 1-1.5 hour, grinding work is carried out under the condition that temperature is 190 ℃-200 ℃ all the time at normal pressure.Until detecting penetration degree, elasticity, flowability, stretchiness, low temperature flexibility meets national standard, and then modifying asphalt goes out a jar packing and dispatches from the factory.

Claims (2)

1, a kind of prescription of high-molecular copolymer ＂ alloy ＂ modifying asphalt, it is as follows to it is characterized in that filling a prescription:

Road asphalt 50-90% properties-correcting agent 1-30%

Inorganics 0-50%

2, a kind of technology of high-molecular copolymer ＂ alloy ＂ modifying asphalt is characterized in that:

1) road asphalt is added in the premixed device, when temperature rises to 100 ℃, begin to stir, add properties-correcting agent when temperature reaches 150 ℃, when temperature reaches 190 ℃, add potter's clay, stirred 20-30 minute.Stirring work is carried out under normal pressure all the time.

2) mixture that stirs is sent in the uniform mixer ground, homogeneous has the naked eyes visible particle as finding in the product, can grind 2-3 time whenabouts 1-1.5 hour repeatedly.Grinding work is all the time at normal pressure, and temperature is carried out under 190 ℃-200 ℃ condition.

3) penetration degree after testing, elasticity, flowability, stretchiness; Low temperature flexibility.After meeting national standard, then modifying asphalt goes out jar packing and dispatches from the factory.

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