KR100441261B1 - Resin composition for road pavement - Google Patents

Abstract

It is also possible to use a resin composition for road pavement containing an amorphous polyolefin, to which a tackifier, liquid polymer or the like is added to an amorphous polyolefin. The resin composition for road pavement has a strength property equal to or higher than that of conventional asphalt pavement and packaging using a color binder, and at the same time provides a resin composition for road pavement having excellent coloring property and discoloration property. The above mixture is particularly high in dynamic stability and has a small amount of loss of kantapro. Therefore, when it is suitably applied to the coloring of a bus lane or the like and the coloring of drainage pavement, . In addition, since the present invention can be melted and mixed with heated aggregates as well as ordinary asphalt, it can be mixed with heated aggregates at a room temperature and a solid state. Therefore, even when providing a large amount of a mixture, And it is also applicable when supplying a small amount of a mixture.

Description

Resin composition for road pavement

The present invention relates to a binder composition suitable for coloring roads, sidewalks, parks, squares and the like, impermeable packaging, water permeable packaging and drainable packaging. The composition of the present invention is light yellow and transparent, and has almost no discoloration under deterioration in a natural environment. Further, since the water resistance and the self-tackiness are low and the strength as a binder is high, the composition is mixed with natural aggregates, color aggregates and pigments , A durable color packing material, a light color packing material and a natural color packing material.

BACKGROUND ART Conventionally, packaging asphalt has been mainly used as a binder for road pavement. However, due to the increase of the traffic volume, the impression of the rolling wheel mark becomes remarkable. In order to cope with this, rubber such as SBS, SEBS, EEA, SBR, BR, CR, or thermoplastic elastomer is added to the asphalt One modified asphalt has also been used.

In recent years, environmental and social needs have changed, improving the stability in cities, bus lanes for beautification, parks, reservoirs, tunnels, and other coloring and bright colors are increasing. In addition, as an environmental problem, the permeability of road pavement has been attracting attention for the suppression of underground water shortage, river flooding, and flood.

In addition, applications of drainage pavement have been expanded for the purpose of prevention of muddy water fogging of roadway and improvement of visual quality in rainy weather. Particularly, it is necessary to increase the scattering resistance of the aggregate because the porosity is about 20% in the case of the waterproof packing material mixture. Especially, when the waterproof packing material has a softening point of 70 ° C or higher, toughness of 200kgf ㆍ cm or higher, and tensile strength of 100kgf ㆍ cm or higher Modified asphalt is used. For reference, the softening point of packaged petroleum asphalt is below 55.0 ° C, and the softening point of ordinary modified asphalt is below 70.0 ° C.

Further, including the high viscosity modified asphalt, the prior art is mainly made of asphalt, and since it is black in color, it is difficult to obtain a color.

Further, as one of substitutes for asphalts for the purpose of colorization, there is one which is disclosed in Japanese Patent Application Laid-Open No. 4-100862. This includes compositions comprising petroleum solvent extracted oils, petroleum, coal and / or natural resins, thermoplastic rubbers, and naphthenic acids.

However, since the physical properties of a single composition are the same as those of usual asphalt for packaging, they are not suitable for pavement pavement or roadway pavement. It can also be seen that the dynamic stability of the packing mixture shown in the above publication is 420 to 1.050 times / mm. For example, the target value of dynamic stability shown in Table 4.1 of the primer design and construction manual using the modified asphalt (Japan Asphalt Association) is 1,000 to 5,000 times / mm depending on traffic volume. In other words, the dynamic stability of about 1,000 times / mm in areas with high traffic density implies that the impingement of the flow wheel occurs.

On the other hand, Japanese Patent Application Laid-Open No. 5-262921 discloses a composition comprising a thermoplastic elastomer and a tackifier resin. Since the composition has a high softening point and can obtain a dynamic stability of about 1,130 to 3,500, there has been no study on drainage pavement of roadway where the scattering resistance of aggregate must be considered. Further, the above-mentioned composition is suitable for producing a small amount of a mixture because it is preliminarily melted and mixed with aggregates as usual asphalt, and is added to and mixed with the aggregate as it is in solid form.

The binder for a color mixture not using asphalt is firstly superior in coloring property as compared with a black packaging asphalt, but is far away from a colorless transparent and has a white pigment or a light color It is not possible to obtain sufficient coloration in the case of combining with pigments, or when the color of the aggregate is intended to be utilized without using pigments. Second, the 20th Japanese Society of Roads Conference p. 596 to 597, they are deteriorated prematurely and discolored in a natural environment.

In view of the above problems, it is an object of the present invention to provide a method for producing an optical fiber having a property as a binder suitable for coloring of impermeable packaging, permeable packaging and drainable packaging into a bridging channel, And can be used in both of the solid and the aggregate as an additive, and is capable of being used in a pale yellow and transparent state, and at the same time having little discoloration in deterioration under natural environment.

Further, the use of the amorphous polyolefin fins according to the present invention has an advantage that the viscosity is lower than that of the conventional product, the workability and the compatibility with the aggregate are good, and it is not easily deteriorated.

SUMMARY OF THE INVENTION The present invention provides a resin composition containing an amorphous polyolefin in order to solve the above problems.

As a specific example,

The resin composition for road pavement.

The amorphous polyolefin (a) of the present invention is not particularly limited, but the following is preferable. Atactic polypropylene which is a by-product in the production of the crystalline polypropylene and which contains propylene component in an amount of 50% by weight or more may be used. In addition, -Olefin can be used for the purpose of production. In the case of production aimed, it is possible to use, for example, a catalyst obtained by polymerization in the presence of hydrogen using a titanium supported catalyst supported on magnesium chloride and triethyl aluminum. From the viewpoint of the combination stability and the quality stability, it is preferable to use a desired amorphous polyolefin which has been produced. Also suitable is an amorphous polyolefin having 50 wt% or less of butene-1 and 50 wt% or more of the total of propylene and butene-1 components at the same time. In addition, the amorphous polyolefin has an average molecular weight of 1,000 to 20,000, preferably 1,500 to 15,000.

An amorphous polyolefin having 30% by weight or less of ethylene and 50% by weight or more of the total of components such as propylene and ethylene at the same time is also suitable. The amorphous polyolefin has an average molecular weight of 1,000 to 20,000, preferably 1,500 to 15,000.

More specifically, it is preferable to use polypropylene, a propylene / ethylene copolymer, a propylene / butene-1 copolymer, a ternary copolymer of propylene, butene-1 and ethylene, a propylene / hexene- -1 or 2-methylpentene-1, and amorphous polyolefins mainly comprising propylene and / or butene-1 component. Of these, the propylene / ethylene copolymer has an ethylene content of 0 to 30% by weight, preferably 1 to 20% by weight. When the ethylene content is larger than 30% by weight, it is too soft and the surface tackiness is excessively large, making it difficult to use as the road-packing binder.

In addition, in the amorphous polyolefin of the present invention, it is preferable that the boiling n-heptane content, that is, the content for the Soxhlet extract portion by boiling n-heptane is 70% by weight or less. In the amorphous polyolefin of the present invention, if the proportion of the boiling n-heptane group is larger than the above range, the open time is excessively short when used as a pavement binder for a road, inconveniences such as drying after packaging, Which is undesirable. As the amorphous polyolefin in the present invention, Uebetak APAO manufactured by UB Lexen Co., Ltd. and the like can be used.

Examples of the tackifier (b) of the present invention include natural rosin (rubber rosin, wood rosin, tall rosin and the like), modified rosin (polymer rosin, hydrogenated rosin and the like), coumarone, indene, Resin, terpene resin, petroleum resin such as aliphatic, alicyclic or aromatic resin, phenol resin, or the like can be used.

Of these tackiness-imparting agents, petroleum resin and / or terpene resin, which are relatively compatible with an amorphous polyolefin, and water-soluble materials thereof can be suitably used. It is also preferably an aliphatic petroleum resin containing an aliphatic / alicyclic copolymerization.

The blend ratio thereof is (a) 30 to 200 parts by weight, preferably 50 to 150 parts by weight, based on 100 parts by weight of the amorphous polyolefin. When the blend ratio is less than 30 parts by weight, the viscosity at 160 캜 is increased, and the packaging workability is deteriorated, the adhesion between the aggregate and the stone is deteriorated, and the dynamic stability is deteriorated. If it exceeds 200 parts by weight, flexibility at low temperatures is lost, and cracks are generated.

Examples of the liquid polymer (c) of the present invention include liquid polybutene and liquid polybutadiene. Of these, liquid polybutene is preferable.

The blending amount of the liquid polybutene is (a) 1 to 30 parts by weight, preferably 2 to 15 parts by weight, based on 100 parts by weight of the amorphous polyolefin. If the amount is less than 1 part by weight, there is a problem that the adhesion to the aggregate becomes weak. When the amount exceeds 30 parts by weight, there is a problem that the adhesive property is strong and the adhering substance comes out on the construction surface or the workability is deteriorated.

The composition of the present invention has the following characteristics from the above-described constitution.

(1) When the amorphous polyolefin is the main component

The softening point is higher than that of the viscosity, and high dynamic stability can be obtained.

(2) In the case of an amorphous polyolefin and an adhesion-imparting agent

The viscosity suitable for construction and mixing can be selected, and the adhesion to the aggregate is good.

(3) Relationship between amorphous polyolefin and liquid polymer

Easy preparation of viscosity, good low-temperature characteristics, and flexibility. Or adhesion to the aggregate is also good.

(4) In the case of an amorphous polyolefin, a tackifier, or a liquid polymer

(2), (3), has flexibility at temperature, and good adhesion to aggregate.

When coloring the composition of the present invention, known pigments such as iron oxide (Fe ₂ O ₃ ) and chromium oxide (Cr ₂ O ₃ ) are added.

In the case of a mixture, it is possible to use a filler such as clay, talc, calcium carbonate, fine crushed stone, coarse aggregate such as gravel, slag, artificial aggregate, and fine aggregate such as natural sand or artificial sand. These are suitably blended according to the purpose.

Further, a small amount of thermoplastic resin and / or thermoplastic elastomer can be added to the composition of the present invention. For example, a low melting point resin such as LDPE is preferable.

The combination of the composition of the present invention and the pigment, filler and aggregate is carried out at a temperature of 140 ° C to 200 ° C, preferably 160 ° C to 180 ° C, by a plant for producing an ordinary asphalt pavement mixture.

At this time, it is possible to use the composition of the present invention as a part of the composition without excluding the packaging material (for example, about 0.2 to 1.5% by weight of the composition in the LDPE film of 7 to 20 m).

[Examples and Comparative Examples]

(Preparation of mixture)

The mixture to be subjected to the various property tests may be prepared by heating the above-mentioned resin composition melted at 160 캜 to 170 캜 and putting it into aggregated materials beforehand or mixing the resin composition at a room temperature and solid temperature at 180 캜 It is heated and mixed into the aggregate. When the pigment is added, it is put into the room at the room temperature immediately before the injection of the resin composition.

(Test Methods)

1. Binder properties test

The penetration test, the softening point test and the elongation test are in accordance with JIS K 2207, the 60 ° C viscosity test is conducted by the Japan Road Association Packing Test Method Manual 3-5-11, the toughness and tensile strength test is conducted by the Japan Road Association Packing Test And were tested by the method manual 3-5-17.

2. Marshall stability test

(G) Carried out according to Japanese Road Association Packing Test Method Manual 3-7-1.

3. Wheel Tracking Test

(G) Carried out according to Japanese Road Association Packing Test Method Manual 3-7-3.

4. Kantapro examination

Conducted according to JHS 231-1992 Test Method of Japan Highway Corporation.

5. Evaluation of coloring property

Immediately after the preparation, the color of the sample was visually observed and evaluated by comparison with a mixture using a conventional binder for color.

6. Evaluation of Fadeability

The sample provided with the present invention as a binder and the sample provided with a binder for commercial color packing were put outdoors, and the change in color of the two samples was visually observed and compared.

7. Construction test

(1) Construction

Asphalt Finishers, iron wheel rollers and tire rollers were used for the test construction and evaluated by comparison of the workability of ordinary mixtures.

(2) Surface state after application

By observing the surface state of ordinary mixture visually, comparative evaluation.

(material)

(1) An amorphous polyolefin

① UT2715

Propylene / butene-1 copolymer < / RTI >

Number-average molecular weight = 4,500, compositional ratio Propylene 65 wt%

Butene-1 35 wt%

Melting point at 190 占 폚 = 1,500 cps

② UT 2304

Product of Ubelex Co., propylene / ethylene copolymer

Number average molecular weight = 3,200, compositional ratio propylene 92% by weight, ethylene 8% by weight, melt viscosity at 190 캜 = 450 cps

(2) Viscosity imparting agent

Malcolmets T-100A

The product of the Ringan Petrochemical Co., Ltd., the aliphatic petroleum resin

(3) Liquid polymer

HV-1900

Products of Nippon Petrochemical Co., Ltd., polybutene

(4) Aggregate

Finely crushed stones, fine sand and the like were mixed to prepare an aggregate having the synthetic granularity shown in Table 1 below.

Table 1 Aggregate Particle Size

(5) Pigment

Chromium oxide (Cr2O3)

(Example)

Example 1

Example 2

Example 3

Example 4

Were heated and melt mixed at 160 DEG C to obtain the composition of the present invention. Table 2 shows properties of the above composition and petroleum asphalt 60 to 80 for packaging, modified type II asphalt (trade name: TR-PALT S) and modified asphalt for drainage packaging (polarsulfate).

Table 2 Binder properties

Example 5

One embodiment the melt to 160 ℃ a composition prepared in Example 1, 5.2 parts by weight of the aggregate (dense) 93.8 parts by weight of the pigmentary chromium oxide at ambient temperature (Cr ₂ O ₃₎ 1.0 parts by weight by parts of the test asphalt mixture prepared indoor heated to 170 ℃ The mixture was prepared in the apparatus, and the mixture property test and evaluation of the coloring property were carried out.

Example 6

One embodiment the melt to 160 ℃ a composition prepared in Example 1, 4.8 parts by weight of the aggregate (drainage) 94.2 parts by weight of the pigmentary chromium oxide at ambient temperature (Cr ₂ O ₃₎ 1.0 parts by weight by parts, the indoor test asphalt mixture is heated to 170 ℃ The mixture was prepared by a production apparatus, and the mixture property test and evaluation of the coloring property were carried out.

Example 7

The composition was adjusted in Example 1, at room temperature solid (15cm) 5.2 parts by weight, with the aggregate heated to 180 ℃ (dense) 93.8 pigment, chromium oxide of the parts by weight of a room temperature (Cr ₂ O ₃₎ 1.0 parts by weight, the indoor test The mixture was prepared in an asphalt mixture manufacturing apparatus, and the mixture property test and colorability evaluation were carried out.

Example 8

4.8 parts by weight of the composition (15 cm 3) prepared in Example 1, which was solid at room temperature, 94.2 parts by weight of aggregate (pourable property) heated to 180 ° C and 1.0 part by weight of chromium oxide (Cr ₂ O ₃ ) The mixture was prepared in an asphalt mixture manufacturing apparatus, and the mixture property test and colorability evaluation were carried out.

Example 9

One embodiment the melt to 160 ℃ a composition prepared in Example 2, 5.2 parts by weight of the aggregate (dense) 93.8 parts by weight of the pigmentary chromium oxide at ambient temperature (Cr ₂ O ₃₎ by 1.0 parts by weight, the indoor test asphalt heated to 170 ℃ The mixture was prepared by the apparatus for preparing the mixture, and the mixture property test and the evaluation of the coloring property were carried out.

Example 10

One embodiment the melt to 160 ℃ a composition prepared in Example 3, 5.2 parts by weight of the aggregate (dense) 93.8 parts by weight of the pigmentary chromium oxide at ambient temperature (Cr ₂ O ₃₎ by 1.0 parts by weight, the indoor test asphalt heated to 170 ℃ The mixture was prepared by the apparatus for preparing a mixture, the mixture property test, and the evaluation of the coloring property.

Example 11

One embodiment the melt to 160 ℃ a composition prepared in Example 4, 5.2 parts by weight of the aggregate (milip) 93.8 parts by weight of the pigmentary chromium oxide at ambient temperature (Cr ₂ O ₃₎ by 1.0 parts by weight, the indoor test asphalt heated to 170 ℃ The mixture was prepared by the apparatus for preparing a mixture, tested for the properties of the mixture, and evaluated for evaluation of colorability.

Table 3 Mixture properties

Comparative Example 1

The same procedure as in Example 2 was carried out except that the resin composition was changed to Modified Type II asphalt (trade name: TRALP S).

Comparative Example 2

The same procedure as in Example 3 was carried out except that the resin composition was changed to a high viscosity modified asphalt (trade name: Polasulfat).

Comparative Example 3

The same procedure as in Example 2 was carried out except that the resin composition was changed to the composition (product name: meropart) of Example 1 of Japanese Patent Laid-Open No. 4-100862.

Comparative Example 4

The procedure of Example 4 was repeated except that the resin composition was changed to the composition (product name: Panhard) disclosed in Japanese Patent Application Laid-Open No. 5-262924,

(Test result)

The results of the test are summarized below.

(1) The composition shown in Example 1 has a softening point of 108 占 폚, a higher value than petroleum asphalt 60 to 80 for packaging, modified II type asphalt and high viscosity modified asphalt, and excellent fluidity can be expected.

(2) The elongation of the composition shown in Example 1 is 100+, which is the same value as that of the petroleum asphalt 60-80 for packaging, and excellent cracking resistance can be expected.

(3) The toughness of the composition shown in Example 1 is 286 kgf · cm, which is about the same as that of the asphalt for drainage packaging.

(4) The tensile strength of the composition shown in Example 1 is 158 kgf · cm, which is about the same as that of asphalt for packaging.

(5) From the results of Examples 2 and 4 and Examples 3 and 5, it is possible to produce the same composition as the composition shown in Example 1, even when it is melted and used at room temperature and solid.

(6) When the composition shown in Example 1 is used in a dense mixture, the same Marshall stability as in Comparative Examples 1, 3, and 4 is shown.

(7) When the composition shown in Example 1 was used in a dense mixture, it exhibited a large dynamic stability of about 1,000 to 4,500 times / mm as compared with those of Comparative Examples 1, 3 and 4, .

(8) When the composition shown in Example 1 is used in a water-miscible mixture, the same stability as in Comparative Example 2 is exhibited.

(9) In the case of using the composition shown in Example 1 in a mixture having a pourable property, it shows a large dynamic stability of about 2,000 times / mm, and excellent fluidity and the like can be expected as compared with the case of using Comparative Example 2.

(10) When the composition shown in Example 1 is used in a pourable mixture, it shows the same amount of loss of cantaprola as in Comparative Example 2, and it is expected that the aggregate scattering resistance such as asphalt-based material for asphalt pavement can be expected.

(11) In the case of using the composition shown in Example 1, it exhibits excellent coloring property as compared with Comparative Examples 1 and 2. And exhibits excellent coloring properties even in comparison with Comparative Examples 3 and 4. [

(12) When the composition shown in Example 1 was used, excellent fading resistance was exhibited as compared with Comparative Examples 3 and 4.

(Test construction)

Example 12

5.2 parts by weight of the composition (15 cm) prepared in Example 1 at room temperature and solid, 93.8 parts by weight of aggregate (dense) heated to 180 占 폚 and 1.0 part by weight of pigment were used to prepare a mixture by an asphalt mixed- , The test construction is carried out.

Example 13

4.8 parts by weight of the composition (15 cm) prepared in Example 1 at room temperature and solid, 94.2 parts by weight of aggregate (pourable property) heated to 180 DEG C, and 1.0 part by weight of pigment were used to prepare a mixture by an asphalt- Conduct construction.

Comparative Example 5

The same procedure as in Example 6 was carried out except that the resin composition was changed to a modified type II asphalt (product name: TRAFALT S) which was previously heated and melted.

Comparative Example 6

The same procedure as in Example 7 was carried out except that the resin composition was changed to a high viscosity modified asphalt (product name: Polasulfat) which was previously heated and melted.

(Test construction result)

1. Construction

The workability of the mixture using the composition shown in Example 1 was the same as the workability of the mixture using modified type II asphalt and modified asphalt for drainage packaging.

2. State of surface

The state of the surface after application was the same as the condition of the surface of the mixture using the modified Ⅱ type asphalt and the modified asphalt for drainage pavement.

The present invention provides a road paving resin composition having a strength property equal to or higher than that of conventional asphalt pavement and packaging using a color binder, and at the same time having excellent coloring property and discoloration property. Since the mixture according to the present invention has a particularly high dynamic stability and a small amount of kantaprolactic loss, it is expected that excellent compatibility can be expected when it is suitably used for colorization of traffic roads such as bus lanes and colorization of drainage pavements Lt; / RTI >

In addition, since the present invention can be melted and mixed with heated aggregates in the same manner as ordinary asphalt, it can be mixed with heated aggregates at a room temperature and solid state. Therefore, even when supplying a large amount of a mixture, It is also possible to apply a small amount of the mixture without using it.

Claims (5)

100 parts by weight of an amorphous polyolefin having a number average molecular weight of 1,000 to 20,000 and 50 to 50% by weight of a propylene component and 30 to 200 parts by weight of a tackifier and / or 1 to 30 parts by weight of a liquid polymer By weight. The polypropylene resin composition according to claim 1, wherein the amorphous polyolefin is a polypropylene, a propylene / ethylene copolymer, a propylene / butene copolymer, a propylene / butene copolymer, a polypropylene, or a polypropylene having a propylene component content of 50 wt.% Or more and a number average molecular weight of 1,000 to 20,000. 1 and ethylene, and a copolymer of propylene and hexene-1, octene-1 or 2-methylpentene-1. 2. The polyolefin composition according to claim 1, 1) propylene and butene-1, wherein 50% by weight or less of butene-1 and 50% by weight or more of the sum of propylene and butene-1 components and having a number average molecular weight of 1,000 to 20,000 , And / or 2) a road comprising a mixture of propylene and ethylene, comprising 30% by weight or less of ethylene, 50% by weight or more of the sum of propylene and ethylene, and having a number average molecular weight of 1,000 to 20,000 Resin composition for packaging. The resin composition for road paving according to claim 1, wherein the tackifier is at least one of a petroleum resin and a terpene resin. The resin composition for road paving according to claim 1, wherein the liquid polymer is at least one of liquid polybutene and liquid polybutadiene.