JPS59196369A - Novel composition - Google Patents

Abstract

PURPOSE:To provide a compsn. which can be used as a paving material having excellent resistance to cold and wear and safety without using asphalt, by adding siliceous sand and natural fiber fragment or granulated corn or fruit husk to a specified thermoplastic resin. CONSTITUTION:Siliceous sand and natural fiber fragment or granulated corn or fruit husk are added to a thermoplastic resin component mainly composed of 50-90wt% thermoplastic resin having a melt index of 100 or below and 50- 10wt% thermoplastic resin having a melt index of 150 or above. Examples of the thermoplastic resins are an ethylene/vinyl acetate copolymer resin, polypropylene resin, polyethylene resin, polyester resin, etc. Preferred natural fibers include short fibers of bamboos, cotton and flax having high heat resistance and tensile strength. The fiber length is pref. 10cm or shorter. Granulated rice hull, wheat chaff, buckwheat chaff, walnut shell, ume (Japanese apricot) core or apricot core having a particle size of 40 mesh or above is preferably used.

Description

Detailed Description of the Invention The present invention relates to a new composition suitable for coating or lining as a waterproofing method for civil engineering and architectural structures such as roads and building rooftops. The main components are 50 to 90% of thermoplastic resin with an Mr value of 100 or less and 10 to 50% of a thermoplastic resin with an Mr value of 150 or more, in addition to silica sand and natural fibers. The present invention relates to a novel composition suitable for coating or lining, which is made by adding short flakes or crushed grains or fruit rinds.

The case where the novel composition of the present invention is applied to roads will be explained below.

Conventionally, asphalt 1, crushed stone, and sand have been mainly used as paving materials for paths.

However, this asphalt has a temperature of 21 degrees, and the adhesive
It depends on the temperature, especially in cold regions (below -5℃).
However, it has the drawback of significantly lower tensile strength and adhesion.

However, on roads during snowfall in cold regions, spiked tires are used on vehicles to prevent slipping.
There is C.

However, these spiked tires seriously damage the paved surface of the road, which scatters in the form of dust, which is the biggest cause of threat to not only drivers and pedestrians, but also the lives of people living in road jugs. This is now attracting attention as a major social problem in cold regions.

This invention eliminates the use of asphalt, which has the above-mentioned drawbacks, as a paving material for walkways, and has excellent cold resistance, abrasion resistance, and safety. The present invention aims to provide a new composition that can be applied to civil engineering and architectural structures such as rooftops, as well as indoor and outdoor plazas.

That is, the present invention mainly consists of 50 to 90% by weight of a thermoplastic resin having an MI value of 100 or less and 10 to 50% by weight of a thermoplastic resin having an MI value of 150 or more, in which silica sand and short pieces of natural fiber are added. It is a composition containing crushed grains or fruit peels, and its characteristics are as follows: (1) The thermoplastic resin, which is the main component, has an MI value of 100.
50-90% by weight of the following and 10-90% of the following:
(2) Use in combination with 50% market weight; and (2)
The method is to use short pieces of natural fibers or coarsely crushed grains, fruit rinds, and husks.

However, thermoplastic resins include ethylene-vinyl acetate copolymer resin, polypropylene resin, polyethylene resin,
Polyester resin is used, and by using a combination of resins with different MI values of 100 or less and 150 or more, this composition provides fluidity when working on roads, etc., and provides sufficient adhesion after construction. It is something.

When using a resin with an MI value of 100 or less and a resin with an MI value of 150 or more, resins of the same type and having the above-mentioned MI values (for example, ethylene-
Vinyl acetate copolymer resins with MI values of 300 and 60 (Jf) are used. That is, ethylene-vinyl acetate copolymer resins with different degrees of crystallization are used.

), the above-mentioned ethylene-vinyl acetate copolymer resin, polypropylene resin, polyethylene resin, polynisple resin 1. i: Any MI value within each specific range may be selected and used.

Next, the appropriate amount of natural fibers, grains, and crushed fruits relative to the thermoplastic resin, which is the main component, is 0.5 to 10%.

These crushed materials or short pieces are used to prevent excessive fluidity during coating or lining work of this composition after application.

As natural fibers, linen or cotton with strong heat resistance and tensile properties, or short fibers of 71 mm are preferable, and the fiber length is 10 mm.
A value of non or less is appropriate.

In the case of crushed husks and rinds of rice, wheat, mum, kurji, plum, ansu, etc., coarsely crushed ones with a mesh size of 40 mesh or more are preferable.

The reason why resins having different MI values are used together in this invention is as follows.

For example, when resins with different melting points are heated and melted and then gradually cooled, the one with the higher melting point begins to solidify, and the one with the lower melting point solidifies last. Therefore, in order to make products with different melting points uniform, it is necessary to rapidly cool them.

In this invention, resins with different MI values are used together, with the higher MI value being used as the fluid and the lower MI value being used as the adhesive, so that as the hot stone gradually falls, it oozes out from the resin with the higher MI value. Be 1 ~ causes trouble.

This product uses short flakes of natural fibers such as bamboo, hemp, and cotton, as well as crushed outer shells of rice, wheat, plum, and kurji, for the purpose of preventing stickiness and reinforcing the resin. and
This not only prevents stickiness but also improves adhesive strength and compression.

+5. With this invention, even if the back 10"-15 mm of thermoplastic resin is replaced with butadiene resin, rosin, rosin ester, nisdel phthalate, petroleum resin, etc. in iJ3, the performance will not be affected at all and costs will be reduced. I can do it.

When the composition of the present invention thus obtained is used as a road paving material or a coating material for the roof of a building, etc., the characteristics are: (1) It does not contain asphalt 1 or more.

(2) Good workability at low temperatures (mixing with crushed stone).

Can be used even if the temperature H+3 drops to 60℃.

(3) Do not lose elasticity even at low temperatures (-35°C).

(4) Work can be performed on conventional asphalt pavement.

(5) No stickiness even at high temperatures (road surface temperature) of 75°C.

(6) Good weather resistance due to the use of carbon.

(7) It must be safe for the human body because it does not contain single metals or chlorine.

(8) Since it is a Bot Null type 1~ type, recycle use is possible.

(9) Since it is a one-melt type, the car can be driven immediately after the work is completed.

00) It must be able to sufficiently provide the compression, abrasion and slip prevention properties required for pavement.

(11) Conventional asphalt has been used to prevent defects at low temperatures.
Although rubber-based resins have been added, they reduce penetration and elongation, making them undesirable as binders for paving materials.The composition of the present invention can solve this problem.

etc.

Furthermore, the composition of the present invention may contain a white pigment (for example, Ti).
By adding O2), it can be used as a line marking paint for roads in cold regions, and it can also be colored freely by changing the pigment.

Further, in this invention, silica sand is used to increase adhesive strength.

As mentioned above, the use of the composition of the present invention as a road paving material has been explained; however, it is also highly effective in use as a composition for waterproofing construction methods for civil engineering structures such as building rooftops. be.

This will be explained below using examples.

Example 1 Edylene-vinyl acetate copolymer resin with MI value of 60 15.
.

The first mixture of 25 n of polybutadiene resin and 10 l of petroleum resin
Silica sand No. 5 is used as a resin with the properties shown in the table.
30 7/Silica sand No. 6
50 pieces/short pieces of bamboo (6-10mm)
2 = Fine walnut powder (40 mesh)
1.

Fine rice hull powder (40 mesh) was blended with 111 parts of carbon i7/, and this blend was heated to 180°C in a melting pot.
The viscosity was 15,000 cps, making it easier to apply, and one hour after applying a primer prepared by diluting the above resin of this example to 10 times Kijirol solution on an asphalt pavement surface, a strong coating film was obtained when lining was applied on top of the primer. is,
A road surface with excellent flexibility and abrasion resistance can be obtained as a vehicle pavement surface, and the cumulative wear rate per 100,000 large vehicles is 1.8 compared to 3.5 m/m of straight road.
It was 7m.

Table 1 Note:! The elongation, 100% modulus, and tensile strength marked with were measured using a test piece with a film thickness of approximately 1.4 mm, a width of 5 mm, and a total length of 100 mm.

In addition, the elongation test was conducted using an Instron type tensile testing machine, with a crosshead speed of 200 mm/min between the marked lines.
The test was conducted with a chuck distance of 20 mm, a distance of 60 mm, and a chart speed of 200 mm/min.

Example 2 Resin used in Example 1 7.5 parts by weight Stone powder 11.5 n Sand
40.5 N crushed stone
40.0 Il Bamboo strips (8 mm) 0.5 n The above mixture was mixed and heated in an asphalt plant until the internal temperature was 190
Once the temperature reached ℃, it was loaded onto a truck and transported to a road construction site, where it was uniformly spread and finished under pressure using a rolling roller to a thickness of 50m4.

The temperature of this 114 is 82°C.

After construction, we conducted a practical test for 4 months on a road surface using spiked tires, and found that the 1♀ wear rate of the road surface was 25% lower than that of a conventional roadway.
% decreased.

The composition of this invention has cold resistance at room temperature d3 and -3.
When a compressive strength test at 8°C was conducted according to the method of JIS A-1108, the results shown in Table 2 were obtained, and it was recognized that the composition of the present invention was superior in strength to conventional asphalt 1. It was done.

In addition, the composition of the present invention showed no tack and no tie V marks even when the surface reached 65°C.

Table 2 Voluntary writing of procedure corrections〉 August 9, 1982 Mr. Kazuo Wakasugi, Director General of the Special Collections Agency Name Ozeki Chemical Industry Co., Ltd. “Detailed description of the invention” column in the specification Contents of correction Insert the following sentence after the second line of page 9 of the statement box.

``As mentioned above, this invention is characterized by a new composition that does not contain asphalt, but in order to improve workability due to temperature changes during construction, the characteristics of the composition are not inhibited during blending. There is no problem in mixing and using asphalt in appropriate amounts, and it is possible to reduce costs by doing so.'' Procedure Neho Seisho (self-motivated) 1. Indication of the case Patent Application No. 71950 of 1982 2 , Name of the invention New composition 3, Relationship with the case of the person making the amendment Patent applicant address 301-151 Saruji, Naya-cho, Tarumi-ku, Kobe City
Name: Ozeki Chemical Industry Co., Ltd. 4, Agent address: 1-18-18-6 Nakatsu, Oyodo-ku, Osaka City,
Contents of the Amendment Contents of the Amendment 1, page 9 of the specification, lines 3-4 E and above, ``As explained above,'' has been changed to ``and the direct use of the composition of this invention as a road paving material.'' ,
or by using it on asphalt paved surfaces.
A. It is possible to improve the fluidity caused by temperature, which is a drawback of Sfardo roads (for example, cracks in the road, wavy form, distortion of white lines, etc.).

Above, we have explained the use and effects of the composition of this invention as a road paving material.''

Claims (5)

[Claims] (1) The main components are 50 to 90% by weight of a thermoplastic resin with a melt index value of 100 or less and 10 to 50% by weight of a thermoplastic resin with a melt index value of 150 or more, and silica sand and natural fiber short pieces or A new composition suitable for painting or lining, which is made by adding coarse grains or fruit rinds. (2) Thermoplastic 11 resin is selected from a group of resins such as ethylene-vinyl acetate copolymer resin, polypropylene resin, polyethylene resin, and polyester resin.
1. A novel composition according to claim 1 of Patent No. 91-9, characterized in that two or more types of compositions having different levels are selected and used. (3) The novel composition according to claim 1, wherein the natural fiber strips are short strips of 10 mm or less of outer skin fibers of bamboo, bovine, mitsumata, etc. (4) Crushed grain husks are 40% of the husks of rice, wheat, buckwheat, etc.
The novel composition according to claim 1, characterized in that it is a coarsely crushed material of mesh-F. (5) Crushed fruit rind is characterized by being 40 mesh or more of husk of plum, kurji, ansu, etc.
Fj Novel composition according to claim 1.