JPS59162154A - Inorganicmolding raw material composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inorganic molding raw material composition, particularly an inorganic molding raw material composition used for manufacturing a molded article having a continuous reinforcing material such as metal wire, lath, glass fiber roving, etc. incorporated therein. Concerning 0 standard, ordinary portland cement
(hereinafter referred to as OPC)' is an inorganic molding raw material composition (hereinafter referred to as OPC) which is prepared by kneading in pipe water and adding other materials such as aggregate, fibers, and plasticizers (hereinafter referred to as OPC). A long molded material is obtained by extruding the molded raw material (U. A widely used method is to produce a unit molded article by cutting it into a size of - and curing and curing it. This method has the advantage that long shaped bodies can be obtained continuously and with high efficiency. Recently, there has been a demand for primary and extrusion molded products to have high strength. In response to this demand, the extrusion molding method also
The above-mentioned OPO-based extruded raw materials, metal wires, laths, glass fiber rovings, etc. (hereinafter, these km are referred to as continuous reinforcement materials).

) was simultaneously extruded to obtain a long molded body with a continuous reinforcing material inside. A long molded body containing such a continuous reinforcing material exhibits a large cutting resistance when cut by piano wire, etc., so if an attempt is made to cut the OPC extruded raw material while it is in an uncured state,
When the continuous reinforcing body is pushed by the cutting edge of the rotary cutting machine and moves inside the long molded body, cracks may occur on the surface of the long molded body, and the surface of the seam may open and break. It can even happen. To prevent this from happening, wait until the oPC-based extruded raw material hardens and has sufficient strength before cutting, but this takes at least about a day. Curing time is required, and the production line to accommodate this process must also be extremely long, resulting in no advantages of continuous extrusion, such as VC. As an inorganic material, 0F (4- As long as it is used in Europe, there is no hope of eliminating its drawbacks. Therefore, instead of OPO, use early-strength hydraulic properties such as gypsum, early-strength cement, ultra-early-strength cement, and jet cement. However, if it is conveniently used as a raw material for extrusion of an early-strength hydraulic material, the curing time can be shortened, but the hardening of the extruded raw material progresses in the extrusion molding machine.
In extreme cases, there is a risk of causing a serious problem in which extrusion molding itself becomes impossible.

In view of the above-mentioned drawbacks, the present invention was devised for the purpose of solving this problem.The present invention is made by mixing hydraulic inorganic materials with water and, if necessary, adding aggregates, fibers, plasticizers, etc. In a modified raw material assembly used when additives are also added and mixed with the 9 inorganic molding raw material composition to simultaneously mold the continuous reinforcing material, the water washable inorganic material of Fjt7 is thermoset. The gist is that it is made of inorganic material.

The main portion of the inorganic molding raw material composition according to the present invention is a thermosetting inorganic material. The reason why the main part is made of a thermosetting inorganic material is that when producing a long molded element by extrusion molding, the material must be kept in the extrusion molding machine for a long time until it is extruded from the discharge pipe. After being extruded, it retains fluidity and hardens rapidly by applying heat, making it easier to process long molded bodies such as cutting, resulting in molded bodies with excellent dimensional accuracy. This is to help the body get more efficiently. As the curable inorganic material, specifically thermosetting cement such as Osaka TSA (trade name) manufactured by Osaka Cement Co., Ltd., a mixture of water glass and zinc oxide, etc. are used.

If necessary, one or more of aggregates, fibers, and plasticizers are added to the inorganic molding raw material composition whose main portion is composed of a thermosetting inorganic material. These additives promote the formability of the long molded element, and after being extruded, it is suitable for cutting and hardening progresses to a moderate degree, preventing deformation such as so-called sag from occurring, and making it highly durable. Silica sand, porcelain chamotte, river sand, etc. are used as aggregates that are effective for obtaining products with precise shapes and dimensions, and asbestos, glass fibers, carbon fibers, bulbs, organic fibers, etc. are used as fibers. Methyl cellulose, ethyl cellulose, etc. are used as plasticizers. Since the additive is a molding aid,
The total amount added is preferably kept within a range that does not exceed 70 inches, which is the total amount of the thermosetting inorganic material and additives. , if it exceeds 70%, the properties of Table 11 tend to deteriorate.0 Thermosetting inorganic materials and additives such as aggregates, fibers, plasticizers, etc. must be thoroughly mixed by adding excessive water. Needless to say, it won't happen. The continuous reinforcing material, which is extruded simultaneously with the inorganic molding raw material composition obtained by mixed operation and is wrapped and laminated in the long molded body, may be a gold maple or plastic wire, a small-diameter vibe, a hoop, or a lath. , roving cloth or net made of glass fibers, carbon fibers, organic fibers, or other fibers, etc., depending on the shape, size, use, etc. of the unit molded article to be manufactured. It can be used as

Note that the inorganic molding raw material composition according to the present invention is not necessarily used only for extrusion molding, but can also be used for press molding and cast molding. In short, the same objective can be achieved with any molded product containing a continuous reinforcing material inside the molded product. Next, examples of the present invention will be described. Osaka'rsA (1+j listed product name) 1ooi as a thermosetting inorganic material
jz Miyako-1 No. 6 silica sand 100 heavy doto manufactured by Katsuno Ceramic Materials Co., Ltd., asbestos (6D-4 from Canada) 5 heavy IT parts, methylcellulose (trade name h1 Metrose 90SH15000 manufactured by Shin-Etsu Chemical Co., Ltd.) 1.9 Add parts by weight,
After pouring 32 parts by weight of water into this and mixing, thoroughly kneading,
Extrusion molding was performed using an extruder (DE-100ffi manufactured by Honda Iron Works Co., Ltd., pressure 40 Kg/cm2),
Cross-sectional dimensions: 10 cm Ten pieces were equally distributed at the center of the cross section of the extrusion molded body.The extrusion molding situation is schematically shown in FIG.

In FIG. 1, 1 is an extruder, and 2F'f is a curved discharge pipe attached to the tip of the extruder 1. In FIG.

A guide body 3 for introducing the steel wire 9 into the discharge pipe 2 is attached behind the discharge pipe 2. The production line after the discharge pipe 2 includes a front conveyor 4, a middle conveyor 6, and a rear conveyor 8'4? A tunnel-shaped heat treatment equipment 5 is provided between the nil conveyor 4 and the middle stage conveyor 60, and a 1fi middle stage conveyor 6 and a rear stage conveyor 8 are installed.
The inorganic forming raw material composition kneaded according to the blending ratio shown in the table is fed to the input port 1, where seven cutting machines are installed.
At the same time, the copper wire is charged into the extruder 1 from a and extruded from the discharge pipe 2. is introduced into the guide body 3, and the introduced steel wire 9 is surrounded by the inorganic forming raw material composition inside the discharge pipe 2(1). Therefore, the steel wire 9 is piled up inside the elongated molded element 10 extruded from the discharge pipe 2. As already mentioned in this embodiment, 10 steel wires 9 were used, but the extruded fT-long molded blank 10, which is shown reduced to 5 wires in the drawings to avoid complexity, is placed on the front conveyor 4. It is gradually moved while being left in the atmosphere, and after 30 minutes, it is sent into the heat treatment equipment 5 where it is piled up. The heat treatment equipment 5 is configured to constantly adjust the temperature to an arbitrary setting by supplying hot air, high-temperature steam, or using an electric heating method.

In this example, the temperature was maintained at 120" CI/) by hot air. The part of the long molded element 10 fed into the heat treatment equipment 5 was sent out to the outside of the outlet 5a after 30 minutes. At this time, the inorganic molding raw material composition constituting all of the long molded bodies 10 had already sufficiently hardened, and measurements were taken at five locations with a penetrometer (Clayhard Tester manufactured by Nippon Insulators Co., Ltd.). However, the hardness of the inorganic molding raw material composition was 10-11.5, which was rarely 10-11.5, after heat treatment, which exceeded the measurable upper limit of 25 with a penetrometer. It has sufficient strength to hold the steel wire 9 in the wrapped state.Thus, the long molded element 10 is cut by the cutter 7 in the gap transitioning from the middle conveyor 6 to the rear conveyor 8. In FIG. 1, the blade of the cutting machine 7 is shown cutting the long molded blank 10 (in the width direction thereof. Note that 11
This is a unit molded body cut to a regular length. FIG. 2 is an enlarged perspective view of the unit molded body 11, and the cut surface of the wrapped steel wire 9 is shown on the cut surface. In short, a long molded element 1 using the inorganic molding raw material composition according to the present invention
0 comes out of the discharge pipe 2 of the extruder 1 and is left in the atmosphere.
0 minutes, heated for 30 minutes, and after a total of 1 hour, it was in a state that could withstand cutting treatment. Adjust as appropriate depending on the blending ratio and differences in shape and dimensions of the long molded element 10.

It is possible to make a clause. For example, the exposure time in the atmosphere is 2
The heat treatment time is 80-150°C, and the treatment time is 20-60 minutes.

Next, in order to clarify the effects of the present invention, a comparison example will be described using conventional methods. The inorganic molding raw material composition (OP O yarn molding raw material) of the first comparative example was made by replacing the main part of the hydraulic inorganic material with Osaka TSA (trade name), which is the thermosetting inorganic material of the present invention. OPC (manufactured by Mitsubishi Mining Cement Co., Ltd.) was used, and the materials and amounts of other additives were the same as those of the present invention. Specifically, 100 parts by weight of 020, 100 parts by weight of silica sand, 5 parts by weight of asbestos, and 1.9 parts by weight of methylcellulose were kneaded with 32 parts by weight of water. This OPC-based molding raw material was extrusion molded on the production line shown in FIG. 1 used in the practice of the present invention. In this case, the long molded element had a cross-sectional dimension of 10 cm x 1 cWL, and 10 hard steel wires with a diameter of 1.63 were encased inside it, as in the case of the present invention. Not even. Then, the heat-treated film [10 was left in a non-operating state]. In this case, the long molded element body was left in the atmosphere for about 20 hours, and finally hardness capable of withstanding cutting was finally obtained.

Comparing this first comparative example with that of the present invention, it can be seen that the time required for hardening of the present invention can be shortened to approximately 0 tablespoons. Moreover, the surface quality is far superior,
Dimensional accuracy is also low with little error. 4 OP of second comparative example
Using exactly the same O-based molding raw material as in the first comparative example, the shape and dimensions of the extrusion-molded long oxygen form body were also the same, but the curing treatment method was changed. The curing method involved extruding the long molded element, leaving it in the air for 6 hours, and then steam-curing it at a hot water temperature of 60°C for 4 hours. As a result, a cured state that could be cut was obtained, but in this case it took 10 hours after extrusion molding. As described above, by replacing the conventional OPCQ with a thermosetting inorganic material for the hydraulic inorganic material that is the main constituent material in the inorganic molding raw material composition, most of the conventional equipment is changed. Since the curing time can be shortened from t"d□ to 0 without having to do any additional work, the production efficiency of unit molded bodies containing continuous reinforcing material can be dramatically increased, and the dimensional accuracy, shape and surface can be improved. It has many effects such as being able to improve properties.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an extrusion molding production line used for carrying out the present invention, and FIG. 2 is a perspective view of a unit molded body obtained by carrying out the present invention. 1... Extruder 2... Discharge pipe 3... Guide body 4
...Previous stage conveyor 5...Heat treatment equipment 6...Middle stage conveyor 7...Cutting machine Death...Late stage compede 9
... Steel wire 10 ... Accumulated absence from long forming 11 ... Unit molded body watch Applicant Ina Seito Co., Ltd. Agent Patent attorney Toshihiko Uchida

Claims (1)

[Claims] 1. Knead the hydraulic inorganic material with water, and add aggregate if necessary.
A molding raw material used when simultaneously molding continuous reinforcing materials such as metal wire, lath, glass fiber, roving, etc. by incorporating an inorganic molding raw material composition kneaded with additives such as fibers and plasticizers. An inorganic molding raw material composition characterized in that the hydraulic inorganic material is a thermosetting inorganic material.