JPS59199559A - Carbon fiber-containing gypsum powder for molding porcelain and manufacture - 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] ``Unexploded 1'J'' is carbon 7;
This invention relates to a carbon fiber-containing stone/r'F powder used in manufacturing a porcelain mold (hereinafter simply referred to as a plaster mold) and a method for manufacturing the same.

In order to manufacture a one-piece plaster mold by mixing carbon fibers for the purpose of increasing strength, a bundle of carbon fibers is mixed in advance with countless M fibers.
'A' is separated into 'Miii tri' one by one, and the separated carbon fiber joints are uniformly spread within the plaster mud.
However, the amount of carbon 1ta 7m mixed in is extremely small compared to gypsum powder, and it is necessary to accurately determine the ratio of ffl to gypsum powder, so it is mixed every time a gypsum mud area is created. It is extremely difficult to accurately calculate the trace amount of carbon 0 (341 and
He lacks BA and is extremely efficient.

In view of the above-mentioned 1.n, unexploded Jll is made of lightweight and highly buoyant 1r fibers (dissolved into single fibers using jet airflow circulating in the imaginary cone, etc.), or A small amount of charcoal 91b is mixed and dispersed uniformly in the gypsum powder in the form of a bundle! The main purpose was to improve work efficiency during plaster mold manufacturing.

In the present invention, the carbon fibers are placed on a single pyramid with several turns to be uniformly mixed and dispersed in the gypsum powder.For the reasons described later, the length of the carbon fibers is 5 inches, preferably 170 mm, preferably 2 degrees. It is necessary to set the thickness to 3 to 3 (1 mm).

Figure 1 shows a +5 mm x
A graph of the test results showing the relationship between the length of carbon fiber and bending strength 1ζV (flexural strength) in a 25 mm x 250 mm plaster test piece is shown, and as is clear from this, when the length of carbon fiber is 15 mm or less It can be seen that the bending strength decreases rapidly, and the J'i of carbon fiber remains constant over 20 degrees. Here, the length of the charcoal fibers dispersed in one stone powder is limited to 5 to 70 mm, and the length is 5IIIm or less. When making the mother stone-1: due to the lack of surface roughness between the f particles and the carbon particles, the strength of the stone and mold could not be improved sufficiently, and 70III11 If this is the case, the carbon that was mixed in when making Ishibaki Dori, or when pouring Ishibe Dori into a case mold, tends to combine into a loaf and form a single helical shape. This is because it is important to uniformly disperse the carbon fibers within the plaster mold.

First, -I? According to the law, the father-in-law was declared
, 'D, Cut the 4 pieces into lengths of 5 to 70 m1, and evenly distribute them into the stone/r'r powder! 11 [Several swords to make it easier to get caught! Give ik one coat of slag. There are various ways to imitate the fibers on the charcoal 3, but for example, after cutting the bundle-shaped carbon rut A1 (:) by a conventional method,
The sizing applied to the carbon fibers can be treated with IR*heat removal in an atmosphere, or with acetone.
i s'; i 1. :If you immerse the removed bundle 1/J carbon key in water and stir it while adding RD, it will cause countless waves due to the ultra-minimal wave age or <41E, lf@, ]Shiba action. Ell of the book, green scattering convex on the Ωbank≧”,j,::F:
It is good to take it out of the water and dehydrate and dry it.

Me, ash ≦ -) L's ν2L construction IL de, Ising treatment, 2 horn flood length, also known as 7y <Q (: '4% north; step over and look at this single mine square)'' - record It may be made into a smart state by cutting it into length.

In translation, stone 6・[Charcoal-1'h t for 7 powder
-'a 6'A OJ;jri'', ih'<%';'
, 1% by weight should be 0.03 yuan α'51Ql mil%, preferably 0.1 to 0.3% by weight, according to the theory (2) described below. Figure 2 shows 100 parts by weight of stones and pots, 60 parts by weight of water.
Shizube, length 20mz charcoal purple lily: required Nezumi Asahibe's ``;
Showing the relationship between the ratio of mixed carbon to fine stone/igo and the bending strength of a gypsum test piece of 15cm x 25mm x 250mm consisting of 1 cup; Graph is 1
Figure 3 shows the coal mixed in the stone Tf.
The weight ratio of ζtf;, N'jp, and the water absorption rate are 1'
′, graphs of tests and 11 states showing the i section are shown.

As is clear from Fig. 2 and Fig. 31-4, the larger the proportion of carbon mixed into the plaster, the higher the bending strength and the higher the water absorption Here, the ratio of charcoal to stone and powder to fl, 03 to 11R is 1,037k i'?t% or less. In this case, the ratio to gypsum is too high (J)'14+, and it is not possible to achieve sufficient strength for Ishikura Nozomi.Also, if the ratio is 1 weight or more than 11%, charcoal: If there is too much charcoal fiber fib in the plaster, it will not be possible to evenly disperse the charcoal fibers in the plaster, making the body susceptible to insects, and will also cause stones and RF mud to form a case. The fluidity when pouring into the mold circle deteriorates, making it difficult to work, and the physical properties of the plaster mold to be molded, such as water injection properties, change, and the material does not meet the requirements as a molding material for porcelain. This is because -1 of I'N4ni is likely to be present inside the plaster LW.

Then (, H cut the jet sharp air Obi's wolfberry for A and F
If you add Kodji powder and the charcoal A<i> that was turned into enemy by Tan-betsu-jin in the above situation, you will get stone, # powder, and single fiber. When the carbon fibers are properly mixed with the air jet and circulated in a jet air stream and collected from the air stream by a cyclone or bag filter, the gypsum A carbon fiber-containing stone bone powder is obtained in which the powder and the dispersed carbon fibers are uniformly mixed.Here, the pressure of the jet air flow is 1 to 2 Kgf/c+n2 (Kg/, 2
), and if the air pressure is increased, stones and grains will mix together, or stones*'E1.
The impact force between the fibers and the carbon fibers becomes large, and both the gypsum beads and the carbon fibers are pulverized, and the physical properties of the gypsum mold material are liquefied, which is undesirable. In this way, by using a low-pressure jet air flow, the extremely thin and long fibers are highly buoyant and heat-generating. It is evenly mixed into the Go-5 Powder Bi.

1ya's 64 resultant force f yun toshi C is a bow) 4 bi'1 is a sword J,
几る≦U/There is a method for making swords, and this is a bag of about 11' C1 pressure, 51τ powder in each bag, and charcoal L scattered in a car's charm.
Pour in the specified amount of -4l1, take it to the bottom of the bag 1, and put it in the bottom of the bag 1.
By reciting the 3rd recitation of the 1st recitation of the set body 11', the 2f1 tano of the structure 11' was accelerated,
The magnitude and direction of the speed d are arbitrarily changed, and thereby the stone/gel λ powder and carbon fibers in the sheath 1 are mixed with the agent.

In addition, when placing 6L of carbon fiber in the plaster cast, the curing delay is 15ll, and the necessary habit of water reduction and purity is 14.
It is also possible to mix it into poetry;

Then, the carbon sample ml [is dispersed and mixed with a stone □i,!
Rent K1 only for one episode that fits the mixture amount of the end of A and the end of the episode,
The place where the lesson was done > 2 cups of water filled with 1 cup of water.
The stone powder was added and the powder was stirred gently using a stirring blade in a tributary vessel. ) K1 [is uniformly dispersed in the gypsum mud 1.1, this stone - i'f
Case with mud carpet! When the stone is poured into (1), hardened (a) and dried, 10,000 bars (2) of stone in which carbon 1:3 fibers are dispersed are produced.

In addition, the stone W powder distributed above is made by dispersing several single fibers and uniformly mixing and dispersing single charcoal fibers into the gypsum powder, but polyvinyl pyrrolidone, polyvinyl alcohol, etc. Sized with water G-based sizing agent.
This carbon fiber J/Kei is used to create a stone clay pot (at -5Σ, the water-bathable sizing agent elutes into water and causes self-dispersion, so it remains bundled in the stone/soil powder. As a mixing method, it is preferable to use a swinging plate to swing the bottoms of the two flexible bodies described above.

Examples of the present invention will be given below.

Example 1 0.5 weight 100 tons for Ishi' blue powder, Kaiseki-', f powder
% of single fibers with a length of 2 inlln, and an iW joint machine Jet Ohmizer Mill-0 made by Furyudo Energy Co., Ltd.
101-C13CGSd, air pressure 2Kgf/1
After phantom mixing at 1m2 (1<g/m"), 61 air is also collected from inside using a cyclone and a bag filter, charcoal purple fiber is mixed and dispersed, and 1J of sawstone and powder is mixed. Within this stone, ifi, and end, single fibers of charcoal and purple fibers were uniformly dispersed without forming lumps, and were ideally dispersed with almost no loss or wrinkles of the carbon fibers.

Real Noah 1Ii41. A2 100 parts of gypsum powder, 0.3 parts of carbon fiber with a length of 20 mm, 0.3 parts of gypsum powder, 0.3 parts of gypsum powder, 0.3 parts of carbon fiber with a length of 20 mm, and 0.3 parts of gypsum powder. In the writing and mouth of the 3-stop part, the rotary oscillation is used to
The mixture was mixed for about 2 minutes using an Omnimixer 0M-5q (manufactured by Omnimixer 0M-5Q) for about 2 minutes at a stirring speed of about 40 rpm to obtain gypsum powder in which charcoal fibers were mixed and dispersed. Single fibers of charcoal fibers were uniformly dispersed in this stone powder circle without any clumps, and the carbon fibers were hardly damaged.

Example 3 Stone? 7 powder xoOmjit part, 0.3 part by weight of bundled carbon fibers with a length of 1 mm sized with polyvinyl pyrrolidone (water bath sizing agent), 0.2 part by weight of cut sand (hardening is abrasive), Showa Melment F- manufactured by Denko Co., Ltd.
Mix 0.2 parts by weight of 2 u (g water solution) for about 2 minutes at a maximum rotation speed of about 35 Orpm using a Chiyoda Giken Kogyo Co., Ltd. Mixing Iso Omni Mixer 0M-5 model using a rotary shaker. A gypsum powder containing dispersed carbon fibers was obtained. Bundled carbon fibers were almost uniformly dispersed in this gypsum powder, and the carbon fibers were hardly damaged. Incidentally, a part of the bundle-like carbon am was dispersed into jllk fibers during rotational oscillation.

As described above, according to the present invention, the bundle-shaped charcoal fiber arrays, which have been sized with a carbon fiber or a water-based sizing agent, are dispersed into single fibers in gypsum powder in a predetermined manner. 6
Since the mixture is evenly mixed in 11 cups, when making petroglyph clay, if you weigh the gypsum powder mixed with this charcoal 7, you will get 100.1% unmixed. carbon uya i for
The combination is necessarily determined, and every time stones and clay are made, there is one mixing ηLb and the corresponding imitation is a disaster beast'; irQ
The operation of measuring only R and ik is no longer necessary, and the operation of measuring only R and ik is unnecessary.
The working weight when responding is improved.

[Brief explanation of the drawing]

Figure 1 is a graph showing the relationship between the length of carbon fibers (1E) mixed in the plaster and the bending strength of the plaster. Figure 2 is a graph showing the relationship between the length of carbon fibers mixed in the plaster and the bending strength of the plaster. Figure 2 shows the carbon fibers mixed in the plaster. 4Fy against
Figure 3 is a graph showing the relationship between Vi11 and the bending strength of gypsum. Figure 3 shows the weight ratio of fine charcoal mixed in the stone filling to 1 stone, and the 1 and 1 water resistance of gypsum. Figure 4 is a graph showing the relationship between
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500 6. The number of inventions increased by amendment is as follows. 1. What is the scope of the claims of the present application?
We will correct it as follows. (1) Carbon fibers dispersed into single fibers with a length of 5 to 7 mm are placed in the gypsum powder at a temperature of 0°0 relative to the gypsum powder.
Stone powder containing carbon fiber for ceramic molding, which is uniformly mixed and dispersed in a proportion of 3 to 1% by weight. (2) A bundle of carbon fibers with a length of 5 to 707 mm sized with a water-soluble sizing agent in gypsum powder,
A carbon fiber-containing stone powder for molding ceramics, which is uniformly mixed and dispersed in the gypsum powder at a ratio of 0.03 to 1%. (3) Carbon fibers are cut into lengths of 5 to 70 meters and dispersed in advance into countless single meter fibers, and stone powder and 0.03 to 10% of the gypsum powder are added to the carbon fibers. After introducing the carbon fibers dispersed into single fibers into a circulating jet air flow and mixing them uniformly, 14 iffi of gypsum powder in which carbon fibers are mixed and dispersed is recovered from the air flow. A method for producing carbon fiber-containing stone powder for ceramic molding, characterized by: 2. In the 5th line of the 4th shell, change ``..., if it is 5 degrees or less...'' to ``..., if it is 3 degrees full...''
I will correct it. 6. Page 4, line 8, “If the height is 7011 m or more...
" will be corrected to "If it exceeds 100 jnm, e." 4. In the 9th line of page 6, we have amended "...at less than 0.03 fold M%..." to "...good at less than 0.01 kyosha%." 5, page 6, line 11: “..., and if the content of heavy ore is 1% or more,
..."2, [..., and if it exceeds 1.2% by weight, it will not work."
I will correct it. 6. Insert the following text between line 15 and line 16 of 9j8L. ``Furthermore, carbon delicacy is mixed and dispersed in the gypsum powder at a higher ratio than the ratio at the time of use, and at the time of use, the stone splitting powder is mixed again, and the gypsum powder and carbon fiber are placed in an appropriate ratio. According to this method, it is possible to reduce the transportation cost of stone bone powder mixed with carbon fiber.'' -End-

Claims (3)

[Claims] (1) Add charcoal paste dispersed into single fibers with a shallow depth of 5 to 70 mm Ll into a stone powder of 0.0 mm to the gypsum powder.
A stone bone powder containing carbon fiber for ceramic molding, which is uniformly mixed and dispersed in a proportion of 01 to 11 + v't%. (2) A bundle of carbon fibers with a length of 5 to 70 mm, which has been sized and sized with a water-soluble sizing agent, is added to the core plaster powder at a rate of 0, (+ 1 to 1 jR).
1 scrap porcelain molding charcoal and stone containing Shizo fiber - T# powder made by uniformly mixing and dispersing j'rt% in the countryside. (3) The charcoal fibers are cut into lengths of 5 to 70 mm and made into countless 1jt fibers 1h. .01 to 1 tonne t'+'t% of i fibers with 1 lil I carbon fiber pile dispersed in the i fibers are introduced into a jet air stream that is ringed, and after uniformly mixing both, the air stream is To collect iαL of stone bone powder with carbon (stain fiber mixed and dispersed) from
A method for producing carbon fiber-containing gypsum powder for J4 type J porcelain.