KR101508632B1 - Heat Paper Using Paper-Making Process And Method Of Preparing The Same - Google Patents

Abstract

The present invention relates to heat paper using a paper-making process and a method for producing the same and, more specifically, to heat paper using a paper-making process and a method for producing the same, wherein a process is simple and costs are cheap compared to existing heat paper production, and homogeneity of heat paper can be improved by increasing dispersibility of Zr/BaCrO_4.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat paper using a papermaking process,

More particularly, the present invention relates to a method for producing a thermosetting resin composition which is simple and inexpensive in process compared with a conventional thermosetting resin composition and increases the dispersibility of Zr / BaCrO ₄ , And a method of manufacturing the same.

The thermoelectrons activated by melting the electrolyte in a short time using a pyrotechnic heat source, an inactive salt electrolyte, which is an electric insulator at room temperature, is composed of a lithium alloy, a eutectic salt electrolyte, a transition metal sulfur compound and a heat source The unit cells are stacked. Since the eutectic salt electrolyte is a solid without ionic conductivity at room temperature, it can not generate the output before the activation, and the internal temperature is maintained at 500 ° C. by the operation of the igniter by the activation signal applied from the outside, Occurs. However, when a part of the heat sources sequentially stacked in the thermocouple is not ignited, the triggering time is slowed and the discharge failure occurs during the discharge. Also, when the heat source is ignited by the high temperature generated in the igniter, , Which is known to increase the risk that the temperature of the battery stack increases above the decomposition temperature of the electrode and the anode is decomposed and the resulting heat is added to seriously cause thermal runaway of the thermal battery. To solve these drawbacks, heat paper application technology has been developed to ensure ignition reliability through simultaneous ignition of internal heat sources. The conventional hot paper manufacturing method is a method in which Zr powder as fuel and BaCrO ₄ powder mixed with BaCrO ₄ powder as an oxidizer are mixed with glass fiber, which is a pyrotechnic material, Zr / BaCrO ₄ . Was impregnated with the mixed powder solution on a glass fiber filter and a method of preparing a base material impregnated with the following binder as post-treatment step, the base material using a press by the method for producing the opening was pressed dry, the manufacturing method is the dispersibility of BaCrO ₄ There is a disadvantage that it causes a problem of the uniformity of the heat paper and the thickness control due to the deterioration and also the disadvantage of raising the manufacturing cost of the heat paper due to the complicated manufacturing process such as the additional treatment of the post treatment. Therefore, it is required to develop a method for improving the homogeneity of the hot paper by increasing the dispersibility of Zr / BaCrO ₄ .

The present invention the homogeneity of the opening by as been made in view of solving the problems of the prior art, the conventional open to simplify the complicated manufacturing process of producing a relatively process is simple, less expensive, and increases the dispersion of Zr / BaCrO ₄ And a method of manufacturing the same.

In order to achieve the above object,

(A1) Zirconium (Zr) powder as a fuel and barium chromate (BaCrO ₄ ) powder as an oxidizer are classified into a size of 1 to 100 μm and then mixed to prepare Zr / BaCrO ₄ Preparing a mixed powder;

(A2) mixing and stirring the prepared Zr / BaCrO ₄ mixed powder and glass fiber, and adding at least one selected from the group consisting of a cationic organic coagulant, an anionic organic coagulant and an inorganic coagulant as an coagulant to prepare a slurry ;

(A3) obtaining a thermal paper by using a paper-making process as the slurry; And

(A4) A method of producing a heat paper comprising a drying step of pressing and collecting the obtained hot paper.

In addition, the present invention provides a heat paper produced by the above-described manufacturing method.

In addition, the present invention provides a heat paper characterized in that the heat paper is an ignition material for a thermal battery.

The thermal paper using the papermaking process of the present invention and the manufacturing method thereof have the advantages of simplifying the complicated manufacturing process of the conventional hot papermaking process, simplifying the process and reducing the cost. More specifically, the ignition Jane Zr / BaCrO ₄ The mixed powder is added to a slurry containing glass fibers and the cationic organic coagulant and / or the anionic organic coagulant are further mixed by using the double polymer method to improve the retention of the slurry, and the Zr / BaCrO ₄ mixture It is possible to obtain a hot paper uniformly distributed Zr / BaCrO ₄ by preventing the outflow of Zr / BaCrO ₄ that can occur in the manufacturing process by allowing the powder to be well bonded to the glass fiber. In addition, the thermal paper produced by the papermaking process has the effect of uniformly containing a large amount of Zr / BaCrO ₄ than the method of impregnating Zr / BaCrO ₄ after preparing the glass fiber paper. In addition, by simplifying the process using a paper machine, it is possible to remarkably improve the homogeneity of the heat paper by manufacturing the heat paper which is easy to manufacture and can be controlled in handling and thickness.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an example of a method for manufacturing a hot paper using a papermaking process of the present invention.
FIG. 2A is a photograph showing a water-paper machine used in the production of a hot paper of the present invention, and FIG. 2B is a simple structural diagram showing the water-machine.
FIG. 3 is a graph showing the results of calorimetry measurement of a hot paper produced according to Examples and Comparative Examples of the present invention.
FIG. 4 is a graph showing the results of measurement of the burning rate of hot paper produced according to Examples and Comparative Examples of the present invention. FIG.
5A and 5B are photographs showing ignition sensitivity and heat source ignition test of a hot paper produced according to an embodiment of the present invention.
6A, 6B, and 6C are photomicrographs showing the surface of a heated paper made according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail.

Hereinafter, the present invention will be described with reference to the drawings.

As shown in Fig. 1, the method of manufacturing a heat paper of the present invention comprises:

(A1) Zirconium (Zr) powder as a fuel and barium chromate (BaCrO ₄ ) powder as an oxidizer are classified into a size of 1 to 100 μm and then mixed to prepare Zr / BaCrO ₄ Preparing a mixed powder;

(A2) mixing and stirring the prepared Zr / BaCrO ₄ mixed powder and glass fiber, and adding at least one selected from the group consisting of a cationic organic coagulant, an anionic organic coagulant and an inorganic coagulant as an coagulant to prepare a slurry ;

(A3) obtaining a thermal paper by using a paper-making process as the slurry; And

(A4) a drying step in which the obtained hot paper is pressed and recovered.

(A1) Step: Zirconium as fuel ( Zr ) Powder and oxidizing agent Barium chromate ( BaCrO ₄ ) Powders having a size of 1 to 100 mu m Grain size  After classification and mixing Zr / BaCrO ₄ Step of preparing mixed powder

The zirconium (Zr) powder and the barium chromate (BaCrO ₄ ) powder are pulverized using a ball mill mill, an automatic inducer, a colloid mill or a shatter box to form a powder suitable for the purpose. Each of the pulverized powders may then be subjected to a sieving step to have a powder size suitable for the purpose. The particle size of the zirconium (Zr) powder and the barium chromate (BaCrO ₄ ) powder prepared as described above is preferably 1 to 100 μm, more preferably 1 to 50 μm, most preferably 1 to 10 μm . Zr / BaCrO ₄ The mixed powder is composed of 15 to 30% by weight of zirconium (Zr) powder and 70 to 85% by weight of barium chromate (BaCrO ₄ ) powder and mixed in a ball-mill mixer, a high speed mixer, Lt; RTI ID = 0.0 > water. ≪ / RTI > When the zirconium (Zr) powder and the barium chromate (BaCrO ₄ ) powder are mixed in a size of 100 μm or more in the mixing process, the homogeneity of the thermal paper is lowered, and problems such as cohesion (S3) and dehydration (S5, S6) Which is undesirable.

(A2): Step Zr / BaCrO ₄  Mixed glass fiber with mixed powder Stirring  Cationic organic coagulant as coagulant, Anionic  An organic coagulant and an inorganic coagulant, The slurry  Steps to manufacture

In the step (A2), glass fibers (glass fiber and ULPA filter) included in the thermal paper of the present invention are added to water and dissociated, and then Zr / BaCrO ₄ Adding a mixed powder and stirring, and adding at least one selected from the group consisting of a cationic organic coagulant, an anionic organic coagulant and an inorganic coagulant as a coagulant to prepare a slurry.

Specifically, in the present invention, a cationic organic coagulant, an anionic organic coagulant or an inorganic coagulant may be used as a coagulant. When the coagulant is not added, the glass fiber and the Zr / BaCrO ₄ mixed powder are not mutually bonded, It is impossible to form a heat paper because it is separated.

In the step (A2), a patch is formed on the surface of the particles to enhance the effect of bonding Zr / BaCrO ₄ to the glass fiber, so that the additives are well held in the slurry, Or an organic flocculant mixing step to prevent the organic flocculant from being dissolved.

The Zr / BaCrO _{4 of the} step (A2) The mixed powder may include 1000-1500 parts by weight of the Zr / BaCrO ₄ mixed powder per 100 parts by weight of the glass fiber. In this case, the glass fiber is added to a waring blender together with water, Zr / BaCrO ₄ The mixed powder was added again, and the mixture was stirred at 16,500 rpm / min for two minutes for two times to prepare a slurry. The average length of the glass fibers used in the present invention may be from 1 to 10 mm. When the diameter is less than 1 mm, the fragrance and dissociation efficiency becomes low due to a high proportion of the fragrance, and defective dewatering (S5, S6) , The dispersibility of the slurry is lowered, which is not preferable in order to cause the problem of formation of the aggregate (S3).

In the step (A2), the Zr / BaCrO ₄ Adding the inorganic coagulant to the glass fiber before mixing the mixed powder and the glass fiber, and mixing and stirring the inorganic coagulant, wherein the inorganic coagulant is at least one selected from the group consisting of aluminum sulfate, aluminum chloride and iron chloride, And the inorganic coagulant is contained in an amount of 40 to 80 parts by weight based on 100 parts by weight of the fibers.

When the inorganic flocculant is included in the above range, the inorganic flocculant is distributed among the glass fibers to increase the bonding force between the fibers, thereby aggregating the fibers together, thereby improving the tensile strength of the open papers and maximizing the properties of the additives. When the inorganic coagulant is included in the above range, the amount of the inorganic coagulant may decrease and the burning rate may decrease as shown in the following examples. Since the inorganic flocculant is composed of aluminum sulfate (Al ₂ SO ₄ ) group, it may react with the electrode (cathode / anode) due to releasing sulfur gas during the thermoelectric operation, thereby causing thermal runaway.

In the step (A2), the cationic or anionic organic coagulant is added to the slurry (glass fiber and Zr / BaCrO ₄ ) to form a cation or an anion to form cross-linking, thereby improving the retention due to binding or aggregation of the slurry It plays a role. When the cationic or anionic organic coagulant is added, it induces proper aggregation or bonding of the glass fiber and Zr / BaCrO ₄ to increase the degree of retention, thereby smoothly flowing the slurry in the (A3) And it is possible to prevent the glass fiber and Zr / BaCrO ₄ from escaping into the wire mesh during the dehydration process, thereby forming a desired hot paper.

In the above process, the cationic organic coagulant or the anionic organic coagulant may be used alone or in a mixture thereof .

(A2) step Zr / BaCrO ₄ The slurry in which the mixed powder and the glass fiber are mixed is transferred to a stock tank S1 as shown in FIG. 2B, and then a cationic or anionic organic coagulant is added and stirred to complete the slurry. In the slurry, glass fiber and Zr / BaCrO ₄ The holding effect of the mixed powder is enhanced and a smooth flow of the slurry is formed in the subsequent processes (A3) and (A4) to form the slurry (thermal slurry) In order to prevent the Zr / BaCrO ₄ from escaping with the white water (S7), a cationic or anionic organic coagulant, which improves the bonding strength between the glass fiber and Zr / BaCrO ₄ , is added, and then the stirring speed is adjusted to 300 to 700 rpm And each of the additives may be added, followed by stirring for 3 to 30 minutes. If the degree of retention of the slurry is not increased by the organic flocculant, the amount of the Zr / BaCrO ₄ The mixed powder is lost together with the white water (S7), so that it is impossible to obtain a heat paper having desired characteristics. In addition, it is necessary that the slurry is kept stirring slowly at a constant rate even after all the additives are mixed. If the stirring is not maintained after the slurry is prepared, the glass fiber and Zr / BaCrO ₄ The mixed powder may sink or clump on the bottom, and problems such as lowering of basis weight and loss of Zr / BaCrO ₄ may occur in the subsequent hot-paper manufacturing process, so that it is not possible to obtain a heat paper having desired characteristics.

The flocculant of the step (A2) may be a cationic organic flocculant. More specifically, it may include a step of mixing a slurry with a cationic organic flocculant to prepare a slurry, wherein the cationic organic flocculant Is at least one selected from the group consisting of poly-diallyldimethylammonium chloride (poly-DADMAC), cationic polyacrylamide and polymethylmethacrylate (PMMA), and Zr / BaCrO ₄ And 1 to 10 parts by weight of the cationic organic coagulant is contained in 100 parts by weight of the mixed powder and the glass fiber.

When the cationic organic flocculant is included in the above range, the dispersibility and flocculation effect of the additives in the slurry can be enhanced.

Further, the flocculant in the step (A2) may be a cationic organic flocculant and an anionic organic flocculant. More specifically, the slurry may be mixed with a cationic organic flocculant, and an anionic organic flocculant may be mixed to form a slurry Wherein the anionic organic coagulant is at least one selected from the group consisting of anionic polyacrylamide (A-PAM), bentonite, and silica, and the Zr / BaCrO ₄ mixed powder And 1 to 10 parts by weight of the anionic organic coagulant based on 100 parts by weight of the glass fiber.

When the anionic organic flocculant is included in the above range, the cohesive force can be increased by promoting ionic bonding between the additives added in the slurry.

The method may further include mixing the glass fiber and the inorganic flocculant in the step (A2) and adding the Zr / BaCrO ₄ mixed powder, the cationic organic flocculant and the anionic organic flocculant to the slurry.

(A3): Step As a slurry  Grassland Process paper - making process ) To obtain a heat paper

The step (A3) is a step of supplying the slurry obtained after the step (A2) to the head box (S2) through a slurry tank (Stock Chest) (Sl) as a paper manufacturing apparatus, supplying the slurry to the wire mesh (S4) Determining the thickness of the thermal paper when forming the wire mesh S3 and adjusting the flow of the slurry so that the slurry is uniformly distributed over the wire mesh S4, can do. In the step (A3), the slurry is ground in a water-papermaking machine to obtain a heat paper having a water content of 200 to 300%. If an excessively large amount of slurry is flowed in the above-mentioned hot-mill manufacturing process, the slurry flows smoothly on the wire mesh S4 and natural dewatering (S5) and suction dewatering (S6) The heat can not be obtained. If the flow rate of the slurry is too small, the slurry does not form the slurry S3 on the wire mesh S4, and heat paper having desired characteristics can not be obtained.

More specifically, as shown in FIGS. 2A and 2B of the present invention, the head box S2 in FIG. 2B is a place where the slurry flows. The apparatus is not a continuous apparatus but uses a hand sheet machine to simplify the process. The slurry is filled in the head box S2 by using a beaker with a human hand, and the valve of S5 is opened to remove water The hot paper can be manufactured through the unloading process.

(A4): a drying step in which the obtained hot paper is squeezed and recovered

(A4) is a step of recovering the hot paper formed uniformly distributed on the wire mesh (S4) obtained after the step (A3) without the post-processing procedure, the hot paper contains 200 to 300% In order to solve the disadvantage that the heat resistance is lowered, the heat paper is squeezed by using a roller to improve the homogeneity of the heat paper by increasing the density of the heat paper and to improve the handling by lowering the water content to 50 to 100% .

When a hot paper containing Zr / BaCrO ₄ is prepared by the above-described specific ingredients, content and conditions in the method of manufacturing a hot paper using the papermaking process of the present invention and the hot paper is produced through the above steps (A1) to (A4) A heat paper that meets the object of the present invention can be produced.

The present invention can provide the heat paper produced by the above-mentioned manufacturing method.

In addition, the thermal paper of the present invention may be characterized as being a thermal-ignition ignition material.

Hereinafter, the present invention will be described in more detail with reference to examples. However, the embodiments of the present invention described below are illustrative only and the scope of the present invention is not limited to these embodiments. The scope of the invention is indicated by the appended claims and includes all changes that come within the meaning and range of equivalency of the claims.

Example  One

Zirconium (Zr) powder having an average particle size of 2 μm and barium chromate (BaCrO ₄ ) powder having a particle size of 1 to 500 μm nonuniformly mixed are crushed with a ball-mill mixer, And the particle size distribution of the powder was performed. To 500 ml of water was added 12.5 g of a zirconium (Zr) powder containing 21% by weight of barium chromate (BaCrO ₄ ) powder and 79% by weight of powder of barium chromate (BaCrO ₄ ), and then using a magnetic bar for 0.5 to 1 hour Lt; _{RTI ID = 0.0} > Zr / BaCrO4 & To prepare a mixed powder.

1.0 g of the glass fiber was added to a Waring blender together with 1 L of water, and the glass fiber was dissociated twice at 16,500 rpm for 2 minutes. Then, Zr / BaCrO ₄ The mixed powder was added to the mill in an amount of 1,250 parts by weight based on 100 parts by weight of the glass fiber, and the mixture was stirred at 16,500 rpm for two minutes for two minutes to maintain the reaction time of Zr / BaCrO _{4. Then} , a slurry tank ). In order to increase the dispersibility and coagulation effect of the additives in the slurry, 2.5 parts by weight of polyacrylamide, which is a cationic organic coagulant, was added to 100 parts by weight of Zr / BaCrO ₄ mixed powder and glass fiber in a slurry tank (Stock Chest) S1) and reacted at a mechanical stirring speed of 500 rpm for 5 minutes to complete the slurry. After that, a certain amount of water was added to adjust the total amount of the slurry in the stock chest (S1) to 4L. After that, the agitated additives in the slurry were further stirred at 500 rpm for 5 minutes so that agglomeration could be solved by forced agitation. The agitated slurry was transferred to the head box S2 in accordance with the thermal basis weight and then supplied to the wire mesh S4 to form the aggregate S3 and distributed evenly, followed by natural dehydration S5 and suction dehydration S6 To form grassland. Thereafter, to obtain the opening through the drying step of recovering by crimping after the transfer to the glass fiber and the Zr / BaCrO to take off the wire mesh ₄ (S4), which are evenly distributed rollers.

Example  2

To 12.5 g of 21% by weight of zirconium (Zr) powder and 79% by weight of barium chromate (BaCrO ₄ ) powder was added to 500 ml of water and Zr / BaCrO ₄ To prepare a mixed powder. Thereafter, the glass fiber and Zr / BaCrO ₄ were mixed under the same conditions as in Example 1 to prepare a slurry, which was then transferred to a stock tank S1. In order to increase the dispersibility and coagulation effect of the additives in the slurry, glass fiber and Zr / BaCrO ₄ 5.5 parts by weight of a cationic organic coagulant was added to a stock tank (S1) in an amount of 100 parts by weight, and the glass fibers and Zr / BaCrO ₄ were added to increase the cohesion by promoting ionic bonding between the additives added in the slurry Except that 2.5 parts by weight of an anionic organic coagulant was added to a stock tank (S1) in an amount of 100 parts by weight to prepare a slurry.

Poly-diallyldimethylammonium chloride (poly-DADMAC) was used as the cationic organic coagulant and polyacrylamide (A-PAM) was used as the anionic organic coagulant.

Example  3

In order to maximize the tensile strength of the open papers by aggregating each fiber before mixing the glass fiber and Zr / BaCrO ₄ , and to maximize the properties of the additives, an inorganic coagulant, aluminum sulfate, 60 parts by weight were added to a pulverizer, and the mixture was then dissociated twice at 16,500 rpm for 2 minutes. Then, the reaction was maintained by adding Zr / BaCrO ₄ to the mixture, and then the mixture was converted into a neutral pH of 6-8 by the addition of an appropriate amount of sodium hydroxide (NaOH), followed by stirring. Under the same conditions as in Example 2, .

Comparative Example  One

A glass fiber paper was prepared by the same composition and method as in Example 3, except that Zr / BaCrO ₄ was not added in the slurry composition of Example 3 and the addition amount of glass fiber was 200 parts by weight.

Experimental Example  1: Calorimetry test

The weight of each of the three types of hot papers manufactured by the above Examples 1 to 3 was measured and then placed in a reactor in a Parr 6100 Compensated Jacket Calorimeter and filled with argon gas to keep the inside thereof in an inert atmosphere, Were measured and are shown in Table 1 and Fig.

Calories (Cal / g) Example 1 341.6 Example 2 334.5 Example 3 334.2 Comparative Example 1 0

As shown in Table 1, in Examples 1 to 3 in which Zr / BaCrO ₄ was added, the calorie value was measured, and the calorie of Example 1 was higher than in Examples 2 and 3. The results show that the Zr / BaCrO ₄ was lost together with the white water in the dehydration process in the manufacturing process because the bonding force between the glass fiber and Zr / BaCrO ₄ was low in the thermal paper slurry, And the anionic organic coagulant added in 3 was not added and the amount of the cationic organic coagulant was also lower than in Examples 2 and 3. When the cationic organic coagulant is added in an amount more than the proper amount, excessive agglomeration may occur, resulting in failure to form aggregates in the papermaking process, resulting in defective dewatering. Specifically, the closer to zero the zeta potential value, the more smoothly the condition of dewatering and dehydration becomes. Zr powder and BaCrO ₄ powder have a (-) value when zeta potential is measured, and glass fiber is also known to have a negative value. Therefore, by adding a cationic (+) organic coagulant, the zeta potential is adjusted to be close to zero. If an additional anionic organic flocculant is added thereto, the amount of the cationic organic flocculant should be appropriately adjusted for the above reasons. In this case, when the anionic organic flocculant is added in an amount outside the proper amount, the heat capacity and the combustion rate, which are the characteristics of the thermal paper, may be affected and the reliability of the thermal battery may be deteriorated. On the other hand, the calorific value of Comparative Example 1 was not obtained because Zr / BaCrO ₄ was not added in the slurry production process. Therefore, the heat paper produced by the methods of Examples 1 to 3 of the present invention can be regarded as a result of adding the organic coagulant or the inorganic coagulant, thereby consuming the amount of heat added.

Experimental Example  2: Burning rate measurement test

The burning speeds of the hot paper prepared in Examples 1 to 3 and Comparative Example 1 of the present invention were measured and shown in Table 2 and FIG. The measurement was performed using an Infiniium Oscilloscope (manufactured by Agilent Technologies). The burning rate test method is as shown in the figure below. After measuring the length of the prepared open papers, tin was placed under both sides of the open papers, the power supply was connected, current was passed, and data was measured by connecting an oscilloscope. At this time, if Igniter is used to ignite the heat, the time difference is generated while melting the tin, and the burning rate is obtained by dividing the time by the length of the heat.

Length time Burning rate Example 1 4.2 0.253 16.6 Example 2 4.3 0.720 6.0 Example 3 3.5 0.602 5.8 Comparative Example 1 4.2 0 0

Unit: cm, s, cm / s

As in the results of Table 2, in Examples 1 to 3 in which Zr / BaCrO ₄ was added, the burning rate was measured, but unlike the calorimetry of Experimental Example 1, which showed similar results, the same amount of Zr / BaCrO ₄ was added And the combustion speeds in Examples 1 to 3 showed a large deviation range. From the above results, it is considered that not only the mutual bonding of the glass fiber and Zr / BaCrO ₄ is well performed in the hot slurry produced by the method of Example 1, but Zr / BaCrO ₄ is uniformly distributed even on the heat-sealed surface. However, since the addition amount of the inorganic coagulant or the organic coagulant added by the method of Example 2 or Example 3 is increased, the Zr / BaCrO ₄ is not uniformly distributed on the heat paper surface and the excessive aggregation of the glass fiber and Zr / BaCrO ₄ It is thought that the above result appears. On the other hand, since the glass fiber paper of Comparative Example 1 did not contain Zr / BaCrO ₄ , which is an ignition agent, the burning rate value could not be obtained by ignition.

Experimental Example  3: Open ignition sensitivity and heat source ignition test

The thermal sensitivity of the glass fiber paper prepared in the methods of Examples 1 to 3 and the glass fiber paper prepared in Comparative Example 1 and the heat source ignition test were shown in Tables 3 and 5A and 5B. In this experiment, an experiment was conducted to measure the ignition sensitivity of the thermal paper using a laser output, and an experiment to ignite the heat source by transferring the combustion energy after igniting the thermal paper under a heat paper.

Open ignition sensitivity Heat source ignition Laser output Test result Example 1 1W 10ms ignition ignition Example 2 1W 10ms ignition ignition Example 3 1W 10ms ignition ignition Comparative Example 1 1W 10ms Ignition Ignition

As shown in Table 3, in Examples 1 to 3, thermal paper was ignited in an ignition sensitivity test using a laser output, and a desired performance was shown in a heat source ignition test. On the other hand, in Comparative Example 1, the heat source could not be ignited due to the ignition of the glass fiber paper. The reason for the above results is considered to be the same as that described in Experimental Examples 1 and 2. [

Experimental Example  4: Observation of open surface

In order to observe the bonding state between the glass fiber and Zr / BaCrO _{4 in the} hot paper prepared in Examples 1 to 3, a surface photograph was taken and they are shown in FIGS. 6A, 6B and 6C, respectively. Zr / BaCrO ₄ is a fiber having smooth surface and uniform diameter and being adhered and dispersed in powder form. The shape of the glass fibers did not change during the slurry production process, but Zr / BaCrO ₄ shows that the particles are finely divided during the mixing and grinding process. In order for the thermal paper to have excellent thermal properties, it must have good bond strength with sufficient strength to transmit the stress between the glass fiber and Zr / BaCrO ₄ . However, the glass fiber subjected to the heat treatment process had insufficient adhesion with Zr / BaCrO ₄ due to crystallization and no hydroxyl group. Therefore, the mutual coupling between the glass fiber and the Zr / BaCrO the _four interface rather than combining physical fiberglass and Zr / BaCrO ₄ chemical bond cross-linked fibers and the powder by increasing the hold also induces (Cross-linked bond) of It was found that it was done.

Sl - Slurry tank
S2 - Headbox
S3 - coalesced (open slurry)
S4 - Wire Mesh
S5 - natural dehydration
S6 - Suction and dehydration
S7 - Baidu

Claims (13)

(A1) Zirconium (Zr) powder as a fuel and barium chromate (BaCrO ₄ ) powder as an oxidizer are classified into a size of 1 to 100 μm and then mixed to prepare Zr / BaCrO ₄ Preparing a mixed powder;
(A2) mixing and stirring the prepared Zr / BaCrO ₄ mixed powder and glass fiber, and adding at least one selected from the group consisting of a cationic organic coagulant, an anionic organic coagulant and an inorganic coagulant as an coagulant to prepare a slurry ;
(A3) obtaining a thermal paper by using a paper-making process as the slurry; And
(A4) A method of producing a heat paper comprising pressing the obtained hot paper to recover it. The method according to claim 1, wherein the flocculant in step (A2) is a cationic organic flocculant. The method of claim 1, wherein the flocculant in step (A2) is a cationic organic flocculant and an anionic organic flocculant. The method of claim 1, wherein the slurry is prepared by mixing the glass fiber and the inorganic flocculant in the step (A2) and adding the Zr / BaCrO ₄ mixed powder, the cationic organic flocculant, and the anionic organic flocculant. A method of manufacturing a hot paper. The method according to claim 1, wherein the Zr / BaCrO ₄ Wherein the mixed powder comprises 15 to 30 wt% of zirconium (Zr) powder and 70 to 85 wt% of barium chromate (BaCrO ₄ ) powder. The method according to claim 1, wherein the Zr / BaCrO ₄ The mixed powder was prepared by mixing the Zr / BaCrO ₄ Wherein the mixed powder is contained in an amount of 1000 to 1500 parts by weight. The method of claim 1, wherein the cationic organic coagulant is selected from the group consisting of poly-diallyldimethylammonium chloride (poly-DADMAC), cationic polyacrylamide and polymethylmethacrylate (PMMA) And Zr / BaCrO ₄ Wherein the cationic organic coagulant is contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the mixed powder and the glass fiber. The anionic organic coagulant according to claim 1, wherein the anionic organic coagulant is at least one selected from the group consisting of anionic polyacrylamide (A-PAM), bentonite, and silica, and Zr / BaCrO ₄ Wherein the anionic organic coagulant is contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the mixed powder and the glass fiber. The inorganic flocculant according to claim 1, wherein the inorganic flocculant is at least one member selected from the group consisting of aluminum sulfate, aluminum chloride and iron chloride, and the inorganic flocculant is contained in an amount of 40 to 80 parts by weight based on 100 parts by weight of the glass fiber / RTI > The method according to claim 1, wherein the average length of the glass fibers is 1 to 10 mm. The method according to claim 1, wherein the moisture content of the hot paper obtained in the step (A4) is 50 to 100%. 11. A hot paper produced by the method of any one of claims 1 to 11. The thermal paper according to claim 12, wherein the thermal paper is an ignition material for thermal transfer.

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