CN112137163A - A kind of blend material and its preparation method and use - Google Patents

Abstract

The invention relates to and discloses a blended material and its preparation method and use. A blended material includes at least two of polylactic acid, polyglycolide, polyglycolide, polyethylene, polypropylene, polyvinyl alcohol and polycaprolactone, and the blended material is doped with aluminum pink. A preparation method of a blended material, comprising mixing the polylactic acid, the polyglycolide, the polyglycolide, the polyethylene, the polypropylene, the polyvinyl alcohol and the poly At least two or more of caprolactone are mixed, and then the resulting mixture is doped with the aluminum powder. And the use of the above-mentioned blended material according to the present invention and the blended material prepared by the above-mentioned method of the present invention in the preparation of a new type of mouth stick for tobacco products. The blended material of the invention has high cooling efficiency, low glass transition temperature, good thermal conductivity and heat storage performance, simple and efficient preparation process, wide application and good safety.

Description

A kind of blend material and its preparation method and use

technical field

The invention relates to a blended material, a preparation method and application thereof, and belongs to the technical field of cigarettes.

Background technique

Low-temperature cigarettes heat the tobacco through external heating elements. The atomizing medium in the cigarette, the aroma components in the tobacco and the external aroma are heated to generate smoke instead of burning, which reduces the burning and thermal degradation of tobacco in traditional cigarettes. Hazardous soot components of known types produced. In a low temperature cigarette heated by an external heat source, an important component is the cigarette of the heated cigarette, which is a tobacco product capable of releasing smoke aerosol under the condition of low temperature heating. The tobacco product reaches the atomization temperature under the condition of 250-350°C (degree Celsius), and the temperature of the high-temperature atomized smoke entering the oral cavity through the filter segment will be higher than the burning temperature of ordinary cigarettes. The key to low temperature cigarettes is to develop cigarettes with suitable temperature.

The existing low-temperature cigarette cooling technology mainly uses the tip rod material to cool the high-temperature flue gas flowing in the longitudinal direction. Due to the fast passage time of the flue gas, high cooling efficiency of the cooling material is required. However, in the prior art, PLA (polylactic acid) material is mainly used for cooling, and the glass transition temperature of the polylactic acid material is 60-65° C. After the polylactic acid material absorbs the heat of the flue gas, a phase transition occurs at this temperature, so that the flue gas undergoes a phase change. temperature decreases. However, since the phase transition temperature of the polylactic acid material is 60-65°C, the lowest temperature that the flue gas temperature can fall to is the phase transition temperature of the polylactic acid material, which hinders the further reduction of flue gas temperature, and has a high cooling efficiency. certain limitations. Phase change materials are latent heat storage materials capable of absorbing and releasing high amounts of latent heat during melting and crystallization, respectively. Thermal energy transfer occurs when a phase change material transitions from a solid phase to a liquid phase or vice versa. During such a phase change material phase change, the temperature of the phase change material remains nearly constant, as does the space surrounding the phase change material, the heat flowing through the phase change material being "trapped" within the phase change material itself. Since the thermal conductivity of phase change materials is usually relatively low (for example, the thermal conductivity of polylactic acid material is 0.025W/m·K (W/m·degree), the glassy material will affect the material that cannot be in direct contact with the flue gas. At the same time, the thermal conductivity of the phase change material is small, resulting in a slow response of the phase change material to heat changes. The low density of the phase change material results in a low heat storage capacity per unit volume of the phase change material.

SUMMARY OF THE INVENTION

In view of the above problems, the purpose of the present invention is to provide a blended material, a preparation method of the blended material, and the use of the blended material, which can improve the cooling efficiency of the flue gas.

In order to achieve the above object, on the one hand, the present invention provides a blended material comprising at least one of polylactic acid, polyglycolide, polyglycolide, polyethylene, polypropylene, polyvinyl alcohol and polycaprolactone. Two kinds, the blend material is doped with aluminum powder.

In a specific embodiment, based on the total weight of the blended material, the content of the aluminum powder is 0.001-0.1 wt %.

In a specific embodiment, the median diameter of the aluminum powder particles is 5-100 microns.

In a specific embodiment, based on the total weight of the blended material, the content of the polylactic acid is 5-75 wt %.

In a specific embodiment, based on the total weight of the blended material, the content of the polyethylene lactide is 2-75 wt %.

In a specific embodiment, the content of the polyglycolide is 2-75 wt % based on the total weight of the blended material.

In a specific embodiment, the content of the polyethylene is 3-85 wt % based on the total weight of the blended material.

In a specific embodiment, the content of the polypropylene is 5-85 wt % based on the total weight of the blended material.

In a specific embodiment, based on the total weight of the blended material, the content of the polyvinyl alcohol is 5-65 wt %.

In a specific embodiment, the content of the polycaprolactone is 5-65 wt % based on the total weight of the blended material.

In a specific embodiment, the glass transition temperature of the blended material is 48-57 degrees Celsius.

In a specific embodiment, the heat storage coefficient of the blended material is 1-4 watts/square meter·degree.

In a specific embodiment, the thermal conductivity of the blended material is 0.1-0.337 W/m·degree.

In another aspect, the present invention provides a method for preparing the above blended material according to the present invention, comprising the steps of: mixing the polylactic acid, the polyglycolide, the polyglycolide, the polyglycolide At least two of ethylene, the polypropylene, the polyvinyl alcohol, and the polycaprolactone are mixed, and then the resulting mixture is doped with the aluminum powder.

In yet another aspect, the present invention provides the use of the above-mentioned blended material according to the present invention and the blended material prepared according to the above-mentioned method of the present invention in the preparation of a new mouthpiece for tobacco products.

In a specific embodiment, the nozzle rod includes a film cooling section, and the film cooling section includes a filter rod whose film is formed by a paper rod process.

In a specific embodiment, the film is made of the blended material.

In a specific embodiment, the thickness of the thin film is 20-60 microns.

In a specific embodiment, the nozzle rod includes a firmware cooling section, the firmware cooling section includes a firmware, and the firmware includes a shell with two hollow ends, and two holes with holes are provided at intervals inside the shell. filter plate.

In a specific embodiment, both the shell and the two filter plates with holes are made of the blended material.

In a specific embodiment, the low temperature cigarette smoke temperature of the mouth stick is lower than the low temperature cigarette smoke temperature of the mouth stick made of polylactic acid material.

In a specific embodiment, the temperature of the side surface of the mouth stick where the lips contact is lower than the temperature of the side surface of the mouth stick made of polylactic acid material where the lips contact.

On the basis of the above blended materials, the present invention provides a mouthpiece, the mouthpiece comprises a first hollow rod segment near the cut tobacco segment and a first cellulose acetate rod segment near the mouth end, where the first hollow rod A film cooling section is arranged between the section and the first described cellulose acetate rod section, and the film cooling section includes a filter rod whose film is formed by a paper rod process, and the film is made of the blended material.

On the basis of the above mouth stick, the present invention further provides a mouth stick, the mouth stick includes a second hollow rod segment close to the cut tobacco segment and a second cellulose acetate rod segment close to the mouth end, where the second hollow stick A firmware cooling section is arranged between the section and the second cellulose acetate rod section, and the firmware cooling section includes a firmware, and the firmware includes a shell with hollow ends, and two filter plates with holes are arranged at intervals in the shell. , the shell and the two filter plates with holes are made of the blended material.

The present invention has the following advantages due to the adoption of the above technical solutions: 1. The blended material of the present invention has high cooling efficiency, low glass transition temperature, and good thermal conductivity and heat storage performance. 2. The blended material of the present invention can improve the physical properties of the phase change material. 3. The preparation method of the blended material of the present invention is simple and efficient, and does not require investment in complicated processes and equipment. 4. The smoke temperature of the low-temperature cigarette of the mouth stick of the present invention is lower than the smoke temperature of the low-temperature cigarette of the mouth stick made of polylactic acid material, and the temperature of the side surface where the lips of the mouth stick contact is lower than that of the mouth stick made of polylactic acid material. The temperature of the side surface where the lips of the stick contact, the cooling efficiency of the mouth stick is high, the cooling effect is good, and the safety is good.

Other features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the description, claims and drawings.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings required in the description of the embodiments:

Fig. 1 is the schematic flow sheet of a specific embodiment of the preparation method of the blend material of the present invention;

2 is a schematic structural diagram of firmware in a specific embodiment of the present invention;

3 is a schematic plan view of a filter plate with holes in a specific embodiment of the present invention.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples, so as to fully understand and implement the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects. It should be noted that, as long as there is no conflict, each embodiment of the present invention and each feature of each embodiment can be combined with each other, and the formed technical solutions all fall within the protection scope of the present invention.

On the one hand, the blend material proposed by the present invention includes at least two of polylactic acid, polyglycolide, polyglycolide, polyethylene, polypropylene, polyvinyl alcohol and polycaprolactone, and in the blend material Doped with aluminum powder.

In a specific embodiment, the content of the aluminum powder is 0.001-0.1 wt % based on the total weight of the blended material. Among them, the heat storage coefficient of aluminum powder is 191 watts/square meter. The thermal conductivity of aluminum powder is 237 W/m·degree.

In a specific embodiment, the median diameter of the aluminum powder particles is 5-100 microns (D50, the particle size corresponding to when the cumulative particle size distribution percentage of the aluminum powder particles reaches 50%).

In a specific embodiment, the content of polylactic acid is 5-75 wt % based on the total weight of the blended material.

In a specific embodiment, based on the total weight of the blended material, the content of polyglycolide is 2-75 wt %.

In a specific embodiment, the content of polyglycolide is 2-75 wt % based on the total weight of the blended material.

In a specific embodiment, the content of polyethylene is 3-85 wt % based on the total weight of the blended material.

In a specific embodiment, the content of polypropylene is 5-85 wt % based on the total weight of the blended material.

In a specific embodiment, the content of polyvinyl alcohol is 5-65 wt % based on the total weight of the blended material.

In a specific embodiment, the content of polycaprolactone is 5-65 wt % based on the total weight of the blended material.

In a specific embodiment, the glass transition temperature of the blended material is 48-57°C (degrees Celsius).

In a specific embodiment, the heat storage coefficient of the blended material is 1˜4 W/(m ² ·K) (W/square meter·degree).

In a specific embodiment, the thermal conductivity of the blended material is 0.1-0.337 W/(m·K) (W/m·degree).

The blended material of the invention has high cooling efficiency, low glass transition temperature, and good thermal conductivity and heat storage performance.

On the other hand, as shown in Figure 1, the preparation method of the blend material proposed by the present invention comprises the following steps: mixing polylactic acid, polyglycolide, polyglycolide, polyethylene, polypropylene, polyvinyl alcohol and At least two of the polycaprolactones are mixed, and the resulting mixture is then doped with aluminum powder.

In a specific embodiment, the mixing of polylactic acid, polyglycolide, polyglycolide, polyethylene, polypropylene, polyvinyl alcohol and polycaprolactone can be performed in any order according to actual needs.

In a specific embodiment, according to actual needs, at least two of polylactic acid, polyglycolide, polyglycolide, polyethylene, polypropylene, polyvinyl alcohol and polycaprolactone are selected and mixed to form a mixture . The mixture is thus made to have the desired physical properties. For example, the blended material has the advantages of low glass transition temperature, high cooling efficiency, and good thermal conductivity and heat storage performance.

The preparation method of the blended material of the present invention is simple and efficient, and does not require investment in complicated processes and equipment.

In yet another aspect, the present invention provides the use of the above-mentioned blended material according to the present invention and the blended material prepared according to the above-mentioned method of the present invention in the preparation of a new mouthpiece for tobacco products.

In a specific embodiment, the nozzle rod includes a film cooling section, and the film cooling section includes a filter rod whose film is formed by a paper rod process.

In a specific embodiment, the film is made of blended materials.

In a specific embodiment, the thickness of the thin film is 20-60 μm (microns).

In a specific embodiment, the nozzle rod includes a firmware cooling section, the firmware cooling section includes a firmware 1, the firmware includes a shell 11 with hollow ends at both ends, and two perforated filter plates 12 are provided at intervals inside the shell 11 (as shown in FIG. 2, as shown in Figure 3).

In a specific embodiment, both the shell 11 and the two filter plates 12 with holes are made of blended materials.

In a specific embodiment, as shown in FIG. 2 and FIG. 3 , there are a plurality of ventilation holes 2 in the two filter plates 12 with holes respectively, which can improve the cooling effect.

In a specific embodiment, as shown in FIG. 3 , the plurality of ventilation holes 2 on the two filter plates 12 with holes are arranged at equal intervals along the circumferential direction.

In a specific embodiment, the low temperature cigarette smoke temperature of the mouth stick is lower than the low temperature cigarette smoke temperature of the mouth stick made of polylactic acid material.

In a specific embodiment, the temperature of the side surface of the mouth stick where the lips contact is lower than the temperature of the side surface of the mouth stick made of polylactic acid material where the lips contact.

In a specific embodiment, the novel tobacco product is a low temperature cigarette.

The blended material of the invention has wide application and good safety.

On the basis of the above blended materials, the present application proposes a mouthpiece, the mouthpiece includes a first hollow rod section close to the cut tobacco section and a first cellulose acetate rod section close to the mouth end, between the first hollow rod section and the first hollow rod section A film cooling section is arranged between the acetate fiber rod sections, and the film cooling section includes a filter rod whose film is formed by a paper rod process, and the film is made of blended materials.

On the basis of the above mouth stick, the application further proposes a mouth stick, the mouth stick includes a second hollow rod segment close to the cut tobacco segment and a second cellulose acetate rod segment close to the mouth end. A firmware cooling section is arranged between the acetate fiber rod sections, and the firmware cooling section includes a firmware 1 (as shown in Figure 2 and Figure 3 ), and the firmware 1 includes a shell 11 with hollow ends, and two belts are arranged at intervals in the shell 11. The perforated filter plate 12, the shell 11 and the two perforated filter plates 12 are all made of blended materials.

Two specific embodiments are listed below

Example 1

In the blend material in this example, the content of polylactic acid (PLA) is 55% by weight, the content of polyglycolide (PLGA) is 2% by weight, the content of polyethylene (PE) is 18% by weight, and the content of polyethylene (PE) is 18% by weight. The content of alcohol (PVA) was 15% by weight, and the content of polycaprolactone (PCL) was 10% by weight. In the blend material, 0.01% by weight of aluminum powder was doped.

Further, the particle size of the aluminum powder was 20 microns (D50 diameter).

Further, the glass transition temperature of the blended material is 52 degrees Celsius, the thermal storage coefficient is 1.2 W/m2·degree, and the thermal conductivity is 0.213 W/m·degree.

Further, a film with a thickness of 40 microns was prepared by using the blended material, and the film was prepared according to the paper rod process to prepare the film cooling section of the nozzle rod.

Among them, the mouth stick with the film cooling section, compared with the mouth stick with the polylactic acid film cooling section, the smoke temperature of the low-temperature cigarette is reduced by 2.5 degrees Celsius. Compared with the mouth stick with the polylactic acid film cooling section, the temperature of the side surface of the mouth stick where the lips contact (10 mm from the tail of the mouth stick) is reduced by 1.8 degrees Celsius.

Embodiment 2

On the basis of the above-mentioned embodiment, in the blend material in this embodiment, the content of polylactic acid (PLA) is 35% by weight, the content of polyglycolide (PLGA) is 12% by weight, and the content of polyethylene (PE) is 35% by weight. The content was 10% by weight, the content of polyvinyl alcohol (PVA) was 10% by weight, and the content of polycaprolactone (PCL) was 33% by weight. In this blend material, 0.03% by weight of aluminum powder was doped.

Further, the particle size of the aluminum powder was 20 microns (D50 diameter).

Further, the glass transition temperature of the blended material is 48 degrees Celsius, the thermal storage coefficient is 3.2 W/m2·degree, and the thermal conductivity is 0.153 W/m·degree.

Further, a blended material is used to prepare a firmware 1. The firmware 1 includes a shell 11 with two hollow ends, and two filter plates 12 with holes are arranged at intervals inside the shell 11 (as shown in Fig. 2 and Fig. 3 ).

Further, the firmware cooling section of the nozzle rod is prepared by using the firmware.

Among them, the mouth stick with the firmware cooling section, compared with the mouth stick with the polylactic acid film cooling section, the smoke temperature of the low-temperature cigarette is reduced by 3.8 degrees Celsius. For the mouth stick with the firmware cooling section, the temperature of the side surface of the mouth stick where the lips touch (10 mm from the tail of the mouth stick) is reduced by 3.2 degrees Celsius compared with the mouth stick with the polylactic acid film cooling section.

Although the disclosed embodiments of the present invention are as above, the content described is only an embodiment adopted to facilitate understanding of the present invention, and is not intended to limit the present invention. Any person skilled in the art to which the present invention belongs, without departing from the spirit and scope disclosed by the present invention, can make any modifications and changes in the form and details of the implementation, but the scope of patent protection of the present invention, The scope as defined by the appended claims shall still prevail.

Claims (22)

1. The blending material is characterized by comprising at least two of polylactic acid, polyethylene propylene crosspolymer, polyethylene, polypropylene, polyvinyl alcohol and polyhexamethylene lactone, and aluminum powder is doped in the blending material.

2. The blend material according to claim 1, wherein the aluminum powder is contained in an amount of 0.001 to 0.1 wt% based on the total weight of the blend material.

3. The blend material according to claim 1 or 2, wherein the median diameter of the aluminum powder particles is 5 to 100 μm.

4. The blend material according to claim 3, wherein the polylactic acid is contained in an amount of 5 to 75 wt% based on the total weight of the blend material.

5. The blend material according to claim 4, wherein the content of the cross-linked polyethylene propylene is 2 to 75 wt% based on the total weight of the blend material.

6. The blend material according to claim 5, wherein the amount of the polyethylene resin is 2 to 75 wt% based on the total weight of the blend material.

7. The blend material according to claim 6, wherein the polyethylene is present in an amount of 3 to 85 wt.%, based on the total weight of the blend material.

8. The blend material according to claim 7, wherein the polypropylene is present in an amount of 5 to 85 wt.%, based on the total weight of the blend material.

9. The blend material according to claim 8, wherein the polyvinyl alcohol is present in an amount of 5 to 65 wt.%, based on the total weight of the blend material.

10. The blend material according to claim 9, wherein the polyhexamethylene lactone is present in an amount of 5 to 65 wt.%, based on the total weight of the blend material.

11. The blend material of claim 1, wherein the blend material has a glass transition temperature of 48 to 57 degrees celsius, a heat storage coefficient of 1 to 4 watts per square meter per degree celsius, and a thermal conductivity of 0.1 to 0.337 watts per meter per degree celsius.

12. A method of making the blended material of any of claims 1-11, comprising the steps of: mixing at least two of the polylactic acid, the polyethylene propylene crosspolymer, the polyethylene, the polypropylene, the polyvinyl alcohol and the polyhexamethylene lactone, and then doping the obtained mixture with the aluminum powder.

13. Use of the blended material according to any one of claims 1 to 11 and the blended material prepared according to the process of claim 12 in a novel filter rod for a tobacco product.

14. Use according to claim 13, wherein the filter rod comprises a film cooling section comprising a filter rod of film formed in a paper rod process.

15. Use according to claim 14, characterized in that the film is made of the blended material.

16. Use according to claim 14, wherein the film has a thickness of 20 to 60 μm.

17. The use according to claim 13, wherein the filter rod comprises a firmware cooling section comprising a firmware having a hollow housing with two ends, two perforated filter plates being spaced apart inside the housing.

18. Use according to claim 17, wherein both the housing and the perforated filter plates are made of the blended material.

19. The use according to claim 13, wherein the low temperature cigarette smoke temperature of the filter rod is lower than the low temperature cigarette smoke temperature of a filter rod made of polylactic acid material.

20. Use according to claim 13, wherein the temperature of the side surface of the mouth wand at which the lips come into contact is lower than the temperature of the side surface of the mouth wand made of polylactic acid material at which the lips come into contact.

21. A filter rod, characterized in that the filter rod comprises a first hollow rod segment close to a tobacco shred segment and a first acetate fiber rod segment close to a mouth end, a film cooling segment is arranged between the first hollow rod segment and the first acetate fiber rod segment, the film cooling segment comprises a filter rod formed by a film according to a paper rod process, and the film is made of the blended material according to any one of claims 1-11 and the blended material prepared by the method according to claim 12.

22. A filter rod, wherein the filter rod comprises a second hollow rod section close to a tobacco shred section and a second acetate fiber rod section close to a mouth end, a firmware cooling section is arranged between the second hollow rod section and the second acetate fiber rod section, the firmware cooling section comprises firmware, the firmware comprises a shell with two hollow ends, two perforated filter plates are arranged in the shell at intervals, and the shell and the two perforated filter plates are both made of the blended material according to any one of claims 1-11 and the blended material prepared by the method according to claim 12.

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