Heat-resistant PVC (polyvinyl chloride) pneumatic membrane and preparation method thereof

Abstract

The invention discloses a heat-resistant PVC (polyvinyl chloride) pneumatic membrane and a preparation method thereof, and relates to the field of PVC materials, and the heat-resistant PVC pneumatic membrane comprises the following raw materials in parts by weight: 80-120 parts of PVC; 10 to 20 parts of modified aluminum hydroxide; 10 to 30 parts of ABS resin; 2-6 parts of a stabilizer; the aluminum hydroxide is prepared from the following raw materials: corn fiber, distilled water, absolute ethyl alcohol, stearic acid, starch, glycerol and aluminum hydroxide. The heat-resistant PVC pneumatic membrane has the advantage that heat resistance of the PVC pneumatic membrane is improved.

Description

Technical Field

[0001] The invention relates to the field of PVC materials, in particular to a heat-resistant PVC inflation film and a preparation method thereof. Background Art

[0002] PVC inflatable film is widely used in advertising, construction, outdoor facilities and other fields due to its good flexibility, transparency and processing performance.

[0003] However, traditional PVC inflatable membranes are prone to deformation, softening, or even rupture at higher temperatures, which severely limits their application in high-temperature environments or situations that require long-term heat resistance. Summary of the invention

[0004] In order to improve the heat resistance of a PVC inflatable film, the present application provides a heat-resistant PVC inflatable film and a preparation method thereof.

[0005] In the first aspect, the heat-resistant PVC inflatable membrane provided by the present application adopts the following technical solution: A heat-resistant PVC inflatable film comprises the following raw materials in parts by weight: 80-120 parts of PVC; 10-20 parts of modified aluminum hydroxide; 10-30 parts of ABS resin; 2-6 parts of stabilizer; and 30-40 parts of plasticizer. The aluminum hydroxide is made from the following raw materials: corn fiber, distilled water, anhydrous ethanol, stearic acid, starch, glycerin and aluminum hydroxide.

[0006] By adopting the above technical scheme, PVC is used as the main raw material, and modified aluminum hydroxide and ABS resin are used as fillers, which has higher thermal stability. The memory groups in the ABS resin interact with PVC and modified aluminum hydroxide to form a more stable network structure, thereby improving the heat resistance of the PVC inflatable film.

[0007] Preferably, the preparation method of the modified aluminum hydroxide is: 5-15 parts by weight of corn fiber, 20-40 parts by weight of distilled water and 50-100 parts by weight of anhydrous ethanol are mixed and ultrasonicated, and then 5-10 parts by weight of stearic acid are added and ultrasonicated, and then heated and stirred, centrifuged, washed, and dried; then 5-10 parts by weight of starch, 10-30 parts by weight of glycerol and 10-20 parts by weight of aluminum hydroxide are added, heated, mixed, stirred, filtered, and dried to obtain the modified aluminum hydroxide.

[0008] By adopting the above technical scheme, the present application uses starch as a film-forming matrix, aluminum hydroxide and corn fiber as reinforcing materials to improve the mechanical properties of the PVC inflatable film. Glycerol makes the modified aluminum hydroxide compatible with other components and strengthens the hydrogen bonding effect, thereby making the PVC inflatable film have good mechanical properties and thermal stability.

[0009] Preferably, the weight ratio of the corn fiber, starch and aluminum hydroxide is 1:(0.6-0.7):(1.4-1.8).

[0010] By adopting the above technical scheme, when corn fiber, starch and aluminum hydroxide are in a specific weight ratio, the three work together, starch strengthens the combination between corn fiber and aluminum hydroxide, further improves the heat resistance of aluminum hydroxide, so that the modified aluminum hydroxide can further improve the heat resistance of PVC inflatable film, while highlighting the biological activity of corn fiber and improving the antibacterial properties of PVC inflatable film.

[0011] Preferably, the ABS resin is a modified ABS resin, and the preparation method of the modified ABS resin is: fully stir 3-5 parts by weight of dicyandiamide curing agent and 2-4 parts by weight of accelerator with 70-80 parts by weight of ABS resin, then add 20-30 parts by weight of epoxy resin and 10-20 parts by weight of water, stir evenly, and dry to obtain the modified ABS resin.

[0012] By adopting the above technical scheme, ABS resin forms a structure with high heat resistance through the curing reaction of dicyandiamide curing agent and accelerator, thereby improving the heat resistance of PVC inflatable membrane; at the same time, the combination of ABS resin and epoxy resin can increase the mechanical strength of PVC inflatable membrane, thereby improving the impact resistance of PVC inflatable membrane.

[0013] Preferably, the weight ratio of the ABS resin, epoxy resin and dicyandiamide curing agent is (14.4-14.8): (4.8-5.4): 1.

[0014] By adopting the above technical scheme, when ABS resin, epoxy resin and dicyandiamide curing agent are in a specific weight ratio, the heat deformation temperature and heat resistance of the PVC film can be improved after the dicyandiamide curing agent reacts with the epoxy resin. At the same time, the epoxy resin acts as an adhesive to improve the bonding strength between the PVC film and the ABS resin, thereby improving the impact resistance and corrosion resistance of the PVC inflatable film.

[0015] Preferably, the weight ratio of the PVC, modified aluminum hydroxide and modified ABS resin is 1:(0.16-0.18):(0.23-0.25).

[0016] By adopting the above technical scheme, when PVC, modified aluminum hydroxide and modified ABS resin are in a specific weight ratio, adding modified ABS resin and modified aluminum hydroxide can improve the processing fluidity of PVC, help to improve the mechanical strength and heat resistance of PVC, and the three work together to effectively improve the antibacterial properties of PVC inflatable membrane.

[0017] Preferably, the degree of polymerization of the PVC is 1300-2000.

[0018] Preferably, the plasticizer is dibutyl phthalate.

[0019] Preferably, the stabilizer is dibutyltin dilaurate.

[0020] By adopting the above technical solution, selecting suitable PVC as the base material, and selecting the plasticizer and stabilizer are helpful to produce a PVC inflatable film with good heat resistance.

[0021] In the second aspect, the present application provides a method for preparing a heat-resistant PVC inflatable film, which adopts the following technical scheme: a method for preparing a heat-resistant PVC inflatable film, comprising the following steps: mixing and stirring PVC, modified aluminum hydroxide, a stabilizer, and a plasticizer, adding ABS resin to blend after cooling, and obtaining the heat-resistant PVC inflatable film after calendering.

[0022] By adopting the above technical solution, the PVC inflatable film with high heat resistance can be obtained by simply mixing various raw materials and then calendering to obtain the PVC inflatable film.

[0023] In summary, this application has the following beneficial technical effects: 1. PVC as the main raw material, modified aluminum hydroxide and ABS resin as fillers have high thermal stability. The memory groups in ABS resin interact with PVC and modified aluminum hydroxide to form a more stable network structure, thereby improving the heat resistance of PVC inflatable membrane.

[0024] 2. This application uses starch as a film-forming matrix, aluminum hydroxide and corn fiber as reinforcing materials to improve the mechanical properties of the PVC inflatable film. Glycerol makes the modified aluminum hydroxide compatible with other components and strengthens the hydrogen bonding effect, thereby making the PVC inflatable film have good mechanical properties and thermal stability.

[0025] 3. When corn fiber, starch and aluminum hydroxide are in a specific weight ratio, the three work together. Starch strengthens the combination between corn fiber and aluminum hydroxide, further improving the heat resistance of aluminum hydroxide, so that the modified aluminum hydroxide can further improve the heat resistance of PVC inflatable film, while highlighting the biological activity of corn fiber and improving the antibacterial properties of PVC inflatable film. DETAILED DESCRIPTION

[0026] The present application is further described in detail below with reference to the embodiments and comparative examples: Example

[0027] Example 1 A method for preparing a heat-resistant PVC inflatable film comprises the following steps: 80g PVC, 10g modified aluminum hydroxide, 2g stabilizer, and 30g plasticizer were put into a high-speed mixer and mixed and stirred at 70°C for 30 minutes. After cooling to room temperature, 10g ABS resin was added and blended at 90°C for 20 minutes. The mixture was transferred to a twin-screw extruder and extruded and granulated at 200°C. The mixture was then calendered at 150°C and 20m / min by a calendering wheel, cooled to 20°C, cut, and rolled to obtain a heat-resistant PVC inflatable film. The stabilizer was dibutyltin dilaurate, the plasticizer was dibutyl phthalate, the ABS resin was purchased from BASF of Germany, with a grade of 2802HD, and the PVC was purchased from LG Chemical of South Korea, with a degree of polymerization of 1550.

[0028] The preparation method of the modified aluminum hydroxide is as follows: 5g corn fiber, 20g distilled water and 50g anhydrous ethanol are mixed and ultrasonicated for 30 minutes, 5g stearic acid is added and ultrasonicated for 30 minutes, the mixture is heated to 80°C and stirred in a constant temperature magnetic stirrer for 8 hours, and then transferred to a centrifuge, centrifuged at a speed of 10000r / min for 10 minutes, washed with anhydrous ethanol, and dried in an oven at 50°C for 24 hours; 5g starch, 10g glycerol and 10g aluminum hydroxide are added, heated to 90°C, mixed and stirred for 30 minutes, filtered and dried for 24 hours to obtain the modified aluminum hydroxide.

[0029] Example 2 A method for preparing a heat-resistant PVC inflatable film comprises the following steps: 120g PVC, 20g modified aluminum hydroxide, 6g stabilizer, and 40g plasticizer were put into a high-speed mixer and mixed and stirred at 70°C for 30 minutes. After cooling to room temperature, 30g ABS resin was added and blended at 90°C for 20 minutes. The mixture was transferred to a twin-screw extruder and extruded and granulated at 200°C. The mixture was then calendered at 150°C and 20m / min by a calendering wheel, cooled to 20°C, slit, and rolled to obtain a heat-resistant PVC inflatable film. The stabilizer was dibutyltin dilaurate, the plasticizer was dibutyl phthalate, the ABS resin was purchased from BASF of Germany, with a grade of 2802HD, and the PVC was purchased from LG Chemical of South Korea, with a degree of polymerization of 1550.

[0030] The preparation method of the modified aluminum hydroxide is as follows: 5g corn fiber, 20g distilled water and 50g anhydrous ethanol are mixed and ultrasonicated for 30 minutes, 5g stearic acid is added and ultrasonicated for 30 minutes, the mixture is heated to 80°C and stirred in a constant temperature magnetic stirrer for 8 hours, and then transferred to a centrifuge, centrifuged at a speed of 10000r / min for 10 minutes, washed with anhydrous ethanol, and dried in an oven at 50°C for 24 hours; 5g starch, 10g glycerol and 10g aluminum hydroxide are added, heated to 90°C, mixed and stirred for 30 minutes, filtered and dried for 24 hours to obtain the modified aluminum hydroxide.

[0031] Example 3 A method for preparing a heat-resistant PVC inflatable film comprises the following steps: 100g PVC, 15g modified aluminum hydroxide, 4g stabilizer, and 35g plasticizer were put into a high-speed mixer and mixed and stirred at 70°C for 30 minutes. After cooling to room temperature, 20g ABS resin was added and blended at 90°C for 20 minutes. The mixture was transferred to a twin-screw extruder and extruded and granulated at 200°C. The mixture was then calendered at 150°C and 20m / min by a calendering wheel, cooled to 20°C, cut, and rolled to obtain a heat-resistant PVC inflatable film. The stabilizer was dibutyltin dilaurate, the plasticizer was dibutyl phthalate, the ABS resin was purchased from BASF of Germany, with a grade of 2802HD, and the PVC was purchased from LG Chemical of South Korea, LG PVC LK170, with a degree of polymerization of 1550.

[0032] The preparation method of the modified aluminum hydroxide is as follows: 5g corn fiber, 20g distilled water and 50g anhydrous ethanol are mixed and ultrasonicated for 30 minutes, 5g stearic acid is added and ultrasonicated for 30 minutes, the mixture is heated to 80°C and stirred in a constant temperature magnetic stirrer for 8 hours, and then transferred to a centrifuge, centrifuged at a speed of 10000r / min for 10 minutes, washed with anhydrous ethanol, and dried in an oven at 50°C for 24 hours; 5g starch, 10g glycerol and 10g aluminum hydroxide are added, heated to 90°C, mixed and stirred for 30 minutes, filtered and dried for 24 hours to obtain the modified aluminum hydroxide.

[0033] Example 4 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 3 in that: the preparation method of modified aluminum hydroxide is as follows: 5g corn fiber, 20g distilled water and 50g anhydrous ethanol are mixed and ultrasonicated for 30 minutes, and then 5g stearic acid is added and ultrasonicated for 30 minutes. After heating to 80°C, the mixture is stirred in a constant temperature magnetic stirrer for 8 hours and then transferred to a centrifuge, centrifuged at a speed of 10000r / min for 10 minutes, washed with anhydrous ethanol, and dried in an oven at a temperature of 50°C for 24 hours; then 5g starch, 10g glycerol and 10g aluminum hydroxide are added, heated to 90°C, mixed and stirred for 30 minutes, filtered and dried for 24 hours to obtain modified aluminum hydroxide.

[0034] Example 5 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 3 in that: the input amount of corn fiber is 10g, the input amount of starch is 6g, and the input amount of aluminum hydroxide is 14g.

[0035] Example 6 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 3 in that: the input amount of corn fiber is 10g, the input amount of starch is 7g, and the input amount of aluminum hydroxide is 18g.

[0036] Example 7 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 6 in that: an equal amount of ABS resin is replaced with a modified ABS resin, wherein the preparation method of the modified ABS resin is: 3g of dicyandiamide curing agent and 2g of accelerator are fully stirred with 70g of ABS resin for 30 minutes, then 20g of epoxy resin and 10g of water are added and stirred evenly for 10 minutes, and then transferred to an oven for drying for 10 hours to obtain the modified ABS resin. The epoxy resin is purchased from Zhenzhengfeng, with a brand name of MF-3301, the dicyandiamide curing agent is purchased from Aziken Chemical, with a brand name of DYHARD-100S, and the accelerator is purchased from Ningxia Jiafeng, with a brand name of 500SF.

[0037] Example 8 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 6 in that: an equal amount of ABS resin is replaced with a modified ABS resin, wherein the preparation method of the modified ABS resin is: 5g of dicyandiamide curing agent and 4g of accelerator are fully stirred with 80g of ABS resin for 30 minutes, then 30g of epoxy resin and 20g of water are added and stirred evenly for 10 minutes, and then transferred to an oven for drying for 10 hours to obtain the modified ABS resin. The epoxy resin is purchased from Zhenzhengfeng, with a brand name of MF-3301, the dicyandiamide curing agent is purchased from Aziken Chemical, with a brand name of DYHARD-100S, and the accelerator is purchased from Ningxia Jiafeng, with a brand name of 500SF.

[0038] Example 9 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 8 in that: the input amount of ABS resin is 72g, the input amount of epoxy resin is 24g, and the input amount of dicyandiamide curing agent is 5g.

[0039] Example 10 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 8 in that: the input amount of ABS resin is 74g, the input amount of epoxy resin is 27g, and the input amount of dicyandiamide curing agent is 5g.

[0040] Embodiment 11 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 11 in that the input amount of PVC is 100 g, the input amount of modified aluminum hydroxide is 16 g, and the input amount of modified ABS resin is 23 g.

[0041] Example 12 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 11 in that the input amount of PVC is 100 g, the input amount of modified aluminum hydroxide is 18 g, and the input amount of modified ABS resin is 25 g.

[0042] Comparative Example Comparative Example 1 A method for preparing a heat-resistant PVC inflatable membrane, which is different from Example 3 in that an equal amount of modified aluminum hydroxide is replaced by aluminum hydroxide.

[0043] Comparative Example 2 A method for preparing a heat-resistant PVC inflatable membrane, which is different from Example 3 in that an equal amount of modified aluminum hydroxide is replaced by talcum powder.

[0044] Comparative Example 3 A method for preparing a heat-resistant PVC inflatable membrane is different from that of Example 3 in that an equal amount of ABS resin is replaced with epoxy resin, and the epoxy resin is purchased from Zhenzhengfeng with a brand number of MF-3301.

[0045] Comparative Example 4 A method for preparing a heat-resistant PVC inflatable film, which is different from Example 3 in that an equal amount of ABS resin is replaced by PVC.

[0046] Performance testing: Heat resistance: According to the Congo red method described in GB / T 2917.1-2002, the thermal stability of the PVC inflatable films prepared in Examples 1-12 and Comparative Examples 1-4 was tested at a test temperature of 180°C, and the time required for the test paper to change from red to blue was measured.

[0047] Tensile strength performance test: The mechanical properties of the PVC inflatable membranes prepared in Examples 1-12 and Comparative Examples 1-4 were tested according to GB / T 1040.3-2006.

[0048] Antibacterial properties: According to GB15979-2002, Staphylococcus aureus was used to test the PVC inflatable membranes prepared in Examples 1-12 and Comparative Examples 1-4.

[0049] According to the data comparison of Examples 1-3 and Comparative Examples 1-4, PVC as the main raw material, modified aluminum hydroxide and ABS resin as fillers have higher thermal stability, and the memory groups in the ABS resin interact with PVC and modified aluminum hydroxide to form a more stable network structure, thereby improving the heat resistance of the PVC inflatable film.

[0050] According to the data comparison of Examples 3-5, it can be obtained that when corn fiber, starch and aluminum hydroxide are in a specific weight ratio, the three work together, and starch enhances the bonding between corn fiber and aluminum hydroxide, further improving the heat resistance of aluminum hydroxide, so that the modified aluminum hydroxide can further improve the heat resistance of the PVC inflatable film, while highlighting the biological activity of corn fiber and improving the antibacterial properties of the PVC inflatable film.

[0051] According to the data comparison of Examples 5-8, it can be obtained that the ABS resin forms a structure with high heat resistance through the curing reaction of the dicyandiamide curing agent and the accelerator, thereby improving the heat resistance of the PVC inflatable film; at the same time, the combination of ABS resin and epoxy resin can increase the mechanical strength of the PVC inflatable film, thereby improving the impact resistance of the PVC inflatable film.

[0052] According to the data comparison of Examples 8-10, when the ABS resin, epoxy resin and dicyandiamide curing agent are in a specific weight ratio, the heat deformation temperature and heat resistance of the PVC film can be improved after the reaction of the dicyandiamide curing agent and the epoxy resin. At the same time, the epoxy resin acts as an adhesive to improve the bonding strength between the PVC film and the ABS resin, thereby improving the impact resistance and corrosion resistance of the PVC inflatable film.

[0053] According to the data comparison of Examples 10-12, when PVC, modified aluminum hydroxide and modified ABS resin are in a specific weight ratio, adding modified ABS resin and modified aluminum hydroxide can improve the processing fluidity of PVC, help to improve the mechanical strength and heat resistance of PVC, and the three work together to effectively improve the antibacterial properties of PVC inflatable membrane.

[0054] This specific implementation manner is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the specific implementation manner as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A heat-resistant PVC inflatable membrane, characterized in that: The invention comprises the following raw materials in parts by weight: 80-120 parts of PVC; 10-20 parts of modified aluminum hydroxide; 10-30 parts of ABS resin; 2-6 parts of stabilizer; and 30-40 parts of plasticizer. The aluminum hydroxide is made of the following raw materials: corn fiber, distilled water, anhydrous ethanol, stearic acid, starch, glycerin and aluminum hydroxide.

2. A heat-resistant PVC inflatable membrane according to claim 1, characterized in that: The preparation method of the modified aluminum hydroxide is as follows: 5-15 parts by weight of corn fiber, 20-40 parts by weight of distilled water and 50-100 parts by weight of anhydrous ethanol are mixed and ultrasonicated, and then 5-10 parts by weight of stearic acid are added and ultrasonicated continuously, and then the mixture is heated and stirred, centrifuged, washed and dried; then 5-10 parts by weight of starch, 10-30 parts by weight of glycerol and 10-20 parts by weight of aluminum hydroxide are added, heated, mixed and stirred, and filtered and dried to obtain the modified aluminum hydroxide.

3. A heat-resistant PVC inflatable membrane according to claim 2, characterized in that: The weight ratio of the corn fiber, starch and aluminum hydroxide is 1: (0.6-0.7): (1.4-1.8).

4. The heat-resistant PVC inflatable membrane according to claim 1, characterized in that: The ABS resin is a modified ABS resin. The preparation method of the modified ABS resin is as follows: 3-5 parts by weight of a dicyandiamide curing agent and 2-4 parts by weight of an accelerator are fully stirred with 70-80 parts by weight of the ABS resin, and then 20-30 parts by weight of an epoxy resin and 10-20 parts by weight of water are added and stirred evenly, and the modified ABS resin is obtained by drying.

5. A heat-resistant PVC inflatable membrane according to claim 4, characterized in that: The weight ratio of the ABS resin, epoxy resin and dicyandiamide curing agent is (14.4-14.8): (4.8-5.4):

1.

6. A heat-resistant PVC inflatable membrane according to claim 4, characterized in that: The weight ratio of the PVC, modified aluminum hydroxide and modified ABS resin is 1: (0.16-0.18): (0.23-0.25).

7. The heat-resistant PVC inflatable membrane according to claim 1, characterized in that: The polymerization degree of the PVC is 1300-2000.

8. The heat-resistant PVC inflatable membrane according to claim 1, characterized in that: The plasticizer is dibutyl phthalate.

9. The heat-resistant PVC inflatable membrane according to claim 1, characterized in that: The stabilizer is dibutyltin dilaurate.

10. A method for preparing a heat-resistant PVC inflatable film, characterized in that: Used for preparing the heat-resistant PVC inflatable film according to any one of claims 1 to 9, The method comprises the following steps: mixing and stirring PVC, modified aluminum hydroxide, a stabilizer and a plasticizer, adding ABS resin for blending after cooling, and calendering to obtain the heat-resistant PVC inflatable film.

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