A temperature-resistant deformable floor film and its preparation method

Abstract

The present application relates to the field of floor membranes, and specifically discloses a temperature-resistant deformable floor membrane and its preparation method. A temperature-resistant deformable floor membrane comprises the following components in parts by weight: 90-120 parts of PVC powder; 25-40 parts of plasticizer; 2-4 parts of stabilizer; 3-4 parts of flame retardant; 1.5-3.5 parts of mildew inhibitor; 3-5 parts of epoxy soybean oil; 2-6 parts of phosphite; and 3-5 parts of white carbon black. The preparation method comprises the following steps: mixing the above raw materials, extruding and granulating them, and then rolling them into a film to obtain a semi-finished floor membrane; then cooling the semi-finished floor membrane and preheating it during the winding process to obtain a temperature-resistant deformable floor membrane. The floor membrane of the present application has a stable organizational structure in a frequently temperature-changing environment, greatly reduces its own aging rate, and greatly improves its overall service life.

Description

Technical Field

[0001] The present application relates to the field of floor membranes, and more specifically, to a temperature-resistant deformable floor membrane and a preparation method thereof. Background Art

[0002] Floor film is a kind of packaging material that is widely used in home decoration and building materials. It has the characteristics of anti-collision, high elasticity and corrosion resistance. When laid on the indoor floor, it can effectively avoid damage caused by friction and bumps, and also play a role in blocking moisture and protecting the floor.

[0003] Chinese invention patent application publication number CN111925605A discloses a PVC hard floor membrane and its processing technology. The VC hard floor membrane is made from the following raw materials, by weight: 90-100 parts high-K value PVC powder, 15-20 parts nanofiller, 10-15 parts flame retardant, 6-8 parts MBS resin, 10-15 parts plasticizer, 3-5 parts heat stabilizer, and 0.9-1.2 parts lubricant. By using modified flame retardants and nanofillers, the above application significantly enhances the tensile and tear strength of the hard floor membrane, while also providing enhanced wear resistance.

[0004] Regarding the above-mentioned related technologies, the inventors believe that when floor membranes are laid and used, on the one hand, due to regional reasons, the temperature difference between day and night in plateau areas is large, and on the other hand, due to the popularity of air conditioning and floor heating, the environment in which the floor membrane is located will also experience large temperature changes. Frequent temperature changes will cause the organizational structure of the floor membrane to age, and various performance aspects will decline to varying degrees, and the service life will be greatly reduced. Therefore, it is urgent to propose a solution to solve the above-mentioned technical problems. Summary of the Invention

[0005] In order to improve the anti-aging performance of the floor film in an environment with frequent temperature changes, the present application provides a temperature-resistant floor film and a preparation method thereof.

[0006] In a first aspect, the present application provides a temperature-resistant deformable floor membrane, which adopts the following technical solution:

[0007] A temperature-resistant deformable floor film comprises the following components in parts by weight:

[0008] 90-120 parts of PVC powder;

[0009] 25-40 parts of plasticizer;

[0010] 2-4 parts of stabilizer;

[0011] 3-4 parts of flame retardant;

[0012] 1.5-3.5 parts of mildew inhibitor;

[0013] 3-5 parts of epoxidized soybean oil;

[0014] 2-6 parts of phosphite;

[0015] 3-5 parts of white carbon black.

[0016] By adopting the above technical solution, epoxy soybean oil stabilizes the active chlorine atoms on the PVC chain, thereby hindering the continuous decomposition of PVC and ensuring the stability of the floor film's structure in environments with frequent temperature fluctuations. Phosphite captures the hydrogen chloride released during PVC degradation, inhibiting its autocatalytic effect, thereby slowing the aging of the floor film. Silica gel significantly improves the heat resistance of PVC and has excellent chemical stability, making it a good filler and reinforcement. Furthermore, through the synergistic combination of epoxy soybean oil, phosphite, and silica gel, the present application enables the temperature-resistant, deformable floor film to adapt well to frequent temperature fluctuations, significantly reducing its aging rate. This is presumably due to the retardation of the energy required for the molecular chain breakage of the PVC molecules and the significant inhibition of their own molecular motion, thereby significantly extending the service life of the temperature-resistant, deformable floor film.

[0017] Preferably, the components of the temperature-resistant deformable floor film further include 9-20 parts by weight of a functional additive, which is composed of polytetrafluoroethylene and silicone oil, and the weight ratio of polytetrafluoroethylene to silicone oil is 1:(2.4-4.2).

[0018] By adopting the above technical solution, polytetrafluoroethylene has excellent high and low temperature resistance and chemical stability, and obvious weather resistance, which can greatly improve the stability of the floor membrane in a frequently changing temperature environment; silicone oil has the characteristics of low surface energy, which can effectively remove the fine bubbles generated during the melting process of the raw materials of each component, thereby improving the plasticizing effect of the floor membrane and making its organizational structure more compact and stable; and when polytetrafluoroethylene and silicone oil are used as functional additives in a specific proportion, they can play an excellent compounding and synergistic role with each other, which can greatly improve the strength of the ionic bond, making the temperature-resistant floor membrane more difficult to decompose in a frequently changing temperature environment, greatly improving the overall aging resistance, and further increasing the service life.

[0019] Preferably, the weight ratio of polytetrafluoroethylene to silicone oil is 1:3.

[0020] By adopting the above technical solution, the polytetrafluoroethylene and silicone oil in the above proportion, when used to form a functional additive, have the best mutual cooperation effect, and the overall efficacy is most stable, so that the organizational structure of the obtained temperature-resistant floor membrane is further improved, and the anti-aging performance in a frequent temperature change environment is the best.

[0021] Preferably, 1-3 parts by weight of a polyimide-siloxane copolymer is further added to the components of the temperature-resistant deformable floor film.

[0022] By adopting this technical solution, the polyimide-siloxane copolymer, when mixed with other raw materials and melted and solidified during application, automatically migrates to the surface of the mixture, forming an enriched layer on the surface of the heat-resistant, deformable floor membrane, effectively addressing the adverse effects of frequent temperature fluctuations. Furthermore, the polyimide-siloxane copolymer, epoxy soybean oil, and phosphite exhibit excellent synergistic effects. Through intermolecular bonding and synergy, the epoxy soybean oil and phosphite are better applied to the surface of the heat-resistant, deformable floor membrane, forming a more stable surface protection layer that effectively resists aging and significantly increases its service life.

[0023] Preferably, the weight ratio of the epoxy soybean oil, phosphite and polyimide siloxane copolymer is 4:3:2.

[0024] By adopting the above technical solution, the epoxy soybean oil, phosphite and polyimide siloxane copolymer in the above weight ratio have relatively stable interactions during actual application, and the polyimide siloxane copolymer is well matched with the epoxy soybean oil and phosphite, so that the obtained temperature-resistant floor film has the best anti-aging performance in a frequently temperature-changing environment.

[0025] Preferably, the plasticizer is one or a combination of dioctyl phthalate, dioctyl adipate, tricresyl phosphate and chlorinated paraffin.

[0026] By adopting the above technical solution, the above-mentioned types of plasticizers have good compatibility and bonding with other component raw materials, which can improve the flexibility of PVC and is conducive to improving the molding effect of the subsequent processing of the component raw materials, thereby obtaining a temperature-resistant deformable floor film with excellent quality and stable performance.

[0027] Preferably, the stabilizer is one or a combination of zinc stearate, calcium stearate, dibutyltin dilaurate and dibasic lead stearate.

[0028] By adopting the above technical solution, the addition of the above stabilizer can inhibit degradation or reaction with released hydrogen chloride and prevent discoloration of polyvinyl chloride during processing, thereby improving its stability during processing and use.

[0029] Preferably, the flame retardant is one or a combination of antimony trioxide, magnesium hydroxide, zinc borate and triethyl phosphate.

[0030] By adopting the above technical solution, the use of the above flame retardant in the temperature-resistant deformable floor film can inhibit the generation of flammable gas, thereby achieving a good flame retardant effect, making the temperature-resistant deformable floor film safer to use.

[0031] Preferably, the mildew inhibitor is one or a combination of pentachlorophenol, sodium pentachlorophenol and salicylanilide.

[0032] By adopting the above technical solution, the above type of mildew inhibitor has a rapid action and strong mildew resistance, and can effectively and quickly prevent the growth of mildew on the temperature-resistant deformable floor membrane, so that the temperature-resistant deformable floor membrane maintains good stability during the application process.

[0033] In a second aspect, the present application provides a method for preparing a temperature-resistant deformable floor film, which adopts the following technical solution: A method for preparing a temperature-resistant deformable floor film, comprising the following steps:

[0034] (1) preparing raw materials including PVC powder, plasticizer, stabilizer, flame retardant, mildew inhibitor, epoxy soybean oil, phosphite and white carbon black according to the proportion;

[0035] (2) mixing the raw materials in step (1), extruding and granulating them, and then rolling them into a film to obtain a semi-finished floor film;

[0036] (3) After the semi-finished floor film in step (2) is cooled, it is preheated during the winding process to obtain a temperature-resistant deformable floor film.

[0037] By adopting the above technical solution, the preparation steps of the heat-resistant, deformable floor membrane of the present application are relatively few, the process is simple, and it is easy to mass-produce. Furthermore, by cooling the semi-finished floor membrane and then preheating it, it can achieve a good and stable molding effect, ensuring the bonding effect between the various component raw materials, thereby obtaining a heat-resistant, deformable floor membrane of excellent quality and stability.

[0038] In summary, this application has the following beneficial effects:

[0039] 1. Due to the synergistic combination of epoxy soybean oil, phosphite and white carbon black used in this application, the resulting temperature-resistant floor membrane is less likely to undergo significant structural changes in a frequently changing temperature environment. Furthermore, its autocatalytic effect can be suppressed, significantly reducing its aging rate and significantly extending its overall service life.

[0040] 2. Since the present application uses a functional additive composed of polytetrafluoroethylene and silicone oil in a specific ratio, it can greatly improve the stability of the floor membrane in an environment with frequent temperature changes, making the temperature-resistant floor membrane less likely to decompose in an environment with frequent temperature changes, greatly improving the overall aging resistance and further extending the service life;

[0041] 3. This application uses polyimide siloxane copolymer, which can be well matched with epoxy soybean oil and phosphite to form a more stable surface protection on the temperature-resistant deformable floor membrane, thereby being able to cope with its own aging well and greatly improving its service life. DETAILED DESCRIPTION

[0042] The present application is further described in detail below with reference to examples.

[0043] The raw materials used in the examples of this application are commercially available unless otherwise specified: PVC powder was purchased from Tianjin Dagu Chemical DG-800 powder;

[0044] Epoxidized soybean oil was purchased from HALLSTAR PLASTHALL ESO;

[0045] Phosphite was purchased from Shandong Liang New Material Technology Co., Ltd., model LA-5S;

[0046] White carbon black was purchased from WACKER H15;

[0047] Polytetrafluoroethylene was purchased from Daikin AC-5820;

[0048] Silicone oil was purchased from Dow Corning PMX-200;

[0049] Polyimide-siloxane copolymer was provided by Shanghai Institute of Chemical Reagents.

[0050] Example

[0051] Example 1

[0052] A temperature-resistant deformable floor film, the components and their corresponding weights of which are shown in Table 1, is prepared by the following steps:

[0053] (1) preparing raw materials including PVC powder, plasticizer, stabilizer, flame retardant, mildew inhibitor, epoxy soybean oil, phosphite and white carbon black according to the proportion;

[0054] (2) mixing the raw materials in step (1), extruding and granulating at 170° C., and then rolling the mixture into a film using a calender to obtain a semi-finished floor film;

[0055] (3) The semi-finished floor film in step (2) is cooled, i.e., treated at 25°C for 10 hours, and then preheated during the winding process at a preheating temperature of 40°C and a preheating time of 2 seconds to obtain a temperature-resistant deformable floor film.

[0056] Note: The plasticizer mentioned above is dioctyl phthalate; the stabilizer is zinc stearate; the flame retardant is antimony trioxide; and the mildew inhibitor is pentachlorophenol.

[0057] Example 2-3

[0058] A temperature-resistant deformable floor film is different from Example 1 in that the components and their corresponding weights are shown in Table 1.

[0059] Table 1 Components and their weight parts in Examples 1-3 (kg / part)

[0060] Components Example 1 Example 2 Example 3 PVC powder 105 90 120 plasticizers 32.5 25 40 stabilizer 3 2 4 flame retardants 3.5 3 4 mildew inhibitors 2.5 1.5 3.5 Epoxidized soybean oil 4 3 5 Phosphites 4 2 6 Silica 4 3 5

[0061] Example 4

[0062] A temperature-resistant deformable floor film is different from Example 1 in that the plasticizer is a composition of dioctyl adipate and tricresyl phosphate in a weight ratio of 1:1.

[0063] Example 5

[0064] A temperature-resistant deformable floor film is different from Example 1 in that the stabilizer is a composition of dibutyltin dilaurate and dibasic lead stearate in a weight ratio of 1:1.

[0065] Example 6

[0066] A temperature-resistant deformable floor film is different from Example 1 in that the flame retardant is a composition of zinc borate and triethyl phosphate in a weight ratio of 1:1.

[0067] Example 7

[0068] A temperature-resistant deformable floor film is different from Example 1 in that the mildew inhibitor is a composition of sodium pentachlorophenol and salicylanilide in a weight ratio of 1:1.

[0069] Example 8

[0070] A temperature-resistant deformable floor film, which differs from Example 1 in that 14.5 parts by weight of a functional additive are further added to the components of the temperature-resistant deformable floor film, and the functional additive is composed of polytetrafluoroethylene and silicone oil, and the weight ratio of polytetrafluoroethylene to silicone oil is 1:3.

[0071] Example 9

[0072] A temperature-resistant deformable floor membrane, which is different from Example 8 in that the weight ratio of polytetrafluoroethylene to silicone oil is 1:2.4.

[0073] Example 10

[0074] A temperature-resistant deformable floor membrane, which is different from Example 8 in that the weight ratio of polytetrafluoroethylene to silicone oil is 1:4.2.

[0075] Example 11

[0076] A temperature-resistant deformable floor membrane, which is different from Example 8 in that the weight ratio of polytetrafluoroethylene to silicone oil is 1:3.3.

[0077] Example 12

[0078] A temperature-resistant deformable floor film is different from Example 8 in that the added weight portion of the functional additive is 9 parts.

[0079] Example 13

[0080] A temperature-resistant deformable floor film is different from Example 8 in that the added weight portion of the functional additive is 20 parts.

[0081] Example 14

[0082] A temperature-resistant deformable floor film is different from Example 1 in that 2 parts by weight of a polyimide-siloxane copolymer is further added to the components of the temperature-resistant deformable floor film.

[0083] Example 15

[0084] A temperature-resistant deformable floor film, which is different from Example 14 in that the added weight portion of the polyimide siloxane copolymer is 1 part.

[0085] Example 16

[0086] A temperature-resistant deformable floor film, which is different from Example 14 in that the added weight portion of the polyimide siloxane copolymer is 3 parts.

[0087] Example 17

[0088] A temperature-resistant deformable floor film, which is different from Example 14 in that the weight ratio of epoxy soybean oil, phosphite and polyimide siloxane copolymer is 4:3:2; wherein the weight ratio of polyimide siloxane copolymer is 2 parts.

[0089] Example 18

[0090] A temperature-resistant deformable floor film, which differs from Example 8 in that the functional additive is polytetrafluoroethylene.

[0091] Example 19

[0092] A temperature-resistant deformable floor film, which is different from Example 8 in that the functional additive is silicone oil.

[0093] Comparative Example

[0094] Comparative Example 1

[0095] A temperature-resistant deformable floor film is different from Example 1 in that epoxy soybean oil, phosphite and other materials are replaced by white carbon black.

[0096] Comparative Example 2

[0097] A temperature-resistant deformable floor film is different from Example 1 in that phosphite, white carbon black and other materials are replaced by epoxidized soybean oil.

[0098] Comparative Example 3

[0099] A temperature-resistant deformable floor film is different from Example 1 in that epoxy soybean oil, white carbon black and other materials are replaced by phosphite.

[0100] Comparative Example 4

[0101] A temperature-resistant deformable floor film is different from Example 1 in that the epoxy soybean oil is replaced by phosphite and white carbon black in a corresponding mass ratio.

[0102] Comparative Example 5

[0103] A temperature-resistant deformable floor film, which is different from Example 1 in that the phosphite and other qualities are replaced by epoxy soybean oil and white carbon black

[0104] Comparative Example 6

[0105] A temperature-resistant deformable floor film is different from Example 1 in that the amount of white carbon black is replaced by epoxy soybean oil and phosphite.

[0106] Comparative Example 7

[0107] A temperature-resistant and variable floor film is different from Example 1 in that the temperature-resistant and variable floor film does not contain epoxy soybean oil, phosphite and white carbon black.

[0108] Comparative Example 8

[0109] A temperature-resistant and variable floor film, which is different from Example 14 in that the components of the temperature-resistant and variable floor film do not contain epoxy soybean oil and phosphite.

[0110] Performance Testing Test Samples: The temperature-resistant deformable floor films obtained in Examples 1-19 were used as test samples 1-19, and the temperature-resistant deformable floor films obtained in Comparative Examples 1-8 were used as control samples 1-8.

[0111] Test Method: Initial tensile strength and tear strength of test samples 1-19 and control samples 1-8 were measured according to GB / T 13022-1991, "Test Method for Tensile Properties of Plastic Films," and GB / T 16578-1996, "Test Method for Tear Resistance of Plastic Films and Sheets—Trouser Tear Method." Wear tests were conducted using a UMT-2 micro-wear instrument with a load of 300 mN and a wear time of 30 min. Gr15 steel balls were used as the friction pair, and initial wear was measured using a Phase Shift Micro XAM-3D white light interferometry profilometer. Test samples 1-19 and control samples 1-8 were then placed in the same enclosed chamber, shielded from light and maintained at 40% humidity. The temperature was then increased at a rate of 2°C / min to 50°C, held at that temperature for 12 h, and then decreased at a rate of 1°C / min to 5°C, held at that temperature for 8 h. This cycle was counted as one cycle. After 30 cycles, the samples were removed and tested for post-test tensile strength, tear strength, and wear as described above. Then, the tensile strength reduction rate, tear strength reduction rate and wear increase rate of the test samples 1-19 and the control samples 1-8 were calculated and recorded in Table 2 accordingly.

[0112] Table 2 Test results of test samples 1-19 and control samples 1-8

[0113]

[0114]

[0115] Combining Examples 1-3 and Comparative Examples 1-7 with Table 2, it can be seen that the synergistic combination of epoxy soybean oil, phosphite, and silica enables the temperature-resistant floor film to maintain relatively stable tensile strength, tear strength, and abrasion resistance in environments with frequent temperature fluctuations. Test results demonstrate low rates of tensile strength reduction, tear strength reduction, and wear rate increase. While the use of any one or two of these can improve the aging resistance of epoxy soybean oil, phosphite, and silica to some extent in environments with frequent temperature fluctuations, the improvement is limited and far inferior to the superior improvement achieved by the combination of all three.

[0116] Combining Examples 1 and 8-13 with Table 2, it can be seen that the addition of a functional additive composed of polytetrafluoroethylene and silicone oil in specific ratios can further reduce the rate of decrease in tensile strength, the rate of decrease in tear strength, and the rate of increase in wear loss, demonstrating that it can significantly improve the anti-aging performance of temperature-resistant, flexible floor membranes in environments with frequent temperature fluctuations. The most effective effect is achieved when the weight ratio of polytetrafluoroethylene to silicone oil is 1:3. Furthermore, in conjunction with Examples 18-19, it can be seen that while using either polytetrafluoroethylene or silicone oil alone as a functional additive can improve the anti-aging performance of temperature-resistant, flexible floor membranes and reduce the rate of decrease in tensile strength, the rate of decrease in tear strength, and the rate of increase in wear loss to a certain extent, the reduction is far less than that achieved by combining the two. This demonstrates that the synergistic combination of polytetrafluoroethylene and silicone oil can provide significant performance improvements.

[0117] Combining Example 1 with Examples 14-17 and Table 2, it can be seen that the addition of polyimide-siloxane copolymer can improve the anti-aging performance of temperature-resistant, variable-temperature floor membranes in environments with frequent temperature fluctuations, and the most effective effect is achieved when the weight ratio of epoxy soybean oil, phosphite, and polyimide-siloxane copolymer is 4:3:2. Furthermore, in conjunction with Comparative Examples 1 and 8, it can be seen that the use of epoxy soybean oil, phosphite, or polyimide-siloxane copolymer alone has limited anti-aging effects on temperature-resistant, variable-temperature floor membranes. The combined effect is far less than that achieved by combining epoxy soybean oil, phosphite, and polyimide-siloxane copolymer. This demonstrates that polyimide-siloxane copolymers work well with epoxy soybean oil and phosphite, significantly improving the anti-aging performance of temperature-resistant, variable-temperature floor membranes in environments with frequent temperature fluctuations.

[0118] This specific embodiment 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 present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A temperature-resistant deformable floor membrane, characterized in that: Contains the following components in parts by weight: 90-120 parts of PVC powder; 25-40 parts of plasticizer; 2-4 parts of stabilizer; 3-4 parts of flame retardant; 1.5-3.5 parts of mildew inhibitor; 3-5 parts of epoxidized soybean oil; 2-6 parts of phosphite; 3-5 parts of white carbon black; 9-20 parts of functional additives; The functional additive consists of polytetrafluoroethylene and silicone oil, and the weight ratio of polytetrafluoroethylene to silicone oil is 1: (2.4-4.2).

2. The temperature-resistant deformable floor membrane according to claim 1, characterized in that: The weight ratio of the polytetrafluoroethylene to the silicone oil is 1:

3.

3. The temperature-resistant deformable floor membrane according to claim 1, characterized in that: The components of the temperature-resistant deformable floor film also contain 1-3 parts by weight of a polyimide-siloxane copolymer.

4. The temperature-resistant deformable floor membrane according to claim 3, characterized in that: The weight ratio of the epoxy soybean oil, phosphite and polyimide siloxane copolymer is 4:3:

2.

5. The temperature-resistant deformable floor membrane according to claim 1, characterized in that: The plasticizer is one or a combination of dioctyl phthalate, dioctyl adipate, tricresyl phosphate and chlorinated paraffin.

6. The temperature-resistant deformable floor membrane according to claim 1, characterized in that: The stabilizer is one or a combination of zinc stearate, calcium stearate, dibutyltin dilaurate and dibasic lead stearate.

7. The temperature-resistant deformable floor membrane according to claim 1, characterized in that: The flame retardant is one or a combination of antimony trioxide, magnesium hydroxide, zinc borate and triethyl phosphate.

8. The temperature-resistant deformable floor membrane according to claim 1, characterized in that: The mildew preventer is one or a combination of pentachlorophenol, sodium pentachlorophenol and salicylanilide.

9. The method for preparing the temperature-resistant deformable floor film according to claim 1, characterized in that: The following steps are involved: (1) Prepare raw materials including PVC powder, plasticizer, stabilizer, flame retardant, mildew inhibitor, epoxy soybean oil, phosphite and white carbon black according to the proportion, and the raw materials also include functional additives; (2) mixing the raw materials in step (1), extruding and granulating them, and then rolling them into a film to obtain a semi-finished floor film; (3) After the semi-finished floor film in step (2) is cooled, it is preheated during the winding process to obtain a temperature-resistant deformable floor film.

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