Plastic film with extinction effect and preparation method thereof

Abstract

The invention relates to the technical field of plastic films, and particularly discloses a plastic film with a matting effect and a preparation method of the plastic film. The plastic film with the matting effect is prepared from the following components in parts by mass: 100 parts of polypropylene resin; 3-5 parts of color master batch; 1-3 parts of an anti-blocking agent; 0.05 to 0.15 part of a gloss conditioning agent; 15-17 parts of a matting agent; the delustering agent is obtained by modifying magnesium metaborate whiskers with a modification liquid; the modified liquid is a compound of a solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2, 2 '-biphenyl dicarboxylic acid and pentamethyldiethylenetriamine. According to the present invention, the plastic film has advantages of good matting performance and high strength.

Description

Technical Field

[0001] The invention relates to the field of plastic films, in particular to a plastic film with a matte effect and a preparation method thereof. Background Art

[0002] Most of the plastic films widely used in the market today have a high-gloss surface. Although this can meet aesthetic requirements in some applications, in many cases, consumers and manufacturers prefer to use low-gloss plastic films with a matte effect to meet different visual aesthetic requirements or reduce reflective interference.

[0003] In order to achieve the matte effect of plastic film, there are two common practices in the industry: one is to add a certain amount of silica or other particulate matter as a filler, which is evenly dispersed in the resin matrix during the mixing process, so that light is scattered when it enters, thereby reducing the gloss; the other is to use mechanical embossing to form a microscopic uneven texture structure on the surface of the film, which can also achieve the effect of light scattering. Although the mechanical embossing method is simple and easy, it is difficult to accurately control the degree of matte, and the surface is easily worn and loses its effect after long-term use. Therefore, the method of adding fillers is mainly adopted. Although adding fillers can obtain better matte performance, the addition of fillers can easily lead to a decrease in the strength of the film material, making it difficult for the physical properties of the film to meet the requirements. Therefore, there is still room for improvement. Summary of the invention

[0004] In order to make the plastic film have better matting performance and higher strength at the same time, the present application provides a plastic film with matting effect and a preparation method thereof.

[0005] In a first aspect, the present application provides a plastic film with a matte effect, which adopts the following technical solution: A plastic film with a matte effect is prepared from the following components in parts by mass: 100 parts of polypropylene resin; 3-5 parts of masterbatch; 1-3 parts of opening agent; Gloss regulator 0.05-0.15 parts; Matting agent 15-17 parts; The matting agent is obtained by modifying magnesium metaborate whiskers with a modifying liquid; The modified liquid is a compound of solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid and pentamethyldiethylenetriamine.

[0006] By adopting the above technical scheme, the magnesium borate whiskers are modified by using a modified liquid prepared by mixing tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid and pentamethyldiethylenetriamine, so that the matting agent filled into the polypropylene resin can have a good matting effect and can effectively reduce the strength loss of the plastic film, so that the plastic film has both good matting performance and high strength.

[0007] Preferably, in the modified liquid, the mass ratio of the solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid, and pentamethyldiethylenetriamine is 100:35-37:15-17:7-9:3-5.

[0008] By adopting the above technical scheme and specifically selecting the mass ratio of tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid and pentamethyldiethylenetriamine, the modification effect of the modification liquid on magnesium metaborate whiskers is better, and after the matting agent is added to the plastic film, the strength of the plastic film can be better improved, so that the physical properties of the plastic film are better.

[0009] Preferably, the solvent is ethanol.

[0010] By adopting the above technical scheme and specifically selecting ethanol as the solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid and pentamethyldiethylenetriamine can be evenly dispersed in the solvent to better exert their synergistic effect, thereby achieving a better modification effect on magnesium metaborate whiskers.

[0011] Preferably, the preparation method of the matting agent is as follows: Step 1), mixing a solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid, and pentamethyldiethylenetriamine to obtain a modified solution; Step 2), putting magnesium metaborate whiskers into a modification solution, keeping the temperature at 55-60° C., and soaking for modification for 3-4 hours; Step 3), filtering and drying to obtain a matting agent.

[0012] By adopting the above technical solution, magnesium borate whiskers are put into the modification liquid, kept at a constant temperature of 55-60°C, and immersed for modification for 3-4 hours, so that the modification effect is more sufficient and the matting agent has a better effect in improving the strength of the plastic film.

[0013] Preferably, in step 2), the mass ratio of magnesium metaborate whiskers to the modified liquid is 1:1-2.

[0014] By adopting the above technical solution and specifically selecting the mass ratio of magnesium metaborate whiskers and modifying liquid, the modification effect is better, while reducing material waste and having higher economic value.

[0015] Preferably, the gloss regulator is white mineral oil.

[0016] By adopting the above technical solution and specifically selecting white mineral oil, the film has a more beautiful appearance and better quality after matting.

[0017] In a second aspect, the present application provides a method for preparing a plastic film with a matte effect, using the following technical solution: A method for preparing the above-mentioned plastic film with matte effect comprises the following steps: Step 01), polypropylene resin, color masterbatch, anti-blocking agent, gloss regulator, and matting agent are uniformly mixed to obtain a mixture; Step 02), extruding and granulating the mixed material to obtain masterbatch; Step 03), the masterbatch is extruded and blow-molded to obtain a plastic film with a matte effect.

[0018] By adopting the above technical solution, the obtained plastic film has better matting effect, higher strength and better quality.

[0019] Preferably, in step 02), the extrusion temperature is 210-220°C, and in step 03), the extrusion temperature is 190-200°C.

[0020] By adopting the above technical solution and specifically selecting different extrusion temperatures, the matting agent can be dispersed more evenly in the polypropylene resin, the matting effect is better, and the strength of the plastic film can be better improved.

[0021] In summary, this application has the following beneficial effects: 1. Since the present application uses a modified liquid prepared by mixing tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid and pentamethyldiethylenetriamine to modify the magnesium metaborate whiskers, the matting agent filled into the polypropylene resin can achieve a good matting effect while effectively reducing the strength loss of the plastic film, so that the plastic film has both good matting performance and high strength.

[0022] 2. In the present application, it is preferred to specifically select the mass ratio of tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid, and pentamethyldiethylenetriamine so that the modification effect of the modification liquid on the magnesium metaborate whiskers is better, so that after the matting agent is added to the plastic film, the strength of the plastic film can be better improved, and the physical properties of the plastic film can be better.

[0023] 3. In the present application, it is preferred to put magnesium borate whiskers into the modification liquid, keep the temperature at 55-60°C, and soak for 3-4 hours to make the modification effect more sufficient and make the matting agent more effective in improving the strength of the plastic film. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with embodiments.

[0025] Example 1 A plastic film with matte effect, made from the following components: Polypropylene resin, masterbatch, anti-blocking agent, gloss regulator, matting agent.

[0026] The polypropylene resin was purchased from Sinopec, model K7726.

[0027] The masterbatch is PE masterbatch, purchased from Dongguan Zhengtao Plastic Co., Ltd., item number: HH9240IKNKJU.

[0028] The opening agent is erucamide, which is commercially available and has a CAS number of 112-84-5.

[0029] The gloss regulator is white mineral oil, purchased from Shandong Taichang Petrochemical Technology Co., Ltd., 5# white mineral oil.

[0030] The matting agent is homemade, obtained by modifying magnesium borate whiskers with a modifying liquid. The modified liquid is a compound of solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid, and pentamethyldiethylenetriamine. The solvent is ethanol, which is commercially available, with a CAS number of 64-17-5 and a content of 95%.

[0031] Tetrabutyl titanate, commercially available, CAS number: 5593-70-4, content: 99%.

[0032] Cyclohexyl methacrylate, commercially available, CAS No.: 101-43-9, content 99%.

[0033] 2,2'-Biphenyldicarboxylic acid, from commercial source, CAS number: 482-05-3, content 99%.

[0034] Pentamethyldiethylenetriamine, commercially available, CAS number: 3030-47-5, content 99%.

[0035] Magnesium metaborate whiskers were purchased from Hubei Kewode Chemical Co., Ltd.

[0036] The preparation method of the matting agent is as follows: Step 1), 100 kg ethanol, 35 kg tetrabutyl titanate, 15 kg cyclohexyl methacrylate, 7 kg 2,2'-biphenyldicarboxylic acid, 3 kg pentamethyldiethylenetriamine were added into a stirring kettle, the speed was 60 r / min, stirred for 10 min, and mixed evenly to obtain a modified liquid.

[0037] Step 2), put 20kg of magnesium metaborate whisker and 20kg of modified liquid into a stirring tank, rotate at 20r / min, stir continuously, keep constant temperature at 55°C, and soak for modification for 3h.

[0038] Step 3), filtering and collecting the filter residue, drying the filter residue at 90° C. to obtain a matting agent.

[0039] The method for preparing a plastic film with a matte effect is characterized by comprising the following steps: Step 01), put 100kg polypropylene resin, 3kg masterbatch, 1kg anti-blocking agent, 0.05kg gloss regulator, and 15kg matting agent into a stirring kettle, rotate at 240r / min, stir for 20min, mix evenly, and obtain a mixture.

[0040] Step 02), the mixed material is put into a twin-screw extruder for extrusion granulation, and the processing temperatures of the twin-screw extruder zones I-XI are controlled to be set to: 175°C, 175°C, 185°C, 195°C, 205°C, 205°C, 205°C, 210°C, 210°C, 210°C, and the screw speed is 40r / min to obtain masterbatch.

[0041] Step 03), the masterbatch is put into a twin-screw extruder and extruded into a tube embryo, and the processing temperature of the twin-screw extruder I-XI zone is controlled to be set to: 155°C, 155°C, 165°C, 175°C, 185°C, 185°C, 185°C, 190°C, 190°C, 190°C, screw speed 40r / min, and the extruded tube embryo is blown by a blow molding machine to obtain a plastic film with a thickness of 0.2mm and a matte effect.

[0042] Example 2 A plastic film with matte effect, made from the following components: Polypropylene resin, masterbatch, anti-blocking agent, gloss regulator, matting agent.

[0043] The polypropylene resin was purchased from Sinopec, model K7726.

[0044] The masterbatch is PE masterbatch, purchased from Dongguan Zhengtao Plastic Co., Ltd., item number: HH9240IKNKJU.

[0045] The opening agent is erucamide, which is commercially available and has a CAS number of 112-84-5.

[0046] The gloss regulator is white mineral oil, purchased from Shandong Taichang Petrochemical Technology Co., Ltd., 5# white mineral oil.

[0047] The matting agent is homemade, obtained by modifying magnesium borate whiskers with a modifying liquid. The modified liquid is a compound of solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid, and pentamethyldiethylenetriamine. The solvent is ethanol, which is commercially available, with a CAS number of 64-17-5 and a content of 95%.

[0048] Tetrabutyl titanate, commercially available, CAS number: 5593-70-4, content: 99%.

[0049] Cyclohexyl methacrylate, commercially available, CAS No.: 101-43-9, content 99%.

[0050] 2,2'-Biphenyldicarboxylic acid, from commercial source, CAS number: 482-05-3, content 99%.

[0051] Pentamethyldiethylenetriamine, commercially available, CAS number: 3030-47-5, content 99%.

[0052] Magnesium metaborate whiskers were purchased from Hubei Kewode Chemical Co., Ltd.

[0053] The preparation method of the matting agent is as follows: Step 1), 100 kg ethanol, 36 kg tetrabutyl titanate, 16 kg cyclohexyl methacrylate, 8 kg 2,2'-biphenyldicarboxylic acid, 4 kg pentamethyldiethylenetriamine were put into a stirring kettle, the speed was 60 r / min, stirred for 10 min, and mixed evenly to obtain a modified liquid.

[0054] Step 2), put 20kg magnesium metaborate whisker and 30kg modified liquid into a stirring kettle, rotate at 20r / min, stir continuously, keep constant temperature at 580°C, and soak for 3.5h.

[0055] Step 3), filtering and collecting the filter residue, drying the filter residue at 90° C. to obtain a matting agent.

[0056] The method for preparing a plastic film with a matte effect is characterized by comprising the following steps: Step 01), put 100kg polypropylene resin, 4kg masterbatch, 2kg anti-blocking agent, 0.1kg gloss regulator, and 16kg matting agent into a stirring kettle, rotate at 240r / min, stir for 20min, mix evenly, and obtain a mixture.

[0057] Step 02), the mixed material is put into a twin-screw extruder for extrusion granulation, and the processing temperatures of zones I-XI of the twin-screw extruder are controlled to be set to: 180°C, 180°C, 190°C, 200°C, 210°C, 210°C, 210°C, 210°C, 215°C, 215°C, 215°C, and the screw speed is 40r / min to obtain masterbatch.

[0058] Step 03), the masterbatch is put into a twin-screw extruder and extruded into a tube embryo, and the processing temperature of the twin-screw extruder I-XI zone is controlled to be set to: 160°C, 160°C, 170°C, 180°C, 190°C, 190°C, 190°C, 195°C, 195°C, 195°C, and the screw speed is 40r / min. The extruded tube embryo is blown by a blow molding machine to obtain a plastic film with a thickness of 0.2mm and a matte effect.

[0059] Example 3 A plastic film with matte effect, made from the following components: Polypropylene resin, masterbatch, anti-blocking agent, gloss regulator, matting agent.

[0060] The polypropylene resin was purchased from Sinopec, model K7726.

[0061] The masterbatch is PE masterbatch, purchased from Dongguan Zhengtao Plastic Co., Ltd., item number: HH9240IKNKJU.

[0062] The opening agent is erucamide, which is commercially available and has a CAS number of 112-84-5.

[0063] The gloss regulator is white mineral oil, purchased from Shandong Taichang Petrochemical Technology Co., Ltd., 5# white mineral oil.

[0064] The matting agent is homemade, obtained by modifying magnesium borate whiskers with a modifying liquid. The modified liquid is a compound of solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid, and pentamethyldiethylenetriamine. The solvent is ethanol, which is commercially available, with a CAS number of 64-17-5 and a content of 95%.

[0065] Tetrabutyl titanate, commercially available, CAS number: 5593-70-4, content: 99%.

[0066] Cyclohexyl methacrylate, commercially available, CAS No.: 101-43-9, content 99%.

[0067] 2,2'-Biphenyldicarboxylic acid, from commercial source, CAS number: 482-05-3, content 99%.

[0068] Pentamethyldiethylenetriamine, commercially available, CAS number: 3030-47-5, content 99%.

[0069] Magnesium metaborate whiskers were purchased from Hubei Kewode Chemical Co., Ltd.

[0070] The preparation method of the matting agent is as follows: Step 1), 100 kg ethanol, 37 kg tetrabutyl titanate, 17 kg cyclohexyl methacrylate, 9 kg 2,2'-biphenyldicarboxylic acid, 5 kg pentamethyldiethylenetriamine were put into a stirring kettle, the speed was 60 r / min, stirred for 10 min, and mixed evenly to obtain a modified liquid.

[0071] Step 2), put 20kg magnesium metaborate whisker and 40kg modified liquid into a stirring tank, rotate at 20r / min, stir continuously, keep constant temperature at 60°C, and soak for 4h.

[0072] Step 3), filtering and collecting the filter residue, drying the filter residue at 90° C. to obtain a matting agent.

[0073] The method for preparing a plastic film with a matte effect is characterized by comprising the following steps: Step 01), put 100kg polypropylene resin, 5kg masterbatch, 3kg anti-blocking agent, 0.15kg gloss regulator, and 17kg matting agent into a stirring kettle, rotate at 240r / min, stir for 20min, mix evenly, and obtain a mixture.

[0074] Step 02), the mixed material is put into a twin-screw extruder for extrusion granulation, and the processing temperatures of zones I-XI of the twin-screw extruder are controlled to be set to: 185°C, 185°C, 195°C, 205°C, 215°C, 215°C, 215°C, 220°C, 220°C, 220°C, and the screw speed is 40r / min to obtain masterbatch.

[0075] Step 03), the masterbatch is put into a twin-screw extruder and extruded into a tube embryo, and the processing temperature of the twin-screw extruder I-XI zone is controlled to be set to: 165°C, 165°C, 175°C, 185°C, 195°C, 195°C, 195°C, 200°C, 200°C, 200°C, the screw speed is 40r / min, and the extruded tube embryo is blown by a blow molding machine to obtain a plastic film with a thickness of 0.2mm and a matte effect.

[0076] Comparative Example 1 A plastic film with a matte effect, compared with Example 2, the only difference is: In the modified liquid, a plastic film with a matting effect is different from Example 2 only in that: In the modified liquid, silane coupling agent KH570 was used to replace tetrabutyl titanate in equal amounts.

[0077] Silane coupling agent KH570 was purchased from Shandong Huachen New Materials Co., Ltd.

[0078] Comparative Example 2 A plastic film with a matte effect, compared with Example 2, the only difference is: In the modified solution, diethoxydimethylsilane was used to replace cyclohexyl methacrylate in equal amounts.

[0079] Diethoxydimethylsilane was purchased from Shandong Guohua Chemical Co., Ltd.

[0080] Comparative Example 3 A plastic film with a matte effect, compared with Example 2, the only difference is: In the modified solution, methyl oleate was used to replace 2,2'-biphenyldicarboxylic acid in equal amounts.

[0081] Methyl oleate was purchased from Hunan Jinyu Fine Chemical Co., Ltd.

[0082] Comparative Example 4 A plastic film with a matte effect, compared with Example 2, the only difference is: In the modified solution, pentamethyldiethylenetriamine was replaced by an equal amount of imidazoline.

[0083] Imidazoline was purchased from Shandong Baifeng New Material Technology Co., Ltd.

[0084] Comparative Example 5 A plastic film with a matte effect, compared with Example 2, the only difference is: In the modified liquid, silane coupling agent KH570 is used to replace tetrabutyl titanate in equal amounts, diethoxydimethylsilane is used to replace cyclohexyl methacrylate in equal amounts, methyl oleate is used to replace 2,2'-biphenyldicarboxylic acid in equal amounts, and imidazoline is used to replace pentamethyldiethylenetriamine in equal amounts.

[0085] Silane coupling agent KH570 was purchased from Shandong Huachen New Materials Co., Ltd.

[0086] Diethoxydimethylsilane was purchased from Shandong Guohua Chemical Co., Ltd.

[0087] Methyl oleate was purchased from Hunan Jinyu Fine Chemical Co., Ltd.

[0088] Imidazoline was purchased from Shandong Baifeng New Material Technology Co., Ltd.

[0089] Comparative Example 6 A plastic film with a matte effect, compared with Example 2, the only difference is: In the matting agent, an equal amount of fumed silica is used to replace the magnesium borate whisker.

[0090] The fumed silica was purchased from Jinan DeLan Chemical Co., Ltd.

[0091] Comparative Example 7 A plastic film with a matte effect, compared with Example 2, the only difference is: In the matting agent, calcium sulfate whiskers are used to replace magnesium borate whiskers in equal amounts.

[0092] Calcium sulfate whiskers were purchased from Hubei Shineng Chemical Technology Co., Ltd.

[0093] Comparative Example 8 A plastic film with a matte effect, compared with Example 2, the only difference is: In the matting agent, magnesium oxide whiskers are used to replace magnesium metaborate whiskers in equal amounts.

[0094] The magnesium oxide whiskers were purchased from Qinghe County Ruijiang Metal Materials Co., Ltd.

[0095] Comparative Example 9 A plastic film with a matte effect, compared with Example 2, the only difference is: The matting agent is magnesium borate whisker which has not been modified.

[0096] Magnesium metaborate whiskers were purchased from Hubei Kewode Chemical Co., Ltd.

[0097] Experiment 1 According to GB / T1040.3-2006 "Determination of tensile properties of plastics Part 3: Test conditions for films and sheets", the tensile strength (MPa) of the test samples made of plastic films with matte effect in each embodiment and comparative example was tested.

[0098] Experiment 2 According to GB / T2410-2008 “Determination of light transmittance and haze of transparent plastics”, the light transmittance of the samples made of plastic films with matte effect in each embodiment and comparative example was tested.

[0099] The specific test data of Experiment 1-2 are shown in Table 1.

[0100] Table 1 According to the data comparison of each embodiment and the comparative example in Table 1, it can be obtained that the transmittance of each embodiment and the comparative example is similar, and it can be seen that the matting performance of each embodiment and the comparative example is similar, and the tensile strength of each embodiment is significantly higher than that of each comparative example. It can be seen that after the matting agent is added to each comparative example, it has a significant negative impact on the strength of the plastic film. The matting agent in each embodiment is modified by magnesium metaborate whiskers through a modification liquid prepared by compounding tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid, and pentamethyldiethylenetriamine. It can not only provide better matting performance for the plastic film, but also better maintain the strength of the plastic film, so that the strength of the plastic film is higher, and the plastic film has better physical properties, thereby better meeting the use requirements.

[0101] 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 modifications to the present embodiment without any creative contribution 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 plastic film with a matte effect, characterized in that: It is prepared from the following components in parts by weight: 100 parts of polypropylene resin; 3-5 parts of masterbatch; 1-3 parts of opening agent; Gloss regulator 0.05-0.15 parts; Matting agent 15-17 parts; The matting agent is obtained by modifying magnesium metaborate whiskers with a modifying liquid; The modified liquid is a compound of solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid and pentamethyldiethylenetriamine.

2. A plastic film with matte effect according to claim 1, characterized in that: In the modified liquid, the mass ratio of the solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid, and pentamethyldiethylenetriamine is 100:35-37:15-17:7-9:3-5.

3. The plastic film with matte effect according to claim 2, characterized in that: The solvent is ethanol.

4. A plastic film with matte effect according to any one of claims 1 to 3, characterized in that: The preparation method of the matting agent is as follows: Step 1), uniformly mixing the solvent, tetrabutyl titanate, cyclohexyl methacrylate, 2,2'-biphenyldicarboxylic acid and pentamethyldiethylenetriamine to obtain a modified solution; Step 2), putting the magnesium metaborate whiskers into the modification liquid, keeping the temperature at 55-60°C, and soaking for modification for 3-4 hours; Step 3), filtering and drying to obtain a matting agent.

5. The plastic film with matte effect according to claim 4, characterized in that: In the step 2), the mass ratio of magnesium metaborate whiskers to the modified liquid is 1:1-2.

6. The plastic film with matte effect according to claim 1, characterized in that: The gloss regulator is white mineral oil.

7. A method for preparing a plastic film with a matte effect according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 01), polypropylene resin, masterbatch, anti-blocking agent, gloss regulator, and matting agent are uniformly mixed to obtain a mixture; Step 02), extruding and granulating the mixed material to obtain masterbatch; Step 03), the masterbatch is extruded and blow-molded to obtain a plastic film with a matte effect.

8. The method for preparing a plastic film with a matte effect according to claim 7, characterized in that: In the step 02), the extrusion temperature is 210-220°C, and in the step 03), the extrusion temperature is 190-200°C.

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