Transparent silicone rubber composition with antibacterial effect
By adding silver ion glass antibacterial agent and sea kale seed oil to silicone rubber, combined with other components, the problem of both antibacterial performance and transparency is solved, and the high antibacterial performance and tensile strength is improved, and the expansion is achieved. The application range of silicone rubber.
Patent Information
- Application Number
- CN202411358116.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When existing antibacterial silicone rubbers maintain a transparent appearance, their antibacterial performance is insufficient, making it difficult to achieve both high antibacterial performance and transparent appearance.
Vegetable oil is made of silver ion glass antibacterial agent, sea cabbage seed oil, Eucommia seed oil, and neem oil, combined with methyl vinyl silicone rubber raw rubber, filler, silicone rubber structure control agent, internal film removal agent, and surface treatment agent and vulcanizing agent, a transparent silicone rubber composition with antibacterial effect is prepared to improve its antibacterial properties and tensile strength.
It realizes that silicone rubber maintains a transparent appearance while maintaining high antibacterial properties, significantly improves its tensile strength and expands its application range.
Abstract
Description
Technical Field
[0001] The invention relates to the field of silicone rubber materials, in particular to a transparent silicone rubber composition with antibacterial effect. Background Art
[0002] Silicone rubber refers to a rubber whose main chain is composed of alternating silicon and oxygen atoms, and the silicon atom is usually attached to two organic groups.
[0003] Silicone rubber does not have antibacterial effect, which limits its application. In order to make silicone rubber have antibacterial properties, antibacterial materials are usually added to silicone rubber to make it have certain antibacterial properties. However, a major feature of silicone rubber is its high transparency. In order to improve the antibacterial properties of existing antibacterial silicone rubber, antibacterial agents are added, which makes it difficult for silicone rubber to maintain a transparent appearance. If the antibacterial agent is added to maintain a transparent appearance, the effect of the added antibacterial agent is relatively general, resulting in poor antibacterial properties of silicone rubber. It is difficult for existing silicone rubber to achieve high antibacterial properties while maintaining a good transparent appearance, which still limits the application of silicone rubber. Therefore, there is still room for improvement. Summary of the invention
[0004] In order to improve the antibacterial performance of silicone rubber while maintaining a good transparent appearance, the present application provides a transparent silicone rubber composition with antibacterial effect.
[0005] The present application provides a transparent silicone rubber composition with antibacterial effect using the following technical solution: A transparent silicone rubber composition with antibacterial effect, comprising the following components in parts by mass: 100 parts of methyl vinyl silicone rubber; 30-50 parts of filler; 3-6 parts of silicone rubber structure control agent; Silver ion glass antibacterial agent 0.5-10 parts; Internal release agent 0.02-0.5 parts; Surface treatment agent 0.3-2 parts; 1.2-1.5 parts of vulcanizing agent; 15-21 parts of vegetable oil; The vegetable oil is a compound of crambe seed oil, eucommia seed oil and neem oil.
[0006] By adopting the above technical scheme, by adding silver ion glass antibacterial agent, crambe seed oil, eucommia seed oil and neem oil into silicone rubber, the antibacterial performance of silicone rubber is improved while the transparency of silicone rubber is not easily affected, so that silicone rubber has high antibacterial performance while maintaining a transparent appearance.
[0007] Moreover, when a compound of vegetable oils such as crambe seed oil, eucommia seed oil and neem oil is added to silicone rubber, the tensile strength of silicone rubber can be significantly improved, which can effectively improve the physical properties of silicone rubber and make silicone rubber have a wider application.
[0008] Preferably, the mass ratio of crambe seed oil, eucommia seed oil and neem oil is 7-9:3-5:5-7.
[0009] By adopting the above technical scheme and specifically selecting the mass ratio of crambe seed oil, eucommia seed oil and neem oil, the antibacterial performance is improved, and at the same time, the tensile strength of silicone rubber can be more significantly improved, so that the performance of silicone rubber is better.
[0010] Preferably, the preparation method of the vegetable oil is as follows: Step 1), mixing crambe seed oil, eucommia seed oil and neem oil to obtain a mixed oil; Step 2), adding decolorizing activated carbon into the mixed oil, stirring for 90-120 minutes, filtering out the decolorizing activated carbon, and obtaining vegetable oil.
[0011] By adopting the above technical solution and using decolorizing activated carbon for decolorization, the vegetable oil can be made more transparent and have fewer impurities, so that the prepared silicone rubber can better maintain a transparent appearance and has a wider application.
[0012] Preferably, in the step 2), after adding the decolorized activated carbon, the mixture is heated to 60-70° C. and stirred at a constant temperature.
[0013] By adopting the above technical solution and heating to 60-70° C., the decolorization effect is better and the prepared silicone rubber is more transparent.
[0014] Preferably, the filler is fumed silica.
[0015] By adopting the above technical solution and specifically selecting fumed silica, the filler has less influence on the transparency of silicone rubber, and can achieve a better reinforcement effect while maintaining a high transparency of silicone rubber.
[0016] Preferably, the silicone rubber structure control agent is hydroxy silicone oil.
[0017] By adopting the above technical solution and specifically selecting hydroxy silicone oil, the silicone rubber is more stable, can be stably stored for a long time, and has a higher economic value.
[0018] Preferably, the internal release agent is zinc stearate.
[0019] By adopting the above technical solution and specifically selecting zinc stearate, silicone products can be demoulded more easily, the processing difficulty can be reduced, and the product quality can be improved.
[0020] Preferably, the surface treatment agent is vinyltrimethoxysilane.
[0021] By adopting the above technical solution and specifically selecting vinyltrimethoxysilane, the durability and antioxidant properties of silicone rubber are improved and the quality of silicone rubber is better.
[0022] Preferably, the vulcanizing agent is a platinum vulcanizing agent.
[0023] By adopting the above technical solution and specifically selecting a platinum vulcanizing agent, the vulcanized silicone rubber has higher strength and better quality.
[0024] In summary, this application has the following beneficial effects: 1. The present application adds silver ion glass antibacterial agent, crambe seed oil, eucommia seed oil and neem oil to silicone rubber, so that the antibacterial performance of silicone rubber is better and the transparency of silicone rubber is not easily affected. The silicone rubber has high antibacterial performance while maintaining a transparent appearance. The tensile strength of silicone rubber can be significantly improved, and the physical properties of silicone rubber can be effectively improved, so that silicone rubber has a wider application.
[0025] 2. In the present application, it is preferred to specifically select the mass ratio of crambe seed oil, eucommia seed oil and neem oil to make the antibacterial performance better, and at the same time, the tensile strength of silicone rubber can be more significantly improved, so that the performance of silicone rubber is better.
[0026] 3. In the present application, decolorization is preferably performed by using decolorizing activated carbon to make the vegetable oil more transparent and contain fewer impurities, so that the prepared silicone rubber can better maintain a transparent appearance and has a wider application. DETAILED DESCRIPTION
[0027] The present application is further described in detail below with reference to the embodiments.
[0028] Example 1 A transparent silicone rubber composition with antibacterial effect, comprising the following components: Methyl vinyl silicone rubber, filler, silicone rubber structure control agent, silver ion glass antibacterial agent, internal release agent, surface treatment agent, vulcanizing agent, vegetable oil.
[0029] The methyl vinyl silicone rubber raw rubber was purchased from Dongguan Shuangao Plastic Co., Ltd., brand 110-1.
[0030] The filler is fumed silica purchased from Cabot, model: TS-610.
[0031] The silicone rubber structure control agent is hydroxy silicone oil, purchased from Shandong Juneng Chemical Co., Ltd., model JN-204.
[0032] Silver ion glass antibacterial agent was purchased from Anhui Zhenghe Yaju New Material Technology Co., Ltd.
[0033] The internal release agent is zinc stearate, which is commercially available and has a CAS number of 557-05-1.
[0034] The surface treatment agent is vinyl trimethoxy silane, which is commercially available with a CAS number of 2768-02-7.
[0035] The vulcanizing agent is a platinum vulcanizing agent purchased from Wuhan Kemik Biopharmaceutical Technology Co., Ltd., platinum vulcanizing agent MY510.
[0036] The vegetable oil is a compound of crambe seed oil, eucommia seed oil and neem oil.
[0037] The preparation method of vegetable oil is as follows: Step 1), 7kg of crambe seed oil, 3kg of eucommia seed oil and 5kg of neem oil are put into a stirred tank, the rotation speed is 120r / min, and the stirring is carried out for 3min to obtain a mixed oil.
[0038] Step 2), add 5 kg of decolorizing activated carbon into the mixed oil, heat to 60°C, rotate at 60 r / min, stir for 90 min, filter through 80 mesh filter cloth, filter out the decolorizing activated carbon, and obtain vegetable oil.
[0039] Crambe seed oil was sourced from commercially available, physically pressed oil.
[0040] Eucommia seed oil is derived from commercially available, physically pressed oil.
[0041] Neem oil is sourced from commercially available, physically pressed oil.
[0042] The decolorized activated carbon was purchased from Henan Songshan Technology Co., Ltd., 12-24 mesh.
[0043] The preparation method of the transparent silicone rubber composition having antibacterial effect is as follows: Step 01), put 100kg methyl vinyl silicone rubber, 30kg fumed silica, 3kg hydroxy silicone oil, 0.5kg silver ion glass antibacterial agent, 0.02kg zinc stearate, 0.3kg vinyl trimethoxy silane, and 15kg vegetable oil into an internal mixer, rotate at 45r / min, press the bolt for 30s, and lift the bolt for 30s.
[0044] Step 02), rotate at 55r / min, press the plug until the silicone rubber temperature reaches 140°C, discharge the rubber, and produce the sheet to obtain the masterbatch.
[0045] Step 03), the masterbatch is placed in a sealed environment at 0.01 MPa and vacuum treated for 30 min to obtain a pretreated rubber.
[0046] Step 04), put 150.02kg of pretreated rubber and 1.2kg of platinum vulcanizer into a double-roll mill, with a roller spacing of 2mm, and thin pass 10 times to obtain a sheet to obtain the final rubber.
[0047] Step 05), placing the final rubber mixture into a mold, pressing the mold at a pressure of 10 MPa, vulcanizing at 120° C. for 3 minutes, and demolding to obtain a transparent silicone rubber composition with antibacterial effect.
[0048] Example 2 A transparent silicone rubber composition with antibacterial effect, comprising the following components: Methyl vinyl silicone rubber, filler, silicone rubber structure control agent, silver ion glass antibacterial agent, internal release agent, surface treatment agent, vulcanizing agent, vegetable oil.
[0049] The methyl vinyl silicone rubber raw rubber was purchased from Dongguan Shuangao Plastic Co., Ltd., brand 110-1.
[0050] The filler is fumed silica purchased from Cabot, model: TS-610.
[0051] The silicone rubber structure control agent is hydroxy silicone oil, purchased from Shandong Juneng Chemical Co., Ltd., model JN-204.
[0052] Silver ion glass antibacterial agent was purchased from Anhui Zhenghe Yaju New Material Technology Co., Ltd.
[0053] The internal release agent is zinc stearate, which is commercially available and has a CAS number of 557-05-1.
[0054] The surface treatment agent is vinyl trimethoxy silane, which is commercially available with a CAS number of 2768-02-7.
[0055] The vulcanizing agent is a platinum vulcanizing agent purchased from Wuhan Kemik Biopharmaceutical Technology Co., Ltd., platinum vulcanizing agent MY510.
[0056] The vegetable oil is a compound of crambe seed oil, eucommia seed oil and neem oil.
[0057] The preparation method of vegetable oil is as follows: Step 1), 8kg of crambe seed oil, 4kg of eucommia seed oil and 6kg of neem oil are put into a stirring kettle, the rotation speed is 120r / min, and the stirring is carried out for 3min to obtain a mixed oil.
[0058] Step 2), add 6 kg of decolorizing activated carbon into the mixed oil, heat to 65°C, rotate at 60 r / min, stir for 105 min, filter through 80 mesh filter cloth, filter out the decolorizing activated carbon, and obtain vegetable oil.
[0059] Crambe seed oil was sourced from commercially available, physically pressed oil.
[0060] Eucommia seed oil is derived from commercially available, physically pressed oil.
[0061] Neem oil is sourced from commercially available, physically pressed oil.
[0062] The decolorized activated carbon was purchased from Henan Songshan Technology Co., Ltd., 12-24 mesh.
[0063] The preparation method of the transparent silicone rubber composition having antibacterial effect is as follows: Step 01), put 100kg methyl vinyl silicone rubber, 40kg fumed silica, 4.5kg hydroxy silicone oil, 5kg silver ion glass antibacterial agent, 0.25kg zinc stearate, 1kg vinyl trimethoxy silane, and 18kg vegetable oil into an internal mixer at a speed of 45r / min, press the bolt for 30s, and lift the bolt for 30s.
[0064] Step 02), rotate at 55r / min, press the plug until the silicone rubber temperature reaches 150°C, discharge the rubber, and produce the sheet to obtain the masterbatch.
[0065] Step 03), the masterbatch is placed in a sealed environment at 0.01 MPa and vacuum treated for 45 minutes to obtain a pretreated rubber.
[0066] Step 04), put 168.75kg of pretreated rubber and 1.35kg of platinum vulcanizer into a double-roll mill, with a roller spacing of 2mm, and thin pass 10 times to obtain a sheet to obtain the final rubber.
[0067] Step 05), placing the final rubber mixture into a mold, pressing the mold at a pressure of 10 MPa, vulcanizing at 120° C. for 3 minutes, and demolding to obtain a transparent silicone rubber composition with antibacterial effect.
[0068] Example 3 A transparent silicone rubber composition with antibacterial effect, comprising the following components: Methyl vinyl silicone rubber, filler, silicone rubber structure control agent, silver ion glass antibacterial agent, internal release agent, surface treatment agent, vulcanizing agent, vegetable oil.
[0069] The methyl vinyl silicone rubber raw rubber was purchased from Dongguan Shuangao Plastic Co., Ltd., brand 110-1.
[0070] The filler is fumed silica purchased from Cabot, model: TS-610.
[0071] The silicone rubber structure control agent is hydroxy silicone oil, purchased from Shandong Juneng Chemical Co., Ltd., model JN-204.
[0072] Silver ion glass antibacterial agent was purchased from Anhui Zhenghe Yaju New Material Technology Co., Ltd.
[0073] The internal release agent is zinc stearate, which is commercially available and has a CAS number of 557-05-1.
[0074] The surface treatment agent is vinyl trimethoxy silane, which is commercially available with a CAS number of 2768-02-7.
[0075] The vulcanizing agent is a platinum vulcanizing agent purchased from Wuhan Kemik Biopharmaceutical Technology Co., Ltd., platinum vulcanizing agent MY510.
[0076] The vegetable oil is a compound of crambe seed oil, eucommia seed oil and neem oil.
[0077] The preparation method of vegetable oil is as follows: Step 1), 9kg of crambe seed oil, 5kg of eucommia seed oil and 7kg of neem oil are put into a stirred tank, the rotation speed is 120r / min, and the stirring is carried out for 3min to obtain a mixed oil.
[0078] Step 2), add 7kg of decolorizing activated carbon into the mixed oil, heat to 70°C, rotate at 60r / min, stir for 120min, filter through 80-mesh filter cloth, filter out the decolorizing activated carbon, and obtain vegetable oil.
[0079] Crambe seed oil was sourced from commercially available, physically pressed oil.
[0080] Eucommia seed oil is derived from commercially available, physically pressed oil.
[0081] Neem oil is sourced from commercially available, physically pressed oil.
[0082] The decolorized activated carbon was purchased from Henan Songshan Technology Co., Ltd., 12-24 mesh.
[0083] The preparation method of the transparent silicone rubber composition having antibacterial effect is as follows: Step 01), put 100kg methyl vinyl silicone rubber, 50kg fumed silica, 6kg hydroxy silicone oil, 10kg silver ion glass antibacterial agent, 0.5kg zinc stearate, 2kg vinyl trimethoxy silane, and 21kg vegetable oil into an internal mixer, rotate at 45r / min, press the bolt for 30s, and lift the bolt for 30s.
[0084] Step 02), rotate at 55r / min, press the plug until the silicone rubber temperature reaches 160°C, discharge the rubber, and produce the sheet to obtain the masterbatch.
[0085] Step 03), the masterbatch is placed in a sealed environment at 0.02 MPa and vacuum treated for 60 min to obtain a pretreated rubber.
[0086] Step 04), put 191kg of pretreated rubber and 1.5kg of platinum vulcanizer into a double-roll mill, with a roller spacing of 2mm, and thin pass 10 times to obtain a sheet to obtain the final rubber.
[0087] Step 05), placing the final rubber mixture into a mold, pressing the mold at a pressure of 10 MPa, vulcanizing at 120° C. for 3 minutes, and demolding to obtain a transparent silicone rubber composition with antibacterial effect.
[0088] Comparative Example 1 A transparent silicone rubber composition with antibacterial effect, compared with Example 2, the only difference is: Among vegetable oils, an equal amount of Acer truncatum seed oil was used to replace Sea kale seed oil.
[0089] Acer truncatum seed oil is derived from commercially available, physically pressed oil.
[0090] Comparative Example 2 A transparent silicone rubber composition with antibacterial effect, compared with Example 2, the only difference is: Among vegetable oils, an equal amount of seabuckthorn seed oil is used to replace eucommia seed oil.
[0091] Sea buckthorn seed oil is derived from commercially available, physically pressed oil.
[0092] Comparative Example 3 A transparent silicone rubber composition with antibacterial effect, compared with Example 2, the only difference is: Among vegetable oils, replace neem oil with an equal amount of canola oil.
[0093] Canola oil was sourced from commercially available, physically pressed oil.
[0094] Comparative Example 4 A transparent silicone rubber composition with antibacterial effect, compared with Example 2, the only difference is: Among vegetable oils, an equal amount of Acer truncatum seed oil is used to replace crambe seed oil; an equal amount of sea buckthorn seed oil is used to replace eucommia seed oil; an equal amount of canola seed oil is used to replace neem oil.
[0095] Acer truncatum seed oil is derived from commercially available, physically pressed oil.
[0096] Sea buckthorn seed oil is derived from commercially available, physically pressed oil.
[0097] Canola oil was obtained from commercially available, physically pressed oil.
[0098] Experiment 1 According to ISO 22196:2011 "Measurement of antibacterial and fire toxicity of plastics and other non-porous surfaces", the antibacterial rate of the test samples prepared from the transparent silicone rubber composition with antibacterial effect of each embodiment and comparative example was tested.
[0099] Experiment 2 According to GB / T 1701-2001 “Determination of tensile strength and elongation at break of hard rubber”, the tensile strength of the test samples prepared from the transparent silicone rubber composition with antibacterial effect of each embodiment and comparative example was tested.
[0100] Experiment 3 According to the methods of each embodiment and comparative example, a test sample with a length, width and height of 10 cm was prepared. After being placed at room temperature for 24 hours, its appearance was observed and recorded.
[0101] The specific experimental data of Experiments 1-3 are shown in Table 1.
[0102] Table 1 Antibacterial rate (%) Tensile strength(MPa) Appearance Example 1 ＞99.9％ 9.5 transparent Example 2 ＞99.9％ 10.3 transparent Example 3 ＞99.9％ 9.8 transparent Comparative Example 1 98.7 6.5 transparent Comparative Example 2 94.6 6.9 transparent Comparative Example 3 96.1 6.8 transparent Comparative Example 4 93.2 6.3 transparent According to the data comparison of each embodiment and the comparative example in Table 1, it can be obtained that the antibacterial performance of each embodiment is higher than that of each comparative example, and the tensile strength is significantly higher than that of each comparative example. It can be seen that when the vegetable oil prepared by crambe seed oil, eucommia seed oil and neem oil is added to the silicone rubber, the antibacterial performance can be further improved, and the tensile strength can be significantly improved, so that the physical properties and antibacterial properties of the silicone rubber are improved.
[0103] Although vegetable oils were added to the comparative examples and had good antibacterial properties, their antibacterial properties were slightly reduced compared with the embodiments. However, the vegetable oils in the comparative examples destroyed the compounding system of crambe seed oil, eucommia seed oil and neem oil, so that the effect of improving the tensile strength was relatively general, resulting in a significant decrease in tensile strength compared with the embodiments.
[0104] 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 transparent silicone rubber composition having an antibacterial effect, characterized in that: The composition includes the following components in parts by weight: 100 parts of methyl vinyl silicone rubber; 30-50 parts of filler; 3-6 parts of silicone rubber structure control agent; Silver ion glass antibacterial agent 0.5-10 parts; Internal release agent 0.02-0.5 parts; Surface treatment agent 0.3-2 parts; 1.2-1.5 parts of vulcanizing agent; 15-21 parts of vegetable oil; The vegetable oil is a compound of crambe seed oil, eucommia seed oil and neem oil.
2. A transparent silicone rubber composition with antibacterial effect according to claim 1, characterized in that: The mass ratio of the crambe seed oil, eucommia seed oil and neem oil is 7-9:3-5:5-7.
3. A transparent silicone rubber composition with antibacterial effect according to claim 2, characterized in that: The preparation method of the vegetable oil is as follows: Step 1), mixing crambe seed oil, eucommia seed oil and neem oil to obtain a mixed oil; Step 2), add decolorizing activated carbon into the mixed oil, stir for 90-120 minutes, filter out the decolorizing activated carbon, and obtain vegetable oil.
4. A transparent silicone rubber composition with antibacterial effect according to claim 3, characterized in that: In the step 2), after adding the decolorized activated carbon, the mixture is heated to 60-70° C. and stirred at a constant temperature.
5. The transparent silicone rubber composition with antibacterial effect according to claim 1, characterized in that: The filler is fumed silica.
6. The transparent silicone rubber composition with antibacterial effect according to claim 1, characterized in that: The silicone rubber structure control agent is hydroxy silicone oil.
7. The transparent silicone rubber composition with antibacterial effect according to claim 1, characterized in that: The internal release agent is zinc stearate.
8. The transparent silicone rubber composition with antibacterial effect according to claim 1, characterized in that: The surface treatment agent is vinyltrimethoxysilane.
9. The transparent silicone rubber composition with antibacterial effect according to claim 1, characterized in that: The vulcanizing agent is a platinum vulcanizing agent.