CN110387127B - High-performance orthodontic chew and preparation method thereof - Google Patents
High-performance orthodontic chew and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention provides a high-performance orthodontic chew and a preparation method thereof, wherein the high-performance orthodontic chew is prepared from the following raw materials in parts by weight: 60-80 parts of silica gel, 10-30 parts of modified nano filler, 10-20 parts of organic siloxane modified styrene-butadiene rubber, 10-25 parts of maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, 1-5 parts of vulcanizing agent and 1-3 parts of cross-linking agent. The test result shows that the chew prepared by the invention has good mechanical strength, and the test result of the compression permanent deformation shows that the chew has good deformation resistance and rebound resilience. The method has the advantages of simple process, convenient operation, low cost, no generation of toxic pungent odor in the preparation process, safety, environmental protection, and high resilience and high biting resistance of the obtained chews. Therefore, the method has wide application prospect in the field of chew.
Description
Technical Field
The invention belongs to the technical field of orthodontic materials, and particularly relates to a high-performance orthodontic chew and a preparation method thereof.
Background
The gel is a silica gel rod which is matched with the invisible tooth socket to use when the invisible tooth socket is worn, and the invisible tooth socket can be better attached to teeth by using the gel to ensure the balance of the whole orthodontic force system in the process of correcting the teeth. Therefore, the use of the chewing gum mainly has the following functions: 1. the invisible tooth socket is more attached, and the gum can eliminate the gap between the tooth socket and the teeth, so that the tooth socket is more invisible, and the gap is smaller; 2. prevent the emergence of facing face because the tooth has some sour and soft after taking the facing, eat the thing and need take out the face of facing factors such as troublesome will lead to eating less thing than at ordinary times, and the use of chewing function also reduces, just probably leads to the occlusal force not enough, and face causes the marasmus easily, forms the facing, and the chews then can provide sufficient interlock dynamics.
The correct use of the chew is as follows: 1) substantially in place: the braces are surely worn in place before the use of the chewing gum, the chewing gum is used under the condition that the braces are not completely in place, the appliance can be damaged, and the correction effect can be influenced by the generated wrong correction force. 2) And (3) complete light biting: one end of the chew was held by hand and the other end was gently bitten into the mouth. From one side of the mouth to the other, it is ensured that each tooth is bitten. 3) Attention is paid to cleaning: the chewing gum is cleaned by water and put into the tooth kit after each use, thereby preventing bacterial contamination. If the chew loses elasticity or breaks, it needs to be replaced in time. Therefore, the chews have high requirements on the effects of restoring force, elasticity, easy cleaning, peculiar smell and the like.
The existing chews generally use styrene butadiene rubber, TPE or TPR (poor rebound resilience and seizure resistance). The styrene butadiene rubber has high raw material cost, high production difficulty, sharp cut end and difficult forming. TPE or TPR has poor rebound resilience and poor bite resistance. Therefore, there is a need to develop a bite block with better functionality.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a high-performance orthodontic chew and a preparation method thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
the high-performance orthodontic chew is prepared from the following raw materials in parts by weight: 60-80 parts of silica gel, 10-30 parts of modified nano filler, 10-20 parts of organic siloxane modified styrene-butadiene rubber, 10-25 parts of maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, 1-5 parts of vulcanizing agent and 1-3 parts of cross-linking agent;
the modified nano filler is one or a combination of more of modified attapulgite, modified sepiolite or modified white carbon black, and the preparation method of the modified nano filler comprises the following steps:
crushing the modified nano filler by using a crusher, dispersing the modified nano filler in an aqueous solution, stirring and mixing, adding polyethylene glycol, ultrasonically dispersing for 0.5-1.5h at the temperature of 30-40 ℃, collecting a precipitate through suction filtration, and drying the precipitate in vacuum to obtain the modified nano filler.
Preferably, the high-performance orthodontic chew is prepared from the following raw materials in parts by weight: 70 parts of silica gel, 20 parts of modified nano filler, 15 parts of organic siloxane modified styrene-butadiene rubber, 18 parts of maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, 3 parts of vulcanizing agent and 2 parts of crosslinking agent.
Further, the vulcanizing agent is 2, 3-dimercapto-quinoxaline, trimercapto-s-triazine, ethylene thiourea, bis-tert-butylperoxyisopropyl benzene or bis (3-triethoxysilylpropyl) tetrasulfide.
Further, the mass ratio of the polyethylene glycol to the modified nano filler is (5-10): 1.
further, the cross-linking agent is one or a combination of more of bis-tert-butylperoxyisopropyl benzene, triallyl isocyanurate and N, N' -difurfurylideneacetone.
Further, the method for preparing the high-performance orthodontic chew comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) mixing silica gel, modified nano filler, organic siloxane modified styrene-butadiene rubber and maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, treating at the temperature of 120-150 ℃ for 20-40min, and cooling to room temperature; then placing the mixture on an open mill or a kneading machine for mixing to prepare a mixed rubber material;
(3) and (3) adding a vulcanizing agent and a cross-linking agent into the rubber compound prepared in the step (2), and performing two-stage vulcanization treatment, namely performing mould pressing and one-stage vulcanization molding at the temperature of 160-200 ℃ and performing second-stage vulcanization at the temperature of 200-220 ℃ to prepare the high-performance orthodontic chew.
Further, the primary vulcanization time in the step (3) is 1-2h, and the secondary vulcanization time is 4-6 h.
Has the advantages that: the invention provides a high-performance orthodontic chew and a preparation method thereof, wherein the chew takes silica gel as a base material, modified nano filler, organic siloxane modified styrene-butadiene rubber and maleic anhydride grafted hydrogenated styrene-butadiene block copolymer are used as auxiliary materials, the modified nano filler is modified by PEG, so that hydroxyl groups are modified on the surface of the modified nano filler, and the modified nano filler, the organic siloxane modified styrene-butadiene rubber and the maleic anhydride grafted hydrogenated styrene-butadiene block copolymer can be bonded with silica gel surface groups, so that the mechanical strength and resilience of the silica gel are improved.
The test result shows that the chew prepared by the invention has good mechanical strength, and the test result of the compression permanent deformation shows that the chew has good deformation resistance and rebound resilience. The comparison with the comparative example shows that the addition of the modified nano filler has an important effect on the mechanical strength and the deformation resistance of the mastic, the influence of the modified styrene-butadiene rubber on the mechanical strength of the mastic is smaller than that of the modified nano filler, and the deformation resistance of the modified styrene-butadiene rubber is better than that of the modified nano filler.
The method has the advantages of simple process, convenient operation, low cost, no generation of toxic pungent odor in the preparation process, safety, environmental protection, and high resilience and high biting resistance of the obtained chews. Therefore, the method has wide application prospect in the field of chew.
Detailed Description
The present invention is further described below with reference to specific examples, which are only exemplary and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Example 1
The high-performance orthodontic chew is prepared from the following raw materials in parts by weight: the high-performance orthodontic chew is prepared from the following raw materials in parts by weight: 70 parts of silica gel, 20 parts of modified nano filler, 15 parts of organic siloxane modified styrene-butadiene rubber, 18 parts of maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, 3 parts of vulcanizing agent and 2 parts of crosslinking agent.
The modified nano filler is prepared from the following components in percentage by mass of 1: 1: 1, the preparation method of the modified nano filler comprises the following steps:
crushing the modified nano filler by using a crusher, dispersing the modified nano filler in an aqueous solution, stirring and mixing, adding polyethylene glycol, performing ultrasonic dispersion for 1h at the temperature of 35 ℃, collecting a precipitate through suction filtration, and performing vacuum drying on the precipitate to obtain the modified nano filler.
The vulcanizing agent is 2, 3-dimercapto-quinoxaline.
The mass ratio of the polyethylene glycol to the modified nano filler is 8: 1.
the cross-linking agent is bis-tert-butylperoxyisopropyl benzene.
The method for preparing the high-performance orthodontic chew comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) mixing silica gel, modified nano filler, organic siloxane modified styrene-butadiene rubber and maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, treating at 135 deg.C for 30min, and cooling to room temperature; then placing the mixture on an open mill or a kneading machine for mixing to prepare a mixed rubber material;
(3) and (3) adding a vulcanizing agent and a cross-linking agent into the mixed rubber material prepared in the step (2), and carrying out two-stage vulcanization treatment, wherein firstly, the mould pressing and one-stage vulcanization forming are carried out at the temperature of 180 ℃, and finally, the two-stage vulcanization is carried out at the temperature of 210 ℃ to prepare the high-performance orthodontic chew. The first-stage vulcanization time is 1.5h, and the second-stage vulcanization time is 5 h.
Example 2
The high-performance orthodontic chew is prepared from the following raw materials in parts by weight: 60 parts of silica gel, 10 parts of modified nano filler, 10 parts of organic siloxane modified styrene-butadiene rubber, 10 parts of maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, 1 part of vulcanizing agent and 1 part of crosslinking agent;
the modified nano filler is modified attapulgite, and the preparation method of the modified nano filler comprises the following steps:
crushing the modified nano filler by using a crusher, dispersing the crushed modified nano filler in an aqueous solution, stirring and mixing, adding polyethylene glycol, performing ultrasonic dispersion for 0.5h at the temperature of 30 ℃, collecting a precipitate through suction filtration, and performing vacuum drying on the precipitate to obtain the modified nano filler.
The vulcanizing agent is trimercapto-s-triazine.
The mass ratio of the polyethylene glycol to the modified nano filler is 5: 1.
the cross-linking agent is triallyl isocyanurate.
The method for preparing the high-performance orthodontic chew comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) mixing silica gel, modified nano filler, organic siloxane modified styrene-butadiene rubber and maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, treating at 120 ℃ for 20min, and cooling to room temperature; then placing the mixture on an open mill or a kneading machine for mixing to prepare a mixed rubber material;
(3) and (3) adding a vulcanizing agent and a cross-linking agent into the rubber compound prepared in the step (2), and carrying out two-stage vulcanization treatment, wherein firstly, mould pressing and one-stage vulcanization forming are carried out at the temperature of 160 ℃, and finally, two-stage vulcanization is carried out at the temperature of 200 ℃ to prepare the high-performance orthodontic chew. The first-stage vulcanization time is 1h, and the second-stage vulcanization time is 4 h.
Example 3
The high-performance orthodontic chew is prepared from the following raw materials in parts by weight: 65 parts of silica gel, 15 parts of modified nano filler, 12 parts of organic siloxane modified styrene-butadiene rubber, 15 parts of maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, 2 parts of vulcanizing agent and 1.5 parts of crosslinking agent;
the modified nano filler is modified sepiolite, and the preparation method of the modified nano filler comprises the following steps:
crushing the modified nano filler by using a crusher, dispersing the crushed modified nano filler in an aqueous solution, stirring and mixing, adding polyethylene glycol, performing ultrasonic dispersion for 0.8h at the temperature of 32 ℃, collecting a precipitate through suction filtration, and performing vacuum drying on the precipitate to obtain the modified nano filler.
The vulcanizing agent is ethylene thiourea.
The mass ratio of the polyethylene glycol to the modified nano filler is 6: 1.
the cross-linking agent is N, N' -difurfurylideneacetone.
The method for preparing the high-performance orthodontic chew comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) mixing silica gel, modified nano filler, organic siloxane modified styrene-butadiene rubber and maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, treating at 130 ℃ for 25min, and cooling to room temperature; then placing the mixture on an open mill or a kneading machine for mixing to prepare a mixed rubber material;
(3) and (3) adding a vulcanizing agent and a cross-linking agent into the rubber compound prepared in the step (2), and carrying out two-stage vulcanization treatment, wherein the first stage vulcanization forming is carried out by die pressing at the temperature of 170 ℃, and the second stage vulcanization is carried out at the temperature of 205 ℃ to prepare the high-performance orthodontic chew. The first-stage vulcanization time is 1.2h, and the second-stage vulcanization time is 4.5 h.
Example 4
The high-performance orthodontic chew is prepared from the following raw materials in parts by weight: 80 parts of silica gel, 30 parts of modified nano filler, 20 parts of organic siloxane modified styrene-butadiene rubber, 25 parts of maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, 5 parts of vulcanizing agent and 3 parts of crosslinking agent;
the modified nano filler is modified white carbon black, and the preparation method of the modified nano filler comprises the following steps:
crushing the modified nano filler by using a crusher, dispersing the crushed modified nano filler in an aqueous solution, stirring and mixing, adding polyethylene glycol, performing ultrasonic dispersion for 1.5 hours at the temperature of 40 ℃, collecting a precipitate through suction filtration, and performing vacuum drying on the precipitate to obtain the modified nano filler.
The vulcanizing agent is bis-tert-butylperoxyisopropyl benzene.
The mass ratio of the polyethylene glycol to the modified nano filler is 10: 1.
the cross-linking agent is bis-tert-butylperoxyisopropyl benzene.
The method for preparing the high-performance orthodontic chew comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) mixing silica gel, modified nano filler, organic siloxane modified styrene-butadiene rubber and maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, treating at 150 ℃ for 40min, and cooling to room temperature; then placing the mixture on an open mill or a kneading machine for mixing to prepare a mixed rubber material;
(3) and (3) adding a vulcanizing agent and a cross-linking agent into the rubber compound prepared in the step (2), and performing two-stage vulcanization treatment, namely performing mould pressing and one-stage vulcanization molding at the temperature of 160-200 ℃, and performing two-stage vulcanization at the temperature of 220 ℃ to prepare the high-performance orthodontic chew. The first-stage vulcanization time is 2 hours, and the second-stage vulcanization time is 6 hours.
Comparative example 1
Comparative example 1 differs from example 1 in that no modified nanofiller was added to comparative example 1.
Comparative example 2
Comparative example 2 is different from example 1 in that no organosiloxane-modified styrene-butadiene rubber was added in comparative example 2.
The chews prepared in examples 1-4 and comparative examples 1-2 were subjected to the following performance tests, the results of which are shown in Table 1: as can be seen from Table 1, the chews prepared by the method have good mechanical strength, and have good deformation resistance and good rebound resilience as shown by a compression permanent deformation test result. The comparison with the comparative example shows that the addition of the modified nano filler has an important effect on the mechanical strength and the anti-deformation capability of the mastic, the influence of the organic siloxane modified styrene-butadiene rubber on the mechanical strength of the mastic is smaller than that of the modified nano filler, and the anti-deformation performance of the organic siloxane modified styrene-butadiene rubber is better than that of the modified nano filler.
TABLE 1
Claims (6)
1. The high-performance orthodontic chew is characterized by being prepared from the following raw materials in parts by weight: 60-80 parts of silica gel, 10-30 parts of modified nano filler, 10-20 parts of organic siloxane modified styrene-butadiene rubber, 10-25 parts of maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, 1-5 parts of vulcanizing agent and 1-3 parts of cross-linking agent;
the modified nano filler is one or a combination of more of modified attapulgite, modified sepiolite or modified white carbon black, and the preparation method of the modified nano filler comprises the following steps:
crushing the modified nano filler by using a crusher, dispersing the modified nano filler in an aqueous solution, stirring and mixing, adding polyethylene glycol, ultrasonically dispersing for 0.5-1.5h at the temperature of 30-40 ℃, collecting a precipitate through suction filtration, and drying the precipitate in vacuum to obtain the modified nano filler;
the preparation method of the high-performance orthodontic chew comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) mixing silica gel, modified nano filler, organic siloxane modified styrene-butadiene rubber and maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, treating at the temperature of 120-150 ℃ for 20-40min, and cooling to room temperature; then placing the mixture on an open mill or a kneading machine for mixing to prepare a mixed rubber material;
(3) and (3) adding a vulcanizing agent and a cross-linking agent into the rubber compound prepared in the step (2), and performing two-stage vulcanization treatment, namely performing mould pressing and one-stage vulcanization molding at the temperature of 160-200 ℃ and performing second-stage vulcanization at the temperature of 200-220 ℃ to prepare the high-performance orthodontic chew.
2. The high-performance orthodontic chew of claim 1, characterized in that the high-performance orthodontic chew is prepared from the following raw materials in parts by weight: 70 parts of silica gel, 20 parts of modified nano filler, 15 parts of organic siloxane modified styrene-butadiene rubber, 18 parts of maleic anhydride grafted hydrogenated styrene-butadiene block copolymer, 3 parts of vulcanizing agent and 2 parts of crosslinking agent.
3. The high performance orthodontic chew of claim 1 wherein the vulcanizing agent is 2, 3-dimercapto-quinoxaline, trimercapto-s-triazine, ethylene thiourea, bis-t-butylperoxyisopropyl benzene or bis (3-triethoxysilylpropyl) tetrasulfide.
4. The high-performance orthodontic chew of claim 1, characterized in that the mass ratio of the polyethylene glycol to the modified nano filler is (5-10): 1.
5. the high-performance orthodontic chew of claim 1, wherein the cross-linking agent is one or a combination of bis (tert-butylperoxyisopropyl) benzene, triallylisocyanurate or N, N' -bisfurfurylideneacetone.
6. The high performance orthodontic chew of claim 1, wherein in step (3) the curing time is 1-2 hours and the curing time is 4-6 hours.
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| CN112641483A (en) * | 2020-12-22 | 2021-04-13 | 江苏省中医药研究院 | Automatic pressing hemostasis device after tooth extraction |
| CN112812420B (en) * | 2021-02-02 | 2023-01-06 | 廊坊崔氏电缆材料股份有限公司 | Low-smoke halogen-free cable material containing functional compatilizer and preparation thereof |
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| US20100249296A1 (en) * | 2006-04-13 | 2010-09-30 | Kaneka Corporation | Rubber stopper composition and medical rubber stopper |
| JP4442700B2 (en) * | 2008-05-19 | 2010-03-31 | 横浜ゴム株式会社 | Pneumatic tire and manufacturing method thereof |
| CN101781413B (en) * | 2010-03-22 | 2011-08-24 | 福建师范大学 | Preparation method of rare earth coordination crosslinking rubber |
| CN103709582B (en) * | 2013-12-24 | 2016-11-02 | 盛嘉伦橡塑(深圳）股份有限公司 | Gutta percha material and preparation method thereof |
| CN104817804A (en) * | 2015-04-16 | 2015-08-05 | 东莞市利鸿塑胶有限公司 | TPE (Thermoplastic Elastomer) material for medical supplies |
| DE102016103822A1 (en) * | 2016-03-03 | 2017-09-07 | Kraiburg Tpe Gmbh & Co. Kg | A thermoplastic elastomer composition of an elastomer, a non-elastomeric polyolefin and a thermoplastic polyolefin block copolymer-based elastomer |
| CN106220927A (en) * | 2016-08-09 | 2016-12-14 | 安徽微威胶件集团有限公司 | A kind of abrasion-resistant rubber cushion material compositions |
| CN206534715U (en) * | 2016-10-19 | 2017-10-03 | 青岛兰信医学科技有限公司 | A kind of correction chew rod |
| CN106977924A (en) * | 2017-03-24 | 2017-07-25 | 合肥羿振电力设备有限公司 | It is a kind of for composite insulating material of cable and preparation method thereof |
| CN107513272A (en) * | 2017-10-09 | 2017-12-26 | 金箍棒工业产品设计江阴有限公司 | A kind of silica gel of solid-state containing rice meal and preparation method thereof |
| CN108276625B (en) * | 2018-01-25 | 2019-11-22 | 温州鑫彩鸿安防科技有限公司 | A kind of safety shoe resistant to high temperatures and its manufacturing method |
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| CN109251402A (en) * | 2018-08-22 | 2019-01-22 | 东莞市安高瑞新材料科技有限公司 | Fire-retardant electromagnetic shielding thermoplastic elastomer (TPE) nanocomposite of one kind and preparation method thereof |
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Effective date of registration: 20220906 Address after: Room 511, Block C, Building 5, Innovation Center, No. 117, Zhujiang Road, High-tech Zone, Suzhou City, Jiangsu Province, 215000 Patentee after: SUZHOU DUOMEIXIN HEALTH TECHNOLOGY CO.,LTD. Address before: No.28, Kehua Road, Suzhou, Jiangsu Province, 215000 Patentee before: SUZHOU HEALTH College |