CN116270400A - 一种健齿固齿的牙膏及其制备方法 - Google Patents
一种健齿固齿的牙膏及其制备方法 Download PDFInfo
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- CN116270400A CN116270400A CN202310460048.XA CN202310460048A CN116270400A CN 116270400 A CN116270400 A CN 116270400A CN 202310460048 A CN202310460048 A CN 202310460048A CN 116270400 A CN116270400 A CN 116270400A
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Abstract
本发明公开了一种健齿固齿的牙膏及其制备方法,所述牙膏包括中药组分、防腐剂组分、摩擦剂组分、起泡剂组分、成膜剂组分和小分子水凝胶组分;中药组分包括桉油、绿茶提取物、五倍子提取物、青盐和炮附子提取物,防腐剂组分包括苯扎氯铵、苯佐卡因、薄荷醇和氯化锌;所述制备方法包括油凝胶乳化液、油凝胶颗粒、水凝胶前驱体、牙膏前体及牙膏成品的制备。本发明利用桉油与乙基纤维素乳化生产油凝胶颗粒,利用壳聚糖和葛根素在研磨稀化后自组装成水凝胶主体,油凝胶颗粒可吸收和去除油性污渍,并可在牙齿表面形成一层保护膜,并组合使用多种具有消炎、抗菌、镇痛及改善牙齿松动功能的中西药成分,对牙齿表面及口腔内伤口均有保护和辅助治疗效果。
Description
技术领域
本发明涉及口腔护理技术领域,尤其涉及一种健齿固齿的牙膏及其制备方法。
背景技术
随着社会的发展,越来越多的现代人开始重视起口腔健康。牙膏是许多人日常使用的清洁牙齿和清新口气的产品。虽然牙膏可以有效去除牙菌斑、提供健齿固齿或脱敏的效果、并在口腔中提供清洁、清新的感觉。
但牙膏的酸碱度、漂白剂以及摩擦剂往往会影响牙齿的坚固程度,如酸碱度过高、氧化性过强以及摩擦剂颗粒过大和浓度过高,均会造成在刷洗过程中对牙齿产生二次磨损或二次腐蚀副作用,严重时甚至会提高牙齿敏感的风险。
另外一方面,还要考虑牙膏组分在牙齿表面的粘附性及对牙齿缺陷的填充保护作用,因此需要对现有牙膏组分进行系统更改和复配,以在足够健齿固齿功能的基础上,最大程度地降低对牙齿的损伤风险。
发明内容
本发明的目的是为了解决现有技术中存在的缺点,而提出的一种健齿固齿的牙膏及其制备方法。
为了实现上述目的,本发明采用了如下技术方案:
本发明首先提出一种健齿固齿的牙膏,包括以下重量百分比组分:20~30%中药组分、5~10%防腐剂组分、20~30%摩擦剂组分、1~3%起泡剂组分、5~10%成膜剂组分和30~40%小分子水凝胶组分;
中药组分包括桉油、绿茶提取物、五倍子提取物、青盐和炮附子提取物,其中桉油、绿茶提取物、五倍子提取物、青盐和炮附子提取物的重量比例为1:0.3~0.4:0.2~0.4:0.05~0.1:0.2~0.3;
桉油是由桉树叶榨油提取而得,桉油含有桉油素、α-松油醇、d-α-蒎烯、乙酸松油酯、芦丁等,可以清除导致龋齿和牙龈疾病的细菌,使牙齿和牙龈保持强壮。使用小剂量的桉油,将有助于支撑强壮的牙齿,防止牙齿贴面、假牙和成人牙套的生菌;桉油通常会被添加到市场上的大多数漱口水和牙科产品中,在使用桉油后,大多数人声称他们的嘴感觉清新、更干净,呼吸更清新。
绿茶提取物是指通过70~80℃的水浸提所得的水溶性提取物,该水溶性提取物通过浓缩干燥得到粉末;绿茶的叶子中含有高浓度的氟化物,这有助于其与茶叶中存在的其他成分一起发挥抑龋作用。绿茶中的几种多酚对龋齿有预防作用;
五倍子提取物是取五倍子蚜寄生部分碾碎所得的提取物粉末,用在牙膏起到败火止血作用;
青盐是卤化物类石盐族湖盐结晶体,是从盐湖中直接采出的盐和以盐湖卤水为原料在盐田中晒制而成的盐。主含氯化钠,次含微量元素硅、铁、铝和宏量元素钙、镁,另含少量微量元素锰、钛、锶。青盐本身具有中药药效,用在牙膏中具有治疗齿舌出血和减轻牙痛的作用;青盐可提高牙膏中的矿物质含量,提高盐度,使牙膏含有较高的盐离子,促进杀菌、镇痛及活血消肿的作用,可用来辅助治疗牙龈肿痛;
炮附子提取物是指采用毛莨科乌头属植物乌头的子根经过去毒处理后得到的乌头,并将去毒乌头经过70~80℃的水浸提所得的水溶性提取物,该水溶性提取物通过浓缩干燥得到粉末,其中含有多种生物碱,用在牙膏中具有止痛和消炎作用;
防腐剂组分包括苯扎氯铵、苯佐卡因、薄荷醇和氯化锌,苯扎氯铵、苯佐卡因、薄荷醇和氯化锌的重量比例为1:100~200:1.5~2:1.2~1.5;
苯扎氯铵为阳离子表面活性剂类广谱杀菌剂,用于口腔除菌;苯佐卡因,即对氨基苯甲酸乙酯,临床上用于创面、溃疡面、烧伤、皮肤擦裂及痔的镇痛、止痒,在牙膏中用来麻醉止痛的作用;薄荷醇起消炎、止痛、止痒、促进血液循环、减轻浮肿等功效;氯化锌用于除菌。
优选地,桉油、苯扎氯铵、苯佐卡因、薄荷醇、起泡剂组分及成膜剂组分与乙基纤维素混合形成油凝胶颗粒,其余组分与乙酸水溶液形成水凝胶主体,油凝胶颗粒和水凝胶主体组成牙膏成品。
优选地,牙膏成品还包括辅料和水,辅料包括香精、味觉改良剂、外观改良剂和酸碱缓冲剂,辅料总质量占牙膏成品总质量的1~15%。辅料用来调节牙膏成品口感及性状,水用来控制牙膏成品的浓度和粘度。
优选地,摩擦剂组分包括二水磷酸氢钙、方解石粉、沉淀二氧化硅、无水焦磷酸钙、氢氧化铝中的至少一种。
优选地,起泡剂组分为月桂醇硫酸酯钠和月桂酰肌氨酸钠中的至少一种。
优选地,成膜剂组分为丙烯酸树脂,丙烯酸树脂具体是通过丙烯酸、甲基丙烯酸和丙烯酸酯类单体共聚所得,丙烯酸树脂的聚合度为2000~4000,丙烯酸树脂中丙烯酸、甲基丙烯酸和丙烯酸酯类单体的摩尔比为1:1:0.8~1.2,聚合条件为:温度70-100℃,催化剂为过氧化物或偶氮类,参考现有有关聚合工艺技术,在此不做一一列举,丙烯酸酯类单体包括甲基丙烯酸甲酯、甲基丙烯酸乙酯、甲基丙烯酸正丁酯、羟甲基丙烯酸乙酯中的至少一种。
优选地,小分子水凝胶具体是由壳聚糖和葛根素在乙酸水溶液中形成的小分子水凝胶,小分子水凝胶中,壳聚糖和葛根素的质量比为1:1。其中壳聚糖的脱乙酰化度为70-85%。
为了制得前述的一种健齿固齿的牙膏,本发明还提供相应的制备方法,包括以下步骤:
S1、油凝胶乳化液的制备:
低速搅拌下,在75±5℃中投入成膜剂组分和乙基纤维素,形成淤浆,转为中速搅拌,剪切降低粘度,并加入乙基纤维素或水,调节至中速搅拌下的体系粘度为5-10cP,再投入桉油、苯扎氯铵、苯佐卡因、薄荷醇和起泡剂组分,经过乳化处理,得到油凝胶乳化液,控制固含量为3-4wt%;
油凝胶乳化液降低至室温出现分层,由于桉油密度小于水,上层为呈现非牛顿流体的油凝胶A,下层为水溶液B;
S2、油凝胶颗粒的制备及粉末包裹:
将摩擦剂组分经过粉碎机初步粉碎至粒径200μm以下,投入到研磨粉碎机中,采用80#~120#的研磨剂,研磨至粒径小于30μm;
取出研磨剂,再加入S1的油凝胶A,继续研磨混合,形成表面粘附有摩擦剂的油凝胶颗粒C,取出备用;
取S1的水溶液B一部分,投入乙酸,配置0.5wt%的乙酸水溶液D,并分为两个批次使用;取S1的水溶液B另一部分作为溶剂使用;采用溶剂对研磨粉碎机进行清洗2-3次,合并得到清洗液E;
S3、水凝胶前驱体的制备:
将小分子水凝胶组分、绿茶提取物、五倍子提取物、青盐、炮附子提取物和氯化锌依次投入到研磨粉碎机中,在研磨剪切的混合作用后,加入部分的乙酸水溶液D溶剂化并研磨直至乙酸挥发,加入溶剂进一步分散,并加入另一部分的乙酸水溶液D,将研磨粉碎机中溶液体系投入到高速剪切均质机,并用溶剂对研磨粉碎机清洗1-2次,得到的清洗液F与清洗液E合并投入到高速剪切均质机,15000r/min搅拌2~5min,静置5min,得到水凝胶前驱体G;
S4、牙膏前体的制备:
将油凝胶颗粒C及辅料加入到新制的水凝胶前驱体G中,低速搅拌5min,并调节体系pH呈微酸性,测试pH为5.7~6.4,并测试体系粘度为10~15cP,得到牙膏前体H;
当粘度高于15cP,添加溶剂或纯水降低粘度,当粘度低于10cP,则反馈至S3中以减少S3的溶剂加入量;
S5、牙膏成品的灌装:
在低速搅拌下,将牙膏前体H灌装至产品容器中,产品容器包括牙膏皮或牙膏瓶,室温下静置6~8小时后,变成具有一定弹性且保水的、膏状的成品牙膏H。
需要说明的是,壳聚糖本身也是天然胶黏剂,并附带增稠作用,无需再加入其他的增稠剂,葛根素也是一种中药消炎剂,但本申请主要利用二者自组装成小分子水凝胶,并利用其剪切稀化及静置凝胶的特性,包装时可直接挤压灌装,后静置成型,简化生产包装;
在刷洗过程中摩擦剂滚动摩擦带动油凝胶颗粒破坏,且在刷动过程中包含乙基纤维素及成膜剂组分的油凝胶也有剪切稀化效果,缓慢释放有效防腐剂组分,避免其对牙齿和口腔的刺激副作用;
并且油凝胶颗粒具有吸油特性,可在各表面活性剂作用下,在摩擦过程中可将口腔内的油脂及牙齿表面的油性污渍吸附带走,提高洁牙效率;
在刷动过程中,油凝胶颗粒被水凝胶中的水进行溶剂交换和溶胀作用,乙基纤维素及成膜剂也逐渐释放到水凝胶作用中,而且水凝胶主体和油凝胶颗粒均有剪切液固转化的特性,可通过牙膏在牙刷和牙齿之间的剪切过程中逐渐稀化成粘稠液(10~20s),并粘附在牙齿表面,并在乙基纤维素及成膜剂组分的辅助成膜作用下,在牙齿表面形成一层保护膜;
保护膜有两方面作用:一方面保护口腔出血口或溃疡处,并且含有多种中药组分,对伤口进行较长时间的消炎、抗菌及修复保护作用;另一方面可堵住牙齿表面的钙腐蚀通道,避免酸性或其他刺激性物质对牙齿过度侵蚀;
在漱口清洗后,保护膜变薄但不会完全消失但厚度较薄且较均匀(厚度约为10~50μm),在不受到冲击的情况下可维持5~6小时不脱落,在饮食咀嚼或汤食冲刷过程中可维持半小时左右,半小时后膜完全脱落,不再有保护作用,因此应该在本发明所得产品的使用说明书中添加备注:请在主食、汤水及饮料食用结束后宜再次刷牙,可对牙齿起到全天候保护;葛根素(PUE)具有抗菌消炎、抗氧化防御和氧化应激缓解的特性,对牙齿也有消炎消肿效果。
优选地,低速搅拌的搅拌速度为30-50r/min,中速搅拌的搅拌速度为800-1500r/min,通过高速剪切降低体系粘度,再通过乳化处理。
优选地,S1中的乳化处理的具体操作为:用高速剪切均质机(SRH-S300)进行均质,转速为18000r/min,时间为2min,4℃储存备用。
与现有技术相比,本发明的有益效果是:
1.针对现有牙膏中各种活性组分的水溶解性,一方面利用油类组分——桉油与乙基纤维素的油凝胶,从而将具有西药成分的防腐剂组分以及难溶的抗菌剂——桉油组合在一起形成油凝胶颗粒,另一方面利用壳聚糖和葛根素在研磨稀化后可自组装成小分子水凝胶的特性,将溶于水的中药组分及其他组分置于水凝胶主体中,将粘附有摩擦剂组分的油凝胶颗粒和水凝胶主体混合,该结构在完全凝胶前可直接灌装包装后,形成包裹有油凝胶颗粒的水凝胶膏体结构,简化生产包装;
2.本发明提出的新型凝胶法牙膏成品在牙刷刷牙的剪切稀化及造泡作用下,油凝胶颗粒和摩擦剂组分充分配合,有效吸收和去除油性污渍,大幅提高牙齿及口腔清洁效率,提高健齿固齿作用。
3.本发明利用水凝胶主体和油凝胶颗粒均有剪切液固转化的特性,可通过牙膏在牙刷和牙齿之间的剪切过程中逐渐稀化成粘稠液(10~20s),并粘附在牙齿表面,并在乙基纤维素及成膜剂组分的辅助成膜作用下,在牙齿表面形成一层保护膜,对牙齿表面及口腔内伤口均有保护作用;
4.本发明利用多种具有消炎、抗菌及镇痛功能的中西药成分的组合使用,对有牙龈红肿、牙周炎及口腔溃疡的症状有明显的辅助治疗效果,有利于保护伤口,缓释有效成分,有助于治疗牙痛和牙龈疾病,加强牙齿基础,并可改善患者的饮食刺激性和失眠。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。
基于前人的工作,CS和PUE可以方便地组装成由机械力触发的纳米纤维水凝胶。水凝胶的形成与纳米纤维结构的聚集密切相关。同时,非共价相互作用诱导的自组装CS@PUE(C@P)水凝胶具有剪切稀化和自愈能力,可注射到不规则伤口中。水凝胶的特殊结构和理化性质可以有效地破坏细菌电荷平衡,就像带正电的操纵器捕获带负电荷的细菌一样,可以显着提高抗菌能力。
参照现有制备方法:50g壳聚糖(CS)和50g葛根素(PUE)投入到研磨粉碎机中,在研磨剪切的混合作用后,加入0.3L的0.5wt%乙酸水溶液溶剂化并研磨直至乙酸挥发,加入到另一个9L超纯水以进一步分散,加入1L的0.5wt%乙酸水溶液,混合物变得均匀和粘稠,室温下保持混合物12小时后获得小分子水凝胶(一般简称为C@P水凝胶)。
一、本发明的制备例组:
一种健齿固齿的牙膏的制备方法,包括以下步骤:
S1、油凝胶乳化液的制备:
低速搅拌下,在75±5℃中投入成膜剂组分和乙基纤维素,形成淤浆,转为中速搅拌,剪切降低粘度,并加入乙基纤维素或水,调节至中速搅拌下的体系粘度为5-10cP,再投入桉油、苯扎氯铵、苯佐卡因、薄荷醇和起泡剂组分,经过乳化处理,得到油凝胶乳化液,控制固含量为3-4wt%;
油凝胶乳化液降低至室温出现分层,由于桉油密度小于水,上层为呈现非牛顿流体的油凝胶A,下层为水溶液B;
S2、油凝胶颗粒的制备及粉末包裹:
将摩擦剂组分经过粉碎机初步粉碎至粒径200μm以下,投入到研磨粉碎机中,采用80#~120#的研磨剂,研磨至粒径小于30μm;
取出研磨剂,再加入S1的油凝胶A,继续研磨混合,形成表面粘附有摩擦剂的油凝胶颗粒C,取出备用;
取S1的水溶液B一部分,投入乙酸,配置0.5wt%的乙酸水溶液D,并分为两个批次使用;取S1的水溶液B另一部分作为溶剂使用;采用溶剂对研磨粉碎机进行清洗2-3次,合并得到清洗液E;
S3、水凝胶前驱体的制备:
将小分子水凝胶组分、绿茶提取物、五倍子提取物、青盐、炮附子提取物和氯化锌依次投入到研磨粉碎机中,在研磨剪切的混合作用后,加入部分的乙酸水溶液D溶剂化并研磨直至乙酸挥发,加入溶剂进一步分散,并加入另一部分的乙酸水溶液D,将研磨粉碎机中溶液体系投入到高速剪切均质机,并用溶剂对研磨粉碎机清洗1-2次,得到的清洗液F与清洗液E合并投入到高速剪切均质机,15000r/min搅拌2~5min,静置5min,得到水凝胶前驱体G;
S4、牙膏前体的制备:
将油凝胶颗粒C及辅料加入到新制的水凝胶前驱体G中,低速搅拌5min,并调节体系pH呈微酸性,测试pH为5.7~6.4,并测试体系粘度为10~15cP,得到牙膏前体H;
当粘度高于15cP,添加溶剂或纯水降低粘度,当粘度低于10cP,则反馈至S3中以减少S3的溶剂加入量;
S5、牙膏成品的灌装:
在低速搅拌下,将牙膏前体H灌装至产品容器中,产品容器包括牙膏皮或牙膏瓶,室温下静置6~8小时后,变成具有一定弹性且保水的、膏状的成品牙膏H。
各制备例中成品牙膏H的成分含量表,如表1所示:
表1.成品牙膏的成分含量表
二、牙膏前体的静置粘度变化试验,见表2:
表2.牙膏前体的静置粘度变化试验
观察静置过程中牙膏前体H的粘度变化,取10组牙膏前体H作为试验,体系粘度从10~15cP在前两个小时内逐步增加至15~20cP,再后两个小时内逐步增加至30~35cP,再后两个小时内逐步增加至80~105cP,最后形成透明凝胶,透明凝胶为均质且溶于水的中药组分及其他组分,透明凝胶内部均匀分布有油凝胶颗粒,油凝胶颗粒内部充满难溶于水的防腐剂组分,且油凝胶颗粒表面的摩擦剂被充分湿润。
三、中西药用组分的对比制备例组:
分别删除与制备例1中的绿茶提取物、五倍子提取物、青盐、炮附子提取物、苯扎氯铵、薄荷醇、氯化锌,考察牙模刷洗的除菌效果与制备例1的区别,刷洗过程:先用牙刷蘸取牙膏成品H,刷洗30-60s,而后用水冲洗10-20s,再用牙刷刷洗20-30s,再用水冲洗10-20s,检测成膜状态、美白效果、除菌效果的区别,见表3:
表3.刷牙试验一
表明各种中西药组分均有相互促进作用,说明该配方中各药性组分都具有协同作用。
四、油凝胶颗粒的对比制备例组:
弃用制备例1中的乙基纤维素,具体包括以下步骤:
1)水凝胶前驱体的制备:
将制备例1中除乙基纤维素外的各组分投入到研磨粉碎机中,在研磨剪切的混合作用后,加入部分的0.5wt%乙酸水溶液并研磨直至乙酸挥发,加入水进一步分散,并加入另一部分的0.5wt%乙酸水溶液,将研磨粉碎机中溶液体系投入到高速剪切均质机,并用水对研磨粉碎机清洗1-2次,得到的清洗液投入到高速剪切均质机,15000r/min搅拌2~5min,静置5min,得到水凝胶前驱体;
2)牙膏前体的制备:
将辅料加入到新制的水凝胶前驱体中,低速搅拌5min,并调节体系pH呈微酸性,测试pH为5.7~6.4,并测试体系粘度为10~15cP,得到牙膏前体H;
3)牙膏成品的灌装:
在低速搅拌下,将牙膏前体H灌装至产品容器中,产品容器包括牙膏皮或牙膏瓶,室温下静置6~8小时后,变成具有一定弹性且保水的、膏状的成品牙膏。
所得成品牙膏进行除油实验、除菌测试以及药效残留时间
表4.刷牙试验二
金黄色葡萄球菌是口腔溃疡及牙周炎的主要菌种,通过测试,可知道桉油和苯佐卡因对治疗口腔溃疡有明显除菌药效,乙基纤维素及其形成的油凝胶有明显除油促进效果和成膜辅助作用,从而严重影响刷牙后水溶5min+冲洗5min的药效停留时间。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (10)
1.一种健齿固齿的牙膏,其特征在于,包括以下重量百分比组分:20~30%中药组分、5~10%防腐剂组分、20~30%摩擦剂组分、1~3%起泡剂组分、5~10%成膜剂组分和30~40%小分子水凝胶组分;
所述中药组分包括桉油、绿茶提取物、五倍子提取物、青盐和炮附子提取物,其中桉油、绿茶提取物、五倍子提取物、青盐和炮附子提取物的重量比例为1:0.3~0.4:0.2~0.4:0.05~0.1:0.2~0.3;
所述防腐剂组分包括苯扎氯铵、苯佐卡因、薄荷醇和氯化锌,苯扎氯铵、苯佐卡因、薄荷醇和氯化锌的重量比例为1:100~200:1.5~2:1.2~1.5。
2.根据权利要求1所述的一种健齿固齿的牙膏,其特征在于,所述桉油、苯扎氯铵、苯佐卡因、薄荷醇、起泡剂组分及成膜剂组分与乙基纤维素混合形成油凝胶颗粒,其余组分与乙酸水溶液形成水凝胶主体,油凝胶颗粒和水凝胶主体组成牙膏成品。
3.根据权利要求2所述的一种健齿固齿的牙膏,其特征在于,所述牙膏成品还包括辅料和水,所述辅料包括香精、味觉改良剂、外观改良剂和酸碱缓冲剂,辅料总质量占牙膏成品总质量的1~15%。
4.根据权利要求1所述的一种健齿固齿的牙膏,其特征在于,所述摩擦剂组分包括二水磷酸氢钙、方解石粉、沉淀二氧化硅、无水焦磷酸钙、氢氧化铝中的至少一种。
5.根据权利要求1所述的一种健齿固齿的牙膏,其特征在于,所述起泡剂组分为月桂醇硫酸酯钠和月桂酰肌氨酸钠中的至少一种。
6.根据权利要求1所述的一种健齿固齿的牙膏,其特征在于,所述成膜剂组分为丙烯酸树脂,所述丙烯酸树脂具体是通过丙烯酸、甲基丙烯酸和丙烯酸酯类单体共聚所得,所述丙烯酸树脂的聚合度为2000~4000,所述丙烯酸树脂中丙烯酸、甲基丙烯酸和丙烯酸酯类单体的摩尔比为1:1:0.8~1.2,所述丙烯酸酯类单体包括甲基丙烯酸甲酯、甲基丙烯酸乙酯、甲基丙烯酸正丁酯、羟甲基丙烯酸乙酯中的至少一种。
7.根据权利要求1所述的一种健齿固齿的牙膏,其特征在于,所述小分子水凝胶具体是由壳聚糖和葛根素在乙酸水溶液中形成的小分子水凝胶,所述小分子水凝胶中,壳聚糖和葛根素的质量比为1:1。
8.根据权利要求1所述的一种健齿固齿的牙膏的制备方法,其特征在于,包括以下步骤:
S1、油凝胶乳化液的制备:
低速搅拌下,在75±5℃中投入成膜剂组分和乙基纤维素,形成淤浆,转为中速搅拌,剪切降低粘度,并加入乙基纤维素或水,调节至中速搅拌下的体系粘度为5-10cP,再投入桉油、苯扎氯铵、苯佐卡因、薄荷醇和起泡剂组分,经过乳化处理,得到油凝胶乳化液,控制固含量为3-4wt%;
油凝胶乳化液降低至室温出现分层,由于桉油密度小于水,上层为呈现非牛顿流体的油凝胶A,下层为水溶液B;
S2、油凝胶颗粒的制备及粉末包裹:
将摩擦剂组分经过粉碎机初步粉碎至粒径200μm以下,投入到研磨粉碎机中,采用80#~120#的研磨剂,研磨至粒径小于30μm;
取出研磨剂,再加入S1的油凝胶A,继续研磨混合,形成表面粘附有摩擦剂的油凝胶颗粒C,取出备用;
取S1的水溶液B一部分,投入乙酸,配置0.5wt%的乙酸水溶液D,并分为两个批次使用;取S1的水溶液B另一部分作为溶剂使用;采用溶剂对研磨粉碎机进行清洗2-3次,合并得到清洗液E;
S3、水凝胶前驱体的制备:
将小分子水凝胶组分、绿茶提取物、五倍子提取物、青盐、炮附子提取物和氯化锌依次投入到研磨粉碎机中,在研磨剪切的混合作用后,加入部分的乙酸水溶液D溶剂化并研磨直至乙酸挥发,加入溶剂进一步分散,并加入另一部分的乙酸水溶液D,将研磨粉碎机中溶液体系投入到高速剪切均质机,并用溶剂对研磨粉碎机清洗1-2次,得到的清洗液F与清洗液E合并投入到高速剪切均质机,15000r/min搅拌2~5min,静置5min,得到水凝胶前驱体G;
S4、牙膏前体的制备:
将油凝胶颗粒C及辅料加入到新制的水凝胶前驱体G中,低速搅拌5min,并调节体系pH呈微酸性,测试pH为5.7~6.4,测试并调节体系粘度为10~15cP,得到牙膏前体H;
S5、牙膏成品的灌装:
在低速搅拌下,将牙膏前体H灌装至产品容器中,产品容器包括牙膏皮或牙膏瓶,室温下静置6~8小时后,变成具有弹性且保水的、膏状的成品牙膏H。
9.根据权利要求8所述的一种健齿固齿的牙膏的制备方法,其特征在于,所述低速搅拌的搅拌速度为30-50r/min,所述中速搅拌的搅拌速度为800-1500r/min。
10.根据权利要求8所述的一种健齿固齿的牙膏的制备方法,其特征在于,所述S1中的乳化处理的具体操作为:用高速剪切均质机进行均质,转速为18000r/min,时间为2min,4℃储存备用。
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