A kind of temperature-reducing paste
Technical field
The invention belongs to medicochemistry article compositions field, relate in particular to a kind of temperature-reducing paste.
Background technology
Clinical cooling measure commonly used mainly contains two kinds, and a kind of is Physical temperature-lowering, and a kind of is drug cooling.Any cool-down method of concrete application should decide according to patient's age, physique and the degree of heat.Drug cooling has advantages such as effect is obvious, method of use is simple; In clinical; Antipyretic and analgesic commonly used at present has Frosst) (Xaxa), Paracetamol USP23,BP98 (PARACETAMOL BP98), INDOMETHACIN BP99 (indomethacin), Ibuprofen BP/EP etc.; But these Side effects of pharmaceutical drugs are surprising or irreversible to the liver kidney and the gastral infringement of infant, and drug cooling has a lot of contraindications, as: there is the patient of antipyretic allergies should forbid febrifugee; Also should be prudent when the patient of allergic constitution uses febrifugee; Serious liver damage, vitamin K deficiency person, haemophiliac and have the patient of asthma history should avoid the use of Frosst), in case hemorrhage with bring out asthma; Pyramidon can cause agranulocytosis, and period in a medicine is as finding granulocytopenia drug withdrawal immediately.So febrifugee can not be taken for a long time, otherwise can cause acute and chronic poisoning.General body temperature below 39 ℃ preferably without drug cooling.
Traditional physical cooling method has: 1. watch-keeping cubicle warm therapy; 2. 34 ~ 35 ℃ of warm water or 30 ℃ of 25% ~ 30% ethanol songe bath method; 3. ice compress method; 4. icy salt solution bowel lavage or administration by gavage; 5. hypothermic blanket continues falling temperature method; 6. vein falling temperature method etc.Above cool-down method has been widely used in clinical by the doctor, played different cooling-down effects.But above method is more loaded down with trivial details, and what have also can cause toxic side effects.
Novel physical cooling method mainly refers to high-molecular gel temperature-reducing paste falling temperature method; Its cool principle is the evaporation through moisture in its staple hydrogel; Take away the human heat, thereby reach the purpose of local cooling, the cooling-down effect of product depends primarily on the moisture content in the hydrogel.This series products does not need refrigerating apparatus, does not need setup time, unpacks during use, leans on viscosity own to be affixed on forehead or other positions, and it is comparatively convenient to use.[Chinese invention patent 201020583841.7] provides a kind of cooling paster of measurable temperature, is made up of non-woven fabrics, hydrogel and plastics film, it is characterized in that hydrogel is divided into different temperature zones, and temperature-sensitive colour changing thermal indicutor sheet is arranged in each temperature zone.But there are many defectives in present existing temperature-reducing paste product, and is generally shorter like temperature fall time, is generally about 2-3 hour, and only for once using, increased patient's use cost virtually; Existing temperature-reducing paste is many to carry out auxiliary temperature-reducing through adding traditional Chinese medicine ingredients such as peppermint, borneol; This type traditional Chinese medicine ingredients is through stimulating human nerve; Make the people produce refrigerant sensation; But really do not play the effect that reduces the temperature protection brain cell, and these pharmaceutical cpds there are bigger hormesis to eye and wound, make troubles to the patient easily during use.[Chinese invention patent 201020239963.4] relates to a kind of reusable bacterial cellulose hydrogel temperature-reducing plaster, comprises macromolecule membrane layer and bacteria cellulose aquagel functional layer.[Chinese invention patent 200720192944.9] relates to a kind of Physical temperature-lowering and pastes; Comprise nonwoven layer, plastic film layers and hydrophilic high molecular material functional layer, it is characterized in that being mixed with in the hydrophilic high molecular material functional layer peppermint and/or borneol natural phant elite.
Therefore, have that a kind of production technique is simple, no side effects, easy to use, the temperature-reducing paste product demand fast of lowering the temperature.
In addition; High according to water-soluble cooling paster because of water cut; Can take away human heat's characteristics rapidly; Its Application Areas is also in continuous expansion, has been applied to alleviating pain, refreshment, relaxs one's muscles, improves sleep, fields such as medicine, sports goods, beauty treatment, articles for daily use such as skin moisture-keeping beauty treatment.
Summary of the invention
The objective of the invention is to propose a kind of temperature-reducing paste of temperature with high efficiency easily and fast.
The present invention adopts following technical scheme to achieve these goals:
A kind of temperature-reducing paste is characterized in that: be made up of following components in weight percentage:
Vinylformic acid 1-3%
Non-ionic celluloses ether 0.05-0.3% with temperature sensitive property
Z 150PH 3-6%
Pregelatinized Starch 0.3-1%
Linking agent 0.05-0.3%
Initiator 0.05-0.3%
Water surplus;
The preparation method may further comprise the steps:
(1) adds initiator by mass percentage in the aqueous solution of mixing by mass percentage to the non-ionic celluloses ether with temperature sensitive property and vinylformic acid; Under nitrogen protection, descend reaction after 8-12 minute in 35-40 ℃; Add the linking agent stirring reaction by mass percentage after 5-6 hour, the liquid concentrator of Mierocrystalline cellulose/acrylate/nano gel;
(2) with Z 150PH and pregelatinized Starch clear soln that is mixed with soluble in water under microwave-assisted, again to the liquid concentrator that wherein adds Mierocrystalline cellulose/acrylate/nano gel, poured into behind the mould freezing 2-3 hour, repeated freezing 2-5 time promptly gets.
Described a kind of temperature-reducing paste is characterized in that: described linking agent refers to a kind of in N ' N-methylene-bisacrylamide, diacetyl oxide, the MALEIC ANHYDRIDE.
Described a kind of temperature-reducing paste is characterized in that: described initiator refers to Potassium Persulphate or ammonium persulphate.
Described a kind of temperature-reducing paste is characterized in that: described non-ionic celluloses ether with temperature sensitive property refers to a kind of in HPMC ether, hydroxypropylcelluloether ether, the methyl cellulose ether.
Described a kind of temperature-reducing paste is characterized in that: the described Z 150PH polymerization degree is 1350-2050.
Described a kind of temperature-reducing paste is characterized in that: the temperature of described freezing operation is not for being higher than-12 ℃.
Described a kind of temperature-reducing paste is characterized in that: described microwave-assisted operation refers to Z 150PH and pregelatinized Starch soluble in water, puts into microwave reactor reaction 5-10 second again.
Principle of the present invention is:
Polyvinyl alcohol hydrogel of the present invention has excellent biological compatibility, can not cause any stimulation or sense of discomfort to human body skin, is fit to children's and uses.Z 150PH can replace with Expex, has good swelling property and water-retentivity equally.
Pregelatinized Starch of the present invention is used for improving the molding time and the shaping strength of polyvinyl alcohol hydrogel.
Temperature-reducing paste of the present invention can contain flavouring agent to bring the various fragrance of a flower or fruit smell to product, makes child patient be easy to receive treatment.
These article are not limited to as the Physical temperature-lowering product, can be used for alleviating pain, refreshment equally, relax one's muscles, improve sleep, etc. fields such as medicine, sports goods, articles for daily use.
Beneficial effect of the present invention: advantage of the present invention is; Lower critical solution temperature with HPMC/ROHM composite Nano gel of temperature sensitivity is 38 ℃, when children's's forehead temperature is higher than 38 ℃, and bleeding; Moisture evaporation in the hydrogel is taken away the heat of human body; When temperature is lower than 38 ℃, the gel swelling once again that absorbs water, thus realize reusable.The present invention has the temperature sensitivity of quick response, can reach the effect of fast cooling.This product safety is reliable, relies on Physical temperature-lowering fully.
Description of drawings
Fig. 1 is the sign collection of illustrative plates of the present invention under transmission electron microscope;
Fig. 2 is for testing cooling-down effect figure of the present invention with the anthropomorphic temperature of thermostatically heating template die;
Fig. 3 is the cooling-down effect comparison diagram of ordinary gel paster and paster of the present invention.
Embodiment
Non-limiting examples is narrated as follows:
Embodiment 1, get 0.4 g HPMC and 8.0 g vinylformic acid are dissolved in the 90 ml zero(ppm) water; Add 0.35 g Potassium Persulphate then; Charge into nitrogen; Temperature rises to 38 ℃, and preheating adds 0.35 g N ' N-methylene-bisacrylamide after 10 minutes, and stirring reaction must be received the liquid concentrator of gel in 5 hours; Getting 4.5 g Z 150PH (polymerization degree is 1950) and 0.65 g pregelatinized Starch then is dissolved under microwave assistant in the 75 ml zero(ppm) water; Fully after the dissolving; The gel concentrate of receiving of getting 25 ml adds in this solution, cold slightly after, pour into and put into refrigerated tank (15 ℃) in the mould and thaw after freezing 2.5 hours; Circulate 2 times, must contain and receive the hydrogel temperature-reducing plaster of gel.
Fig. 2 is cooling-down effect figure---with the anthropomorphic temperature test of thermostatically heating template die cooling-down effect; Temperature-reducing paste placed respectively on 37 ℃, 38 ℃, 39 ℃ the thermostatically heating plate; Measured the temperature of the temperature-constant plate (being temperature-reducing paste and temperature-constant plate contact surface) under the temperature-reducing paste in per 10 minutes respectively, test constantly 180 min.Shown in accompanying drawing 2, X-coordinate is the attaching time, and ordinate zou is measured temperature.From scheme, can draw, when the temperature-constant plate temperature was 38 ℃ of left and right sides before subsides were used, paste with temperature decline obvious (about 33.5 ℃) behind 10 min; Paste with about 34.5 ℃ of local temperatures behind 30 min, paste and weaken about 35 ℃ of local temperatures with cooling-down effect behind 1 h gradually; In 3 hours working lipe, the temperature of temperature-constant plate less than 38 ℃ of beginning, explains that temperature-reducing paste plays cooling effect always always; Compare with other two groups, cooling-down effect is obvious.
Fig. 3 receives the cooling-down effect figure of cooling paster of gel for the ordinary gel paster with containing, and from figure, can find out significantly that the ordinary gel paster does not have cooling-down effect basically.
Embodiment 2, get 0.45 g HPMC and 7.2 g vinylformic acid are dissolved in the 90 ml zero(ppm) water; Add 0.4 g Potassium Persulphate then; Charge into nitrogen; Temperature rises to 38 ℃, and preheating adds 0.4 g N ' N-methylene-bisacrylamide after 10 minutes, and stirring reaction must be received the liquid concentrator of gel in 6 hours; Getting 4.8 g Z 150PH (polymerization degree is 1800) and 0.8 g pregelatinized Starch then is dissolved under microwave assistant in the 70 ml zero(ppm) water; Fully after the dissolving; The gel concentrate of receiving of getting 25 ml adds in this solution, cold slightly after, pour into and put into refrigerated tank (20 ℃) in the mould and thaw after freezing two hours; Circulate 2 times, must contain and receive the hydrogel temperature-reducing plaster of gel.
Embodiment 3, get 0.4 g HPMC, 0.35 g MALEIC ANHYDRIDE and 8.0 g vinylformic acid mixing solutionss and be dissolved in the 90 ml zero(ppm) water; Add 0.35 g ammonium persulphate then; Charge into nitrogen, temperature rises to 38 ℃, and stirring reaction must be received the liquid concentrator of gel in 5 hours; Getting 5 g Z 150PH (polymerization degree is 1750) and 0.6 g pregelatinized Starch then is dissolved under microwave assistant in the 75 ml zero(ppm) water; Fully after the dissolving; The gel concentrate of receiving of getting 25 ml adds in this solution, cold slightly after, pour into and put into refrigerated tank (12 ℃) in the mould and thaw after freezing 3 hours; Circulate 3 times, must contain and receive the hydrogel temperature-reducing plaster of gel.
Embodiment 4, get 0.4 g HPMC and 6.0 g vinylformic acid are dissolved in the 90 ml zero(ppm) water; Add 0.4 g Potassium Persulphate then; Charge into nitrogen; Temperature rises to 38 ℃, and preheating adds 0.4 g N ' N-methylene-bisacrylamide after 10 minutes, and stirring reaction must be received the liquid concentrator of gel in 5 hours; Getting 4.5 g Z 150PH (polymerization degree is 1950) and 0.6 g pregelatinized Starch then is dissolved under microwave assistant in the 75 ml zero(ppm) water; Fully after the dissolving; The gel concentrate of receiving of getting 25 ml adds in this solution, cold slightly after, pour into and put into refrigerated tank (15 ℃) in the mould and thaw after freezing 2.5 hours; Circulate 2 times, must contain and receive the hydrogel temperature-reducing plaster of gel.
Embodiment 5, get 0.38 g HPMC and 6.8 g vinylformic acid are dissolved in the 90 ml zero(ppm) water; Add 0.35 g Potassium Persulphate then; Charge into nitrogen; Temperature rises to 38 ℃, and preheating adds 0.35 g N ' N-methylene-bisacrylamide after 10 minutes, and stirring reaction must be received the liquid concentrator of gel in 5 hours; Getting 5 g Z 150PH (polymerization degree is 1850) and 0.65 g pregelatinized Starch then is dissolved under microwave assistant in the 75 ml zero(ppm) water; Fully after the dissolving; The gel concentrate of receiving of getting 25 ml adds in this solution, cold slightly after, pour into and put into refrigerated tank (20 ℃) in the mould and thaw after freezing 2 hours; Circulate 2 times, must contain and receive the hydrogel temperature-reducing plaster of gel.
Embodiment 6, a kind of temperature-reducing paste are made up of following components in weight percentage:
Vinylformic acid 1%
Non-ionic celluloses ether 0.3% with temperature sensitive property
Z 150PH 3%
Pregelatinized Starch 1%
Linking agent 0.3%
Initiator 0.3%
Water surplus;
The preparation method may further comprise the steps:
(1) adds initiator by mass percentage in the aqueous solution of mixing by mass percentage to the non-ionic celluloses ether with temperature sensitive property and vinylformic acid; Under nitrogen protection, descend reaction after 10 minutes in 40 ℃; Add the linking agent stirring reaction by mass percentage after 5 hours, the liquid concentrator of Mierocrystalline cellulose/acrylate/nano gel;
(2) with Z 150PH and pregelatinized Starch clear soln that is mixed with soluble in water under microwave-assisted, again to the liquid concentrator that wherein adds Mierocrystalline cellulose/acrylate/nano gel, poured into behind the mould freezing 2 hours, freeze cycle 2 times promptly gets.
Described linking agent refers to diacetyl oxide.
Described initiator refers to Potassium Persulphate.
Described non-ionic celluloses ether with temperature sensitive property refers to methyl cellulose ether.
The described Z 150PH polymerization degree is 2050.
The temperature of described freezing operation is-18 ℃.
Described microwave-assisted operation refers to Z 150PH and pregelatinized Starch soluble in water, puts into microwave reactor reaction 10 seconds again.