CN103232665B - Konjac keyboard film and preparation method thereof - Google Patents
Konjac keyboard film and preparation method thereof Download PDFInfo
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- CN103232665B CN103232665B CN201310166551.0A CN201310166551A CN103232665B CN 103232665 B CN103232665 B CN 103232665B CN 201310166551 A CN201310166551 A CN 201310166551A CN 103232665 B CN103232665 B CN 103232665B
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Abstract
The invention relates to a konjac keyboard film and a preparation method thereof. The preparation method of the konjac keyboard film comprises the steps of preparing gel, degassing, preparing a glue material and performing vulcanization molding. According to the konjac keyboard film, konjac glucomannan is taken as a carrier and other assistants are supplemented, so that the konjac keyboard film has excellent gel property, antibacterial property and processability, is high in transparency, good in elasticity and strong in flexibility and is not easily broken. Compared with a traditional keyboard film, the konjac keyboard film has functions of oil resistance, water resistance and mold resistance, and production materials are environment-friendly. The safety and usability of the konjac keyboard film completely comply with relevant state standards, and the konjac keyboard film has the advantages of low production cost, less environment pollution and no damage to human bodies and accords with modern consumption concepts and market requirements.
Description
Technical field
The present invention relates to a kind of keyboard membrane and preparation method thereof, be specifically related to a kind of konjaku keyboard membrane and preparation method thereof.
Background technology
Oneself spreads to huge numbers of families the use of notebook computer, particularly student enrollment and working people.But due to people's life-time service, keyboard can grow many bacteriums, and surface there will be many spots, sometimes also there will be many cuts etc., not only affect normal running and the life-span of computer, also affect people's phychology and health.So keyboard of notebook computer film has arisen at the historic moment.But the manufacturer of existing keyboard membrane generally only focuses on cost, and has selected cheap material or even toxic materials, also ignore the comfortableness of feel etc. simultaneously.Therefore, existing keyboard membrane need further to improve and innovation, could adapt to the needs in market.
Application number is that this invention of patent of invention " keyboard film for radiating " (applying date: 2011.01.14) of 201120000434.3 aims to provide a kind of keyboard membrane with air heat sinking function, can under hot conditions, be the heat radiation of keyboard of notebook computer position.It comprises keyboard membrane cover, air hose, radiator fan, described keyboard membrane cover is connected by vent-pipe with radiator fan, described keyboard membrane shroud rim is manufactured with vacuum pad, described vacuum pad can be fixed on keyboard membrane cover on notebook computer, described radiator fan is with wind-collecting cover, air is imported to air hose, and the power supply of described radiator fan is provided by notebook computer by USB wire.But hand may cause with contacting of keyboard membrane the problem that wind-force is not enough or draw badly.In addition, increased a radiator fan, can increase kwh loss, and taken a USB interface and may affect operation.Importantly this invention structure is so complicated, and price should be very than general keyboard membrane expensive several times or even tens times.
Application number is a kind of aerating keyboard membrane of patent of invention " a kind of aerating keyboard membrane " (applying date: 2011.04.11) of 201120097090.2, comprise keyboard membrane, the key position of the corresponding keyboard of keyboard membrane is pressed with projection, described keyboard membrane is formed in surrounding sealing by two soft film, the intermembranous gas cloud that accompanies of described two soft, arbitrary angle place at the described soft film that is positioned at upper strata is provided with pore, on described pore, is plugged with plug.The utility model is simple in structure, by the keyboard membrane of existing single layer structure being improved to the bilayer structure with pneumatic structure, thereby when cleaning, keyboard membrane is bulged make the clearance distance between projection to increase by be filled with air in keyboard membrane, foreign material and dust are dropped out, simultaneously easy cleaning.But this product is had relatively high expectations to retractility.And bilayer structure may affect feel.
Application number is that this invention of patent of invention " keyboard membrane " (date of application: 2010.05.06) of 201010182163.8 provides a kind of keyboard membrane, it is characterized in that, described keyboard membrane comprises: an elastica, and it is in order to be covered on the surface of keyboard; Some mounting blocks, it is in order to be stable in described elastica on the surface of described keyboard; Some web members, each described web member is in order to connect a mounting block of described elastica and described some mounting blocks.The present invention passes through to adopt elastica and mounting block, thereby keyboard membrane stably can be fixed on the surface of keyboard of different sizes.But this product function is single, can not play effective protective effect.
Summary of the invention
The object of this invention is to provide a kind of konjaku keyboard membrane and preparation method thereof.Utilize gelation, the germ resistance of Rhizoma amorphophalli glucomannan and be aided with other raw materials, as softening agent (glycerine), synergistic agent (chitosan, sodium alginate), anti-aging agent (DOD), vulcanization accelerator (stearic acid, sulphur, Vulcanization accelerator TMTD) are made soft antibacterial keyboard membrane.
The preparation method of konjaku keyboard membrane of the present invention, is characterized in that operation steps is as follows:
(1) coagulant liquid preparation: toward being equipped with in the there-necked flask of purifying konjaku powder, multiple adds after 95-105 water doubly by weight, puts there-necked flask in water bath with thermostatic control, and described there-necked flask is equipped with agitator and condenser, be heated to while stirring 45 DEG C with agitator 150r/min, be incubated and continue to stir and be no less than 2h, then filter, in adding the persulfate aqueous solution of initiator 1.5mol/mL with the weight percent of the filtrate ratio that is 0.10%-0.12%, 150r/min stirs 10 min, then in adding the monomer acrylic acid aqueous solution of 1.2mol/mL with the weight percent of the filtrate ratio that is 0.075%-0.225%, and by with the weight percent of water be 0.7%-0.9%, 0.1%-0.3% and 3%-5%, add respectively paraffin, glycerine and synergistic agent, be stirred to whole dissolvings, acquisition coagulant liquid is for subsequent use, described synergistic agent is chitosan or sodium alginate, described purifying konjaku powder refers to that the gross weight that granularity heavily accounts for konjaku powder at the particle of 0.125～0.425mm is not less than 90%,
(2) degassed: the coagulant liquid in step (1) is placed in to the centrifugal degassed 15-25min of whizzer 3000r/min, obtains Rhizoma amorphophalli glucomannan mixed gel liquid, for subsequent use;
(3) prepare sizing material: the Rhizoma amorphophalli glucomannan mixed gel liquid of step (2) is injected to internal rubber mixer and prepare sizing material, then by being 1%, 5%, 0.5% and 2% to inject respectively small powder antioxidant DOD, stearic acid, Vulcanization accelerator TMTD and zinc carbonate with the weight percent of Rhizoma amorphophalli glucomannan mixed gel liquid, mixing 1.5min, again by being 30% to add carbon black with the weight percent of Rhizoma amorphophalli glucomannan mixed gel liquid, mixing 3min, makes sizing material; The model of described internal rubber mixer: XH-420, by specification uses;
(4) molding sulfuration: use vulcanizing press sulfidization molding.The model of described vulcanizing press: QLB25, by specification uses.
The present invention also protects the konjaku keyboard membrane of preparing with aforesaid method.
Konjaku keyboard membrane of the present invention, taking Rhizoma amorphophalli glucomannan as carrier and be aided with other auxiliary agents, have that good gelation, germ resistance, processing characteristics and transparency are high, good springiness, snappiness by force, easy fracture not.Compared with traditional keyboard membrane, there is effect of oil resistant, water-fast, resistance to mould, and produce material environment friendly.Security and use properties meet relative national standards requirement completely, taking Rhizoma amorphophalli glucomannan as main raw, have production cost low, low in the pollution of the environment, to advantages such as human body do not injure, meet modern consumption concept and the market requirement.
Konjaku keyboard membrane of the present invention and common keyboard film properties comparative result are as shown in table 1.
Table 1 konjaku contact lens of the present invention and common soft contact lens performance comparison result
Note: the testing method of table 1 performance index is as follows:
(1) transparency: respectively two kinds of keyboard membranes are immersed in distilled water and soak 24h, reach after water suction balance, blot surface-moisture with filter paper, taking distilled water as reference, measure the average transmittance of material with 721 type spectrophotometers under 450nm～700nm.
(2) germ resistance: the bacterium and the mould that supply examination in conjunction with the Standard Selection of QB/T 2591-2003.
(3) tensile strength: measure two kinds of keyboard membrane tensile strength with electronic tensile machine under 32 DEG C of room temperatures, 500nm/min condition.
(4) anti-fold: rub and fold random in hand two kinds of keyboard membranes.
(5) adhesivity: two kinds of keyboard membranes are placed on respectively on same keyboard of notebook computer, tilt until perpendicular to the ground gradually.
(6) anti-high temp effect: with a jiao of two kinds of keyboard membranes of lighter difference calcination, observe and smolder and deformation.
The result of contrast test shows, by konjaku keyboard membrane properties excellence of the present invention, its index all exceedes commercially available common keyboard film, alternative existing keyboard membrane.
Embodiment
Below in conjunction with embodiment, the present invention is further elaborated.
Embodiment 1: a kind of preparation method of konjaku keyboard membrane
A preparation method for konjaku keyboard membrane, is characterized in that comprising the following steps:
(1) coagulant liquid preparation: toward being equipped with in the there-necked flask of purifying konjaku powder, multiple adds after the water of 100 times by weight, put there-necked flask in water bath with thermostatic control, be heated to while stirring 45 DEG C with agitator 150r/min, be incubated and continue stir 2h, then use filter paper filtering 2 times, in adding the aqueous solution of the Potassium Persulphate of initiator 1.5mol/mL with the weight percent of the filtrate ratio that is 0.11%, 150r/min stirs 10 min, then in adding the monomer acrylic acid aqueous solution of 1.2mol/mL with the weight percent of the filtrate ratio that is 0.15%, and by with the weight percent of water be 0.8%, 0.2% and 4%, add respectively paraffin, glycerine and synergistic agent, be stirred to whole dissolvings, obtain coagulant liquid for subsequent use,
(2) degassed: the coagulant liquid in step (1) is placed in to the centrifugal degassed 20min of whizzer 3000r/min, obtains Rhizoma amorphophalli glucomannan mixed gel liquid, for subsequent use;
(3) prepare sizing material: the Rhizoma amorphophalli glucomannan mixed gel liquid of step (2) is injected to internal rubber mixer and prepare sizing material, then by being 1%, 5%, 0.5% and 2% to inject respectively small powder antioxidant DOD, stearic acid, Vulcanization accelerator TMTD and zinc carbonate with the weight percent of Rhizoma amorphophalli glucomannan mixed gel liquid, mixing 1.5min, again by being 30% to add carbon black, mixing 3min with the weight percent of Rhizoma amorphophalli glucomannan mixed gel liquid;
(4) molding sulfuration: use vulcanizing press sulfidization molding.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (3)
1. a preparation method for konjaku keyboard membrane, is characterized in that operation steps is as follows:
(1) coagulant liquid preparation: toward being equipped with in the there-necked flask of purifying konjaku powder, multiple adds after 95-105 water doubly by weight, puts there-necked flask in water bath with thermostatic control, and described there-necked flask is equipped with agitator and condenser, be heated to while stirring 45 DEG C with agitator 150r/min, be incubated and continue to stir and be no less than 2h, then filter, in adding the persulfate aqueous solution of initiator 1.5mol/mL with the weight percent of the filtrate ratio that is 0.10%-0.12%, 150r/min stirs 10 min, then in adding the monomer acrylic acid aqueous solution of 1.2mol/mL with the weight percent of the filtrate ratio that is 0.075%-0.225%, and by with the weight percent of water be 0.7%-0.9%, 0.1%-0.3% and 3%-5%, add respectively paraffin, glycerine and synergistic agent, be stirred to whole dissolvings, acquisition coagulant liquid is for subsequent use, described synergistic agent is chitosan or sodium alginate, described purifying konjaku powder refers to that the gross weight that granularity heavily accounts for konjaku powder at the particle of 0.125～0.425mm is not less than 90%,
(2) degassed: the coagulant liquid in step (1) is placed in to the centrifugal degassed 15-25min of whizzer 3000r/min, obtains Rhizoma amorphophalli glucomannan mixed gel liquid, for subsequent use;
(3) prepare sizing material: the Rhizoma amorphophalli glucomannan mixed gel liquid of step (2) is injected to internal rubber mixer and prepare sizing material, then by being 1%, 5%, 0.5% and 2% to inject respectively small powder antioxidant DOD, stearic acid, Vulcanization accelerator TMTD and zinc carbonate with the weight percent of Rhizoma amorphophalli glucomannan mixed gel liquid, mixing 1.5min, again by being 30% to add carbon black with the weight percent of Rhizoma amorphophalli glucomannan mixed gel liquid, mixing 3min, makes sizing material;
(4) molding sulfuration: use vulcanizing press sulfidization molding.
2. the preparation method of a kind of konjaku keyboard membrane according to claim 1, is characterized in that operation steps is as follows:
(1) coagulant liquid preparation: toward being equipped with in the there-necked flask of purifying konjaku powder, multiple adds after the water of 100 times by weight, put there-necked flask in water bath with thermostatic control, be heated to while stirring 45 DEG C with agitator 150r/min, be incubated and continue stir 2h, then use filter paper filtering 2 times, in adding the aqueous solution of the Potassium Persulphate of initiator 1.5mol/mL with the weight percent of the filtrate ratio that is 0.11%, 150r/min stirs 10 min, then in adding the monomer acrylic acid aqueous solution of 1.2mol/mL with the weight percent of the filtrate ratio that is 0.15%, and by with the weight percent of water be 0.8%, 0.2% and 4%, add respectively paraffin, glycerine and synergistic agent, be stirred to whole dissolvings, obtain coagulant liquid for subsequent use,
(2) degassed: the coagulant liquid in step (1) is placed in to the centrifugal degassed 20min of whizzer 3000r/min, obtains Rhizoma amorphophalli glucomannan mixed gel liquid, for subsequent use;
(3) prepare sizing material: the Rhizoma amorphophalli glucomannan mixed gel liquid of step (2) is injected to internal rubber mixer and prepare sizing material, then by being 1%, 5%, 0.5% and 2% to inject respectively small powder antioxidant DOD, stearic acid, Vulcanization accelerator TMTD and zinc carbonate with the weight percent of Rhizoma amorphophalli glucomannan mixed gel liquid, mixing 1.5min, again by being 30% to add carbon black, mixing 3min with the weight percent of Rhizoma amorphophalli glucomannan mixed gel liquid;
(4) molding sulfuration: use vulcanizing press sulfidization molding.
3. the konjaku keyboard membrane of being prepared by the method for claim 1 or 2.
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| CN201310166551.0A CN103232665B (en) | 2013-05-08 | 2013-05-08 | Konjac keyboard film and preparation method thereof |
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| CN201310166551.0A CN103232665B (en) | 2013-05-08 | 2013-05-08 | Konjac keyboard film and preparation method thereof |
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| CN103232665B true CN103232665B (en) | 2014-12-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786380B (en) * | 2014-01-10 | 2015-07-08 | 福建农林大学 | Automobile konjac adhesive film and preparation method thereof |
| CN103788392B (en) * | 2014-01-10 | 2015-12-02 | 福建农林大学 | Lampblack absorber dustproof membrane and preparation method thereof |
| CN103819755B (en) * | 2014-03-10 | 2016-02-03 | 中山火炬职业技术学院 | A kind of modified konjac glucomannan composite membrane and preparation method thereof |
| CN104760372A (en) * | 2014-12-29 | 2015-07-08 | 安徽顺彤包装材料有限公司 | Lucifugal preservative film |
| CN104961926A (en) * | 2015-07-03 | 2015-10-07 | 福建农林大学 | Konjac glucomannan bath mat and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497731A (en) * | 2008-01-28 | 2009-08-05 | 西南科技大学 | Environment degrading thermoplastic glucomanan film and preparation thereof |
| CN102937841A (en) * | 2012-11-20 | 2013-02-20 | 福建农林大学 | Sweat-absorbent antifouling film-sprayed mouse and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497731A (en) * | 2008-01-28 | 2009-08-05 | 西南科技大学 | Environment degrading thermoplastic glucomanan film and preparation thereof |
| CN102937841A (en) * | 2012-11-20 | 2013-02-20 | 福建农林大学 | Sweat-absorbent antifouling film-sprayed mouse and preparation method thereof |
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Granted publication date: 20141210 Termination date: 20190508 |