CN109498946A - A kind of high transparency medical face mask and effective PVC modified material and preparation method thereof - Google Patents
A kind of high transparency medical face mask and effective PVC modified material and preparation method thereof Download PDFInfo
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- CN109498946A CN109498946A CN201811527570.0A CN201811527570A CN109498946A CN 109498946 A CN109498946 A CN 109498946A CN 201811527570 A CN201811527570 A CN 201811527570A CN 109498946 A CN109498946 A CN 109498946A
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- slot
- face mask
- main body
- fixedly connected
- connector
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/06—Mouthpieces; Nose-clips
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Abstract
The invention discloses a kind of high transparency medical face masks, it is related to medical apparatus technical field, including transparent face mask main body, the transparent face mask main body is made of PVC modified material, the front upper portion two sides of transparent face mask main body offer notch, and tempering eyeglass is fixedly connected in notch.The invention also discloses a kind of effective PVC modified materials, including following raw material: Corvic, polytetrafluoroethylene (PTFE), calcium carbonate, high molecular foam material, polyvinyl alcohol, aluminum oxide, polymeric plasticizer, impact modifier, stabilizer, fire retardant and antioxidant.Transparent face mask main body is made of PVC modified material in the present invention, and the material good flame retardation effect, toughness is preferable, and shock resistance is excellent.
Description
Technical field
The present invention relates to medical apparatus technical field, in particular to a kind of high transparency medical face mask and the modified material of effective PVC
Material and preparation method thereof.
Background technique
Transparent medical face mask provides the side that the oxygen that breathing needs can be transferred to from storage tank human lung
Method, the types such as oxygen mask for mainly thering are medical oxygen mask, aviation oxygen mask and airline passengers to use at present, for controlling
Disease, protection passenger and pilot to be treated to play an important role safely, common oxygen mask is mainly by plastics, organosilicon,
Or rubber is made.
Polyvinyl chloride (PVC) is one of earliest industrialization, widely used general-purpose thermoplastic plastic, it have light weight,
The advantages that intensity height, insulation, fire-retardant, corrosion-resistant, high comprehensive performance, extensive cheap and raw material sources；But there is also
Following disadvantage: 1, poor toughness, easily embrittlement when being hit, therefore cannot act as structural material, in addition, the brittleness of polyvinyl chloride by
Temperature influence is very big, and general PVC product is~15 DEG C using lower limit, and flexible PVC is~30 DEG C using lower limit；2, thermostabilization
Property it is poor, begin to decomposite HCl at 100 DEG C, decompose rapider, and the melting temperature of PVC about 210 when being higher than 150 DEG C
℃；3, the viscosity of PVC is high, and mobility is very poor, limits its use to a certain extent.People are frequently with addition filler, bullet
The methods of property body, plasticizer, heat stabilizer, processing aid, heat-proof modifier and flow ability modifying agent improve the performance of PVC.But
The performance of existing PVC material is only capable of reaching domestic standard, limits its use to a certain extent.Therefore, one kind is invented
High transparency medical face mask and effective PVC modified material and preparation method thereof are necessary to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of high transparency medical face mask and effective PVC modified material and preparation method thereof,
To solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of high transparency medical face mask, including transparent face mask
Main body, the transparent face mask main body are made of PVC modified material, and the front upper portion two sides of the transparent face mask main body offer
Notch is fixedly connected with tempering eyeglass in the notch, and the positive Middle face of the transparent face mask main body is fixedly connected with nose cup, institute
The front end for stating nose cup is fixedly connected with connecting tube, and the connecting tube is fixedly connected with filter cartridge far from one end of nose cup, described
The side of the upper and lower ends of bright mask body is fixedly connected to the first connecting rope, the upper and lower ends of the transparent face mask main body
The other side is fixedly connected to the second connecting rope, and first connecting rope is fixedly connected with far from one end of transparent face mask main body
One connector, second connecting rope are fixedly connected with the second connector far from one end of transparent face mask main body, and described first connects
Offer slot in the middle part of one end of connector, the slot bottom of the slot is fixedly connected with magnet block, on the both ends side wall of the slot
Limiting slot is offered, through slot is offered on the side wall of the limiting slot, motion bar, the motion bar are provided in the through slot
One end protrusion through slot and be located at the first connector outside, and motion bar one end on the outside of be fitted and connected rubber bumps, institute
It states rubber bumps to be fixedly mounted on the lateral wall of the first connector, be fixedly connected in the middle part of one end of second connector slotting
Block, the inside of the inserted block are inlaid with magnetic metal block, and the two sides of the inserted block are provided with elastic plastic plate, the elasticity modeling
One end of flitch is fixedly mounted on the second connector, is fixedly connected with limited block on the outside of the other end of the elastic plastic plate,
The limited block is adapted with limiting slot.
Preferably, the side wall of the slot is set as skewed, and the slot bottom that the opening section of the slot is greater than slot is cut
Face, the inserted block are adapted with slot.
Preferably, the elastic plastic plate is set as skewed, and the spacing of two elastic plastic plates is less than slot notch
Length.
Preferably, the inserted block is fixedly connected with elastic connection layer, the elastic connection far from one end of the second connector
Layer is corresponding with the slot bottom of slot.
A kind of effective PVC modified material, is made by the raw material of following parts by weight: Corvic: 40~65 parts, poly- four
Vinyl fluoride: 10~14 parts, calcium carbonate: 1~3 part, high molecular foam material: 10~20 parts, polyvinyl alcohol: 8~15 parts, three oxidations
Two aluminium: 3~5 parts, polymeric plasticizer: 7~10 parts, impact modifier: 4~7 parts, stabilizer: 1~3 part, fire retardant: 3~5
Part and antioxidant: 1~2 part.
Preferably, the impact modifier is by hollow glass micropearl, glass fibre and diatomite with weight ratio 0.4:
The mixture of 0.8:1.2 composition.
Preferably, the fire retardant is made of triphenyl phosphate, zinc borate and ammonium polyphosphate with weight ratio 1.5:0.5:1
Mixture.
Preferably, the high molecular foam material is spray polyurethane foam.
A kind of preparation method of effective PVC modified material, including method in detail below:
Step 1: first by Corvic, polytetrafluoroethylene (PTFE), calcium carbonate, high molecular foam material, polyvinyl alcohol and
Aluminum oxide is weighed by corresponding mass fraction, and pulverizer is then added and crushes uniformly, then is poured into blender, stirring 15
~17min, obtains mixture；
Step 2: polymeric plasticizer, impact modifier, stabilizer, fire retardant will be added in resulting mixture and resist
Oxygen agent, is put into high speed blender, and 8~10min of high-speed stirred is uniformly mixed at 100~140 DEG C, obtains mixture after cooling
Material；
Step 3: said mixture material is added twin-screw extrude, and revolving speed is 80~120r/min, is extruded into and is made
Grain, obtains effective PVC modified material.
Preferably, in the step 3 double screw extruder extruder temperature are as follows: 145~156 DEG C of area's temperature, two area's temperature
Spend 132~148 DEG C, 133~155 DEG C of three area's temperature, 137~153 DEG CHe, tetra- area's temperature.
Technical effect and advantage of the invention:
1, the present invention in transparent face mask main body by being provided with the first connecting rope and the second connecting rope, in the first connecting rope
With the first connector and the second connector are respectively arranged in the second connecting rope, be provided with magnet in the slot on the first connector
Block is provided with magnetic metal block in the inserted block on the second connector, and magnetic metal block and magnet block cooperate, and enable inserted block fast
In the insertion slot of speed, it is provided with limiting slot in slot, limited block is provided in elastic plastic plate, so that limited block and limit
Position slot cooperation can limit the first connector and the second connector, enable mask to be stably fixed to the face of people, lead to
Crossing motion bar and rubber bumps can separate limited block with limiting slot, and mask is quickly taken off.
2, transparent face mask main body is made of PVC modified material in the present invention, PVC modified material good flame retardation effect, toughness
Preferably, shock resistance is excellent.
3, PVC modified material of the invention is by addition polytetrafluoroethylene (PTFE), so that material has good anti-corrosive properties and resistance to
Chemical corrosivity；Aluminum oxide and calcium carbonate are added, so that material has good heat-resisting and mechanical property；Add macromolecule
Foamed material passes through the rational proportion between each raw material, system so that material has the performances such as good heat preservation, heat-insulated and waterproof
The PVC modified material obtained has good comprehensive performance, the property of anti-corrosion, heat-insulated, waterproof, resistant to chemical etching and fire resisting etc.
It can be made with good popularization and application foreground.
Detailed description of the invention
Fig. 1 is the schematic elevation view of structure of the invention.
Fig. 2 is the schematic side view of structure of the invention.
Fig. 3 is the diagrammatic cross-section that the present invention first connects header structure.
Fig. 4 is the diagrammatic cross-section that the present invention second connects header structure.
In figure: 1, transparent face mask main body；2, tempering eyeglass；3, nose cup；4, connecting tube；5, filter cartridge；6, the first connecting rope；
7, the second connecting rope；8, the first connector；9, the second connector；10, slot；11, magnet block；12, limiting slot；13, through slot；
14, motion bar；15, rubber bumps；16, inserted block；17, magnetic metal block；18, elastic connection layer；19, elastic plastic plate；20, it limits
Position block.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
The present invention provides a kind of high transparency medical face mask as shown in figures 1-4, including transparent face mask main body 1, transparent sides
Cover main body 1 is made of PVC modified material, and the front upper portion two sides of transparent face mask main body 1 offer notch, fixed company in notch
It is connected to tempering eyeglass 2, the positive Middle face of transparent face mask main body 1 is fixedly connected with nose cup 3, and the front end of nose cup 3 is fixedly connected with company
Adapter tube 4, connecting tube 4 are fixedly connected with filter cartridge 5 far from one end of nose cup 3, and the side of the upper and lower ends of transparent face mask main body 1 is equal
It is fixedly connected with the first connecting rope 6, the other side of the upper and lower ends of transparent face mask main body 1 is fixedly connected to the second connecting rope 7,
First connecting rope 6 is fixedly connected with the first connector 8 far from one end of transparent face mask main body 1, and the second connecting rope 7 is far from transparent side
One end of cover main body 1 is fixedly connected with the second connector 9, offers slot 10 in the middle part of one end of the first connector 8, slot 10
Slot bottom is fixedly connected with magnet block 11, and limiting slot 12 is offered on the both ends side wall of slot 10, is opened on the side wall of limiting slot 12
Equipped with through slot 13, motion bar 14 is provided in through slot 13, one end protrusion through slot 13 of motion bar 14 is simultaneously located at the first connector 8
Outside, and rubber bumps 15 have been fitted and connected on the outside of one end of motion bar 14, rubber bumps 15 are fixedly mounted on the first connector 8
Lateral wall on, limited block 20 can be separated with limiting slot 12 by motion bar 14 and rubber bumps 15, so that transparent face mask
Main body 1 can quickly be taken off, and be fixedly connected with inserted block 16 in the middle part of one end of the second connector 9, the inside of inserted block 16 is inlayed
Be magnetic metal block 17, and magnetic metal block 17 and magnet block 11 cooperate, and inserted block 16 is quickly inserted into slot 10, inserts
The two sides of block 16 are provided with elastic plastic plate 19, and one end of elastic plastic plate 19 is fixedly mounted on the second connector 9, elasticity
It is fixedly connected with limited block 20 on the outside of the other end of plastic plate 19, limited block 20 is adapted with limiting slot 12, can be connected first
Connector 8 and the limit of the second connector 9, enable transparent face mask main body 1 to be stably fixed to the face of people.
Further, in the above scheme, the side wall of slot 10 is set as skewed, and the opening section of slot 10, which is greater than, to be inserted
The slot bottom section of slot 10, enables inserted block 16 to be quickly inserted into slot 10, and inserted block 16 is adapted with slot 10.
Further, in the above scheme, elastic plastic plate 19 is set as skewed, the spacing of two elastic plastic plates 19
Less than the length of 10 notch of slot, so that elastic plastic plate 19 is inserted into slot 10.
Further, in the above scheme, inserted block 16 is fixedly connected with elastic connection layer far from one end of the second connector 9
18, elastic connection layer 18 is corresponding with the slot bottom of slot 10, and the inserted block 16 that is set as of elastic connection layer 18 provides certain delay
Punching effect.
Embodiment 2
The present invention also provides a kind of effective PVC modified materials, are made by the raw material of following parts by weight: polyvinyl chloride tree
Rouge: 40 parts, polytetrafluoroethylene (PTFE): 10 parts, calcium carbonate: 1 part, high molecular foam material: 10 parts, polyvinyl alcohol: 8 parts, three oxidations two
Aluminium: 3 parts, polymeric plasticizer: 7 parts, impact modifier: 4 parts, stabilizer: 1 part, fire retardant: 3 parts and antioxidant: 1 part.
Further, in the above scheme, impact modifier is by hollow glass micropearl, glass fibre and diatomite with weight
Measure the mixture formed than 0.4:0.8:1.2.
Further, in the above scheme, fire retardant is by triphenyl phosphate, zinc borate and ammonium polyphosphate with weight ratio
1.5:0.5:1 the mixture of composition.
Further, in the above scheme, high molecular foam material is spray polyurethane foam.
The present invention also provides a kind of preparation methods of effective PVC modified material, including method in detail below:
Step 1: first by Corvic, polytetrafluoroethylene (PTFE), calcium carbonate, high molecular foam material, polyvinyl alcohol and
Aluminum oxide is weighed by corresponding mass fraction, and pulverizer is then added and crushes uniformly, then is poured into blender, stirs
15min obtains mixture；
Step 2: polymeric plasticizer, impact modifier, stabilizer, fire retardant will be added in resulting mixture and resist
Oxygen agent, is put into high speed blender, and high-speed stirred 8min is uniformly mixed at 100 DEG C, obtains mixed material after cooling；
Step 3: said mixture material is added twin-screw extrude, and revolving speed 80r/min is extruded into granulation, obtains
Effective PVC modified material.
Further, in the above scheme, in step 3 double screw extruder extruder temperature are as follows: 153 DEG C of area's temperature,
Two 138 DEG C of area's temperature, 144 DEG C of three area's temperature, 146 DEG CHe, tetra- area's temperature.
Embodiment 3
The present invention also provides a kind of effective PVC modified materials, are made by the raw material of following parts by weight: polyvinyl chloride tree
Rouge: 65 parts, polytetrafluoroethylene (PTFE): 14 parts, calcium carbonate: 3 parts, high molecular foam material: 20 parts, polyvinyl alcohol: 15 parts, three oxidations two
Aluminium: 5 parts, polymeric plasticizer: 10 parts, impact modifier: 7 parts, stabilizer: 3 parts, fire retardant: 5 parts and antioxidant: 2 parts.
Further, in the above scheme, impact modifier is by hollow glass micropearl, glass fibre and diatomite with weight
Measure the mixture formed than 0.4:0.8:1.2.
Further, in the above scheme, fire retardant is by triphenyl phosphate, zinc borate and ammonium polyphosphate with weight ratio
1.5:0.5:1 the mixture of composition.
Further, in the above scheme, high molecular foam material is spray polyurethane foam.
The present invention also provides a kind of preparation methods of effective PVC modified material, including method in detail below:
Step 1: first by Corvic, polytetrafluoroethylene (PTFE), calcium carbonate, high molecular foam material, polyvinyl alcohol and
Aluminum oxide is weighed by corresponding mass fraction, and pulverizer is then added and crushes uniformly, then is poured into blender, stirs
17min obtains mixture；
Step 2: polymeric plasticizer, impact modifier, stabilizer, fire retardant will be added in resulting mixture and resist
Oxygen agent, is put into high speed blender, and high-speed stirred 10min is uniformly mixed at 140 DEG C, obtains mixed material after cooling；
Step 3: said mixture material is added twin-screw extrude, and revolving speed 120r/min is extruded into granulation, obtains
To effective PVC modified material.
Further, in the above scheme, in step 3 double screw extruder extruder temperature are as follows: 153 DEG C of area's temperature,
Two 138 DEG C of area's temperature, 144 DEG C of three area's temperature, 146 DEG CHe, tetra- area's temperature.
Embodiment 4
The present invention also provides a kind of effective PVC modified materials, are made by the raw material of following parts by weight: polyvinyl chloride tree
Rouge: 55 parts, polytetrafluoroethylene (PTFE): 12 parts, calcium carbonate: 2 parts, high molecular foam material: 15 parts, polyvinyl alcohol: 12 parts, three oxidations two
Aluminium: 4 parts, polymeric plasticizer: 8 parts, impact modifier: 5 parts, stabilizer: 2 parts, fire retardant: 4 parts and antioxidant: 2 parts.
Further, in the above scheme, impact modifier is by hollow glass micropearl, glass fibre and diatomite with weight
Measure the mixture formed than 0.4:0.8:1.2.
Further, in the above scheme, fire retardant is by triphenyl phosphate, zinc borate and ammonium polyphosphate with weight ratio
1.5:0.5:1 the mixture of composition.
Further, in the above scheme, high molecular foam material is spray polyurethane foam.
The present invention also provides a kind of preparation methods of effective PVC modified material, including method in detail below:
Step 1: first by Corvic, polytetrafluoroethylene (PTFE), calcium carbonate, high molecular foam material, polyvinyl alcohol and
Aluminum oxide is weighed by corresponding mass fraction, and pulverizer is then added and crushes uniformly, then is poured into blender, stirs
16min obtains mixture；
Step 2: polymeric plasticizer, impact modifier, stabilizer, fire retardant will be added in resulting mixture and resist
Oxygen agent, is put into high speed blender, and high-speed stirred 9min is uniformly mixed at 120 DEG C, obtains mixed material after cooling；
Step 3: said mixture material is added twin-screw extrude, and revolving speed 100r/min is extruded into granulation, obtains
To effective PVC modified material.
Further, in the above scheme, in step 3 double screw extruder extruder temperature are as follows: 153 DEG C of area's temperature,
Two 138 DEG C of area's temperature, 144 DEG C of three area's temperature, 146 DEG CHe, tetra- area's temperature.
Comparative example 1
For the embodiment that compares 4, lack high molecular foam material.
Comparative example 2
For the embodiment that compares 4, lack impact modifier.
Comparative example 3
For the embodiment that compares 4, lack aluminum oxide and calcium carbonate.
Test case 1
Effective PVC modified material prepared by the embodiment of the present invention 2~4 and comparative example 1~4 is tested for the property, as a result
It is shown in Table 1.
Table 1
As seen from the above table, the effective PVC modified material that prepared by the embodiment of the present invention 2~4 has preferable comprehensive performance: leading
Hot coefficient is low (0.042~0.047W/m ﹒ k), good heat preservation performance；Permeable pressure ratio is high (520~550%), good waterproof performance；Anti-flammability
Good (V~0)；Excellent in mechanical performance, tensile strength height (63.2~65.1MPa), elongation at break height (175~180%), anti-impact
Big (12.3~the 12.6kJ/m of intensity3).It is found by comparative test, by adding high molecular foam material, so that material has
Good thermal insulation property considerably reduces the thermal coefficient of material；By addition aluminum oxide and calcium carbonate, so that material
Heat insulating ability and anti-flammability be improved, mechanical property improve；By adding impact modifier, hence it is evident that improve the mechanics of material
Performance.
Compared with prior art, the present invention in transparent face mask main body by being provided with the first connecting rope and the second connection
Rope, is respectively arranged with the first connector and the second connector in the first connecting rope and the second connecting rope, on the first connector
It is provided with magnet block in slot, magnetic metal block is provided in the inserted block on the second connector, magnetic metal block is matched with magnet block
It closes, inserted block is quickly inserted into slot, limiting slot is provided in slot, limit is provided in elastic plastic plate
Block enables mask stable so that limited block and limiting slot cooperation can limit the first connector and the second connector
It is fixed on the face of people, limited block can be separated by motion bar and rubber bumps with limiting slot, enable mask quick
Take off.
Transparent face mask main body is made of PVC modified material in the present invention, PVC modified material good flame retardation effect, toughness compared with
Good, shock resistance is excellent.PVC modified material of the invention is by addition polytetrafluoroethylene (PTFE), so that material is with good anti-
Corruption and chemical corrosion resistance；Aluminum oxide and calcium carbonate are added, so that material has good heat-resisting and mechanical property；Add
Add high molecular foam material, so that material has the performances such as good heat preservation, heat-insulated and waterproof；Impact modifier is added, is made
Obtaining material has good impact resistance；By the rational proportion between each raw material, PVC modified material obtained has good
The performance of comprehensive performance, anti-corrosion, heat-insulated, waterproof, anti-impact, resistant to chemical etching and fire resisting etc. pushes away it with good
Wide application prospect.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (10)
1. a kind of high transparency medical face mask, including transparent face mask main body (1), the transparent face mask main body (1) is by PVC modified material
It is made, it is characterised in that: the front upper portion two sides of the transparent face mask main body (1) offer notch, fix in the notch
It is connected with tempering eyeglass (2), the positive Middle face of the transparent face mask main body (1) is fixedly connected with nose cup (3), the nose cup (3)
Front end be fixedly connected with connecting tube (4), the connecting tube (4) is fixedly connected with filter cartridge (5) far from the one end of nose cup (3),
The side of the upper and lower ends of the transparent face mask main body (1) is fixedly connected to the first connecting rope (6), the transparent face mask main body
(1) other side of upper and lower ends is fixedly connected to the second connecting rope (7), and first connecting rope (6) is far from transparent face mask
One end of main body (1) is fixedly connected with the first connector (8), and the one of second connecting rope (7) separate transparent face mask main body (1)
End is fixedly connected with the second connector (9), offers slot (10), the slot in the middle part of one end of first connector (8)
(10) slot bottom is fixedly connected with magnet block (11), offers limiting slot (12), institute on the both ends side wall of the slot (10)
It states and is offered on the side wall of limiting slot (12) through slot (13), be provided with motion bar (14), the motion bar in the through slot (13)
(14) one end protrusion through slot (13) and the outside positioned at the first connector (8), and fitting connects on the outside of one end of motion bar (14)
It is connected to rubber bumps (15), the rubber bumps (15) are fixedly mounted on the lateral wall of the first connector (8), and described second connects
It is fixedly connected with inserted block (16) in the middle part of one end of connector (9), the inside of the inserted block (16) is inlaid with magnetic metal block (17), institute
The two sides for stating inserted block (16) are provided with elastic plastic plate (19), and one end of the elastic plastic plate (19) is fixedly mounted on second
On connector (9), it is fixedly connected with limited block (20) on the outside of the other end of the elastic plastic plate (19), the limited block (20)
It is adapted with limiting slot (12).
2. a kind of high transparency medical face mask according to claim 1, it is characterised in that: the side wall of the slot (10) is arranged
To be skewed, the opening section of the slot (10) is greater than the slot bottom section of slot (10), the inserted block (16) and slot (10)
It is adapted.
3. a kind of high transparency medical face mask according to claim 1, it is characterised in that: elastic plastic plate (19) setting
To be skewed, the spacing of two elastic plastic plates (19) is less than the length of slot (10) notch.
4. a kind of high transparency medical face mask according to claim 1, it is characterised in that: the inserted block (16) connects far from second
One end of connector (9) is fixedly connected with elastic connection layer (18), and the elastic connection layer (18) is opposite with the slot bottom of slot (10)
It answers.
5. a kind of effective PVC modified material, which is characterized in that be made by the raw material of following parts by weight: Corvic: 40~
65 parts, polytetrafluoroethylene (PTFE): 10~14 parts, calcium carbonate: 1~3 part, high molecular foam material: 10~20 parts, polyvinyl alcohol: 8~15
Part, aluminum oxide: 3~5 parts, polymeric plasticizer: 7~10 parts, impact modifier: 4~7 parts, stabilizer: 1~3 part, resistance
Fire agent: 3~5 parts and antioxidant: 1~2 part.
6. a kind of effective PVC modified material according to claim 5, it is characterised in that: the impact modifier is by sky
The mixture that heart glass microballoon, glass fibre and diatomite are formed with weight ratio 0.4:0.8:1.2.
7. a kind of effective PVC modified material according to claim 5, it is characterised in that: the fire retardant is by tricresyl phosphate
The mixture that phenyl ester, zinc borate and ammonium polyphosphate are formed with weight ratio 1.5:0.5:1.
8. according to a kind of effective PVC modified material described in claim 5, it is characterised in that: the high molecular foam material is poly-
Urethane hard bubble body.
9. a kind of preparation method of effective PVC modified material, which is characterized in that including method in detail below:
Step 1: first by Corvic, polytetrafluoroethylene (PTFE), calcium carbonate, high molecular foam material, polyvinyl alcohol and three oxygen
Change two aluminium to weigh by corresponding mass fraction, pulverizer is then added and crushes uniformly, then is poured into blender, stirring 15~
17min obtains mixture；
Step 2: will be added polymeric plasticizer, impact modifier, stabilizer, fire retardant and antioxidant in resulting mixture,
It is put into high speed blender, 8~10min of high-speed stirred is uniformly mixed at 100~140 DEG C, obtains mixed material after cooling；
Step 3: said mixture material is added twin-screw extrude, and revolving speed is 80~120r/min, is extruded into granulation, is obtained
To effective PVC modified material.
10. a kind of preparation method of effective PVC modified material according to claim 9, it is characterised in that: the step 3
The extruder temperature of middle double screw extruder are as follows: 145~156 DEG C of area's temperature, 132~148 DEG C of two area's temperature, three area's temperature 137
133~155 DEG C of tetra- area's temperature of~153 DEG CHe.
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|---|---|---|---|---|
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