CN105131473A - Preparation method of high temperature resistant medical deodorization material - Google Patents
Preparation method of high temperature resistant medical deodorization material Download PDFInfo
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- CN105131473A CN105131473A CN201510614089.5A CN201510614089A CN105131473A CN 105131473 A CN105131473 A CN 105131473A CN 201510614089 A CN201510614089 A CN 201510614089A CN 105131473 A CN105131473 A CN 105131473A
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- high temperature
- temperature resistant
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- resistant medical
- deodoring materials
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Abstract
The invention discloses a preparation method of a high temperature resistant medical deodorization material. The preparation method comprises the steps of firstly adding PVC, PET, dioctyl phthalate, lecithin, polycarbonate and barium stearate into a mixer, stirring and mixing uniformly, then adding the mixture into a reaction still, adding fiberglass, 3a-methyl-5,6-dihydro-4H-isobenzofuran-1,3-dione, aluminium oxide, polyester fiber and potassium 3-sulphonatopropyl acrylate, heating and stirring under a negative pressure condition, then performing temperature rise reaction under a normal pressure condition, then cooling to 0 DEG C, then drying, smashing, stifling by using ammonia gas, and then performing extrusion molding in a twin-screw extruder, thus obtaining the high temperature resistant medical deodorization material. The high temperature resistant medical deodorization material prepared by the preparation method provided by the invention has good high temperature resistance and deodorization performance, thus further expanding the application of the material.
Description
Technical field
The invention belongs to medical material field, particularly a kind of preparation method of high temperature resistant medical deodoring materials.
Background technology
Polyvinyl chloride, English abbreviation PVC is the thermoplastic resin be polymerized under initiator effect by vinylchlorid.It is the homopolymer of vinylchlorid.Ryuron and vinyl chloride copolymer system are referred to as vinyl chloride resin.PVC is the white powder of amorphous structure, and the degree of branching is less.Industrial PVC molecular weight generally, in 50,000 ~ 120,000 scopes, has larger polymolecularity, the reduction of molecular weight with polymerisation temperature and increasing; Without definite melting point, 80 ~ 85 DEG C start to soften, and 130 DEG C become viscoelastic state, and 160 ~ 180 DEG C start to change viscous state into; There is good mechanical property, about tensile strength 60MPa, shock strength 5 ~ 10kJ/m
2; There are excellent dielectric properties.But to the poor stability of light and heat, more than 100 DEG C or through long-time exposure in sunshine, will decompose and produce hydrogenchloride, and autocatalytically is decomposed further, cause variable color, physical and mechanical properties also declines rapidly, must add stablizer in actual applications to improve the stability to light and heat.In the medical field, due to the singularity of environment for use, therefore for PVC material, there are more many-sided application needs, as the high thermal resistance of material, deodorization etc., and at present conventional PVC material can not reach and well applies stability in hot environment, deodoriging properties also seldom relates to simultaneously, this just needs the matrix material developing one kind of multiple properties, meets the needs of medical field.
Summary of the invention
The object of the invention is to the preparation method that a kind of high temperature resistant medical deodoring materials is provided to overcome above the deficiencies in the prior art,
The present invention is achieved through the following technical solutions:
A preparation method for high temperature resistant medical deodoring materials, comprises following preparation process:
Step one, by with PVC10-20 part of parts by weight, PET2-6 part, dioctyl phthalate (DOP) 1-4 part, Yelkin TTS 0.8-1.5 part, polycarbonate 3-8 part and barium stearate 1-3 part join in mixing and blending machine and are uniformly mixed, and obtain material one;
Step 2, material one is joined in reactor, add the glass fibre 1-3 part with parts by weight, methyl tetrahydrophthalic anhydride 0.8-1.5 part, aluminum oxide 1-4 part, trevira 2-5 part, 3-third-2-alkene acyloxy propane-1-potassium sulfonate 0.5-1 part, under condition of negative pressure, be heated to 60-70 DEG C, stir 2-4 hour, be then warming up to 90-100 DEG C in atmospheric conditions, stir 30-50 minute, be down to 0 DEG C with the cooling rate of 20-25 DEG C/min, and keep 10-20 minute under 0 DEG C of condition, obtain material two;
Step 3, dries material two, pulverizes, obtains material three;
Step 4, uses ammonia to fumigate material three, obtains material four;
Step 5, by material four by extrusion moulding in twin screw extruder, obtains high temperature resistant medical deodoring materials.
The preparation method of described high temperature resistant medical deodoring materials, the condition be uniformly mixed in step one is stirring velocity 160-180 rev/min, churning time 20-30 minute.
The preparation method of described high temperature resistant medical deodoring materials, in step 2, the pressure of condition of negative pressure is 0.01-0.05MPa.
The preparation method of described high temperature resistant medical deodoring materials, in step 3, bake out temperature is 80-100 DEG C.
The preparation method of described high temperature resistant medical deodoring materials, being crushed to particle diameter in step 3 is 1-3mm.
The preparation method of described high temperature resistant medical deodoring materials, in step 4, ammonia fumigates the container for being placed in by material three with import and outlet, and continue to pass into ammonia and fumigate material three, fumigation time is 80-100 minute.
The preparation method of described high temperature resistant medical deodoring materials, in step 5, extrusion moulding condition is that twin screw extruder divides four temperature stage, and the first stage is 160-180 DEG C, and subordinate phase is 170-190 DEG C, phase III is 200-210 DEG C, and fourth stage is 210-220 DEG C.
The high temperature resistant medical deodoring materials that preparation method provided by the invention prepares has good performance, and wherein notched Izod impact strength reaches 367KJ/m
2, tensile strength reaches more than 112MPa, and elongation at break reaches 8%, and heat-drawn wire reaches more than 186 DEG C, has the deodoriging properties of highly significant simultaneously.
Embodiment
Embodiment 1
A preparation method for high temperature resistant medical deodoring materials, comprises following preparation process:
Step one, by with PVC10 part of parts by weight, PET2 part, dioctyl phthalate (DOP) 1 part, 0.8 part, Yelkin TTS, polycarbonate 3 parts and barium stearate 1 part join in mixing and blending machine and are uniformly mixed, stirring velocity 160 revs/min, churning time 20 minutes, obtains material one;
Step 2, joins in reactor by material one, adds 1 part, the glass fibre with parts by weight, methyl tetrahydrophthalic anhydride 0.8 part, 1 part, aluminum oxide, 2 parts, trevira, 3-third-2-alkene acyloxy propane-1-potassium sulfonate 0.5 part, be be heated to 60 DEG C under the condition of negative pressure of 0.01MPa at pressure, stir 2 hours, be then warming up to 90 DEG C in atmospheric conditions, stir 30 minutes, be down to 0 DEG C with the cooling rate of 20 DEG C/min, and keep 10 minutes under 0 DEG C of condition, obtain material two;
Step 3, dries material two, and bake out temperature is 80 DEG C, and being crushed to particle diameter is 1-3mm, obtains material three;
Step 4, uses ammonia to fumigate material three, and be specially the container be placed in by material three with import and outlet, continue to pass into ammonia and fumigate material three, fumigation time is 80 minutes, obtains material four;
Step 5, by material four by extrusion moulding in twin screw extruder, condition is that twin screw extruder divides four temperature stage, first stage is 160 DEG C, and subordinate phase is 170 DEG C, and the phase III is 200 DEG C, fourth stage is 210 DEG C, obtains high temperature resistant medical deodoring materials.
Embodiment 2
A preparation method for high temperature resistant medical deodoring materials, comprises following preparation process:
Step one, by with PVC13 part of parts by weight, PET3 part, dioctyl phthalate (DOP) 2 parts, 1 part, Yelkin TTS, polycarbonate 4 parts and barium stearate 2 parts join in mixing and blending machine and are uniformly mixed, stirring velocity 165 revs/min, churning time 23 minutes, obtains material one;
Step 2, joins in reactor by material one, adds 2 parts, the glass fibre with parts by weight, methyl tetrahydrophthalic anhydride 1 part, 2 parts, aluminum oxide, 3 parts, trevira, 3-third-2-alkene acyloxy propane-1-potassium sulfonate 0.6 part, be be heated to 63 DEG C under the condition of negative pressure of 0.02MPa at pressure, stir 3 hours, be then warming up to 94 DEG C in atmospheric conditions, stir 36 minutes, be down to 0 DEG C with the cooling rate of 22 DEG C/min, and keep 13 minutes under 0 DEG C of condition, obtain material two;
Step 3, dries material two, and bake out temperature is 85 DEG C, and being crushed to particle diameter is 1-3mm, obtains material three;
Step 4, uses ammonia to fumigate material three, and be specially the container be placed in by material three with import and outlet, continue to pass into ammonia and fumigate material three, fumigation time is 86 minutes, obtains material four;
Step 5, by material four by extrusion moulding in twin screw extruder, condition is that twin screw extruder divides four temperature stage, first stage is 163 DEG C, and subordinate phase is 172 DEG C, and the phase III is 204 DEG C, fourth stage is 215 DEG C, obtains high temperature resistant medical deodoring materials.
Embodiment 3
A preparation method for high temperature resistant medical deodoring materials, comprises following preparation process:
Step one, by with PVC18 part of parts by weight, PET5 part, dioctyl phthalate (DOP) 3 parts, 1.3 parts, Yelkin TTS, polycarbonate 7 parts and barium stearate 2 parts join in mixing and blending machine and are uniformly mixed, stirring velocity 170 revs/min, churning time 28 minutes, obtains material one;
Step 2, joins in reactor by material one, adds 2 parts, the glass fibre with parts by weight, methyl tetrahydrophthalic anhydride 1.2 parts, 3 parts, aluminum oxide, 4 parts, trevira, 3-third-2-alkene acyloxy propane-1-potassium sulfonate 0.7 part, be be heated to 68 DEG C under the condition of negative pressure of 0.03MPa at pressure, stir 3 hours, be then warming up to 96 DEG C in atmospheric conditions, stir 45 minutes, be down to 0 DEG C with the cooling rate of 23 DEG C/min, and keep 16 minutes under 0 DEG C of condition, obtain material two;
Step 3, dries material two, and bake out temperature is 95 DEG C, and being crushed to particle diameter is 1-3mm, obtains material three;
Step 4, uses ammonia to fumigate material three, and be specially the container be placed in by material three with import and outlet, continue to pass into ammonia and fumigate material three, fumigation time is 90 minutes, obtains material four;
Step 5, by material four by extrusion moulding in twin screw extruder, condition is that twin screw extruder divides four temperature stage, first stage is 172 DEG C, and subordinate phase is 184 DEG C, and the phase III is 207 DEG C, fourth stage is 215 DEG C, obtains high temperature resistant medical deodoring materials.
Embodiment 4
A preparation method for high temperature resistant medical deodoring materials, comprises following preparation process:
Step one, by with PVC20 part of parts by weight, PET6 part, dioctyl phthalate (DOP) 4 parts, 1.5 parts, Yelkin TTS, polycarbonate 8 parts and barium stearate 3 parts join in mixing and blending machine and are uniformly mixed, stirring velocity 180 revs/min, churning time 30 minutes, obtains material one;
Step 2, joins in reactor by material one, adds 3 parts, the glass fibre with parts by weight, methyl tetrahydrophthalic anhydride 1.5 parts, 4 parts, aluminum oxide, 5 parts, trevira, 3-third-2-alkene acyloxy propane-1-potassium sulfonate 1 part, be be heated to 70 DEG C under the condition of negative pressure of 0.05MPa at pressure, stir 4 hours, be then warming up to 100 DEG C in atmospheric conditions, stir 50 minutes, be down to 0 DEG C with the cooling rate of 25 DEG C/min, and keep 20 minutes under 0 DEG C of condition, obtain material two;
Step 3, dries material two, and bake out temperature is 100 DEG C, and being crushed to particle diameter is 1-3mm, obtains material three;
Step 4, uses ammonia to fumigate material three, and be specially the container be placed in by material three with import and outlet, continue to pass into ammonia and fumigate material three, fumigation time is 100 minutes, obtains material four;
Step 5, by material four by extrusion moulding in twin screw extruder, condition is that twin screw extruder divides four temperature stage, first stage is 180 DEG C, and subordinate phase is 190 DEG C, and the phase III is 210 DEG C, fourth stage is 220 DEG C, obtains high temperature resistant medical deodoring materials.
Reference examples 1
A preparation method for high temperature resistant medical deodoring materials, comprises following preparation process:
Step one, by with PVC18 part of parts by weight, PET5 part, dioctyl phthalate (DOP) 3 parts, 1.3 parts, Yelkin TTS, polycarbonate 7 parts and barium stearate 2 parts join in mixing and blending machine and are uniformly mixed, stirring velocity 170 revs/min, churning time 28 minutes, obtains material one;
Step 2, material one is joined in reactor, adding 2 parts, the glass fibre with parts by weight, 4 parts, trevira, is be heated to 68 DEG C under the condition of negative pressure of 0.03MPa at pressure, stir 3 hours, then be warming up to 96 DEG C in atmospheric conditions, stir 45 minutes, be down to 0 DEG C with the cooling rate of 23 DEG C/min, and keep 16 minutes under 0 DEG C of condition, obtain material two;
Step 3, dries material two, and bake out temperature is 95 DEG C, and being crushed to particle diameter is 1-3mm, obtains material three;
Step 4, uses ammonia to fumigate material three, and be specially the container be placed in by material three with import and outlet, continue to pass into ammonia and fumigate material three, fumigation time is 90 minutes, obtains material four;
Step 5, by material four by extrusion moulding in twin screw extruder, condition is that twin screw extruder divides four temperature stage, first stage is 172 DEG C, and subordinate phase is 184 DEG C, and the phase III is 207 DEG C, fourth stage is 215 DEG C, obtains high temperature resistant medical deodoring materials.
Reference examples 2
A preparation method for high temperature resistant medical deodoring materials, comprises following preparation process:
Step one, by with PVC18 part of parts by weight, PET5 part, dioctyl phthalate (DOP) 3 parts, 1.3 parts, Yelkin TTS, polycarbonate 7 parts and barium stearate 2 parts join in mixing and blending machine and are uniformly mixed, stirring velocity 170 revs/min, churning time 28 minutes, obtains material one;
Step 2, material one is joined in reactor, adds 2 parts, the glass fibre with parts by weight, methyl tetrahydrophthalic anhydride 1.2 parts, 3 parts, aluminum oxide, 4 parts, trevira, 3-third-2-alkene acyloxy propane-1-potassium sulfonate 0.7 part is be heated to 68 DEG C under the condition of negative pressure of 0.03MPa at pressure, stir 3 hours, then be warming up to 96 DEG C in atmospheric conditions, stir 45 minutes, obtain material two;
Step 3, dries material two, and bake out temperature is 95 DEG C, and being crushed to particle diameter is 1-3mm, obtains material three;
Step 4, uses ammonia to fumigate material three, and be specially the container be placed in by material three with import and outlet, continue to pass into ammonia and fumigate material three, fumigation time is 90 minutes, obtains material four;
Step 5, by material four by extrusion moulding in twin screw extruder, condition is that twin screw extruder divides four temperature stage, first stage is 172 DEG C, and subordinate phase is 184 DEG C, and the phase III is 207 DEG C, fourth stage is 215 DEG C, obtains high temperature resistant medical deodoring materials.
Performance test is carried out to the high temperature resistant medical deodoring materials that above embodiment and reference examples prepare, wherein deodoriging properties be by mass concentration be 20% ammonia soln be encapsulated in the sealed vessel that this deodoring materials is prepared from, and be placed in closed environment, detect NH residual in ammoniacal liquor in sealed vessel after a period of time
4 +concentration, carry out the test of other aspect performances, concrete outcome is as follows simultaneously:
As can be seen from above the performance test results, the high temperature resistant medical deodoring materials that embodiment 1-4 prepares has good performance, and wherein notched Izod impact strength reaches 367KJ/m
2, tensile strength reaches more than 112MPa, and elongation at break reaches 8%, and heat-drawn wire reaches more than 186 DEG C, has the deodoriging properties of highly significant simultaneously.Reference examples 1 and reference examples 2 are the tests carried out on the basis of embodiment 3, wherein do not add methyl tetrahydrophthalic anhydride in step 2 in reference examples 1, aluminum oxide and 3-third-2-alkene acyloxy propane-1-potassium sulfonate, result causes the deodoriging properties of material significantly to decline, and in preparation process two, be not cooled to 0 DEG C in reference examples 2, result causes the heat-drawn wire of material obviously to reduce, and therefore can illustrate that this step further enhancing the heat resistance of material.
Claims (7)
1. a preparation method for high temperature resistant medical deodoring materials, is characterized in that, comprises following preparation process:
Step one, by with PVC10-20 part of parts by weight, PET2-6 part, dioctyl phthalate (DOP) 1-4 part, Yelkin TTS 0.8-1.5 part, polycarbonate 3-8 part and barium stearate 1-3 part join in mixing and blending machine and are uniformly mixed, and obtain material one;
Step 2, material one is joined in reactor, add the glass fibre 1-3 part with parts by weight, methyl tetrahydrophthalic anhydride 0.8-1.5 part, aluminum oxide 1-4 part, trevira 2-5 part, 3-third-2-alkene acyloxy propane-1-potassium sulfonate 0.5-1 part, under condition of negative pressure, be heated to 60-70 DEG C, stir 2-4 hour, be then warming up to 90-100 DEG C in atmospheric conditions, stir 30-50 minute, be down to 0 DEG C with the cooling rate of 20-25 DEG C/min, and keep 10-20 minute under 0 DEG C of condition, obtain material two;
Step 3, dries material two, pulverizes, obtains material three;
Step 4, uses ammonia to fumigate material three, obtains material four;
Step 5, by material four by extrusion moulding in twin screw extruder, obtains high temperature resistant medical deodoring materials.
2. the preparation method of high temperature resistant medical deodoring materials according to claim 1, is characterized in that, the condition be uniformly mixed in step one is stirring velocity 160-180 rev/min, churning time 20-30 minute.
3. the preparation method of high temperature resistant medical deodoring materials according to claim 1, is characterized in that, in step 2, the pressure of condition of negative pressure is 0.01-0.05MPa.
4. the preparation method of high temperature resistant medical deodoring materials according to claim 1, is characterized in that, in step 3, bake out temperature is 80-100 DEG C.
5. the preparation method of high temperature resistant medical deodoring materials according to claim 1, is characterized in that, being crushed to particle diameter in step 3 is 1-3mm.
6. the preparation method of high temperature resistant medical deodoring materials according to claim 1, it is characterized in that, in step 4, ammonia fumigates the container for being placed in by material three with import and outlet, and continue to pass into ammonia and fumigate material three, fumigation time is 80-100 minute.
7. the preparation method of high temperature resistant medical deodoring materials according to claim 1, it is characterized in that, in step 5, extrusion moulding condition is that twin screw extruder divides four temperature stage, first stage is 160-180 DEG C, subordinate phase is 170-190 DEG C, phase III is 200-210 DEG C, and fourth stage is 210-220 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106221170A (en) * | 2016-07-29 | 2016-12-14 | 江苏蓝湾生物科技有限公司 | A kind of preparation method of high temperature resistant deodorization masterbatch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040147674A1 (en) * | 2001-05-14 | 2004-07-29 | Yutaka Kakeda | Thermoplastic resin composition |
| CN1653123A (en) * | 2002-01-16 | 2005-08-10 | 伊斯曼化学公司 | Novel carbohydrate esters and polyol esters as plasticizers for polymers, compositions and articles including such plasticizers and methods of using the same |
| CN104387693A (en) * | 2014-10-24 | 2015-03-04 | 苏州蔻美新材料有限公司 | Medical plastic composite material and preparation method thereof |
| CN104448609A (en) * | 2014-11-24 | 2015-03-25 | 苏州市贝克生物科技有限公司 | PVC film for blood transfusion bag and preparation method of PVC film for blood transfusion bag |
| CN104861371A (en) * | 2014-12-29 | 2015-08-26 | 殷培花 | High-strength high-toughness polycarbonate modified polyvinyl chloride composite material |
-
2015
- 2015-09-23 CN CN201510614089.5A patent/CN105131473A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040147674A1 (en) * | 2001-05-14 | 2004-07-29 | Yutaka Kakeda | Thermoplastic resin composition |
| CN1653123A (en) * | 2002-01-16 | 2005-08-10 | 伊斯曼化学公司 | Novel carbohydrate esters and polyol esters as plasticizers for polymers, compositions and articles including such plasticizers and methods of using the same |
| CN104387693A (en) * | 2014-10-24 | 2015-03-04 | 苏州蔻美新材料有限公司 | Medical plastic composite material and preparation method thereof |
| CN104448609A (en) * | 2014-11-24 | 2015-03-25 | 苏州市贝克生物科技有限公司 | PVC film for blood transfusion bag and preparation method of PVC film for blood transfusion bag |
| CN104861371A (en) * | 2014-12-29 | 2015-08-26 | 殷培花 | High-strength high-toughness polycarbonate modified polyvinyl chloride composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106221170A (en) * | 2016-07-29 | 2016-12-14 | 江苏蓝湾生物科技有限公司 | A kind of preparation method of high temperature resistant deodorization masterbatch |
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Application publication date: 20151209 |