CN106751141A - A kind of medical grade or food grade plastic composite and preparation method thereof - Google Patents
A kind of medical grade or food grade plastic composite and preparation method thereof Download PDFInfo
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- CN106751141A CN106751141A CN201611064022.XA CN201611064022A CN106751141A CN 106751141 A CN106751141 A CN 106751141A CN 201611064022 A CN201611064022 A CN 201611064022A CN 106751141 A CN106751141 A CN 106751141A
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- plastic composite
- food grade
- medical grade
- grade plastic
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- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/02—Applications for biomedical use
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a kind of medical grade or food grade plastic composite and preparation method thereof, the medical grade or food grade plastic composite are made up of following parts by weight component：1 2.5 parts of 55 60 parts of polyvinyl chloride, 31 38 parts of dimethyl terephthalate (DMT) and compound stabilizer, the compound stabilizer are made up of 8 15 parts of polyethylene glycol (PEG) oleates, 37 parts of epoxidized soybean oils and 40 60 parts of itrile group diethyl phosphates.Medical grade provided by the present invention or food grade plastic composite, with excellent storage stability, weatherability, and effectively prevent the migration of small molecule auxiliary agent, have the advantages that safety and environmental protection is nontoxic.
Description
Technical field
The invention belongs to medical or technical field of food material, and in particular to a kind of medical grade or food grade plastic composite wood
Material.
Background technology
Polyvinyl chloride is a kind of general-purpose plastics, and it is rotten with anti-chemistry as the existing history for many years of medical, edible material
Corrosion, has very strong resistance to oxidant, reducing agent and strong acid, and wear-resisting, it is easy to produces, use safety, cost
It is cheap.Polyvinyl chloride is to light, the less stable of heat.Softening point is 80 DEG C, starts to decompose in 130 DEG C.In not heat stabilizers
In the case of, start to decompose during 100 DEG C of polyvinyl chloride, more than 130 DEG C are decomposed faster.It is heated and decomposites releasing hydrogen chloride gas
Body, (hydrogen chloride gas are toxic gases) makes it change colour, by white → light yellow → red → brown → black.Purple in sunlight
Outside line and oxygen can make polyvinyl chloride that photooxidation decomposition occurs, thus make the flexible decline of polyvinyl chloride, last embrittlement.While polychlorostyrene
Additive in ethene can the migration precipitation during use is stored, human health is endangered significantly, therefore generally in polyvinyl chloride
A small amount of stabilizer is added in medical or food grade materials, so as to reduce the degraded of polrvinyl chloride product, the quality of product is improved.
In recent years, the compound stabilizer for being used on PVC productions uses lead salt and metal soap compound stabilizer mostly,
Due to largely using lead salt in its formula, cause that environmental pollution is big, plasticization temperature is high, melt flow is poor, chance sulphur changes colour etc. asks
Topic.In particular with people to the environmental requirement more and more higher of plastic products, develop nontoxic calcium zinc compound stabilizer and increasingly draw
Play the concern of people.Nontoxic calcium zinc compound stabilizer is calcium zinc organic salt, phosphite ester, polyalcohol, the group such as antioxidant and solvent
The compound for dividing.Liquid calcium zinc stabilizer is good with resin and plasticizer compatbility, and the transparency is good, is difficult to separate out, and consumption is less, makes
With conveniently.Major defect is poor lubricity, reduces the softening point of product, and long-term storage can go bad.
Need to develop the polyvinyl chloride composite wood that a kind of environmentally friendly, nontoxic, long-time stability are high, prevent additive from migrating for this
Material.
The content of the invention
The invention provides a kind of medical grade or food grade plastic composite, with excellent storage stability, weather-proof
Property, and the migration of small molecule auxiliary agent is effectively prevent, have the advantages that safety and environmental protection is nontoxic.
The technical proposal for solving the technical problem of the invention is：
A kind of medical grade or food grade plastic composite, are made up of following parts by weight component：Polyvinyl chloride 55-60
Part, dimethyl terephthalate (DMT) 31-38 parts and compound stabilizer 1-2.5 parts, the compound stabilizer is by 8-15 parts of polyethylene glycol
Oleate, 3-7 part epoxidized soybean oil and 40-60 parts of itrile group diethyl phosphate composition.
Epoxidized soybean oil can improve the processing characteristics and lubricity of composite.The unstability of PVC is due to being stored up in PVC
During depositing, light heat affecting triggers HCl removings, and double bond is formed in PVC structures, because propylene chlorine activity is very high, can make anti-
Should constantly carry out, continuously form conjugated double bond, as polyene structure, cause product discoloration, embrittlement.It is provided by the present invention multiple
Addition itrile group diethyl phosphate in stabilizer is closed, with electrophilic effect, can effectively prevent propylene chlorine from forming the conjugation pair of stabilization
Key, so as to prevent product from further degrading, improves its stability.The addition of polyethylene glycol (PEG) oleate can increase itrile group p diethylaminobenzoic acid
The compatibility of ester and PVC base system, while its branched structure can effectively be embedded to small molecule auxiliary agent, so as to reduce small
Molecule auxiliary agent migration precipitation, reduces to harm.
Preferably, the medical grade or food grade plastic composite are made up of following parts by weight component：Polychlorostyrene second
2 parts of 58 parts of alkene, 35 parts of dimethyl terephthalate (DMT) and compound stabilizer.
Preferably, the mean molecule quantity of polyethylene glycol is 300-600, now poly- second two in the polyethylene glycol (PEG) oleate
Alcohol oleate is liquid, can uniformly be mixed with the other compositions in compound stabilizer.
Beneficial effects of the present invention are：
Medical grade provided by the present invention or food grade plastic composite have the advantages that safety and environmental protection is nontoxic, and stabilization
Property high, weatherability it is strong, by adding itrile group diethyl phosphate, destruction propylene chlorine forms the conjugated double bond of stabilization, it is to avoid polychlorostyrene second
Olefine resin degrade, increase product stability, while polyethylene glycol (PEG) oleate can increase itrile group diethyl phosphate with it is polyvinyl chloride-based
The compatibility of body, is prevented effectively from small molecule auxiliary agent migration precipitation.
Specific embodiment
Invention also provides a kind of medical grade or the preparation method of food grade plastic composite, including following step
Suddenly：
Polyvinyl chloride, DOTP and the compound stabilizer of required ratio are weighed, is mixed in homogenizer
Close uniform, above-mentioned well mixed plastic master batch is loaded 170-180 DEG C of drying of barrel of mould for plastics, then through twin-screw
Extruder for shaping, after the assay was approved, you can packaging and warehousing.
Preferably, each section of temperature of the double screw extruder is：One section 140-150 DEG C, two sections 155-160 DEG C, three
165-170 DEG C of section, 170-180 DEG C of mold temperature, extruded velocity is 10-30r/min.
Beneficial effects of the present invention are：
Medical grade provided by the present invention or food grade plastic composite have the advantages that safety and environmental protection is nontoxic, and stabilization
Property high, weatherability it is strong, by adding itrile group diethyl phosphate, destruction propylene chlorine forms the conjugated double bond of stabilization, it is to avoid polychlorostyrene second
Olefine resin degrade, increase product stability, while polyethylene glycol (PEG) oleate can increase itrile group diethyl phosphate with it is polyvinyl chloride-based
The compatibility of body, is prevented effectively from small molecule auxiliary agent migration precipitation.
Claims (5)
1. a kind of medical grade or food grade plastic composite, it is characterised in that the medical grade or food grade plastic composite wood
Material is made up of following parts by weight component：Polyvinyl chloride 55-60 parts, dimethyl terephthalate (DMT) 31-38 parts and compound stabilizer
1-2.5 parts, the compound stabilizer is by 8-15 parts of polyethylene glycol (PEG) oleate, 3-7 parts of epoxidized soybean oil and 40-60 parts of itrile group phosphoric acid
Diethylester is constituted.
2. a kind of medical grade as claimed in claim 1 or food grade plastic composite, it is characterised in that the medical grade or
Food grade plastic composite is made up of following parts by weight component：58 parts of polyvinyl chloride, 35 parts of dimethyl terephthalate (DMT) and
2 parts of compound stabilizer.
3. a kind of medical grade as claimed in claim 1 or food grade plastic composite, it is characterised in that the polyethylene glycol
The mean molecule quantity of polyethylene glycol is 300-600 in oleate.
4. a kind of method for preparing medical grade or food grade plastic composite described in claim 1-3 any one, its feature
It is that the preparation method comprises the following steps：
Polyvinyl chloride, DOTP and the compound stabilizer of required ratio are weighed, mixes equal in homogenizer
It is even, above-mentioned well mixed plastic master batch is loaded into the barrel of mould for plastics and is squeezed in 170-180 DEG C of drying, then through twin-screw
Go out machine extrusion molding, after the assay was approved, you can packaging and warehousing.
5. the preparation method of a kind of medical grade or food grade plastic composite as claimed in claim 4, it is characterised in that described
Each section of temperature of double screw extruder be：One section 140-150 DEG C, two sections 155-160 DEG C, three sections 165-170 DEG C, mold temperature
170-180 DEG C, extruded velocity is 10-30r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064022.XA CN106751141A (en) | 2016-11-28 | 2016-11-28 | A kind of medical grade or food grade plastic composite and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064022.XA CN106751141A (en) | 2016-11-28 | 2016-11-28 | A kind of medical grade or food grade plastic composite and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106751141A true CN106751141A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611064022.XA Pending CN106751141A (en) | 2016-11-28 | 2016-11-28 | A kind of medical grade or food grade plastic composite and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863719A (en) * | 2012-10-29 | 2013-01-09 | 成都市新津事丰医疗器械有限公司 | High-Vicat softening temperature rigid polyvinyl chloride (PVC) medical modified material |
| CN103012996A (en) * | 2012-12-25 | 2013-04-03 | 上海新上化高分子材料有限公司 | Medical low-temperature resistant low-mobility polyvinyl chloride calendered film material and preparation method thereof |
| CN105237906A (en) * | 2015-10-12 | 2016-01-13 | 上海新上化高分子材料有限公司 | High-resilience antibacterial medical polyvinyl chloride (PVC) plastic and preparation method thereof |
| CN105566799A (en) * | 2014-10-08 | 2016-05-11 | 中国石油化工股份有限公司 | Environmental-protection type highly-transparent PVC composition for producing medical infusion tubes |
-
2016
- 2016-11-28 CN CN201611064022.XA patent/CN106751141A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863719A (en) * | 2012-10-29 | 2013-01-09 | 成都市新津事丰医疗器械有限公司 | High-Vicat softening temperature rigid polyvinyl chloride (PVC) medical modified material |
| CN103012996A (en) * | 2012-12-25 | 2013-04-03 | 上海新上化高分子材料有限公司 | Medical low-temperature resistant low-mobility polyvinyl chloride calendered film material and preparation method thereof |
| CN105566799A (en) * | 2014-10-08 | 2016-05-11 | 中国石油化工股份有限公司 | Environmental-protection type highly-transparent PVC composition for producing medical infusion tubes |
| CN105237906A (en) * | 2015-10-12 | 2016-01-13 | 上海新上化高分子材料有限公司 | High-resilience antibacterial medical polyvinyl chloride (PVC) plastic and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| MICHAEL等: "《表面活性剂大全》", 31 October 1988, 上海科学技术文献出版社 * |
| 李丽娟: "《药物合成反应技术》", 31 July 2007, 化学工业出版社 * |
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Application publication date: 20170531 |