CN106541529A - Alkylation glass mold and aqueous polyurethane condom manufacture method for aqueous polyurethane condom manufacture - Google Patents
Alkylation glass mold and aqueous polyurethane condom manufacture method for aqueous polyurethane condom manufacture Download PDFInfo
- Publication number
- CN106541529A CN106541529A CN201610959993.4A CN201610959993A CN106541529A CN 106541529 A CN106541529 A CN 106541529A CN 201610959993 A CN201610959993 A CN 201610959993A CN 106541529 A CN106541529 A CN 106541529A
- Authority
- CN
- China
- Prior art keywords
- alkylation
- glass mold
- aqueous polyurethane
- condom
- glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/38—Moulds, cores or other substrates
- B29C41/40—Cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7538—Condoms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The present invention discloses a kind of alkylation glass mold for aqueous polyurethane condom manufacture, and the alkylation glass mold is obtained by being alkylated process to the surface of glass mold with alkylating reagent.Included using the method for the alkylation glass mold production aqueous polyurethane condom（1）Add surface tension modifier in hydrotropism's polyaminoester emulsion, the surface tension of aqueous polyurethane emulsion is adjusted to 25mN/m～35 mN/m；（2）Alkylation glass mold is immersed into step（1）Aqueous polyurethane emulsion, take out, drying, crimping, the demoulding obtain aqueous polyurethane condom.The present invention directly can carry out surface modification using existing natural emulsion condom maturation glass mold, and glass mold low cost, surface alkylation operation are simple, and coating is durable in use, in alkylation glass surface easy mold release, easy crimping after glued membrane drying.It was verified that the present invention can realize aqueous polyurethane condom industrialized production, process stabilizing.
Description
Technical field
The invention belongs to contraceptive field, and in particular to a kind of alkylation glass for aqueous polyurethane condom manufacture
Glass mould and the method for producing aqueous polyurethane condom using the mould.
Background technology
Condom is the current contraception being most widely used in the world and the utensil for preventing spread of sexually transmitted diseases, in existing product
In mainly using natural emulsion making, but there are anaphylaxiss in natural emulsion condom；Residual nitrosamine cause cancer is dangerous；
There is micropore virus isolation effect poor；The shortcoming of thickness poor user experience.Here it is why Bill and Melinda's Gates's fund
The research and development of of new generation condom are subsidized to a high-profile can.
Aqueous polyurethane condom is nontoxic without anaphylaxiss, and intensity is high, and good heat conductivity, viral isolation effect are good, can be with
The ultra-thin condoms of 0.01mm are prepared, Consumer's Experience is good.Development trend shows that aqueous polyurethane condom is to be replaced rapidly day
So latex prophylactic, becomes following main product.
Existing more than the ten years history of the research of aqueous polyurethane condom, the only Japanese ridge sheet of current viable commercial product and phase
Mould rubber, but this two company takes the mode of strict technical know-how, two companies all not to announce the patent being of practical significance.
Aqueous polyurethane condom manufacture is related to two aspect core technologies, is the aqueouss for being adapted to condom performance requirement first
Polyurethane is researched and developed, next to that aqueous polyurethane contraception sleeve forming.The present invention is not related to aqueous polyurethane research and development.
Aqueous polyurethane condom moulding process has no essential difference with natural emulsion condom moulding process, can adopt
With straight leaching band film drying process production, also without sulfuration, technique is more simple for aqueous polyurethane condom.
The core of aqueous polyurethane molding is the exploitation of its particular manufacturing craft.Natural emulsion condom adopts glass, ceramics, no
Used as mould, the critical surface tension of glass is 73mN/m to rust steel, and ceramics are 61mN/m, and rustless steel is 75mN/m, and liquid day
So latex surface tension force is 38mN/m～40mN/m, and the surface tension of NRL films is 32mN/m, in theory liquid genuine milk
Glue can be in glass, and ceramics are sprawled on stainless steel mould, and its desciccator diaphragm adhesive force on these moulds is low, smoothly can roll up
Side and stripping, realize technological requirement.And the surface tension of liquid waterborne polyurethane is in 55mN/m or so, its dry coating surface
In 45mN/m or so, theory and practice all proves that liquid waterborne polyurethane can be sprawled on these moulds to power, but is dried aqueouss
Polyurethane coating film has very strong adhesive force on these moulds, it is impossible to crimping and the demoulding.Therefore aqueous polyurethane condom without
Method is using glass, ceramics, stainless steel mould production.
102107473 A of CN adopt politef（PTFE）Material as aqueous polyurethane condom mould, but
The surface energy of politef（18.5mJ/m2）It is too low, although aqueous polyurethane dry film is very easy in Teflon mould
Upper crimping and the demoulding, but aqueous polyurethane cannot be sprawled in politef, serious " sliding glue phenomenon " occur.
104339485 A of CN adopt polyethylene or polypropylene as mould, and the surface energy of polyethylene/polypropylene is 31
mJ/m2, inventor adopts ethylene glycol monomethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monobutyl ether etc. as levelling
Agent, reduces the surface tension of liquid polyurethane, and realization is sprawled on polyethylene/polypropylene mould, and is easy to crimping and stripping.This
There are two serious problems in invention, first, ethylene glycol monomethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monobutyl ether is all
For poisonous and harmful substance, Heavy environmental pollution is caused while it is also possible to causing condom not meet safe and sanitary standard；Second,
The mechanical property and anti ageing property of polyethylene/polypropylene does not reach commercial Application requirement.During condom manufacture, mould is long
High temperature of the phase in the temperature difference more than 100 DEG C（130℃）And low temperature（20℃）Middle recycling, polyethylene/polypropylene mould occur
Cracking, efflorescence, rough surface and scrap, while crimping machinery can produce mechanical friction and cause mould in very short time to mould
Inside there is abrasion to scrap.Although polyethylene/polypropylene mould successfully can prepare aqueous polyurethane condom in laboratory,
Without practical significance in large-scale industrial production.
The content of the invention
The technical problem to be solved in the present invention is to overcome existing defect, there is provided a kind of to be used for aqueous polyurethane condom
The alkylation glass mold of production and the method for producing aqueous polyurethane condom using the mould.
In order to solve above-mentioned technical problem, the invention provides following technical scheme：
For the alkylation glass mold of aqueous polyurethane condom manufacture, its feature is：The alkylation glass mold is
Obtained by being alkylated process to the surface of glass mold with alkylating reagent.
Preferably, the surface energy of the alkylation glass mold is 28 mJ/m2～38 mJ/m2。
Preferably, described alkylating reagent is HMDS and/or dimethyldichlorosilane.
The preparation method of above-mentioned alkylation glass mold, its feature is：It is first that alkylating reagent is molten with organic solvent
Solution, then glass mold is immersed, it is dried after immersion, obtains alkylation glass mold.
The method that aqueous polyurethane condom is produced using above-mentioned alkylation glass mold, comprises the steps：
（1）Add surface tension modifier in hydrotropism's polyaminoester emulsion, adjust the surface tension of aqueous polyurethane emulsion to
25mN/m～35 mN/m；
（2）Alkylation glass mold is immersed into step（1）Aqueous polyurethane emulsion, take out, drying, crimping, the demoulding are obtained
Aqueous polyurethane condom.
Preferably, described surface tension modifier is polyether modified siloxane or acetylenic glycols ethoxy compound.
Glass surface contains a large amount of silicone hydroxyls, and silicone hydroxyl can be reacted with alkylating reagent, by alkyl with monolayer or
Number nano thickness is covalently connected to glass surface：
After alkylation, the surface energy of surface of glass die declines to a great extent, adhesive force of the aqueous polyurethane desciccator diaphragm on its surface
Decline to a great extent, aqueous polyurethane desciccator diaphragm can be in the smooth crimping of alkylation glass surface and the demoulding.
After the surface energy of alkylation glass mold is reduced, liquid waterborne polyaminoester emulsion is difficult in its surface spreading, straight to soak
When " sliding glue " phenomenon occurs, therefore the surface energy of aqueous polyurethane emulsion is adjusted to compare alkyl using surface tension modifier
The surface energy for changing glass is lower slightly, effectively solves liquid waterborne polyurethane and sprawls problem in die surface.
The beneficial effects of the present invention is：
1st, the present invention directly can carry out surface modification using existing natural emulsion condom maturation glass mold, glass mold into
This low, its mature production technology, it is durable in use, there is ready-made supply of commodities.
2nd, surface of glass die alkylation process is simple, only needs alkylating reagent soak at room temperature, washs, drying.
3rd, glass surface alkylation coating is to be covalently bonded to glass surface with unimolecule or several nanometers, with reference to jail
Degree is high, durable in use, can undergo the mechanical friction in crimping process.
4th, Jing after long-time use, alkylation breakdown of coating can recover alkylation glass mold again in alkylation.
5th, it is for the surface tension modifier environmental protection of liquid waterborne polyaminoester emulsion, healthy and safe, in alkane after glued membrane drying
Base glass surface easy mold release, easy crimping.It was verified that the present invention can realize aqueous polyurethane condom industrialized production,
Process stabilizing.
Specific embodiment
Hereinafter the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment 1
The alkylation of glass mold：Commercial natural emulsion condom glass mold, soaks 2 hours in cleanout fluid, distilled water punching
Wash clean, 110 DEG C of drying, then glass mold is immersed in the chloroform soln of the HMDS that concentration is 10wt%
In, soaking 12 hours at normal temperatures, take out, chloroform is rinsed, and is then dried at 110 DEG C, is obtained alkylation glass mold, by connecing
Feeler measurement method determines the detection liquid of known surface energy parameter（Redistilled water, glycerol, Methanamide, diiodomethane, second two
Alcohol）In the contact angle of die surface, using Young ' s Equation for Calculating, its surface energy is 34 mJ/m2, concrete operations refer to " connect
Feeler method measures the surface energy of macromolecular material ", Wang Hui etc., Central South University's journal（Natural science edition）, 2006, volume 37
5 phases.
Embodiment 2
The alkylation of glass mold：Commercial natural emulsion condom glass mold, soaks 2 hours in cleanout fluid, distilled water punching
Wash clean, 110 DEG C of drying, then glass mold is immersed in the chloroform soln of the dimethyldichlorosilane that concentration is 10wt%
In, soaking 12 hours at normal temperatures, take out, chloroform is rinsed, and is then dried at 110 DEG C, is obtained alkylation glass mold, by connecing
Feeler measurement method determines the detection liquid of known surface energy parameter（Redistilled water, glycerol, Methanamide, diiodomethane, second two
Alcohol）In the contact angle of die surface, using Young ' s Equation for Calculating, its surface energy is 35 mJ/m2。
Embodiment 3
Aqueous polyurethane surface tension is adjusted：First routinely consumption adds thickening agent, froth breaking in commercially available 35% aqueous polyurethane
Agent, coalescents etc., are made into aqueous polyurethane emulsion, then add the polyether modified siloxane of 0.2wt% in emulsion（BYK-
310）（In 21 CFR of U.S. FDA (food and medicine), Section 175.300 is allowed in indirect food auxiliary agent, is connecing with food
Used in tactile coating, binding agent）Adjust the surface tension of emulsion.The table of liquid waterborne polyaminoester emulsion is determined using Pulling escape
Face tension force is 32 mN/m.
Aqueous polyurethane condom moulding process：Alkylation glass mold prepared by embodiment 1 is directly immersed in above-mentioned water
Property polyaminoester emulsion in, propose at a slow speed, rotating mould keeps coating uniform, proceeds to, and can carry out if desired
Secondary and multiple straight leaching, straight every time to soak post-drying, then using mechanical means crimping, water peels off the demoulding, obtains aqueous polyurethane
Condom.
Embodiment 4
Aqueous polyurethane surface tension is adjusted：First routinely consumption adds thickening agent, froth breaking in commercially available 35% aqueous polyurethane
Agent, coalescents etc., are made into aqueous polyurethane emulsion, then add the acetylenic glycols ethoxy compound of 0.2wt% in emulsion
（Surfynol 104DPM）（In 21 CFR of U.S. FDA (food and medicine), Section 175.300 is allowed in indirect food and helps
Agent, used in the coating, binding agent contacted with food）Adjust the surface tension of emulsion.The poly- ammonia of aqueouss is determined using Pulling escape
Ester surface tension is 33.1 mN/m.
Aqueous polyurethane condom moulding process：Alkylation glass mold prepared by embodiment 2 is directly immersed in above-mentioned water
Property polyaminoester emulsion in, propose at a slow speed, rotating mould keeps coating uniform, proceeds to, and can carry out if desired
Secondary and multiple straight leaching, straight every time to soak post-drying, then using mechanical means crimping, water peels off the demoulding, obtains aqueous polyurethane
Condom.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to,
Although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, which still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in the present invention's
Within protection domain.
Claims (6)
1. the alkylation glass mold of aqueous polyurethane condom manufacture is used for, it is characterised in that：The alkylation glass mold
It is to be obtained by being alkylated process to the surface of glass mold with alkylating reagent.
2. alkylation glass mold according to claim 1, it is characterised in that：The surface energy of the alkylation glass mold
For 28 mJ/m2～38 mJ/m2。
3. alkylation glass mold according to claim 1, it is characterised in that：Described alkylating reagent is hexamethyl two
Silicon amine alkane and/or dimethyldichlorosilane.
4. the preparation method of the alkylation glass mold described in claim 1, it is characterised in that：First by alkylating reagent with organic
Solvent dissolves, then immerses glass mold, is dried, obtains alkylation glass mold after immersion.
5. the method for producing aqueous polyurethane condom using the alkylation glass mold described in claim 1, including following step
Suddenly：
（1）Add surface tension modifier in hydrotropism's polyaminoester emulsion, adjust the surface tension of aqueous polyurethane emulsion to
25mN/m～35 mN/m；
（2）Alkylation glass mold is immersed into step（1）Aqueous polyurethane emulsion, take out, drying, crimping, the demoulding are obtained
Aqueous polyurethane condom.
6. method according to claim 5, it is characterised in that：Described surface tension modifier is polyether modified siloxane
Or acetylenic glycols ethoxy compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610959993.4A CN106541529A (en) | 2016-10-28 | 2016-10-28 | Alkylation glass mold and aqueous polyurethane condom manufacture method for aqueous polyurethane condom manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610959993.4A CN106541529A (en) | 2016-10-28 | 2016-10-28 | Alkylation glass mold and aqueous polyurethane condom manufacture method for aqueous polyurethane condom manufacture |
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| Publication Number | Publication Date |
|---|---|
| CN106541529A true CN106541529A (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610959993.4A Pending CN106541529A (en) | 2016-10-28 | 2016-10-28 | Alkylation glass mold and aqueous polyurethane condom manufacture method for aqueous polyurethane condom manufacture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108095882A (en) * | 2017-04-06 | 2018-06-01 | 海氏海诺乳胶（青岛）有限公司 | A kind of high resiliency skin softening type polyurethane sheath and its manufacturing method |
| CN108099075A (en) * | 2017-04-06 | 2018-06-01 | 海氏海诺乳胶（青岛）有限公司 | A kind of reinforced polyurethane condom of high draw ratio toughness and its manufacturing method |
| CN111410837A (en) * | 2020-03-27 | 2020-07-14 | 合肥华越新材料科技有限公司 | Resin treatment process for waterborne polyurethane condom |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102643029A (en) * | 2012-04-24 | 2012-08-22 | 奇瑞汽车股份有限公司 | Hydrophobic modification agent and hydrophobic glass modified by hydrophobic modification agent and method for preparing hydrophobic glass |
| CN104339485A (en) * | 2014-10-23 | 2015-02-11 | 中国化工株洲橡胶研究设计院有限公司 | Production method of polyurethane latex condom and special mold thereof |
-
2016
- 2016-10-28 CN CN201610959993.4A patent/CN106541529A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102643029A (en) * | 2012-04-24 | 2012-08-22 | 奇瑞汽车股份有限公司 | Hydrophobic modification agent and hydrophobic glass modified by hydrophobic modification agent and method for preparing hydrophobic glass |
| CN104339485A (en) * | 2014-10-23 | 2015-02-11 | 中国化工株洲橡胶研究设计院有限公司 | Production method of polyurethane latex condom and special mold thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108095882A (en) * | 2017-04-06 | 2018-06-01 | 海氏海诺乳胶（青岛）有限公司 | A kind of high resiliency skin softening type polyurethane sheath and its manufacturing method |
| CN108099075A (en) * | 2017-04-06 | 2018-06-01 | 海氏海诺乳胶（青岛）有限公司 | A kind of reinforced polyurethane condom of high draw ratio toughness and its manufacturing method |
| CN111410837A (en) * | 2020-03-27 | 2020-07-14 | 合肥华越新材料科技有限公司 | Resin treatment process for waterborne polyurethane condom |
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Application publication date: 20170329 |