CN107417880A - A kind of production technology of casting type polyurethane sealing ring - Google Patents
A kind of production technology of casting type polyurethane sealing ring Download PDFInfo
- Publication number
- CN107417880A CN107417880A CN201710437624.3A CN201710437624A CN107417880A CN 107417880 A CN107417880 A CN 107417880A CN 201710437624 A CN201710437624 A CN 201710437624A CN 107417880 A CN107417880 A CN 107417880A
- Authority
- CN
- China
- Prior art keywords
- temperature
- kettle
- sealing ring
- polyurethane
- reflux condenser
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/664—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a kind of production technology of casting type polyurethane sealing ring, first polyurethane and performed polymer are synthesized, after synthesis, weigh in a certain amount of performed polymer and porcelain enamel barrel, 90 DEG C are warming up under agitation, it has been heated to 120 DEG C of vulcanizing agent, 30 60s of rapid stirring, then be poured into it is processed after be heated in 120 DEG C of mould, grasp gellation, matched moulds, vulcanize 45min in 120 DEG C of pressure plare, molding, take out product, trim flash, check, it is 15h in 100 DEG C of after cure times, operating procedure of the present invention is simple, it is and safe and reliable, it can be applied in large-scale production.
Description
Technology field
The present invention relates to a kind of production technology of casting type polyurethane sealing ring, more particularly to the production work of polyurethane sealing ring
Skill.
Background technique
Polyurethane sealing ring have excellent wearability, tear-resistant, chemically-resistant, radiation hardness, high intensity, high resiliency, high mode and
High elongation rate, these combination properties of polyurethane elastomer are that any other commercial rubber and plastics do not possess, and are existed in recent years
Building machinery, mechanically obtain fully flying accreditation and extensive use.
Casting type polyurethane sealing ring product, it is a kind of a kind of new material between rubber and plastics, in reality
In, renewal product as rubber product more, because CPU by brilliance is wearability, high intensity is General Purpose Rubber
3-5 times, high elongation rate 500%-1500%, load support capacity is big, good damping effect, and also oil resistant, acidproof, resistance to ray
The excellent properties such as radiation.
The content of the invention
Goal of the invention：Metal o-ring to be solved by this invention carries in the complicated technical problem of operating procedure, the present invention
For a kind of production work of casting type polyurethane sealing ring,.
Process program：The present invention provides a kind of production technology of casting type polyurethane sealing ring, comprises the following steps：
The first step：Synthesis of polyurethane, prepare raw material and equipment：Adipic acid 328.5kg, ethylene glycol 158.5L, 1,2- propane diols
15.81L, polyester kettle, the first reflux condenser, the second reflux condenser, receiver, sufficient resistance heater is driven before feeding intake first to be made
The temperature of polyester kettle reaches 80-100 DEG C, puts into adipic acid, ethylene glycol and the 1,2-PD of amount of calculation at this temperature, and side is thrown
Material while while start agitator and open resistance heater heating, when temperature rises to 120 DEG C or so, hexanedioic acid is all dissolved in
In ethylene glycol, now, start to be passed through ammonia in toward polyester kettle, when temperature rises to 140-150 DEG C, there will be moisture boiling point alcohol by gathering
Ester kettle is risen in the first reflux condenser, and now the temperature control of the first reflux condenser at 120 DEG C or so, return by low boilers
Micro water vapor is cooled to water into receiver by the second reflux condenser in stream kettle, when temperature rises to 220 DEG C, can close
Resistance heater, while slightly big ammonia, make the temperature in polyester kettle it is constant reaction terminates in 220 DEG C, start vavuum pump,
Polyester kettle sample tap takes out polyurethane.
Second step：Performed polymer synthesizes, and prepares raw material and equipment, polyurethane, BDO, TDI, there-necked flask, weighs one
Quantitative polyurethane is heated to 80 DEG C under agitation in there-necked flask, adds the BDO of metering, isothermal reaction 30min,
Then temperature is down to less than 50 DEG C, then adds TDI, and heating control naturally is reacted 1 hour at 90 DEG C, is finally sampled, and is sealed
Preserve.
3rd step：Polyurethane sealing ring is poured into a mould, and weighs a certain amount of performed polymer with porcelain enamel barrel, being warming up to 90 under agitation
DEG C, be heated to 120 DEG C of vulcanizing agent, stir 30-60s rapidly, be then poured into it is processed after be heated to 120 DEG C
In mould, gellation is grasped, matched moulds, vulcanizes 45min in 120 DEG C of pressure plare, molding, takes out product, trims flash, inspection
Look into, be 15h in 100 DEG C of after cure times.
Further, micro water vapor is cooled to water to reception by the second reflux condenser in the low boilers backflow kettle
After in device, and reacted 2 hours in the case of maintaining the temperature at 150 DEG C, temperature is then risen to 220 with 3- DEG C/10min speed
DEG C, it can so reactant is fully reacted, avoid the waste of material
Further, the addition TDI, when being reacted 1 hour at 90 DEG C, observe and come to nothing in there-necked flask to bubble-free effusion, reaction
Terminate, by observing response state, clearly understand the situation of reactant reaction, avoid unexpected generation.
Operating procedure of the present invention is simple, and securely and reliably, can be applied in large-scale production.
Brief description of the drawings
Fig. 1 is the structured flowchart of the present embodiment synthesis of polyurethane.
Fig. 2 is the structured flowchart of the present embodiment performed polymer synthesis.
Fig. 3 is the structured flowchart of the present embodiment polyurethane sealing ring cast.
Embodiment
It is further elaborated below in conjunction with accompanying drawing and by specific embodiment to the present invention, it should be pointed out that：For this technique
For the common process personnel in field, under the premise without departing from the principles of the invention, to repairing for the various equivalent form of values of the invention
Change and fall within the application appended claims limited range.
Such as Fig. 1, shown in 2,3, process program：The present invention provides a kind of production technology of casting type polyurethane sealing ring, bag
Include following steps：
The first step：Synthesis of polyurethane, prepare raw material and equipment：Adipic acid 328.5kg, ethylene glycol 158.5L, 1,2- propane diols
15.81L, polyester kettle, the first reflux condenser, the second reflux condenser, receiver, sufficient resistance heater is driven before feeding intake first to be made
The temperature of polyester kettle reaches 80-100 DEG C, puts into adipic acid, ethylene glycol and the 1,2-PD of amount of calculation at this temperature, and side is thrown
Material while while start agitator and open resistance heater heating, when temperature rises to 120 DEG C or so, hexanedioic acid is all dissolved in
In ethylene glycol, now, start to be passed through ammonia in toward polyester kettle, when temperature rises to 140-150 DEG C, there will be moisture boiling point alcohol by gathering
Ester kettle is risen in the first reflux condenser, and now the temperature control of the first reflux condenser at 120 DEG C or so, return by low boilers
After micro water vapor is cooled to water into receiver by the second reflux condenser in stream kettle, and maintain the temperature at 150 DEG C of feelings
Reacted 2 hours under condition, temperature then risen to 220 DEG C with 3- DEG C/10min speed, can so reactant is fully reacted,
The waste of material is avoided, when temperature rises to 220 DEG C, resistance heater, while slightly big ammonia can be closed, made in polyester kettle
Temperature it is constant reaction terminates in 220 DEG C, start vavuum pump, polyester kettle sample tap takes out polyurethane.
Second step：Performed polymer synthesizes, and prepares raw material and equipment, polyurethane, BDO, TDI, there-necked flask, weighs one
Quantitative polyurethane is heated to 80 DEG C under agitation in there-necked flask, adds the BDO of metering, isothermal reaction 30min,
Then temperature is down to less than 50 DEG C, then adds TDI, observes to come to nothing in there-necked flask to bubble-free effusion, reaction and terminates, passes through sight
Reactiveness is examined, clearly understands the situation of reactant reaction, avoids unexpected generation, treats that temperature heats up control 90 naturally
Reacted 1 hour at DEG C, finally sample, be sealed.
3rd step：Polyurethane sealing ring is poured into a mould, and weighs a certain amount of performed polymer with porcelain enamel barrel, being warming up to 90 under agitation
DEG C, be heated to 120 DEG C of vulcanizing agent, stir 30-60s rapidly, be then poured into it is processed after be heated to 120 DEG C
In mould, gellation is grasped, matched moulds, vulcanizes 45min in 120 DEG C of pressure plare, molding, takes out product, trims flash, inspection
Look into, be 15h in 100 DEG C of after cure times.
Operating procedure of the present invention is simple, and securely and reliably, can be applied in large-scale production.
Claims (3)
1. a kind of production technology of casting type polyurethane sealing ring, it is characterised in that comprise the following steps：
The first step：Synthesis of polyurethane, prepare raw material and equipment：Adipic acid 328.5kg, ethylene glycol 158.5L, 1,2- propane diols
15.81L, polyester kettle, the first reflux condenser, the second reflux condenser, receiver, sufficient resistance heater is driven before feeding intake first to be made
The temperature of polyester kettle reaches 80-100 DEG C, puts into adipic acid, ethylene glycol and the 1,2-PD of amount of calculation at this temperature, and side is thrown
Material while while start agitator and open resistance heater heating, when temperature rises to 120 DEG C or so, hexanedioic acid is all dissolved in
In ethylene glycol, now, start to be passed through ammonia in toward polyester kettle, when temperature rises to 140-150 DEG C, there will be moisture boiling point alcohol by gathering
Ester kettle is risen in the first reflux condenser, and now the temperature control of the first reflux condenser at 120 DEG C or so, return by low boilers
Micro water vapor is cooled to water into receiver by the second reflux condenser in stream kettle, when temperature rises to 220 DEG C, can close
Resistance heater, while slightly big ammonia, make the temperature in polyester kettle it is constant reaction terminates in 220 DEG C, start vavuum pump,
Polyester kettle sample tap takes out polyurethane；
Second step：Performed polymer synthesizes, and prepares raw material and equipment, polyurethane, BDO, TDI, there-necked flask, weighs a certain amount of
Polyurethane in there-necked flask, be heated to 80 DEG C under agitation, add the BDO of metering, isothermal reaction 30min, then
Temperature is down to less than 50 DEG C, then adds TDI, and heating control naturally is reacted 1 hour at 90 DEG C, is finally sampled, is sealed；
3rd step：Polyurethane sealing ring is poured into a mould, and weighs a certain amount of performed polymer with porcelain enamel barrel, being warming up to 90 DEG C under agitation,
Be heated to 120 DEG C of vulcanizing agent, stirred 30-60s rapidly, be then poured into it is processed after the mould for being heated to 120 DEG C
In tool, gellation is grasped, matched moulds, vulcanizes 45min in 120 DEG C of pressure plare, molding, takes out product, trims flash, inspection
Look into, be 15h in 100 DEG C of after cure times.
2. according to a kind of production technology of casting type polyurethane sealing ring of claim 1, it is characterised in that the low boilers are returned
After micro water vapor is cooled to water into receiver by the second reflux condenser in stream kettle, and maintain the temperature at 150 DEG C of feelings
Reacted 2 hours under condition, temperature is then risen to 220 DEG C with 3- DEG C/10min speed.
3. according to a kind of production technology of casting type polyurethane sealing ring of claim 1, it is characterised in that the addition TDI,
When being reacted 1 hour at 90 DEG C, observe to come to nothing in there-necked flask to bubble-free effusion, reaction and terminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437624.3A CN107417880A (en) | 2017-06-12 | 2017-06-12 | A kind of production technology of casting type polyurethane sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437624.3A CN107417880A (en) | 2017-06-12 | 2017-06-12 | A kind of production technology of casting type polyurethane sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107417880A true CN107417880A (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710437624.3A Pending CN107417880A (en) | 2017-06-12 | 2017-06-12 | A kind of production technology of casting type polyurethane sealing ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117343529A (en) * | 2023-12-06 | 2024-01-05 | 无锡芯感智半导体有限公司 | Preparation method of sealing ring for MEMS thermal flow sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020082333A1 (en) * | 2000-09-13 | 2002-06-27 | Rudiger Herpich | Silica gel-containing rubber compounds with organosilicon compounds as compounding agent |
| CN101486890A (en) * | 2008-04-30 | 2009-07-22 | 上海工程技术大学 | Anstatic agent and antistatic urethane elastomer material thereof |
| CN105175674A (en) * | 2015-08-04 | 2015-12-23 | 航天材料及工艺研究所 | High hardness and high toughness polyurethane casting adhesive and application thereof |
| CN105283481A (en) * | 2012-12-19 | 2016-01-27 | 巴斯夫欧洲公司 | Hydrolysis-resistant polyurethane moulded articles made of polyester polyurethane |
-
2017
- 2017-06-12 CN CN201710437624.3A patent/CN107417880A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020082333A1 (en) * | 2000-09-13 | 2002-06-27 | Rudiger Herpich | Silica gel-containing rubber compounds with organosilicon compounds as compounding agent |
| CN101486890A (en) * | 2008-04-30 | 2009-07-22 | 上海工程技术大学 | Anstatic agent and antistatic urethane elastomer material thereof |
| CN105283481A (en) * | 2012-12-19 | 2016-01-27 | 巴斯夫欧洲公司 | Hydrolysis-resistant polyurethane moulded articles made of polyester polyurethane |
| CN105175674A (en) * | 2015-08-04 | 2015-12-23 | 航天材料及工艺研究所 | High hardness and high toughness polyurethane casting adhesive and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117343529A (en) * | 2023-12-06 | 2024-01-05 | 无锡芯感智半导体有限公司 | Preparation method of sealing ring for MEMS thermal flow sensor |
| CN117343529B (en) * | 2023-12-06 | 2024-02-20 | 无锡芯感智半导体有限公司 | Preparation method of sealing ring for MEMS thermal flow sensor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |