CN203916649U - A kind of thermosensitive type polyurethane pouring sealant preparation facilities - Google Patents
A kind of thermosensitive type polyurethane pouring sealant preparation facilities Download PDFInfo
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- CN203916649U CN203916649U CN201420203769.9U CN201420203769U CN203916649U CN 203916649 U CN203916649 U CN 203916649U CN 201420203769 U CN201420203769 U CN 201420203769U CN 203916649 U CN203916649 U CN 203916649U
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Abstract
The utility model relates to a kind of preparation facilities of thermosensitive type polyurethane pouring sealant, comprise A component preparation facilities, B component preparation facilities and blending tank, A component preparation facilities is identical with the structure of B component preparation facilities, A component preparation facilities or B component preparation facilities comprise reactor, condenser (4), surge tank (5) and feed pot, the feed pot output mouth of pipe is connected with reactor (1), the output mouth of pipe of reactor (1) is connected with the input port of condenser by riser, riser is composed in series by the first riser and the second riser, between condenser (4) and surge tank (5), be connected distillation and reflux common conduit (51), between distillation and reflux common conduit (51) and the first riser (2), be connected reflux line (7), surge tank (5) is communicated with whole reaction system and is connected with atmospheric environment by balance pipe (52) with holding vessel, surge tank (5) is connected with vacuum tube (53), surge tank (5) output port is connected with blending tank by pipeline.
Description
Technical field
The utility model relates to a kind of thermosensitive type polyurethane pouring sealant preparation facilities.
Background technology
In electron trade, many materials all need to carry out embedding, embedding be exactly all parts that forms electronic device or integrated circuit in accordance with regulations require reasonable Arrangement, assembling, connection, thereby make it to obtain with environment isolation the technique of protection.Play and prevent the erosion to electronic device or integrated circuit of moisture, dust and pernicious gas, slowing down vibration, prevent external force damage, the effects such as stable electrical sub-element, are widely used in LED, capacitor, integrated circuit, large scale integrated circuit, printed circuit board (PCB), automobile electronics, automotive wire bundle, connector, sensor aspect.Because most embedding is all non-removable, scrapping of product just meaned in the failure of encapsulation, has influence on the cost of goods.At present, the research and development of electronic encapsulation material are subject to great attention both domestic and external.
Embedding Material mainly contains epoxy resin, organosilicon and polyurethane three major types at present:
(1) epoxy resin embedding adhesive is mainly made up of epoxy resin, curing agent, curing accelerator, filler, lubricant, pigment and other auxiliary agent.Epoxy resin reacts and belongs to addition polymerization with curing agent, there is no accessory substance, general shrinkage factor is smaller, cured product has good heat resistance, electrical insulation capability, sealing and dielectric properties, can meet the requirement of general electronics, electrical apparatus insulation material, select different curing agent and promoter, can prepare the casting glue of different performance, can meet the different needs.Epoxy resin casting glue is mainly in the embedding of the aspects such as electric power mutual-inductor, transformer, insulator, electronic device, integrated circuit, semiconductor element, wiring board, copper-clad plate, electronic apparatus, high-tension insulator plug, high-voltage large current switch.But epoxy resin itself exists a large amount of rigid radicals, the shortcoming such as in use have that hardness is large, easily embrittlement, resistance to low temperature are poor, can not repair, package temperature is had relatively high expectations, has limited its scope of application;
(2) silicone based casting glue has excellent stability, can in wider temperature, humidity range, keep good mechanics and electric property, silicon rubber also has good anti-ozone and the characteristic of ultraviolet ray ageing in addition, and chemical stability preferably.Silicone based casting glue can be divided into two kinds of condensed type and add-on types by its mechanism of crosslinking, wherein condensed type organic silicon potting adhesive operable time still can, but viscosity is large, lower hardness; Additional organosilicon class casting glue viscosity is low, hardness is high, but operable time is short.At present, conventional silicone based casting glue mostly is add-on type both at home and abroad, under the effect of platinum, palladium series catalyst, make the organosiloxane that contains si-h bond (Si-H) by addition reaction curing molding, but the adhesive property of this kind of silicone based casting glue and other material is poor, the catalyst platinum that solidifies use is very responsive to impurity, and operable time is short, is difficult to meet the embedding of complex shapes;
(3) embedding of polyurethanes casting glue mainly forms end isocyano prepolymer by polyisocyanates and polyalcohol through polymerization progressively, in the situation that catalyst exists, adopts little molecular polylol, the further crosslinking curing of polyamine, formation high polymer.Material has better water resistance, resistance to low temperature, anti-seismic performance, insulating properties and fire resistance, corrosion-free to electric elements, and various metals, nonmetallic materials are had to good adhesive property.The hardness of polyurethane pouring sealant can regulate by the ratio of polyisocyanates and PPG in addition, and viscosity can be controlled by the selection of the selection of polyalcohol and catalyst.Three kinds of Embedding Materials of Comprehensive Correlation, wherein epoxy resin casting glue low price, adhesive property excellence, electrical insulating property are good, but low temperature flexibility is poor, weatherability is poor, shrinkage factor is large; Silicone based casting glue good flame resistance, resistant of high or low temperature excellence, but price is high, electrical insulating property is poor; Polyurethanes casting glue combines the advantage of epoxy resin and silicone based casting glue, and soft durometer, curing rate are adjustable, and range of application is more extensive.
Polyurethanes casting glue is of a great variety in the market, and price variance is also very large, and quality is also uneven, and common polyurethane pouring sealant exists the problem of the aspects such as operable time is short, not environmental protection, poor fire, viscosity height mostly in the market.
Utility model content
The utility model has designed a kind of thermosensitive type polyurethane pouring sealant preparation facilities, the technical problem of its solution is polyurethanes casting glue process units can not fine removal gaseous state in the market compound and liquid micromolecular compound, has caused polyurethanes casting glue quality uneven.
In order to solve the technical problem of above-mentioned existence, the utility model has adopted following scheme:
A kind of thermosensitive type polyurethane pouring sealant preparation facilities, it is characterized in that: comprise A component preparation facilities, B component preparation facilities and blending tank, B component prepared by A component prepared by A component preparation facilities and B component preparation facilities enters into blending tank deaeration jointly, A component preparation facilities is identical with the structure of B component preparation facilities, A component preparation facilities or B component preparation facilities comprise reactor (1), condenser (4), surge tank (5) and feed pot (6), feed pot (6) the output mouth of pipe is connected with reactor (1), the output mouth of pipe of reactor (1) is connected with the input port of condenser (4) by riser, riser is composed in series by the first riser (2) and the second riser (3), between condenser (4) and surge tank (5), be connected distillation and reflux common conduit (51), between distillation and reflux common conduit (51) and the first riser (2), be connected reflux line (7), surge tank (5) is communicated with whole reaction system and is connected with atmospheric environment by balance pipe (52) with holding vessel, surge tank (5) is connected with vacuum tube (53), surge tank (5) output port is connected with blending tank by pipeline.
Further, distillation and reflux common conduit (51) is provided with the first valve (54), and reflux line (7) one end is connected in the distillation and reflux common conduit (51) between the first valve (54) and condenser (4); In reflux line (7), form hydraulic fluid U-shaped pipe (71), hydraulic fluid U-shaped pipe (71) is a linker, linker upper end open height difference, high opening is connected with distillation and reflux common conduit (51), and low opening is connected with the first riser (2).
Further, condenser is provided with chuck in (4), and chuck one end is connected with water inlet pipe (41), and the chuck other end is connected with outlet pipe (42).
Further, the second riser (3) one end is connected with condenser (4), the second riser (3) is also provided with chuck, and its chuck one end is connected with water inlet pipe (31), and its chuck other end is connected with outlet pipe (32).
Further, the second riser (3) is also provided with thermometer with condenser (4) junction.
Further, on reactor (1) kettle cover, have in multiple interfaces and still and communicate.
This thermosensitive type polyurethane pouring sealant preparation facilities has following beneficial effect:
(1) the utility model, owing to being provided with reflux line, can be back to liquid micromolecular compound further reaction in reactor, improves the purity of liquid A component or B component.
(2) the utility model, owing to being provided with balance pipe, can enter into storage tank by balance pipe parts by the compound of a small amount of gaseous state and store, and improves the purity of liquid A component or B component.
(3) the utility model is owing to being also provided with condensing unit in the second riser, thereby can further improve condensation effect, improves reaction transformation efficiency.
Brief description of the drawings
Fig. 1: the utility model thermosensitive type polyurethane pouring sealant preparation facilities structural representation;
Description of reference numerals:
1-reactor; 2-the first riser; 3-the second riser; 31-water inlet pipe; 32-outlet pipe; 4-condenser; 41-water inlet pipe; 42-outlet pipe; 5-surge tank; 51-distillation and reflux common conduit; 52-balance pipe; 53-vacuum tube; 54-the first valve; 6-feed pot; 7-reflux line; 71-hydraulic fluid U-shaped pipe; 72-the second valve.
Detailed description of the invention
Below in conjunction with Fig. 1, the utility model is described further:
The utility model thermosensitive type polyurethane pouring sealant preparation facilities, comprise A component preparation facilities, B component preparation facilities and blending tank, B component prepared by A component prepared by A component preparation facilities and B component preparation facilities enters into blending tank deaeration jointly, A component preparation facilities is identical with the structure of B component preparation facilities, A component preparation facilities or B component preparation facilities comprise reactor 1, condenser 4, surge tank 5 and feed pot 6, feed pot 6 is exported the mouth of pipe and is connected with reactor 1, the output mouth of pipe of reactor 1 is connected with the input port of condenser 4 by riser, riser is composed in series by the first riser 2 and the second riser 3, between condenser 4 and surge tank 5, be connected distillation and reflux common conduit 51, between distillation and reflux common conduit 51 and the first riser 2, be connected reflux line 7, surge tank 5 is communicated with holding vessel by balance pipe 52, surge tank 5 is also connected with vacuum tube 53.Distillation and reflux common conduit 51 is provided with the first valve 54, and reflux line 7 one end are connected in the distillation and reflux common conduit 51 between the first valve 54 and condenser 4; In reflux line 7, form hydraulic fluid U-shaped pipe 71, hydraulic fluid U-shaped pipe 71 is a linker, linker upper end open height difference, and high opening is connected with distillation and reflux common conduit 51, and low opening is connected with the first riser 2.In condenser 4, be provided with chuck, chuck one end is connected with water inlet pipe 41, and the chuck other end is connected with outlet pipe 42.Second riser 3 one end are connected with condenser 4, and the second riser 3 is also provided with chuck, and its chuck one end is connected with water inlet pipe 31, and its chuck other end is connected with outlet pipe 32.The second riser 3 is also provided with thermometer with condenser 4 junctions.On reactor 1 kettle cover, have in multiple interfaces and still and communicate.
Thermosensitive type polyurethane pouring sealant prepared by the utility model is made up of A, B two components, and its preparation process is as follows:
Step 1, A component preparation: first by large molecule polyethers, PEPA, functionalised polyethers vacuum dehydration 2h at 100-120 DEG C in reactor 1, then cool between 40-50 DEG C and add polyisocyanate component, under nitrogen protection, in 70-90 DEG C of reaction 3-4h, cooling obtains isocyanate terminated polyurethane prepolymer; Finally add defoamer, fire retardant to mix, logical nitrogen encapsulation, obtains A component.A component more successively after the first riser 2, the second riser 3 and condenser 4 are processed A component macromolecular compound enter into surge tank 5 storages, micromolecular compound is come back in reactor 1 and is again processed by reflux line 7.The compound of processing through condenser 4 is that gas-liquid is cooled to liquid, be back in reactor 1, or distillation is in surge tank 5.Entering into storage tank if any the compound of a small amount of gaseous state by balance pipe 52 parts stores.Whole device joins with atmosphere by balance pipe 52, surge tank 5, vacuum tube 53, ensures that in course of reaction be atmospheric pressure state.
Step 2, the preparation of B component: functionalised polyethers, polyisocyanates 70-90 DEG C reaction 2 hours, cooling obtains isocyanate terminated polyurethane prepolymer, 40 DEG C of amido catalyst reactions that add the intermediate molecular weight such as imidazoles 0.5 hour, obtain thermosensitive type catalyst, by itself and little molecular polylol/polyamine vacuum dehydration 2h at 110-120 DEG C, cooling, mixes rear logical nitrogen encapsulation, obtains B component.B component more successively after the first riser 2, the second riser 3 and condenser 4 are processed B component macromolecular compound enter into surge tank 5 storages, micromolecular compound is come back in reactor 1 and is again processed by reflux line 7.The compound of processing through condenser 4 is that gas-liquid is cooled to liquid, be back in reactor 1, or distillation is in surge tank 5.Entering into storage tank if any the compound of a small amount of gaseous state by balance pipe 52 parts stores.Whole device joins with atmosphere by balance pipe 52, surge tank 5, vacuum tube 53, ensures that in course of reaction be atmospheric pressure state.
A, B component can be prepared by the preparation facilities of the utility model thermosensitive type polyurethane pouring sealant component.
Step 3, A, B component are mixed by certain mass ratio, then be placed in closed container, deaeration 5～10min at 20～35 DEG C, then adopts the casting glue preparing injection moulding moulding by casting technology to be poured into and treats on embedding part, and 24h can become thermosensitive type polyurethane pouring sealant by rapid curing.
Finally make thermosensitive type polyurethane pouring sealant, make goods there is following characteristic: 1. thermal sensitivity, under normal temperature, there is low activity, ensure the mobility of normal temperature excellence and longer open hour, curing rate is regulated by temperature, in the time being heated to assigned temperature, solidify rapidly, goods can be used for the part with complicated structure embedding, shorten element high temperature and born the time, avoid element fire damage, shortened operating procedure, improved production efficiency; 2. the feature of environmental protection, ensureing, on the basis of thermosensitive type polyurethane pouring sealant combination property, to adopt environmental type raw material, does not add plasticizer with meet the requirement of environmental protection, and goods are by ROSH, SGS certification; 3. anti-flammability, on the basis of combination property that ensures thermosensitive type polyurethane pouring sealant, flame retardant effect excellence, fire-retardantly tests by UL94-V0 vertical combustion; 4. shock resistance, by the selection of polyisocyanates and polyalcohol, the product of the good toughness of system, goods have excellent anti-seismic performance, and embedding element is played a protective role.Make goods and have longer operable time and excellent mobility, the performances such as excellent water-fast, fire-retardant, environmental protection, antidetonation, have higher using value.
By reference to the accompanying drawings the utility model is carried out to exemplary description above; obvious realization of the present utility model is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present utility model and technical scheme to carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all in protection domain of the present utility model.
Claims (6)
1. a thermosensitive type polyurethane pouring sealant preparation facilities, it is characterized in that: comprise A component preparation facilities, B component preparation facilities and blending tank, B component prepared by A component prepared by A component preparation facilities and B component preparation facilities enters into blending tank deaeration jointly, A component preparation facilities is identical with the structure of B component preparation facilities, A component preparation facilities or B component preparation facilities comprise reactor (1), condenser (4), surge tank (5) and feed pot (6), feed pot (6) the output mouth of pipe is connected with reactor (1), the output mouth of pipe of reactor (1) is connected with the input port of condenser (4) by riser, riser is composed in series by the first riser (2) and the second riser (3), between condenser (4) and surge tank (5), be connected distillation and reflux common conduit (51), between distillation and reflux common conduit (51) and the first riser (2), be connected reflux line (7), surge tank (5) is communicated with whole reaction system and is connected with atmospheric environment by balance pipe (52) with holding vessel, surge tank (5) is connected with vacuum tube (53), surge tank (5) output port is connected with blending tank by pipeline.
2. thermosensitive type polyurethane pouring sealant preparation facilities according to claim 1, it is characterized in that: distillation and reflux common conduit (51) is provided with the first valve (54), reflux line (7) one end is connected in the distillation and reflux common conduit (51) between the first valve (54) and condenser (4); In reflux line (7), form hydraulic fluid U-shaped pipe (71), hydraulic fluid U-shaped pipe (71) is a linker, linker upper end open height difference, high opening is connected with distillation and reflux common conduit (51), and low opening is connected with the first riser (2).
3. thermosensitive type polyurethane pouring sealant preparation facilities according to claim 2, is characterized in that: condenser is provided with chuck in (4), chuck one end is connected with water inlet pipe (41), and the chuck other end is connected with outlet pipe (42).
4. thermosensitive type polyurethane pouring sealant preparation facilities according to claim 3, it is characterized in that: the second riser (3) one end is connected with condenser (4), the second riser (3) is also provided with chuck, its chuck one end is connected with water inlet pipe (31), and its chuck other end is connected with outlet pipe (32).
5. according to thermosensitive type polyurethane pouring sealant preparation facilities described in any one in claim 1-4, it is characterized in that: the second riser (3) is also provided with thermometer with condenser (4) junction.
6. according to thermosensitive type polyurethane pouring sealant preparation facilities described in any one in claim 1-4, it is characterized in that: on reactor (1) kettle cover, have in multiple interfaces and still and communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420203769.9U CN203916649U (en) | 2014-04-25 | 2014-04-25 | A kind of thermosensitive type polyurethane pouring sealant preparation facilities |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420203769.9U CN203916649U (en) | 2014-04-25 | 2014-04-25 | A kind of thermosensitive type polyurethane pouring sealant preparation facilities |
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| CN203916649U true CN203916649U (en) | 2014-11-05 |
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| CN201420203769.9U Expired - Fee Related CN203916649U (en) | 2014-04-25 | 2014-04-25 | A kind of thermosensitive type polyurethane pouring sealant preparation facilities |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104766918A (en) * | 2015-04-07 | 2015-07-08 | 湖北匡通电子股份有限公司 | Technology and device for carrying out SMD LED mold casting packaging by means of liquid epoxy resin |
| CN104984704A (en) * | 2014-12-17 | 2015-10-21 | 江西腾德实业有限公司 | Power transformation equipment double-component casting material synchronization preparation system and power transformation equipment double-component casting material synchronization preparation method |
| CN105153988A (en) * | 2015-09-30 | 2015-12-16 | 安徽省思维新型建材有限公司 | Production device and production method for double-component polyurethane adhesive |
| CN106057689A (en) * | 2016-06-01 | 2016-10-26 | 东莞兆舜有机硅科技股份有限公司 | Integral glue-pouring process for heat-conducting and flame-retardant material |
| CN107057628A (en) * | 2017-02-15 | 2017-08-18 | 绵阳惠利电子材料有限公司 | The transparent polyurethane casting glue and its preparation and application of nonmetal catalyzed solidification |
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2014
- 2014-04-25 CN CN201420203769.9U patent/CN203916649U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984704A (en) * | 2014-12-17 | 2015-10-21 | 江西腾德实业有限公司 | Power transformation equipment double-component casting material synchronization preparation system and power transformation equipment double-component casting material synchronization preparation method |
| CN104766918A (en) * | 2015-04-07 | 2015-07-08 | 湖北匡通电子股份有限公司 | Technology and device for carrying out SMD LED mold casting packaging by means of liquid epoxy resin |
| CN104766918B (en) * | 2015-04-07 | 2016-01-20 | 湖北匡通电子股份有限公司 | A kind of utilize liquid-state epoxy resin carry out SMD LED mould note encapsulation technique and device |
| CN105153988A (en) * | 2015-09-30 | 2015-12-16 | 安徽省思维新型建材有限公司 | Production device and production method for double-component polyurethane adhesive |
| CN105153988B (en) * | 2015-09-30 | 2017-06-30 | 安徽省思维新型建材有限公司 | The process units and its production method of a kind of two-component polyurethane adhesive |
| CN106057689A (en) * | 2016-06-01 | 2016-10-26 | 东莞兆舜有机硅科技股份有限公司 | Integral glue-pouring process for heat-conducting and flame-retardant material |
| CN106057689B (en) * | 2016-06-01 | 2019-06-07 | 东莞兆舜有机硅科技股份有限公司 | The whole process for filling colloid of heat conductive flame-retarding material |
| CN107057628A (en) * | 2017-02-15 | 2017-08-18 | 绵阳惠利电子材料有限公司 | The transparent polyurethane casting glue and its preparation and application of nonmetal catalyzed solidification |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20160425 |