CN102504152A - Modified phenolic resin, preparation method and application thereof, and PCB (printed circuit board) drilling pad - Google Patents
Modified phenolic resin, preparation method and application thereof, and PCB (printed circuit board) drilling pad Download PDFInfo
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- CN102504152A CN102504152A CN2011103100239A CN201110310023A CN102504152A CN 102504152 A CN102504152 A CN 102504152A CN 2011103100239 A CN2011103100239 A CN 2011103100239A CN 201110310023 A CN201110310023 A CN 201110310023A CN 102504152 A CN102504152 A CN 102504152A
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Abstract
The invention discloses a modified phenolic resin, a preparation method and application of the modified phenolic resin, and a PCB (printed circuit board) drilling pad. The preparation method of the modified phenolic resin comprises the following steps of: feeding, heating up, maintaining, dehydrating under vacuum, and adding solvents and stirring to adjust viscosity of phenolic resin, wherein the preparation method of the modified phenolic resin further comprises the following step of: adding cashew nut shell oil into phenolic resin to modify phenolic resin after synthesis of phenolic resin and before vacuum dehydration. The pad made of the cashew nut shell oil-modified phenolic resin has moderate hardness, good smoothness and strong weathering resistance, and keeps unchanged in cold and dry winter and hot and humid summer. Besides, since the original hardness of phenolic resin is changed, during PCB drilling process, the friction temperature is reduced and the broken needle rate is reduced, as a result, the problems of hole offset and hole shift of PCB are greatly reduced, the work efficiency is increased, and the quality of PCB products is improved.
Description
Technical field
The present invention relates to field of printed circuit board fabrication, relate in particular to a kind of modified phenolic resins and preparation method thereof, application and PCB burr hole cover backing plate.
Background technology
PCB burr hole cover backing plate (hereinafter to be referred as backing plate) is quite big at PCB industry consumption, is the indispensable expendable sheet material of PCB industry.And it is very high at the quality requirements of PCB industry.All require quite strict like planeness, hardness, thickness deviation etc.Backing plate of the prior art mainly is that phenolic glue hot pressing forms, and the characteristics of resol are that the rigidity strong hardness is high, and the influence that receives temperature, atmospheric moisture is moisture absorption and deformation very easily, and thermal contraction is big, causes that the backing plate warpage is big, poor flatness.
PCB industry hardness generally all requires at 86 ~ 92 shore hardnesses, but the hardness of existing backing plate is high, and the heat that makes pcb board when punching, produce is high, to bit wear Da Yi broken needle.
The PCB industry is also very high to the planeness requirement of backing plate, and still existing backing plate poor flatness can not be combined closely with pcb board, when punching, is prone to cause askew hole of pcb board and broken needle.
Therefore, prior art awaits to improve and development.
Summary of the invention
In view of the deficiency of above-mentioned prior art, the object of the present invention is to provide a kind of modified phenolic resins and preparation method thereof, application and PCB backing plate, the snappiness that is intended to solve backing plate is poor, the problem of poor flatness.
Technical scheme of the present invention is following:
A kind of preparation method of modified phenolic resins comprises the process of the process of feeding intake, temperature-rise period, insulating process, vacuum hydro-extraction process and solubilizing agent stirring and adjusting resol viscosity, and wherein, the preparation method of said modified phenolic resins is further comprising the steps of:
In the synthetic back of resol, carry out vacuum hydro-extraction before, add cashew nut shell oil in the resol to, resol is carried out modification.
The preparation method of described modified phenolic resins, wherein, the adding proportion of said cashew nut shell oil is the 10--30%. of said modified phenolic resins gross weight
A kind of modified phenolic resins, wherein, the preparation method of said modified phenolic resins comprises the process of the process of feeding intake, temperature-rise period, insulating process, vacuum hydro-extraction process and solubilizing agent stirring and adjusting resol viscosity; Wherein, in the synthetic back of resol, carry out vacuum hydro-extraction before, add cashew nut shell oil in the resol to, resol is carried out modification.
The application of above-mentioned modified phenolic resins wherein, will be stated modified phenolic resins and be used for the manufacturing PCB drilling liner plate.
A kind of PCB drilling liner plate, wherein, said PCB drilling liner plate is to be prepared from modified phenolic resins;
Said modified phenolic resins is to prepare in the process at resol, adds cashew nut oil modified being prepared from; Said cashew nut shell oil is before the synthetic back of resol, dehydration, to add in the resol.
Beneficial effect: the backing plate hardness of processing with cashew nut oil modified resol is moderate; Good planeness; And weathering resistance is strong, is highly commended by customers deeply, has solved the problem that transportation, user use and deposit distortion; And do not receive the influence of winter low temperature drying and summer high temperature high humidity, the quality problems that occurred easily in all processes before having eliminated.Owing to changed the hardness of original resol, make PCB user when punching, reduce friction temperature simultaneously, reduced the broken needle rate, significantly reduced the askew hole and inclined to one side hole phenomenon of pcb board, improved the quality product of working efficiency and pcb board.
Description of drawings
Fig. 1 is the schema of the building-up process of modified phenolic resins among the present invention.
Embodiment
The present invention provides a kind of modified phenolic resins and preparation method thereof, application and PCB burr hole cover backing plate, and is clearer, clear and definite for making the object of the invention, technical scheme and effect, below to further explain of the present invention.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Modified phenolic resins provided by the present invention; Be through in resol, adding a kind of cashew nut shell oil, utilize the repellency of cashew nut shell oil strong, toughening effect is good, have the characteristic of quite high bond strength again, through mixed and modified method; Cashew nut shell oil is mixed with resol; Make modified phenolic resins, changed original hard, the crisp characteristic of resol, but kept certain rigidity again.
The preparation method of said modified phenolic resins also is provided among the present invention; Said modified phenolic resins building-up process is as shown in Figure 1; The process that comprises the process of feeding intake, temperature-rise period, insulating process, vacuum hydro-extraction process and solubilizing agent stirring and adjusting resol viscosity; The preparation method of above-mentioned resol is well known to those skilled in the art, and does not give unnecessary details at this.Main improvement of the present invention is, before the synthetic back of resol, dehydration, in reaction kettle, adds cashew nut shell oil, and resol is carried out modification.The addition of said cashew nut shell oil is the 10--30% of said modified phenolic resins gross weight.Before the synthetic back of resol, dehydration, cashew nut shell oil is added in the reaction kettle, purpose is that cashew nut shell oil is fully stirred under high-temperature vacuum, mixes with resol, thereby reaches toughness reinforcing best effect.
The application of said modified phenolic resins also is provided among the present invention, said modified phenolic resins is used to prepare the PCB drilling liner plate.Because said modified phenolic resins changed original hard, the crisp characteristic of resol, but kept certain rigidity again, the PCB drilling liner plate of processing being had have in tough has tough characteristic in hard, hard.
Said cashew nut shell oil has stronger repellency, after burr are fallen in the sawing of PCB drilling liner plate, has played and can stop airborne moisture to get in the sheet material, has prevented that sheet material is because of absorbing the buckling deformation that airborne moisture causes.Cashew nut shell oil has goodish toughening effect and antifatigue effect in addition, has again with the miscible characteristics of resol, therefore makes the PCB drilling liner plate have extraordinary weathering resistance, thereby has improved the planeness problem of PCB drilling liner plate.
The PCB drilling liner plate thickness that is used for the PCB punching is generally 0.5 ~ 1.5mm, and existing resol hardness height very easily is out of shape.Scold the strong and extraordinary again cashew nut shell oil of toughening effect of water electrode through in resol, adding among the present invention; Change the hardness of resol; Said modified phenolic resins is used to prepare the PCB drilling liner plate; Alleviate the bad yielding problem of planeness of PCB drilling liner plate, improved the quality product of PCB drilling liner plate, thereby satisfied user's request for utilization.
Embodiment 1
(1) process that feeds intake: raw material phenol, formaldehyde, aromatic hydrocarbon, oxalic acid and water are dropped into reactor drum and mixes, add catalyzer, stir;
(2) temperature-rise period: be heated to 55～65 ℃, exothermic heat of reaction makes material be warming up to boiling automatically;
(3) insulating process: continue heating and keep little boiling (96～98 ℃) to terminal;
(4) add cashew nut shell oil: in resol, add the cashew nut shell oil that accounts for modified phenolic resins weight 10%;
(5) vacuum hydro-extraction: vacuum removal moisture to resin moisture is about 5% under-0.092MPa condition;
(6) solubilizing agent stirring and adjusting resol viscosity to 180 ~ 240cps/25 ℃.
The modified phenolic resins that obtains is used to prepare the PCB drilling liner plate, below is the MV of the test statistics of a plurality of samples of preparing with aforesaid method, sees following numeral contrast for details.
The contrast of table 1 hardness numeral
Table 2 planeness contrast (angularity)
The quality improving of the cashew nut oil modified front and back of resol process is shown in table 1 and table 2; Through above numeral analyzing clearly; In resol, add cashew nut shell oil, changed the hardness of resol, alleviated the bad yielding problem of planeness of PCB drilling liner plate; Improve the quality product of PCB drilling liner plate, can satisfy the request for utilization of high-end user fully.
Embodiment 2
The preparation method of said modified phenolic resins is similar with embodiment 1, and difference is that the addition of cashew nut shell oil is 15% of a modified phenolic resins gross weight.
The modified phenolic resins that obtains is used to prepare the PCB drilling liner plate, below is the MV of the test statistics of a plurality of samples of preparing with aforesaid method, sees following numeral contrast for details.
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The contrast of table 3 hardness numeral
Table 4 planeness contrast (angularity)
The quality improving of the cashew nut oil modified front and back of resol process is shown in table 3 and table 4; Through above numeral analyzing clearly; In resol, add cashew nut shell oil, changed the hardness of resol, alleviated the bad yielding problem of planeness of PCB drilling liner plate; Improve the quality product of PCB drilling liner plate, can satisfy the request for utilization of high-end user fully.
Embodiment 3
The preparation method of said modified phenolic resins is similar with embodiment 1, and difference is that the addition of cashew nut shell oil is 30% of a modified phenolic resins gross weight.
The modified phenolic resins that obtains is used to prepare the PCB drilling liner plate, below is the MV of the test statistics of a plurality of samples of preparing with aforesaid method, sees following numeral contrast for details.
The contrast of table 5 hardness numeral
Table 6 planeness contrast (angularity)
The quality improving of the cashew nut oil modified front and back of resol process is shown in table 5 and table 6; Through above numeral analyzing clearly; In resol, add cashew nut shell oil, changed the hardness of resol, alleviated the bad yielding problem of planeness of PCB drilling liner plate; Improve the quality product of PCB drilling liner plate, can satisfy the request for utilization of high-end user fully.
The PCB drilling liner plate hardness of processing with cashew nut oil modified resol is moderate; Good planeness; And weathering resistance is strong, is highly commended by customers deeply, has solved the problem that transportation, user use and deposit distortion; And do not receive the influence of winter low temperature drying and summer high temperature high humidity, the quality problems that occurred easily in all processes before having eliminated.Owing to changed the hardness of original resol, make PCB user when punching, reduce friction temperature simultaneously, reduced the broken needle rate, significantly reduced the askew hole and inclined to one side hole phenomenon of PCB drilling liner plate, improved the quality product of working efficiency and PCB drilling liner plate.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, concerning those of ordinary skills, can improve or conversion that all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention according to above-mentioned explanation.
Claims (5)
1. the preparation method of a modified phenolic resins; The process that comprises the process of feeding intake, temperature-rise period, insulating process, vacuum hydro-extraction process and solubilizing agent stirring and adjusting resol viscosity; It is characterized in that the preparation method of said modified phenolic resins is further comprising the steps of:
In the synthetic back of resol, carry out vacuum hydro-extraction before, add cashew nut shell oil in the resol to, resol is carried out modification.
2. the preparation method of modified phenolic resins according to claim 1 is characterized in that, the adding proportion of said cashew nut shell oil is the 10--30% of said modified phenolic resins gross weight.
3. a modified phenolic resins is characterized in that, the preparation method of said modified phenolic resins comprises the process of the process of feeding intake, temperature-rise period, insulating process, vacuum hydro-extraction process and solubilizing agent stirring and adjusting resol viscosity; Wherein, in the synthetic back of resol, carry out vacuum hydro-extraction before, add cashew nut shell oil in the resol to, resol is carried out modification.
4. the application of a modified phenolic resins as claimed in claim 3 is characterized in that, will state modified phenolic resins and be used for the manufacturing PCB drilling liner plate.
5. a PCB drilling liner plate is characterized in that, said PCB drilling liner plate is to be prepared from modified phenolic resins;
Said modified phenolic resins is to prepare in the process at resol, adds cashew nut oil modified being prepared from; Said cashew nut shell oil is before the synthetic back of resol, dehydration, to add in the resol.
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| CN2011103100239A CN102504152A (en) | 2011-10-13 | 2011-10-13 | Modified phenolic resin, preparation method and application thereof, and PCB (printed circuit board) drilling pad |
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| CN2011103100239A CN102504152A (en) | 2011-10-13 | 2011-10-13 | Modified phenolic resin, preparation method and application thereof, and PCB (printed circuit board) drilling pad |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085428A (en) * | 2012-12-12 | 2013-05-08 | 湖南柳鑫电子新材料有限公司 | Melamine board for printed circuit board (PCB) drilling and preparation method thereof |
| CN103950057A (en) * | 2014-04-22 | 2014-07-30 | 深圳市柳鑫实业有限公司 | Laminating base plate for boring and preparing method thereof |
| CN105885531A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | Heat-resisting fast-drying printing ink |
| CN105885532A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | High-performance printing ink |
| CN117402307A (en) * | 2023-12-15 | 2024-01-16 | 山东永创材料科技有限公司 | Biomass oil modified phenolic resin and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085428A (en) * | 2012-12-12 | 2013-05-08 | 湖南柳鑫电子新材料有限公司 | Melamine board for printed circuit board (PCB) drilling and preparation method thereof |
| CN103085428B (en) * | 2012-12-12 | 2015-05-20 | 湖南柳鑫电子新材料有限公司 | Melamine board for printed circuit board (PCB) drilling and preparation method thereof |
| CN103950057A (en) * | 2014-04-22 | 2014-07-30 | 深圳市柳鑫实业有限公司 | Laminating base plate for boring and preparing method thereof |
| CN105885531A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | Heat-resisting fast-drying printing ink |
| CN105885532A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | High-performance printing ink |
| CN117402307A (en) * | 2023-12-15 | 2024-01-16 | 山东永创材料科技有限公司 | Biomass oil modified phenolic resin and preparation method thereof |
| CN117402307B (en) * | 2023-12-15 | 2024-02-09 | 山东永创材料科技有限公司 | Biomass oil modified phenolic resin and preparation method thereof |
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Application publication date: 20120620 |