CN1458216A - Sealing wax for electronic element coil - Google Patents
Sealing wax for electronic element coil Download PDFInfo
- Publication number
- CN1458216A CN1458216A CN 02109662 CN02109662A CN1458216A CN 1458216 A CN1458216 A CN 1458216A CN 02109662 CN02109662 CN 02109662 CN 02109662 A CN02109662 A CN 02109662A CN 1458216 A CN1458216 A CN 1458216A
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- Prior art keywords
- wax
- sealing
- tackifier
- described sealing
- macromolecule
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Abstract
The present invention relates to a kind of electronic element sealing wax composite comprising petroleum wax, polymer wax, tackifier and plasticizer. The sealing wax has the features of high dropping point, excellent high temperature performance, good plasticity and flexibility, excellent electric performance, powerful sealing force, short solidification time, no corrosion, no impurity, etc., and has the sealing cost lower than available sealing material with resin as main component. The sealing wax is suitable for positioning and sealing electronic tuner, inductance coil and other electronic element coil.
Description
1, technical field
The present invention relates to a kind of Wax composition, relate in particular to a kind of sealing wax composition, particularly be applicable to the sealing wax composition of electronic tuning unit and other electron component coil location and sealing.
2, background technology
In the automatic waxing and manual some wax two procedures of production of electronic components processes such as electronic tuning unit, require to use material for sealing to fix air core coil, with the inductance value of accurate debugging air core coil.Common paraffin or the Microcrystalline Wax of simple use, advantage is their low prices, but has defectives such as high-temperature behavior and toughness plasticity difference, under working temperature, easily run off, and easy under external force disruptive problem, the inductance value of complete machine is changed.And use resene sealing material, advantage is that high-temperature behavior is good, but has defectives such as toughness plasticity difference and cost height, can not adapt to current market competition to requirement cheaply.It all is main component with the resin with material that existing patent is introduced the special-purpose coil sealing of electronic component location, as: all adopt the resin package coil in the molding method of patent introductions such as US 4115175, US 5656350, this material for sealing cost is higher, in face of the situation of current electron trade cut-throat competition, be difficult to adapt to the actual requirement of market competition.
3, summary of the invention
At the deficiencies in the prior art, the invention provides a kind of melt drop temperature height, high-temperature behavior excellence, plasticity and flexibility is good, electrical property is good, sealing power is strong, set time is short, free from corrosion sealing wax composition.
Sealing wax of the present invention comprises by weight:
A) 50～90% petroleum wax, dropping point are about 65～85 ℃;
B) 1～10% macromolecule wax, macromolecule wax are selected from low-molecular-weight polyethylene wax, byproduct polyethylene and expense-holder synthetic wax;
C) 5～40% tackifier, tackifier are selected from aromatic hydrocarbon resin and their modifier and hydrogenated derivatives, rosin and Abietyl modified thing and derivative, terpenes and terpene modified thing and derivative;
D) 1～20% softening agent, softening agent is selected from dioctyl phthalate (DOP), polyisobutene, aromatic hydrocarbon oil, or their mixture.
Sealing wax of the present invention has following advantage:
1, have higher melt drop temperature, the high-temperature behavior excellence is not also softened under higher working temperature, is not trickled;
2, have good plasticity and flexibility, the coil that can protect electronic component is when debugging and use, and fixed action is unaffected;
3, have good electrical insulation properties and moisture resistance, guaranteed the stable of electronic component electrical property;
4, no burn into inclusion-free can not produce detrimentally affect to electronic component;
5, nontoxic, free from extraneous odour can not cause damage to the healthy of Manufacturing Worker;
6, product is main raw material with the petroleum wax, and cost is low, and the market competitiveness is strong.
4, embodiment
In order to make sealing wax have good use properties, and have price advantage, having selected following material is raw material:
A) select for use have electrical property, moistureproofness is good and hardness, viscosity are suitable, and thermosetting material---petroleum wax is as body material.
B) select macromolecule wax for use, to improve the resistance to elevated temperatures of sealing wax.
C) select tackifier for use, to guarantee that sealing wax after liquid phase transfers solid phase to, has suitable cohesive strength.
D) select softening agent for use, make the easy fusion of sealing wax, easily soak into electronical elements surface, improve the solid wax hardness and the toughness plasticity of sealing wax.
Petroleum wax dropping point wherein is about 65～85 ℃, and alternative petroleum wax comprises: 85
#Microcrystalline Wax (deriving from the Nanyang refinery), 80
#Microcrystalline Wax (deriving from Nanchong refinery, Jingmen refinery etc.), 75
#Microcrystalline Wax (deriving from Nanchong refinery, Jingmen refinery, Jinzhou refinery etc.).The use range of these petroleum waxes in sealing wax of the present invention is about 50～90%, preferably is about 70～80%.
The macromolecule wax that is used for the present invention is low-molecular-weight polyethylene wax, byproduct polyethylene and expense-holder synthetic wax, and its molecular-weight average is about 1000～10000.The available macromolecule wax comprises: macromolecule wax L-913 and L-912 (deriving from second auxiliary factory, Beijing), 90
#Synthetic Microcrystalline Wax (deriving from Jinzhou refinery).The use range of these macromolecule wax is about 1～10% (weight), preferably is about 1～6% (weight).
Be used for tackifier of the present invention and be selected from aromatic hydrocarbon resin and their modifier and hydrogenated derivatives, rosin and Abietyl modified thing and derivative, terpenes and terpene modified thing and derivative, its ring and ball softening point are about 65～120 ℃.Tackifier used among the present invention comprise: staybelite, polymerized rosin, aromatic hydrocarbon resin (derive from strain state Lin Huachang, waste river, Wuzhou chemical industry company limited, Jiangxi recommend properly qualified persons for service resin processing plant).The used use range of tackifier in sealing wax of the present invention is about 5～40% (weight), preferably is about 10～20% (weight).
The molecular-weight average that is used for softening agent of the present invention is preferably 300～30000, and consumption is preferably 2～15%.
Sealing wax of the present invention is under about 110～140 ℃ temperature, adds the wax liquid that raw material and mixed melting become homogeneous transparent according to the order of sequence, moulding after filtering.By the sealing wax that technology of the present invention is made, of light color, good luster does not have mechanical impurity, has good use properties.
The performance index of sealing wax of the present invention are: melt drop temperature is about 85～95 ℃, and ring and ball softening point is not less than 82 ℃, and the penetration degree under 25 ℃ is about 20～25 1/10mm, and specific inductivity is about 2.1～2.6, and volume specific resistance is not less than 1 * 10
15Ω cm does not have mechanical impurity, non-corrosiveness.
Specifically introduce the composition and the performance of sealing wax of the present invention below by embodiment.
Embodiment: (following all expressions by weight percentage)
Test method
Following test method is the method for used in an embodiment general test used in electronic industry wax.
Melt drop temperature GB/T 8036
Softening temperature GB/T 4507
Penetration degree GB/T 4985
Mechanical impurity GB/T 511
Corrosion test GB/T 5096
Specific inductivity GB/T 1409
Volume specific resistance GB/T 1410
The preparation of the sealing wax of the embodiment 1,2,3,4,5 among the present invention is under about 110～140 ℃ temperature, adds the wax liquid that raw material and mixed melting become homogeneous transparent according to the order of sequence, after filtering cooling forming.
Embodiment 6 is a kind of typical import material for sealing.
Embodiment 1
80
#Microcrystalline Wax, 82.4 ℃ of (Nanchong refinerys) 76% of dropping point
Macromolecule wax L-912, molecular-weight average 3000 (second auxiliary factory, Beijing) 1%
Polymerized rosin, 100 ℃ of (waste river, Wuzhou chemical industry company limiteds) 20% of ring and ball softening point
Polyisobutene, molecular-weight average 20000 (Jinzhou refinery) 3%
Embodiment 2
80
#Microcrystalline Wax (Nanchong refinery) 80%
Macromolecule wax L-913, molecular-weight average 1000 (second auxiliary factory, Beijing) 4%
Staybelite, 80 ℃ of (strain state woodsization factories) 13% of ring and ball softening point
Polyisobutene, molecular-weight average 25000 (Jinzhou refinery) 3%
Embodiment 3
80
#Microcrystalline Wax, 81.6 ℃ of (Jingmen refinerys) 73% of dropping point
Macromolecule wax L-913 (second auxiliary factory, Beijing) 5%
Staybelite (strain state woodsization factory) 10%
Polyisobutene, molecular-weight average 1000 (Lanzhou oil-refining chemical head factory) 12%
Embodiment 4
80
#Microcrystalline Wax (Nanchong refinery) 78%
Macromolecule wax L-913 (second auxiliary factory, Beijing) 2%
Aromatic hydrocarbon resin, 90 ℃ of ring and ball softening points (Jiangxi recommend properly qualified persons for service resin processing plant) 10%
Dioctyl phthalate (DOP) (Shanghai reagent one factory) 10%
Embodiment 5
80
#Microcrystalline Wax (Jingmen refinery) 74%
Macromolecule wax L-913 (second auxiliary factory, Beijing) 4%
Staybelite (strain state woodsization factory) 12%
The test-results of dioctyl phthalate (DOP) (Shanghai reagent one factory) 10% embodiment sees Table 1.
Table 1 test-results embodiment 123456 melt drop temperature, ℃ 89.2 88.4 89.6 87.8 88.3 87.6 softening temperatures (ring and ball method), ℃ 87.6 86.7 88.0 86.2 86.9 83.0 penetration degrees (25 ℃), 21 22 20 25 24 19 mechanical impuritys do not have no corrosion test (100 qualified qualified ℃ of copper sheets, 3h) specific inductivity 2.3 2.3 2.3 2.3 2.3 2.2 volume specific resistances, (normal temperature) 3.39 * 10
153.46 * 10
153.40 * 10
152.62 * 10
151.96 * 10
155.50 * 10
14
As can be seen from Table 1, melt drop temperature and the softening temperature of sealing wax embodiment 1,2,3,4,5 of the present invention all are higher than the import sample, illustrate that the elevated temperature heat performance of sealing wax of the present invention is better than the import sample; Specific inductivity and the volume specific resistance of sealing wax embodiment 1,2,3,4,5 of the present invention all are higher than the import sample, illustrate that the electrical property of sealing wax of the present invention is better than the import sample; In addition, the penetration degree wider distribution of sealing wax embodiment 1,2,3,4,5 of the present invention illustrates that the hardness of sealing wax of the present invention can better satisfy the actual requirement of various coil production technologies than import wax.
Claims (9)
1, a kind of electronic component sealing wax comprises following material by weight:
Petroleum wax 50～90%
Macromolecule wax 1～10%
Tackifier 5～40%
Softening agent 1～20%.
2,, it is characterized in that described each group contains by weight according to the described sealing wax of claim 1:
Petroleum wax 70～80%
Macromolecule wax 1～6%
Tackifier 10～20%
Softening agent 2～15%.
3,, it is characterized in that described petroleum wax is the Microcrystalline Wax of 65～85 ℃ of dropping points according to claim 1 or 2 described sealing waxes.
4,, it is characterized in that described macromolecule wax is selected from low-molecular-weight polyethylene wax, byproduct polyethylene and expense-holder synthetic wax according to claim 1 or 2 described sealing waxes.
5, according to the described sealing wax of claim 4, the molecular-weight average that it is characterized in that described macromolecule wax is 1000～10000.
6, according to claim 1 or 2 described sealing waxes, it is characterized in that described softening agent is selected from dioctyl phthalate (DOP), polyisobutene, aromatic hydrocarbon oil, or their mixture.
7, according to the described sealing wax of claim 6, the molecular-weight average that it is characterized in that described softening agent is 300～30000.
8,, it is characterized in that described tackifier are selected from aromatic hydrocarbon resin and their modifier and hydrogenated derivatives, rosin and Abietyl modified thing and derivative, terpenes and terpene modified thing and derivative according to claim 1 or 2 described sealing waxes.
9, according to the described sealing wax of claim 8, the ring and ball softening point that it is characterized in that described tackifier is 65～120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021096627A CN1176174C (en) | 2002-05-15 | 2002-05-15 | Sealing wax for electronic element coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021096627A CN1176174C (en) | 2002-05-15 | 2002-05-15 | Sealing wax for electronic element coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1458216A true CN1458216A (en) | 2003-11-26 |
| CN1176174C CN1176174C (en) | 2004-11-17 |
Family
ID=29426227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021096627A Expired - Lifetime CN1176174C (en) | 2002-05-15 | 2002-05-15 | Sealing wax for electronic element coil |
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| CN (1) | CN1176174C (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346423C (en) * | 2004-10-29 | 2007-10-31 | 中国石油化工股份有限公司 | Insulated dipping embedding wax for transformer |
| CN102382477A (en) * | 2011-10-27 | 2012-03-21 | 铜陵市新泰电容电器有限责任公司 | Capacitor encapsulating wax |
| CN102453442A (en) * | 2010-10-14 | 2012-05-16 | 中国石油化工股份有限公司 | Aeroengine turbine guide vane polishing protection wax and polishing method |
| CN102504550A (en) * | 2011-10-27 | 2012-06-20 | 铜陵市新泰电容电器有限责任公司 | Sealing paste of metallized film capacitor |
| CN101397487B (en) * | 2007-09-26 | 2012-07-04 | 张锦强 | Asphalt battery sealing agent and preparation method thereof |
| CN102051053B (en) * | 2009-10-27 | 2012-08-29 | 中国石油化工股份有限公司 | Sealing and positioning wax for electronic tuner and preparation method thereof |
| US8481626B1 (en) * | 2012-01-16 | 2013-07-09 | Itron, Inc. | Wax-based encapsulant/moisture barrier for use with electronics received in water meter pits |
| CN103937274A (en) * | 2014-04-16 | 2014-07-23 | 盐城华盛变压器制造有限公司 | High-temperature-resistant anticorrosive transformer |
| CN103937275A (en) * | 2014-04-16 | 2014-07-23 | 盐城华盛变压器制造有限公司 | High-temperature-resistant anticorrosive transformer |
| CN104004365A (en) * | 2014-04-16 | 2014-08-27 | 青岛申达高新技术开发有限公司 | Insulating potting wax composition |
| CN104004366A (en) * | 2014-04-16 | 2014-08-27 | 青岛申达高新技术开发有限公司 | Insulating potting wax composition |
| CN106373780A (en) * | 2016-08-31 | 2017-02-01 | 安徽航睿电子科技有限公司 | Low-voltage power capacitor impregnant and production method thereof |
| CN106916460A (en) * | 2015-12-24 | 2017-07-04 | 上海桐钰电力科技有限公司 | A kind of closure paraffin of ultraviolet detector technique |
| CN108102395A (en) * | 2017-12-23 | 2018-06-01 | 刘家记 | A kind of impregnation enveloping wax for improving ceramic capacitor electrical stability |
| CN109628018A (en) * | 2018-11-29 | 2019-04-16 | 山东康威通信技术股份有限公司 | A method of oxidation PE wax is applied to circuit board sealing protection |
-
2002
- 2002-05-15 CN CNB021096627A patent/CN1176174C/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346423C (en) * | 2004-10-29 | 2007-10-31 | 中国石油化工股份有限公司 | Insulated dipping embedding wax for transformer |
| CN101397487B (en) * | 2007-09-26 | 2012-07-04 | 张锦强 | Asphalt battery sealing agent and preparation method thereof |
| CN102051053B (en) * | 2009-10-27 | 2012-08-29 | 中国石油化工股份有限公司 | Sealing and positioning wax for electronic tuner and preparation method thereof |
| CN102453442A (en) * | 2010-10-14 | 2012-05-16 | 中国石油化工股份有限公司 | Aeroengine turbine guide vane polishing protection wax and polishing method |
| CN102453442B (en) * | 2010-10-14 | 2014-03-05 | 中国石油化工股份有限公司 | Aeroengine turbine guide vane polishing protection wax and polishing method |
| CN102382477A (en) * | 2011-10-27 | 2012-03-21 | 铜陵市新泰电容电器有限责任公司 | Capacitor encapsulating wax |
| CN102504550A (en) * | 2011-10-27 | 2012-06-20 | 铜陵市新泰电容电器有限责任公司 | Sealing paste of metallized film capacitor |
| CN102504550B (en) * | 2011-10-27 | 2013-10-16 | 铜陵市新泰电容电器有限责任公司 | Sealing paste of metallized film capacitor |
| US8481626B1 (en) * | 2012-01-16 | 2013-07-09 | Itron, Inc. | Wax-based encapsulant/moisture barrier for use with electronics received in water meter pits |
| CN103937275A (en) * | 2014-04-16 | 2014-07-23 | 盐城华盛变压器制造有限公司 | High-temperature-resistant anticorrosive transformer |
| CN103937274A (en) * | 2014-04-16 | 2014-07-23 | 盐城华盛变压器制造有限公司 | High-temperature-resistant anticorrosive transformer |
| CN104004365A (en) * | 2014-04-16 | 2014-08-27 | 青岛申达高新技术开发有限公司 | Insulating potting wax composition |
| CN104004366A (en) * | 2014-04-16 | 2014-08-27 | 青岛申达高新技术开发有限公司 | Insulating potting wax composition |
| CN103937274B (en) * | 2014-04-16 | 2016-08-17 | 江苏华盛电气股份有限公司 | A kind of fire resistant anticorrosive transformator |
| CN103937275B (en) * | 2014-04-16 | 2016-08-17 | 江苏华盛电气股份有限公司 | A kind of fire resistant anticorrosive transformator |
| CN104004366B (en) * | 2014-04-16 | 2016-10-05 | 青岛金智高新技术有限公司 | A kind of insulation encapsulated Wax composition |
| CN104004365B (en) * | 2014-04-16 | 2016-10-05 | 青岛金智高新技术有限公司 | A kind of insulation encapsulated Wax composition |
| CN106916460A (en) * | 2015-12-24 | 2017-07-04 | 上海桐钰电力科技有限公司 | A kind of closure paraffin of ultraviolet detector technique |
| CN106373780A (en) * | 2016-08-31 | 2017-02-01 | 安徽航睿电子科技有限公司 | Low-voltage power capacitor impregnant and production method thereof |
| CN108102395A (en) * | 2017-12-23 | 2018-06-01 | 刘家记 | A kind of impregnation enveloping wax for improving ceramic capacitor electrical stability |
| CN109628018A (en) * | 2018-11-29 | 2019-04-16 | 山东康威通信技术股份有限公司 | A method of oxidation PE wax is applied to circuit board sealing protection |
| CN109628018B (en) * | 2018-11-29 | 2021-03-30 | 康威通信技术股份有限公司 | Method for applying oxidized PE wax to sealing protection of circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1176174C (en) | 2004-11-17 |
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