CN102408670A - Ammonia-free phenolic molding compound and its preparation method - Google Patents
Ammonia-free phenolic molding compound and its preparation method Download PDFInfo
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- CN102408670A CN102408670A CN2011102747063A CN201110274706A CN102408670A CN 102408670 A CN102408670 A CN 102408670A CN 2011102747063 A CN2011102747063 A CN 2011102747063A CN 201110274706 A CN201110274706 A CN 201110274706A CN 102408670 A CN102408670 A CN 102408670A
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Abstract
The invention discloses an ammonia-free phenolic molding compound and its preparation method. The compound is composed of the following raw materials: 100 parts of phenolic resin, 30-50 parts of kaolin, 140-180 parts of glass fiber, 3-8 parts of eleaostearic acid, 10-20 parts of nitrile-butadiene rubber, and optionally a small amount of a curing accelerator, a pigment and other auxiliary agents. The preparation method consists of: mixing the above components uniformly and conducting heating melting, kneading, mixing and crushing, thus obtaining the ammonia-free phenolic molding compound in irregular particles. The ammonia-free phenolic molding compound prepared by the invention has good heat resistance, high mechanical strength, low molding shrinkage, and dimensional stability, and also has no ammonia gas release during production and compression molding, thus being environment-friendly.
Description
Technical field
The present invention relates to a kind of phenolaldehyde moulding compound and preparation method thereof, relate in particular to no ammonia phenolaldehyde moulding compound of a kind of HS that is applied to electronics and automotive industry, high heat resistance, low molding shrinkage and preparation method thereof.
Background technology
In present electronics and the automotive industry material, phenolaldehyde moulding compound has purposes widely, and it mainly adopts with the wood powder is that the phenoplast of filler form through compacting, is commonly called as bakelite.
That its shortcoming of such phenolaldehyde moulding compound is can't reach is heat-resisting, HS, the low contraction and requirements such as dimensional stability, and produce with the compression molding process in ammonia release, contaminate environment are arranged.
Summary of the invention
The purpose of this invention is to provide a kind of no ammonia phenolaldehyde moulding compound and preparation method thereof, its main ingredient comprises resol, kaolin, spun glass, Triple Pressed Stearic Acid and nitrile rubber, to overcome the deficiency of mentioning in the above-mentioned prior art.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
A kind of no ammonia phenolaldehyde moulding compound, the proportioning of its feed composition is: 100 parts in resol, 30 ~ 50 parts of kaolin, 140 ~ 180 parts in spun glass, 3 ~ 8 parts of Triple Pressed Stearic Acid, 10 ~ 20 parts of paracrils.
In addition, comprise also in the feed composition that said auxiliary agent comprises curing catalyst, pigment etc. in 10 parts of the auxiliary agents, can be a kind of separately, also can use together.
Said resol is the solid heat-reactive phenolic resin, and melting temperature is less than 70 ℃.
Said kaolin adopts mica powder or talcum powder to substitute.
Said Triple Pressed Stearic Acid adopts calcium stearate or Zinic stearas to substitute.
Said nitrile rubber adopts Zylox to substitute.
A kind of method for preparing above-mentioned no ammonia phenolaldehyde moulding compound, specifically process through following steps:
A. be ground into resol less than 20 purpose fine powders;
B. in stirrer, add resol, kaolin, spun glass, Triple Pressed Stearic Acid, the nitrile rubber that crushes respectively, and it is mixed;
C. two rollers or the screw rod machine of the powder after mixing, make its fusion and kneading, mixing even through heating;
D. kneading, mixing uniform powder are through overcooling and pulverizing.
Wherein, can also add auxiliary agent, uniform mixing together in the raw material that in step b, crushes.
The no ammonia phenolaldehyde moulding compound that after overcooling and pulverizing, obtains becomes the irregular particle shape solid of granularity less than 5mm through reciprocating sieve again.
Above feed composition all by weight.
Beneficial effect of the present invention is: the no ammonia phenolaldehyde moulding compound that utilizes the preparation method of no ammonia phenolaldehyde moulding compound of the present invention to obtain has good thermotolerance, high physical strength, low molding shrinkage and dimensional stability; And no ammonia discharges in production and compression molding process, has the characteristics of environmental protection.
Embodiment
Set of dispense is following than form between the embodiment:
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Resol | 100 | 100 | 100 |
| Kaolin | 30 | 40 | 50 |
| Spun glass | 170 | 170 | 170 |
| Triple Pressed Stearic Acid | 5 | 5 | 5 |
| Nitrile rubber | 15 | 15 | 15 |
| Auxiliary agent | 6 | 6 | 6 |
Above feed composition all by weight.
Embodiment 1:
A. be ground into resol less than 20 purpose fine powders;
B. in stirrer, add 15 parts of 5 parts of 170 parts in 30 parts of 100 parts in resol, kaolin, spun glass, Triple Pressed Stearic Acid, nitrile rubbers, 6 parts of the auxiliary agents that crushes respectively, and it is mixed;
C. two rollers or the screw rod machine of the powder after mixing, make its fusion and kneading, mixing even through heating;
D. kneading, mixing uniform powder become the irregular particle shape solid of granularity less than 5mm through reciprocating sieve again through overcooling and pulverizing.
Obtain no ammonia phenolaldehyde moulding compound of the present invention through above preparation process.
Embodiment 2:
A. be ground into resol less than 20 purpose fine powders;
B. in stirrer, add 15 parts of 5 parts of 170 parts in 40 parts of 100 parts in resol, kaolin, spun glass, Triple Pressed Stearic Acid, nitrile rubbers, 6 parts of the auxiliary agents that crushes respectively, and it is mixed;
C. two rollers or the screw rod machine of the powder after mixing, make its fusion and kneading, mixing even through heating;
D. kneading, mixing uniform powder become the irregular particle shape solid of granularity less than 5mm through reciprocating sieve again through overcooling and pulverizing.
Obtain no ammonia phenolaldehyde moulding compound of the present invention through above preparation process.
Embodiment 3:
A. be ground into resol less than 20 purpose fine powders;
B. in stirrer, add 15 parts of 5 parts of 170 parts in 50 parts of 100 parts in resol, kaolin, spun glass, Triple Pressed Stearic Acid, nitrile rubbers, 6 parts of the auxiliary agents that crushes respectively, and it is mixed;
C. two rollers or the screw rod machine of the powder after mixing, make its fusion and kneading, mixing even through heating;
D. kneading, mixing uniform powder become the irregular particle shape solid of granularity less than 5mm through reciprocating sieve again through overcooling and pulverizing.
Obtain no ammonia phenolaldehyde moulding compound of the present invention through above preparation process.
The evaluating characteristics form is following:
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Flexural strength MPa | 180 | 185 | 180 |
| Modulus in flexure GPa | 17．5 | 18 | 19.5 |
| Molding shrinkage % | 0.04 | 0.03 | 0.02 |
| Heat-drawn wire ℃ | >;280 | >;280 | >;280 |
All with the moulding of transfer mould molding mode, actual conditions is following in the making of the used sample of above-mentioned evaluating characteristics:
Preheating temperature: 90-100 ℃
Die temperature: 165-175 ℃
Injection pressure: 60 MPa
Clamp time: 240 seconds
The after fixing condition: 180 ℃, 8 hours.
In addition, in the evaluating characteristics, flexural strength and modulus in flexure are according to GB/T 9341-2000 standard testing, and molding shrinkage is measured according to the E2 type method of GB/T 5471-2008, and heat-drawn wire is according to GB/T 1634.2-2004 standard test.
Claims (9)
1. no ammonia phenolaldehyde moulding compound, it is characterized in that: the proportioning of feed composition is: 100 parts in resol, 30 ~ 50 parts of kaolin, 140 ~ 180 parts in spun glass, 3 ~ 8 parts of Triple Pressed Stearic Acid, 10 ~ 20 parts of paracrils.
2. no ammonia phenolaldehyde moulding compound as claimed in claim 1 is characterized in that: comprise also in the feed composition that said auxiliary agent comprises curing catalyst, pigment in 10 parts of the auxiliary agents.
3. according to claim 1 or claim 2 no ammonia phenolaldehyde moulding compound, it is characterized in that: said resol is the solid heat-reactive phenolic resin, and melting temperature is less than 70 ℃.
4. according to claim 1 or claim 2 no ammonia phenolaldehyde moulding compound, it is characterized in that: said kaolin adopts mica powder or talcum powder to substitute.
5. according to claim 1 or claim 2 no ammonia phenolaldehyde moulding compound, it is characterized in that: said Triple Pressed Stearic Acid adopts calcium stearate or Zinic stearas to substitute.
6. according to claim 1 or claim 2 no ammonia phenolaldehyde moulding compound, it is characterized in that: said nitrile rubber adopts Zylox to substitute.
7. method for preparing no ammonia phenolaldehyde moulding compound as claimed in claim 1 is characterized in that: process through following steps:
A. be ground into resol less than 20 purpose fine powders;
B. in stirrer, add resol, kaolin, spun glass, Triple Pressed Stearic Acid, the nitrile rubber that crushes respectively, and it is mixed;
C. two rollers or the screw rod machine of the powder after mixing, make its fusion and kneading, mixing even through heating;
D. kneading, mixing uniform powder are through overcooling and pulverizing.
8. the preparation method of no ammonia phenolaldehyde moulding compound as claimed in claim 7 is characterized in that: also comprise auxiliary agent uniform mixing together in the raw material that in step b, crushes.
9. like the preparation method of claim 7 or 8 described no ammonia phenolaldehyde moulding compounds, it is characterized in that: the no ammonia phenolaldehyde moulding compound that after overcooling and pulverizing, obtains becomes the irregular particle shape solid of granularity less than 5mm through reciprocating sieve again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102747063A CN102408670A (en) | 2011-09-16 | 2011-09-16 | Ammonia-free phenolic molding compound and its preparation method |
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| CN2011102747063A CN102408670A (en) | 2011-09-16 | 2011-09-16 | Ammonia-free phenolic molding compound and its preparation method |
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| CN102408670A true CN102408670A (en) | 2012-04-11 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103087465A (en) * | 2013-03-01 | 2013-05-08 | 无锡创达电子有限公司 | Phenolic resin moulding compound |
| CN103087466A (en) * | 2013-03-01 | 2013-05-08 | 无锡创达电子有限公司 | Phenolic moulding plastic and preparation method thereof |
| CN104164051A (en) * | 2014-07-11 | 2014-11-26 | 蚌埠市天宇高温树脂材料有限公司 | Toughening-type environmental protection phenolic resin and preparation method of its composite material |
| CN104164050A (en) * | 2014-07-11 | 2014-11-26 | 蚌埠市天宇高温树脂材料有限公司 | Heatproof environmental protection phenolic resin and preparation method of its composite material |
| CN105086352A (en) * | 2015-09-14 | 2015-11-25 | 国网山东省电力公司临沂供电公司 | Bakelite and preparation method thereof |
| CN105860424A (en) * | 2016-04-27 | 2016-08-17 | 宁波安力电子材料有限公司 | Regular granular phenolic moulding plastic and preparation method thereof |
| CN109486101A (en) * | 2018-11-27 | 2019-03-19 | 江苏中鹏新材料股份有限公司 | Recoverying and utilizing method without ammonia phenolaldehyde moulding compound fine powder |
| CN113043493A (en) * | 2021-03-19 | 2021-06-29 | 常熟东南塑料有限公司 | High-yield preparation process of phenolic molding plastic |
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| CN101659780A (en) * | 2008-08-26 | 2010-03-03 | 丁新生 | Compositely modified thermosetting phenol-formaldehyde resin powder |
| CN101798435A (en) * | 2010-04-02 | 2010-08-11 | 沙县宏盛塑料有限公司 | High heat resistance glass fiber reinforced injection type phenolic moulding material and preparation method thereof |
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| CN101659780A (en) * | 2008-08-26 | 2010-03-03 | 丁新生 | Compositely modified thermosetting phenol-formaldehyde resin powder |
| CN101798435A (en) * | 2010-04-02 | 2010-08-11 | 沙县宏盛塑料有限公司 | High heat resistance glass fiber reinforced injection type phenolic moulding material and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103087465A (en) * | 2013-03-01 | 2013-05-08 | 无锡创达电子有限公司 | Phenolic resin moulding compound |
| CN103087466A (en) * | 2013-03-01 | 2013-05-08 | 无锡创达电子有限公司 | Phenolic moulding plastic and preparation method thereof |
| CN104164051A (en) * | 2014-07-11 | 2014-11-26 | 蚌埠市天宇高温树脂材料有限公司 | Toughening-type environmental protection phenolic resin and preparation method of its composite material |
| CN104164050A (en) * | 2014-07-11 | 2014-11-26 | 蚌埠市天宇高温树脂材料有限公司 | Heatproof environmental protection phenolic resin and preparation method of its composite material |
| CN104164050B (en) * | 2014-07-11 | 2016-11-09 | 蚌埠市天宇高温树脂材料有限公司 | A kind of heat resistant type Environmental protection phenol formaldehyde resin and the preparation method of composite thereof |
| CN104164051B (en) * | 2014-07-11 | 2016-11-09 | 蚌埠市天宇高温树脂材料有限公司 | A kind of toughening type Environmental protection phenol formaldehyde resin and the preparation method of composite thereof |
| CN105086352A (en) * | 2015-09-14 | 2015-11-25 | 国网山东省电力公司临沂供电公司 | Bakelite and preparation method thereof |
| CN105086352B (en) * | 2015-09-14 | 2017-06-20 | 国网山东省电力公司临沂供电公司 | A kind of bakelite and preparation method thereof |
| CN105860424A (en) * | 2016-04-27 | 2016-08-17 | 宁波安力电子材料有限公司 | Regular granular phenolic moulding plastic and preparation method thereof |
| CN109486101A (en) * | 2018-11-27 | 2019-03-19 | 江苏中鹏新材料股份有限公司 | Recoverying and utilizing method without ammonia phenolaldehyde moulding compound fine powder |
| CN113043493A (en) * | 2021-03-19 | 2021-06-29 | 常熟东南塑料有限公司 | High-yield preparation process of phenolic molding plastic |
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Application publication date: 20120411 |