CN103804851A - Injection moulded phenolic moulding plastic for communtator - Google Patents
Injection moulded phenolic moulding plastic for communtator Download PDFInfo
- Publication number
- CN103804851A CN103804851A CN201410052922.7A CN201410052922A CN103804851A CN 103804851 A CN103804851 A CN 103804851A CN 201410052922 A CN201410052922 A CN 201410052922A CN 103804851 A CN103804851 A CN 103804851A
- Authority
- CN
- China
- Prior art keywords
- injection molding
- moulding compound
- phenolaldehyde moulding
- parts
- commutator
- 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.)
- Granted
Links
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 238000000465 moulding Methods 0.000 title abstract description 6
- 238000002347 injection Methods 0.000 title abstract description 5
- 239000007924 injection Substances 0.000 title abstract description 5
- 238000001746 injection moulding Methods 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 239000000206 moulding compound Substances 0.000 claims description 25
- 229920003987 resole Polymers 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 4
- 239000012764 mineral filler Substances 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 3
- 239000008116 calcium stearate Substances 0.000 claims description 3
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- -1 Zinic stearas Chemical compound 0.000 claims description 2
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 claims description 2
- 229940063655 aluminum stearate Drugs 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 2
- 239000000347 magnesium hydroxide Substances 0.000 claims description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 2
- 235000019359 magnesium stearate Nutrition 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000010456 wollastonite Substances 0.000 claims description 2
- 229910052882 wollastonite Inorganic materials 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract 1
- 239000011256 inorganic filler Substances 0.000 abstract 1
- 229910003475 inorganic filler Inorganic materials 0.000 abstract 1
- 239000005011 phenolic resin Substances 0.000 abstract 1
- 229920001568 phenolic resin Polymers 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000748 compression moulding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Abstract
The invention discloses an injection moulded phenolic moulding plastic for a commentator. The injection moulded phenolic moulding plastic comprises the following components in parts by weight: 15-24 parts of phenolic resin, 3-8 parts of a curing agent, 1-3 parts of a curing accelerator, 25-33 parts of reinforced fibers, 0.5-2 parts of a releasing agent, 10-45 parts of inorganic filler and 1-5 parts of a flexibilizer. The phenolic moulding plastic can be used for an injection moulding machine, so that the moulding efficiency is greatly improved. The mould is not sticky, the bending strength of the moulded product reaches up to over 180Mpa, the thermal deformation temperature is greater than 240 DEG C, and the insulation resistance is greater than 1011 ohms.
Description
Technical field
The invention belongs to phenolaldehyde moulding compound field, be specifically related to a kind of commutator injection molding phenolaldehyde moulding compound.
Background technology
Commutator is an important component of electric motor, should have good electric property, resistance toheat, physical strength and dimensional stability for the phenolaldehyde moulding compound of commutator.The phenolaldehyde moulding compound that existing domestic commutator is used is subject to its performance limitations, not being suitable for small-sized reverser (external diameter 10mm is following) uses, and mostly can only be used for compression molding, cannot meet injection molding requirement, for example, before applicant, a kind of high bending strength phenolaldehyde moulding compound (CN102775723A) of application has high bending strength and shock strength, but also having some limitations property, thereby the pushing ram that can block injector when for injection molding cannot be produced, and for ensureing dimensional stability, can only be used for into the commutator that molded external diameter is greater than 10mm, if commutator endoporus less (endoporus 3mm is following), when fraising or last item, easily ftracture.In addition, the efficiency of compression molding is far below injection molding, and as compression molding needs a 2-3 minute mould (dwell time 75-120 second), and injection molding only needs 1 minute mould (dwell time 25-35 second).
Summary of the invention
The deficiency that the object of the invention is to overcome above-mentioned commutator phenolaldehyde moulding compound, makes improvements, and provides one to can be used for injection molding commutator phenolaldehyde moulding compound.
It is as follows that the present invention realizes the technical scheme that above-mentioned purpose adopts:
A kind of commutator injection molding phenolaldehyde moulding compound, by weight, comprises following component:
Resol 15-24 part, solidifying agent 3-8 part, curing catalyst 1-3 part, fortifying fibre 25-33 part, releasing agent 0.5-2 part, mineral filler 10-45 part and toughner 1-5 part.
Further, the softening temperature of described resol is that 90-100 ℃, free phenol content are 0.5-8%.
Further, described solidifying agent is vulkacit H.
Further, described curing catalyst is at least one in calcium oxide, magnesium oxide, calcium hydroxide and magnesium hydroxide.
Further, described fortifying fibre is alkali free glass fibre.
Further, described releasing agent is at least one in stearic acid, Zinic stearas, calcium stearate, Magnesium Stearate, aluminum stearate, silicone release and paraffin.
Further, described mineral filler is at least one in wollastonite, mica powder and talcum powder.
Further, described toughner is urethane.
The preparation method of injection molding phenolaldehyde moulding compound for above-mentioned commutator, comprises after described each component is mixed into screw extrusion press and extruding, wherein, three sections of temperature settings of screw extrusion press are respectively: one section of 20-60 ℃, two sections of 60-115 ℃, three sections of 75-125 ℃.
In the present invention, resol softening temperature is 90-100 ℃ (GB/T8146-2003), free phenol content is 0.5%-8%(ISO8974-2002), low softening point has ensured that product is softening smoothly in injector machine barrel, do not block machine barrel, low-free phenol, ensures product sticking to mould not in machine barrel and mould, reduces the corrosion to injection cylinder and mould.
In the present invention, select alkali free glass fibre as fortifying fibre, optimum fiber mean diameter is 8-9 μ m, and mean length is 2-2.9mm, has ensured that reverser endoporus fraising time ratio is easier to, and meets the use of small-sized reverser (external diameter 10mm is following).
In the present invention, when selecting urethane to ensure product fraising and last item as toughner, do not ftracture.
Commutator of the present invention can be used for injection moulding machine with injection molding phenolaldehyde moulding compound, thereby has greatly improved shaping efficiency, and more than after moulding, flexural strength reaches 180Mpa, heat-drawn wire is greater than 240 ℃, and insulation resistance is greater than 10
11ohm.Compared with pressure roller technique, the present invention can uninterruptedly produce continuously, because being completes in extruder barrel inside, and production process environmental protection, and in production process, quality product, processing parameter are easily controlled, and efficiency is high, good product consistency.
Embodiment
Below in conjunction with preferred embodiment, the present invention is described in further details.
Embodiment mono-
By weight, by 24 parts of resol, (softening temperature is 90-100 ℃ of GB/T8146-2003, free phenol content is 0.5%-8% ISO8974-2002), 8 parts of vulkacit Hs, 2 parts of magnesium oxide, (mean diameter is 8-9 μ m to 26 parts of alkali free glass fibres, mean length is 2-6mm), 1 part of stearic acid, 36 parts of wollastonites and 3 parts of urethane (model MH-T80, particulate state, order number is 75-300 order) prepare burden after mixing, (machine models is WF100 to enter single screw extrusion machine, warm area is divided into three sections, first paragraph feeding preheating, second segment is mediated plasticizing, mediate homogenizing and discharging for the 3rd section) extrude, wherein, three sections of temperature of screw extrusion press are set to respectively: one section 45 ℃, two sections 98 ℃, three sections 85 ℃, after extruding through compressing tablet, cooling, pulverizing obtains the following particle of diameter 2cm, be commutator injection molding phenolaldehyde moulding compound.
Embodiment bis-
By weight, 20 parts of resol, 7 parts of vulkacit Hs, 1 part of magnesium oxide, 1 part of calcium oxide, 30 parts of alkali free glass fibres, 0.5 part of stearic acid, 1 part of calcium stearate, 36.5 parts of mica powders and 3 parts of urethane batchings are mixed, and production process is identical with embodiment mono-.
Embodiment tri-
By weight, 15 parts of resol, 6 parts of vulkacit Hs, 2 parts of magnesium oxide, 33 parts of alkali free glass fibres, 1 part of Zinic stearas, 36 parts of talcum powder, 3 parts of urethane batchings are mixed, production process is identical with embodiment mono-.
Commutator by above embodiment mono-to three gained is made test strip (batten is with reference to phenolaldehyde moulding compound GB GB1401.3-2008 compacting) with injection molding phenolaldehyde moulding compound particle through sampling, through after fixing, (oven temperature is set 150 degree 3 hours, 190 degree 3 hours, 210 degree 3 hours) process to obtain test sample, test result is as follows.
Parameters meets phenolaldehyde moulding compound GB GB1401.3-2008.
By injection molding phenolaldehyde moulding compound finished product production test on injection moulding machine for commutator (producing external diameter is the commutator of 8.0mm and 5.6mm) of above embodiment gained, meet design requirements completely through test, and produce continuously not stifled machine, not sticking to mould, fraising is not ftractureed.
Injector processing parameter:
Barrel temperature is set: 70-95 ℃, injection pressure is 80-120Mpa, die temperature: 180 ℃, set inject time: 25-120 second.
Claims (9)
1. a commutator injection molding phenolaldehyde moulding compound, is characterized in that, by weight, comprises following component:
Resol 15-24 part, solidifying agent 3-8 part, curing catalyst 1-3 part, fortifying fibre 25-33 part, releasing agent 0.5-2 part, mineral filler 10-45 part and toughner 1-5 part.
2. commutator according to claim 1 injection molding phenolaldehyde moulding compound, is characterized in that, the softening temperature of described resol is that 90-100 ℃, free phenol content are 0.5-8%.
3. commutator according to claim 1 injection molding phenolaldehyde moulding compound, is characterized in that, described solidifying agent is vulkacit H.
4. commutator according to claim 1 injection molding phenolaldehyde moulding compound, is characterized in that, described curing catalyst is at least one in calcium oxide, magnesium oxide, calcium hydroxide and magnesium hydroxide.
5. commutator according to claim 1 injection molding phenolaldehyde moulding compound, is characterized in that, described fortifying fibre is alkali free glass fibre.
6. commutator according to claim 1 injection molding phenolaldehyde moulding compound, is characterized in that, described releasing agent is at least one in stearic acid, Zinic stearas, calcium stearate, Magnesium Stearate, aluminum stearate, silicone release and paraffin.
7. commutator according to claim 1 injection molding phenolaldehyde moulding compound, is characterized in that, described mineral filler is at least one in wollastonite, mica powder and talcum powder.
8. commutator according to claim 1 injection molding phenolaldehyde moulding compound, is characterized in that, described toughner is urethane.
9. the preparation method of commutator use injection molding phenolaldehyde moulding compound described in claim 1, it is characterized in that, comprise after described each component is mixed into screw extrusion press and extruding, wherein, three sections of temperature settings of screw extrusion press are respectively: one section of 20-60 ℃, two sections of 60-115 ℃, three sections of 75-125 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052922.7A CN103804851B (en) | 2014-02-17 | 2014-02-17 | Commutator injection molding phenolaldehyde moulding compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052922.7A CN103804851B (en) | 2014-02-17 | 2014-02-17 | Commutator injection molding phenolaldehyde moulding compound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103804851A true CN103804851A (en) | 2014-05-21 |
| CN103804851B CN103804851B (en) | 2015-09-02 |
Family
ID=50702268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410052922.7A Expired - Fee Related CN103804851B (en) | 2014-02-17 | 2014-02-17 | Commutator injection molding phenolaldehyde moulding compound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103804851B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559042A (en) * | 2014-12-30 | 2015-04-29 | 浙江嘉民塑胶有限公司 | Phenolic resin injection molding material for bakelite brush carrier |
| CN105017713A (en) * | 2015-07-28 | 2015-11-04 | 广西信和新合成材料有限公司 | High-glass-fiber extrusion die head granulation-type phenol formaldehyde molding compound for motor commutators |
| CN107226995A (en) * | 2017-07-25 | 2017-10-03 | 常州信息职业技术学院 | A kind of light-duty phenoplasts power check well and preparation method thereof |
| CN107236247A (en) * | 2017-07-25 | 2017-10-10 | 常州信息职业技术学院 | A kind of light-duty phenoplasts inspection shaft and preparation method thereof |
| CN107266854A (en) * | 2017-07-25 | 2017-10-20 | 常州信息职业技术学院 | A kind of plain edition or heavy phenoplasts inspection shaft and preparation method thereof |
| CN107903581A (en) * | 2017-12-19 | 2018-04-13 | 广西信和新合成材料有限公司 | Square particle benzoxazine moulding compound |
| CN109912926A (en) * | 2019-03-29 | 2019-06-21 | 昆山森华化工有限公司 | One kind is for molding phenolaldehyde moulding compound of automobile component and preparation method thereof |
| CN113337076A (en) * | 2021-05-12 | 2021-09-03 | 瑞安市恒丰机电有限公司 | Bakelite flour material for manufacturing commutator |
| CN116376216A (en) * | 2023-03-27 | 2023-07-04 | 宁波安力电子材料有限公司 | Preparation method of phenolic resin molding material for commutator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781441A (en) * | 2009-01-21 | 2010-07-21 | 上海欧亚合成材料有限公司 | Phenolic moulding plastics for commutator |
| CN102775723A (en) * | 2012-06-07 | 2012-11-14 | 广西信和新合成材料有限公司 | Phenolic aldehyde moulding compound with high flexural strength |
-
2014
- 2014-02-17 CN CN201410052922.7A patent/CN103804851B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781441A (en) * | 2009-01-21 | 2010-07-21 | 上海欧亚合成材料有限公司 | Phenolic moulding plastics for commutator |
| CN102775723A (en) * | 2012-06-07 | 2012-11-14 | 广西信和新合成材料有限公司 | Phenolic aldehyde moulding compound with high flexural strength |
Non-Patent Citations (3)
| Title |
|---|
| 刘义红等: "汽车换向器用酚醛树脂模塑料的研究", 《汽车工艺与材料》 * |
| 潘建光等: "注射型酚醛模塑料发展概况", 《绝缘材料通讯》 * |
| 王鸿等: "耐高温注射型酚醛模塑料的研制", 《中国塑料》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559042A (en) * | 2014-12-30 | 2015-04-29 | 浙江嘉民塑胶有限公司 | Phenolic resin injection molding material for bakelite brush carrier |
| CN105017713A (en) * | 2015-07-28 | 2015-11-04 | 广西信和新合成材料有限公司 | High-glass-fiber extrusion die head granulation-type phenol formaldehyde molding compound for motor commutators |
| CN107226995A (en) * | 2017-07-25 | 2017-10-03 | 常州信息职业技术学院 | A kind of light-duty phenoplasts power check well and preparation method thereof |
| CN107236247A (en) * | 2017-07-25 | 2017-10-10 | 常州信息职业技术学院 | A kind of light-duty phenoplasts inspection shaft and preparation method thereof |
| CN107266854A (en) * | 2017-07-25 | 2017-10-20 | 常州信息职业技术学院 | A kind of plain edition or heavy phenoplasts inspection shaft and preparation method thereof |
| CN107903581A (en) * | 2017-12-19 | 2018-04-13 | 广西信和新合成材料有限公司 | Square particle benzoxazine moulding compound |
| CN109912926A (en) * | 2019-03-29 | 2019-06-21 | 昆山森华化工有限公司 | One kind is for molding phenolaldehyde moulding compound of automobile component and preparation method thereof |
| CN113337076A (en) * | 2021-05-12 | 2021-09-03 | 瑞安市恒丰机电有限公司 | Bakelite flour material for manufacturing commutator |
| CN116376216A (en) * | 2023-03-27 | 2023-07-04 | 宁波安力电子材料有限公司 | Preparation method of phenolic resin molding material for commutator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103804851B (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103804851B (en) | Commutator injection molding phenolaldehyde moulding compound | |
| CN103122092A (en) | Thermal conductive plastic and method for manufacturing mobile telephone shell by utilizing thermal conductive plastic | |
| CN103407019B (en) | A kind of assembling die and the application in forming composite structural member thereof | |
| CN105778484B (en) | The modified nylon materials and its Method of printing of a kind of 3D printing applied to FDM technology | |
| JP5768811B2 (en) | Manufacturing method of injection molded body | |
| CN101161726A (en) | Highly-conductive polyphenylene sulfide composite material and method for making same | |
| CN102321339B (en) | Amino resin composite capable of injection molding and preparation method thereof | |
| CN102634124A (en) | Fiber reinforced thermoplastic polymer matrix composite material and preparation method thereof | |
| CN103333470A (en) | A kind of heat conduction polyester resin material and preparation method thereof | |
| CN103509342A (en) | Glass fiber reinforced polyphenylene sulfide resin and preparation method thereof | |
| CN105268978A (en) | Preparation method for piston by powder injection molding | |
| CN109532154B (en) | Flame-retardant co-extruded wood-plastic profile | |
| CN109912926A (en) | One kind is for molding phenolaldehyde moulding compound of automobile component and preparation method thereof | |
| CN103937150B (en) | Flaxen fiber strengthens injection phenolic moulding plastics and preparation method thereof | |
| CN109251410A (en) | Low warp glass fiber reinforced polypropylene compound material and preparation method thereof | |
| CN202584948U (en) | Parallel bunched cable extruding mold | |
| CN105670324B (en) | A kind of bamboo modeling heating floor and its processing method with anion | |
| CN102993631A (en) | Special phenolic glass steel mould plastic | |
| CN105086352B (en) | A kind of bakelite and preparation method thereof | |
| CN1105143C (en) | Process for preparing phenolaldehyde moulding compound | |
| CN107841090A (en) | A kind of impact resistance PEEK composites | |
| CN201838372U (en) | Conducting wire core rod made of thermoplastic resin matrix composite material | |
| CN202911110U (en) | Device for preparing long fiber reinforced polypropylene composite sheet | |
| CN105290391A (en) | Method for manufacturing sampler through powder injection moulding | |
| CN102504473A (en) | Thermoset phenolic aldehyde compound pipe, preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 |