CN104725766A - Adhesion-free phenolic moulding material and preparation method thereof - Google Patents
Adhesion-free phenolic moulding material and preparation method thereof Download PDFInfo
- Publication number
- CN104725766A CN104725766A CN201510107816.9A CN201510107816A CN104725766A CN 104725766 A CN104725766 A CN 104725766A CN 201510107816 A CN201510107816 A CN 201510107816A CN 104725766 A CN104725766 A CN 104725766A
- Authority
- CN
- China
- Prior art keywords
- parts
- moulding compound
- phenolaldehyde moulding
- sticking
- plasticating
- 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.)
- Pending
Links
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention provides an adhesion-free moulding material and a preparation method thereof, belonging to the technical field of thermoset moulding material and preparation thereof. The adhesion-free moulding material is prepared from the following raw materials in parts by weight: 30-45 parts of phenolic resin, 6-8 parts of a curing agent, 30-35 parts of organic reinforced fibers, 6-8 parts of nano reinforcing powder, 1-3 parts of a curing accelerator, 1.3-3 parts of a high-efficiency releasing agent and 5-8 parts of organic fillers. The preparation method comprises the following steps: crushing 35-45 parts of phenolic resin which is metered by weight in a crusher to obtain a powdery base material; kneading the powdery base material metered in parts by weight in a kneader; plasticating the obtained mixture in a plasticator, wherein the plasticating temperature and the plasticating time are both under control; cooling to room temperature; crushing the obtained flaky material to be granulated in the crusher; and screening to finally obtain the finished product. The moulding material has excellent adhesion-free effect, mold fluffing can be slowed down, the application range can be widened, the process steps are short and the equipment is simple.
Description
Technical field
The invention belongs to duroplastic moulding materials and preparing technical field thereof, be specifically related to a kind of phenolaldehyde moulding compound avoiding sticking to mould, and relate to its preparation method.
Background technology
Phenolaldehyde moulding compound be with novolac resin or heat-reactive phenolic resin for matrix (matrix is base-material), add organic and inorganic filler and other Synergist S-421 95 processes.Resol and moulding compound thereof are the kinds of suitability for industrialized production the earliest in synthetic resins, plastics, so far the history of existing nearly over one hundred year.Raw material sources based on them are wider, production technique is terse and equipment is simple, molding processibility is good, price is cheaper, and very excellent resistance toheat, mechanical property, electrical property, thermal characteristics, ablation property, chemical property and radiation resistance can be obtained by all means, especially there is good flame retardant properties, low rate of being fuming, little generation obnoxious flavour, become mechanical, electric, building, mining, national defence and the indispensable material of other industrial sector.
The shaping of phenolaldehyde moulding compound is normally carried out in the mould of heating and pressurization, and shaping mode mainly contains injection and compression molding.In moulding process, require that the cavity surface of mould is smooth, because if die cavity exists fluffing situation, so can produce mold sticking through accumulation after a while, so cleaning and use and avoid occurring flaw product when must carry out pole to cavity surface.
As is known in the industry, common phenolaldehyde moulding compound inevitably produces some organic volatiles when curing molding, although these organic volatiles are mostly discharged by die venting mouth, but unavoidably there is part can produce the fluffiness of mould in cavity surface accumulation, As time goes on more long-pending thicker, mold sticking increases the weight of day by day, finally causes the quality product that cannot ensure phenolic molding compound material products.
The technical intelligence about phenolaldehyde moulding compound is no lack of in disclosed Chinese patent literature, as application for a patent for invention publication No. CN103183910A (fire-retardant phenolaldehyde moulding compound), Authorization Notice No. CN102863736B (flame-retardant phenolic resin formed material), publication No. CN102977543A (a kind of phenolaldehyde moulding compound of halogen-free flameproof), CN103087466A (a kind of phenolaldehyde moulding compound and preparation method thereof) and CN103183908A (resistant to elevated temperatures phenolaldehyde moulding compound), etc.
The patent application scheme being not limited to exemplify above respectively has corresponding technology strong point and all do not add in formula exceptionally releasing agent, and the self-evident effect adding releasing agent is quality that is conveniently stripped, that ensure shaping efficiency, protection mould and guarantee phenolic molding compound material products.Although releasing agent is of a great variety, reach tens of one-tenth hundred kinds, but industry often generally select for the consideration because of tired just letter with routine as stearic acid, Zinic stearas, calcium stearate, one or more combination in aluminum stearate and organosilicon, because its reasonable amount in the formula system of whole phenolaldehyde moulding compound need could be determined through the repetition test of non-limited number of times for the releasing agent of unconventional use, so create following blindly property and dependency to a certain extent, constrain and solve the process of the applicant in the above mentioned mould fluffing problem caused because of sticking to mould.In addition, the supporting material adding reasonable amount in the formula system of phenolaldehyde moulding compound significantly can promote the mechanical and physical performance of phenolic molding compound material products, does not provide corresponding enlightenment to this equally in above mentioned patent application scheme.
For above-mentioned prior art, the applicant has done long-term and useful exploration and test repeatedly, finally defines technical scheme described below.
Summary of the invention
Top priority of the present invention is that providing a kind of contributes to embodying excellent free sticky imitating really and use protection mould and the phenolaldehyde moulding compound ensureing product molding quality, be conducive to embodying desirable mechanical and physical performance and use the sticking to mould avoided expanding purposes.
Another task of the present invention is to provide a kind of preparation method avoiding the phenolaldehyde moulding compound of sticking to mould, and the method processing step is succinct, without the need to relying on complicated equipment, technical factor easily do not control and harsh and the phenolaldehyde moulding compound obtained can be made to play excellent free stickyly imitate fruit and use and prevent mould from fluffing.
Top priority of the present invention has been come like this, a kind of phenolaldehyde moulding compound avoiding sticking to mould, and it is made up of the raw material of following parts by weight proportioning:
In a specific embodiment of the present invention, described resol is acid catalyzed and the quality % content of the free phenol thermoplastic novolac phenolic resin that is less than 1%.
In another specific embodiment of the present invention, described solidifying agent is hexamethylenetetramine.
In another specific embodiment of the present invention, described organic reinforced fiber was the lignocellulose of 80 mesh sieves.
In another specific embodiment of the present invention, described nanometer reinforcement powder is nano-calcium carbonate.
Also have in a specific embodiment of the present invention, described curing catalyst is activated magnesia and/or calcium hydroxide.
More of the present invention and in a specific embodiment, described high efficient demoulding agent is OP wax and/or ethylene bis stearic acid amide (EBS).
In an of the present invention and then specific embodiment, described mineral filler is one or more the combination in light active calcium carbonate, talcum powder and kaolin.
Another task of the present invention has been come like this, and a kind of preparation method avoiding the phenolaldehyde moulding compound of sticking to mould, comprises the following steps:
A) prepare substrate material, the resol 35-45 part taken by weight is dropped in pulverizer and pulverizes, obtain powder shaped substrate material;
B) compound is prepared, by the solidifying agent 6-8 part taken by weight, organic machine fortifying fibre 30-35 part, nanometer reinforcement powder 6-8 part, curing catalyst 1-3 part, high efficient demoulding agent 1.3-3 part and mineral filler 5-8 part in company with by steps A) the powder shaped substrate material that obtains introduces in kneader and mediates, and obtains compound;
C) plasticate, by by step B) compound that obtains introduces plasticator and plasticates, and control plasticating temperature and control is plasticated the time, be then cooled to room temperature, what obtain sheet treats granulation material;
D) granulation, by by step C) sheet that obtains treat that granulation material is introduced pulverizer and pulverized, then through screening, obtain the phenolaldehyde moulding compound can avoiding sticking to mould.
In an again of the present invention and then specific embodiment, step C) described in control plasticating temperature be that plasticating temperature is controlled as 90-110 DEG C; The described control time of plasticating is 5-8min by time controling of plasticating.
Technical scheme provided by the invention due to use in formula free phenol lower than 1% resol, add high efficient demoulding agent and the nanometer reinforcement powder of rational proportion simultaneously, thus the amount of organic volatile in forming materials process is reduced on the one hand, material release performance is improved on the other hand by high efficient demoulding agent, play the free sticky of excellence and imitate fruit, delay the time that mould fluffiness occurs, ensure product molding quality, knit powder by nanometer benefit on the one hand again and significantly improve mechanical and physical performance, in order to expansion purposes; The preparation method's processing step provided is brief, and the equipment of use is simple, and technical factor is not harsh and be easy to control, and both can ensure that the phenolaldehyde moulding compound obtained possessed and excellent free stickyly imitate fruit, and can embody desirable mechanical and physical performance again.
Embodiment
Embodiment 1:
A) substrate material is prepared, by acid catalyzedly (namely being produced by acid catalyzed process of taking by weight, as follows) and the quality % content of free phenol be less than in thermoplastic novolac phenolic resin 30 parts of input pulverizers of 1% and pulverize, obtain powder shaped substrate material;
B) compound is prepared, by the hexamethylenetetramine 6 parts taken by weight, cross the lignocellulose 35 parts of 80 mesh sieves, nano-calcium carbonate 6 parts, activated magnesia 2 parts, ethylene bis stearic acid amide (EBS) 1.5 parts, 1 part, OP wax and light active calcium carbonate 7 parts of companions by steps A) the powder shaped substrate material that obtains introduces in kneader and mediates (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (namely mixing) on the twin-roll plastic mixing mill of two rolling, and plasticating temperature is 100 DEG C, and the time of plasticating is 6min, is then cooled to room temperature, and what obtain sheet treats granulation material;
D) granulation, by by step C) sheet that obtains treat that granulation material is introduced pulverizer and pulverized, then through screening, obtain the phenolaldehyde moulding compound can avoiding sticking to mould.
If in step B) in add parts by weight be the tinting material of the required color of 1.4-1.6 part as ink, so can obtain the phenolaldehyde moulding compound of the colored i.e. sticking to mould avoided of respective color.
Embodiment 2:
A) prepare substrate material, by take by weight acid catalyzed and the quality % content of free phenol be less than in thermoplastic novolac phenolic resin 35 parts of input pulverizers of 1% and pulverize, obtain the substrate material of powdery;
B) compound is prepared, by the hexamethylenetetramine 7 parts taken by weight, cross the lignocellulose 30 parts of 80 mesh sieves, nano-calcium carbonate 8 parts, activated magnesia 1 part, 1 part, calcium hydroxide, 3 parts, OP wax and talcum powder 6 parts of companions by steps A) substrate material of powder shaped that obtains introduces in kneader and mediates (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (namely mixing) on the twin-roll plastic mixing mill of two rolling, and plasticating temperature is 110 DEG C, and the time of plasticating is 5min, is then cooled to room temperature, and what obtain sheet treats granulation material;
D) granulation, by by step C) sheet that obtains treat that granulation material is introduced pulverizer and pulverized, then through screening, obtain the phenolaldehyde moulding compound can avoiding sticking to mould.
If in step B) in add parts by weight be the tinting material of the required color of 1.4-1.6 part as ink, so can obtain the phenolaldehyde moulding compound of the colored i.e. sticking to mould avoided of respective color.
Embodiment 3:
A) prepare substrate material, by take by weight acid catalyzed and the quality % content of free phenol be less than in thermoplastic novolac phenolic resin 40 parts of input pulverizers of 1% and pulverize, obtain the substrate material of powdery;
B) compound is prepared, by the hexamethylenetetramine 8 parts taken by weight, cross the lignocellulose 32 parts of 80 mesh sieves, nano-calcium carbonate 7 parts, activated magnesia 1.5 parts, 1 part, calcium hydroxide, ethylene bis stearic acid amide (EBS) 2.8 parts and light active calcium carbonate 5 parts of companions by steps A) the powder shaped substrate material that obtains introduces in kneader and mediates (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (namely mixing) on the twin-roll plastic mixing mill of two rolling, and plasticating temperature is 90 DEG C, and the time of plasticating is 8min, is then cooled to room temperature, and what obtain sheet treats granulation material;
D) granulation, by by step C) sheet that obtains treat that granulation material is introduced pulverizer and pulverized, then through screening, obtain the phenolaldehyde moulding compound can avoiding sticking to mould.
If in step B) in add parts by weight be the tinting material of the required color of 1.4-1.6 part as ink, so can obtain the phenolaldehyde moulding compound of the colored i.e. sticking to mould avoided of respective color.
Embodiment 4
A) prepare substrate material, by take by weight acid catalyzed and the quality % content of free phenol be less than in thermoplastic novolac phenolic resin 45 parts of input pulverizers of 1% and pulverize, obtain the substrate material of powdery;
B) compound is prepared, by the hexamethylenetetramine 7.5 parts taken by weight, cross the lignocellulose 34 parts of 80 mesh sieves, nano-calcium carbonate 7.5 parts, 2.2 parts, calcium hydroxide, 3 parts, OP wax and kaolin 8 parts of companions by steps A) the powder shaped substrate material that obtains introduces in kneader and mediates (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (namely mixing) on the twin-roll plastic mixing mill of two rolling, and plasticating temperature is 105 DEG C, and the time of plasticating is 7min, is then cooled to room temperature, and what obtain sheet treats granulation material;
D) granulation, by by step C) sheet that obtains treat that granulation material is introduced pulverizer and pulverized, then through screening, obtain the phenolaldehyde moulding compound can avoiding sticking to mould.
If in step B) in add parts by weight be the tinting material of the required color of 1.4-1.6 part as ink, so can obtain the phenolaldehyde moulding compound of the colored i.e. sticking to mould avoided of respective color.
Embodiment 5:
A) prepare substrate material, by take by weight acid catalyzed and the quality % content of free phenol be less than in thermoplastic novolac phenolic resin 42 parts of input pulverizers of 1% and pulverize, obtain the substrate material of powdery;
B) compound is prepared, by the hexamethylenetetramine 6.5 parts taken by weight, cross the lignocellulose 31 parts of 80 mesh sieves, nano-calcium carbonate 6.5 parts, activated magnesia 0.5 part, 0.5 part, calcium hydroxide, 0.6 part, OP wax, ethylene bis stearamide (EBS) 0.7 part and light active calcium carbonate 7.5 parts of companions by steps A) the powder shaped substrate material that obtains introduces in kneader and mediates (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (namely mixing) on the twin-roll plastic mixing mill of two rolling, and plasticating temperature is 95 DEG C, and the time of plasticating is 8min, is then cooled to room temperature, and what obtain sheet treats granulation material;
D) granulation, by by step C) sheet that obtains treat that granulation material is introduced pulverizer and pulverized, then through screening, obtain the phenolaldehyde moulding compound can avoiding sticking to mould.
If in step B) in add parts by weight be the tinting material of the required color of 1.4-1.6 part as ink, so can obtain the phenolaldehyde moulding compound of the colored i.e. sticking to mould avoided of respective color.
The phenolaldehyde moulding compound of the sticking to mould avoided obtained by above-described embodiment 1-5 has the technical indicator shown in following table after tested.
Claims (10)
1. can avoid a phenolaldehyde moulding compound for sticking to mould, it is characterized in that it is made up of the raw material of following parts by weight proportioning:
Resol 30-45 part;
Solidifying agent 6-8 part;
Organic reinforced fiber 30-35 part;
Nanometer reinforcement powder 6-8 part;
Curing catalyst 1-3 part;
High efficient demoulding agent 1.3-3 part;
Mineral filler 5-8 part.
2. the phenolaldehyde moulding compound avoiding sticking to mould according to claim 1, is characterized in that described resol is acid catalyzed and the quality % content of the free phenol thermoplastic novolac phenolic resin that is less than 1%.
3. the phenolaldehyde moulding compound avoiding sticking to mould according to claim 1, is characterized in that described solidifying agent is hexamethylenetetramine.
4. the phenolaldehyde moulding compound avoiding sticking to mould according to claim 1, is characterized in that described organic reinforced fiber was the lignocellulose of 80 mesh sieves.
5. the phenolaldehyde moulding compound avoiding sticking to mould according to claim 1, is characterized in that described nanometer reinforcement powder is nano-calcium carbonate.
6. the phenolaldehyde moulding compound avoiding sticking to mould according to claim 1, is characterized in that described curing catalyst is activated magnesia and/or calcium hydroxide.
7. the phenolaldehyde moulding compound avoiding sticking to mould according to claim 1, is characterized in that described high efficient demoulding agent is OP wax and/or ethylene bis stearic acid amide.
8. the phenolaldehyde moulding compound avoiding sticking to mould according to claim 1, is characterized in that described mineral filler is one or more the combination in light active calcium carbonate, talcum powder and kaolin.
9. can avoid a preparation method for the phenolaldehyde moulding compound of sticking to mould as claimed in claim 1, it is characterized in that comprising the following steps:
A) prepare substrate material, the resol 35-45 part taken by weight is dropped in pulverizer and pulverizes, obtain powder shaped substrate material;
B) compound is prepared, by the solidifying agent 6-8 part taken by weight, organic machine fortifying fibre 30-35 part, nanometer reinforcement powder 6-8 part, curing catalyst 1-3 part, high efficient demoulding agent 1.3-3 part and mineral filler 5-8 part in company with by steps A) the powder shaped substrate material that obtains introduces in kneader and mediates, and obtains compound;
C) plasticate, by by step B) compound that obtains introduces plasticator and plasticates, and control plasticating temperature and control is plasticated the time, be then cooled to room temperature, what obtain sheet treats granulation material;
D) granulation, by by step C) sheet that obtains treat that granulation material is introduced pulverizer and pulverized, then through screening, obtain the phenolaldehyde moulding compound can avoiding sticking to mould.
10. the preparation method avoiding the phenolaldehyde moulding compound of sticking to mould according to claim 9, is characterized in that step C) described in control plasticating temperature be that plasticating temperature is controlled as 90-110 DEG C; The described control time of plasticating is 5-8min by time controling of plasticating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107816.9A CN104725766A (en) | 2015-03-12 | 2015-03-12 | Adhesion-free phenolic moulding material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107816.9A CN104725766A (en) | 2015-03-12 | 2015-03-12 | Adhesion-free phenolic moulding material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104725766A true CN104725766A (en) | 2015-06-24 |
Family
ID=53450221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510107816.9A Pending CN104725766A (en) | 2015-03-12 | 2015-03-12 | Adhesion-free phenolic moulding material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104725766A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105949710A (en) * | 2016-06-30 | 2016-09-21 | 禹州市远大塑料电器有限责任公司 | Moisture-resistant phenolic molding material |
| CN106496928A (en) * | 2016-10-28 | 2017-03-15 | 苏州富通高新材料科技股份有限公司 | A kind of nanometer phenolic aldehyde resin and plastic and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948607A (en) * | 2010-10-14 | 2011-01-19 | 常熟东南塑料有限公司 | Glass fiber-free reinforced phenolic moulding compound |
| CN103554829A (en) * | 2013-10-21 | 2014-02-05 | 常熟东南塑料有限公司 | Antistatic phenolic moulding plastic |
-
2015
- 2015-03-12 CN CN201510107816.9A patent/CN104725766A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948607A (en) * | 2010-10-14 | 2011-01-19 | 常熟东南塑料有限公司 | Glass fiber-free reinforced phenolic moulding compound |
| CN103554829A (en) * | 2013-10-21 | 2014-02-05 | 常熟东南塑料有限公司 | Antistatic phenolic moulding plastic |
Non-Patent Citations (1)
| Title |
|---|
| 天津轻工业学院: "《塑料助剂》", 31 March 1997 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105949710A (en) * | 2016-06-30 | 2016-09-21 | 禹州市远大塑料电器有限责任公司 | Moisture-resistant phenolic molding material |
| CN106496928A (en) * | 2016-10-28 | 2017-03-15 | 苏州富通高新材料科技股份有限公司 | A kind of nanometer phenolic aldehyde resin and plastic and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101974198B (en) | Heat-resisting phenolic moulding compound | |
| CN101948607B (en) | Glass fiber-free reinforced phenolic moulding compound | |
| CN104045966A (en) | Phenolic molding plastic for electric baking pan housing and preparation method of phenolic molding plastic | |
| CN101343397A (en) | Halogen-free flame-proof phenolic plastic | |
| CN103102635A (en) | High efficiency halogen-free flame retardant unsaturated polyester molding material and preparation method thereof | |
| CN102020827A (en) | Phenolic moulding plastic for low-voltage apparatus | |
| CN101157794B (en) | Melamine resin modified unsaturated polyester mould plastic | |
| CN104045967A (en) | Phenolic molding plastic for gas meter rotor and preparation method of phenolic molding plastic | |
| CN101081922A (en) | Phenolic plastic and preparation technique thereof | |
| CN101575445B (en) | Low-temperature fast curing polyester moulding compound and preparation method thereof | |
| CN108129802A (en) | A kind of composition epoxy resin preparation method of semiconductor-sealing-purpose | |
| CN107353584A (en) | A kind of anti-mildew becomes phenolaldehyde moulding compound and preparation method thereof | |
| CN104725766A (en) | Adhesion-free phenolic moulding material and preparation method thereof | |
| MX2015007283A (en) | Thermally conductive plastic. | |
| CN103160071A (en) | Halogen-free flame-retardation phenolic fiber reinforced plastic composite material | |
| CN104448884A (en) | Flame-retardant graphene nanocomposite and preparation method thereof | |
| CN104725767B (en) | Phenolaldehyde moulding compound of fire-retardant resistance to wicking and preparation method thereof | |
| CN103642258B (en) | A kind of wood is moulded composite fire-proof sheet material | |
| KR102401893B1 (en) | Vinyl ester powder pre-preg | |
| CN104974528A (en) | Silicon resin based nanocomposite and preparation method thereof | |
| CN102408669B (en) | Fly ash fiber modified phenolic molding compound and manufacture method thereof | |
| CN105924893A (en) | Phenol formaldehyde molding compound for electric baking pans and preparation technique thereof | |
| CN107641303A (en) | A kind of low temperature FDM type 3D printings material, preparation and application | |
| CN103183917A (en) | Halogen-free flame-retardant thermosetting moulding compound filled with glass beads | |
| CN109467876A (en) | A kind of phenolaldehyde moulding compound |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150624 |