CN104045966A - Phenolic molding plastic for electric baking pan housing and preparation method of phenolic molding plastic - Google Patents
Phenolic molding plastic for electric baking pan housing and preparation method of phenolic molding plastic Download PDFInfo
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Abstract
The invention discloses phenolic molding plastic for an electric baking pan housing and a preparation method of the phenolic molding plastic, and belongs to the technical fields of thermosetting molding plastic and preparation thereof. The phenolic molding plastic is prepared from the following raw materials in parts by weight: 25-35 parts of phenolic resin, 3-6 parts of a curing agent, 10-30 parts of inorganic reinforced fiber, 5-10 parts of nano reinforcing powder, 1-3 parts of a curing accelerator, 1-2 parts of a coupling agent, 1-2 parts of a release agent, 5-10 parts of inorganic packing and 10-20 parts of toughening elastomer. The inorganic reinforced fiber and the inorganic packing are utilized in the formula, meanwhile, reasonable quantity of curing accelerator is added, and the interfacial properties of the resin and the inorganic packing and the inorganic reinforced fiber are improved by proper coupling agent, so that the heat resistance of the material is improved. In addition, on the other hand, the brittleness of the phenolic molding plastic is compensated by adding the toughening elastomer, and the tenacity is obviously improved. Thus, the ability of resisting cold and hot cycle of the phenolic molding plastic is improved, and the phenolic molding plastic is completely applicable to manufacturing of the electric baking pan housing.
Description
Technical field
The invention belongs to duroplastic moulding materials and preparing technical field thereof, be specifically related to a kind of electric baking pan shell phenolaldehyde moulding compound, and relate to its preparation method.
Background technology
Phenolaldehyde moulding compound is that to take novolac resin or heat-reactive phenolic resin be matrix, adds 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 more than 100 years.Raw material sources based on them are wider, production technique is terse and equipment is simple, forming process is good, price is cheaper, and can obtain very good resistance toheat, mechanical property, electrical property, thermal characteristics, ablation property, chemical property and radiation resistance by all means, especially there is good flame retardant properties, the low rate of being fuming, seldom produce obnoxious flavour, become machinery, electric, building, mining, national defence and the indispensable material of other industrial sector.
Phenolaldehyde moulding compound is that cooker industry is for the manufacture of the important formed material of cooker handgrip, shell.Due to electric baking pan shell in use temperature remain on for a long time more than 250 ℃, when not using, can be cooled to room temperature again, thereby not only require sheating material to there is good resistance toheat, also require to there is excellent cold-hot cycle performance.The resistance toheat of common phenolaldehyde moulding compound is about 200 ℃ of left and right, cannot meet the heat-resisting requirement of electric baking pan shell, more can not reach required cold-hot circulation requirement.
In disclosed Chinese patent literature, can be seen in the technical intelligence of heat-resisting phenolic moulding compound, " heat-resisting phenolic moulding compound " (this patent is proposed by the applicant) of typically recommending as invention patent mandate notification number CN101974198B.The resistance toheat of the phenolaldehyde moulding compound that this technical scheme obtains can meet the high temperature resistant requirement of electric baking pan shell, but, because phenolaldehyde moulding compound exists, fragility is large, the congenital deficiency of poor toughness, thereby in the time being applied to electric baking pan sheating material, the poor weakness of heat-resisting circulation ability just exposes very soon.
When utilizing the aforementioned strong point of phenolaldehyde moulding compound, how to make up fragility and improve toughness and use expanded application scope and become the technical problem that industry is paid close attention to and expectation solves.For this reason, the applicant has carried out time consuming exploration and trial, has finally formed technical scheme described below.
Summary of the invention
Top priority of the present invention is to provide to be had excellent resistance toheat and cold-hot cycle performance and uses the electric baking pan shell phenolaldehyde moulding compound of expanding range of application.
Another task of the present invention is to provide the preparation method of a kind of electric baking pan shell with phenolaldehyde moulding compound, and the method processing step is succinct, without relying on that complicated equipment, technical factor easily controlled and phenolaldehyde moulding compound not harsh and that can make to obtain meets electric baking pan sheating material and needs in use the excellent thermotolerance and the requirement of cold-hot cycle performance that possess.
Task of the present invention completes like this, a kind of electric baking pan shell phenolaldehyde moulding compound, and it is that raw material by following parts by weight proportioning forms:
In a specific embodiment of the present invention, described resol is thermoplastic novolac phenolic resin; Described solidifying agent is hexamethylenetetramine.
In another specific embodiment of the present invention, described inorganic reinforcing fiber is that length is the alkali-free short glass fiber of 3mm.
In another specific embodiment of the present invention, described nanometer reinforcement powder is nano-calcium carbonate.
In another specific embodiment of the present invention, described curing catalyst is magnesium oxide and/or calcium hydroxide.
Of the present invention, also have in a specific embodiment, described coupling agent is one or more combination of titanate coupling agent, aluminate coupling agent and silane coupling agent; Described titanate coupling agent is KR-12, and described aluminate coupling agent is LD-802; Described silane coupling agent is KH-602.
More of the present invention and in a specific embodiment, described releasing agent is one or more combination of Zinc Stearate, calcium stearate, magnesium stearate and aluminum foil stearate.
In of the present invention and then a specific embodiment, described mineral filler is one or more the combination in water-ground limestone, aluminium hydroxide or kaolin.
Of the present invention again more and in a specific embodiment, described toughening elastic body is silicon rubber.
Another task of the present invention completes like this, and the preparation method of phenolaldehyde moulding compound for a kind of electric baking pan shell, comprises the following steps:
A) prepare substrate material, the resol 25-35 part taking is by weight dropped in pulverizer and pulverized, obtain the substrate material of powdery;
B) prepare compound, by the solidifying agent 3-6 part taking by weight, inorganic reinforcing fiber 10-30 part, nanometer reinforcement powder 5-10 part, curing catalyst 1-3 part, coupling agent 1-2 part, releasing agent 1-2 part, mineral filler 5-10 part and toughening elastic body 10-20 part in company with by steps A) substrate material of the powder shaped that obtains introduces in kneader and mediates, and obtains compound;
C) plasticate, by by step B) compound that obtains introduces plasticator and plasticates, and plasticating temperature is controlled as 90-110 ℃, and the time of plasticating is controlled as 5-10min, is then cooled to room temperature, and what obtain sheet treats granulation material;
D) granulation, by by step C) the granulation material for the treatment of of the sheet that obtains introduces pulverizer and pulverizes, then through screening, obtain electric baking pan shell phenolaldehyde moulding compound.
Technical scheme provided by the invention is owing to having used inorganic reinforcing fiber and mineral filler in formula, the curing catalyst that has simultaneously added reasonable amount, add suitable coupling agent and improved the interface performance of resin and mineral filler and inorganic reinforcing fiber, thereby improved the resistance toheat of material.On the one hand due to the adding of toughening elastic body, made up the fragility of phenolaldehyde moulding compound in addition, toughness is significantly improved.Thereby the cold-hot circulation ability that has improved phenolaldehyde moulding compound, is applicable to the manufacture of electric baking pan shell completely.
Embodiment
Embodiment 1:
A) prepare substrate material, by pulverizing in 35 parts of input pulverizers of the thermoplastic novolac phenolic resin taking by weight, obtain the substrate material of powdery;
B) prepare compound, by 6 parts of the hexamethylenetetramines taking by weight, length, be that 20 parts of 3mm alkali-free short glass fibers, 5 parts of nano-calcium carbonates, 2 parts, magnesium oxide, aluminate coupling agent LD-802[LD-802 are (methyl aceto acetate base) diisopropoxy Aluminate] 1.5 parts, 1.5 parts of Magnesium Stearates, 8 parts of water-ground limestones and 20 parts of companions of silicon rubber are by steps A) powdery that obtains is that the substrate material of powder shaped is introduced in kneader and mediated (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (mixing) on the twin-roll plastic mixing mill of two rollings, and plasticating temperature is 90 ℃, and the time of plasticating is 10min, is then cooled to room temperature, and what obtain sheet treats granulation material;
D) granulation, by by step C) the granulation material for the treatment of of the sheet that obtains introduces pulverizer and pulverizes, then through screening, obtain electric baking pan shell phenolaldehyde moulding compound.
If at step B) in add parts by weight be the tinting material of required color of 1.4-1.6 part as ink, can obtain so colored is the electric baking pan shell phenolaldehyde moulding compound of respective color.
Embodiment 2:
A) prepare substrate material, by pulverizing in 30 parts of input pulverizers of the thermoplastic novolac phenolic resin taking by weight, obtain the substrate material of powdery;
B) prepare compound, by 5 parts of the hexamethylenetetramines taking by weight, length, be that 30 parts of 3mm alkali-free short glass fibers, 10 parts of nano-calcium carbonates, 1.8 parts, calcium hydroxide, silane coupling agent KH-602[KH-602 are N-β-(aminoethyl)-γ-aminopropyl methyl dimethoxysilane] 2 parts, 1.3 parts of Zinic stearass, 5 parts of water-ground limestones and 10 parts of companions of silicon rubber are by steps A) powdery that obtains is that the substrate material of powder shaped is introduced in kneader and mediated (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (mixing) on the twin-roll plastic mixing mill of two rollings, and plasticating temperature is 110 ℃, 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) the granulation material for the treatment of of the sheet that obtains introduces pulverizer and pulverizes, then through screening, obtain electric baking pan shell phenolaldehyde moulding compound.
If at step B) in add parts by weight be the tinting material of required color of 1.4-1.6 part as ink, can obtain so colored is the electric baking pan shell phenolaldehyde moulding compound of respective color.
Embodiment 3:
A) prepare substrate material, by pulverizing in 28 parts of input pulverizers of the thermoplastic novolac phenolic resin taking by weight, obtain the substrate material of powdery;
B) prepare compound, by 3 parts of the hexamethylenetetramines taking by weight, length, be that 28 parts of 3mm alkali-free short glass fibers, 6 parts of nano-calcium carbonates, 3 parts, magnesium oxide, titanate coupling agent KR-12[KR-12 are sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester] 1 part, 1 part of Magnesium Stearate, 0.8 part of aluminum stearate, 7 parts of water-ground limestones and 18 parts of companions of silicon rubber are by steps A) powdery that obtains is that the substrate material of powder shaped is introduced in kneader and mediated (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (mixing) on the twin-roll plastic mixing mill of two rollings, and plasticating temperature is 90 ℃, 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) the granulation material for the treatment of of the sheet that obtains introduces pulverizer and pulverizes, then through screening, obtain electric baking pan shell phenolaldehyde moulding compound.
If at step B) in add parts by weight be the tinting material of required color of 1.4-1.6 part as ink, can obtain so colored is the electric baking pan shell phenolaldehyde moulding compound of respective color.
Embodiment 4:
A) prepare substrate material, by pulverizing in 25 parts of input pulverizers of the thermoplastic novolac phenolic resin taking by weight, obtain the substrate material of powdery;
B) prepare compound, by 4 parts of the hexamethylenetetramines taking by weight, length, being that 10 parts of 3mm alkali-free short glass fibers, 8 parts of nano-calcium carbonates, 1.2 parts, magnesium oxide, 1.2 parts, calcium hydroxide, titanate coupling agent KR-120.9 part, aluminate coupling agent LD-8020.8 part, 1.2 parts of calcium stearates, 0.5 part of aluminum stearate, 0.5 part of Magnesium Stearate, 6 parts of water-ground limestones and 14 parts of companions of silicon rubber are by steps A) powdery that obtains is that the substrate material of powder shaped is introduced in kneader and mediated (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (mixing) on the twin-roll plastic mixing mill of two rollings, and plasticating temperature is 95 ℃, 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) the granulation material for the treatment of of the sheet that obtains introduces pulverizer and pulverizes, then through screening, obtain electric baking pan shell phenolaldehyde moulding compound.
If at step B) in add parts by weight be the tinting material of required color of 1.4-1.6 part as ink, can obtain so colored is the electric baking pan shell phenolaldehyde moulding compound of respective color.
Embodiment 5:
A) prepare substrate material, by pulverizing in 32 parts of input pulverizers of the thermoplastic novolac phenolic resin taking by weight, obtain the substrate material of powdery;
B) prepare compound, by 5 parts of the hexamethylenetetramines taking by weight, length, being that 25 parts of 3mm alkali-free short glass fibers, 7 parts of nano-calcium carbonates, 0.5 part, magnesium oxide, 0.5 part, calcium hydroxide, titanate coupling agent KR-120.8 part, silane coupling agent KH-6020.6 part, 0.25 part of calcium stearate, 0.25 part of Magnesium Stearate, 0.25 part of aluminum stearate, 0.25 part of Zinic stearas, 10 parts of water-ground limestones and 16 parts of companions of silicon rubber are by steps A) powdery that obtains is that the substrate material of powder shaped is introduced in kneader and mediated (kneading is mixing), obtains compound;
C) plasticate, by by step B) compound that obtains plasticates (mixing) on the twin-roll plastic mixing mill of two rollings, and plasticating temperature is 100 ℃, 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) the granulation material for the treatment of of the sheet that obtains introduces pulverizer and pulverizes, then through screening, obtain electric baking pan shell phenolaldehyde moulding compound.
If at step B) in add parts by weight be the tinting material of required color of 1.4-1.6 part as ink, can obtain so colored is the electric baking pan shell phenolaldehyde moulding compound of respective color.
By the resulting electric baking pan shell of above-described embodiment 1-5, with phenolaldehyde moulding compound, there is after tested the technical indicator shown in following table.
Claims (10)
1. an electric baking pan shell phenolaldehyde moulding compound, is characterized in that it is that raw material by following parts by weight proportioning forms:
Resol 25-35 part;
Solidifying agent 3-6 part;
Inorganic reinforcing fiber 10-30 part;
Nanometer reinforcement powder 5-10 part;
Curing catalyst 1-3 part;
Coupling agent 1-2 part;
Releasing agent 1-2 part;
Mineral filler 5-10 part;
Toughening elastic body 10-20 part.
2. electric baking pan shell phenolaldehyde moulding compound according to claim 1, is characterized in that described resol is thermoplastic novolac phenolic resin; Described solidifying agent is hexamethylenetetramine.
3. electric baking pan shell phenolaldehyde moulding compound according to claim 1, is characterized in that described inorganic reinforcing fiber is that length is 3mm alkali-free short glass fiber.
4. electric baking pan shell phenolaldehyde moulding compound according to claim 1, is characterized in that described nanometer reinforcement powder is nano-calcium carbonate.
5. electric baking pan shell phenolaldehyde moulding compound according to claim 1, is characterized in that described curing catalyst is magnesium oxide and/or calcium hydroxide.
6. electric baking pan shell phenolaldehyde moulding compound according to claim 1, is characterized in that described coupling agent is one or more combination of titanate coupling agent, aluminate coupling agent and silane coupling agent; Described titanate coupling agent is KR-12, and described aluminate coupling agent is LD-802; Described silane coupling agent is KH-602.
7. electric baking pan shell phenolaldehyde moulding compound according to claim 1, is characterized in that described releasing agent is one or more combination of Zinc Stearate, calcium stearate, magnesium stearate and aluminum foil stearate.
8. electric baking pan shell phenolaldehyde moulding compound according to claim 1, is characterized in that described mineral filler is one or more the combination in water-ground limestone, aluminium hydroxide or kaolin.
9. electric baking pan shell phenolaldehyde moulding compound according to claim 1, is characterized in that described toughening elastic body is silicon rubber.
10. a preparation method for phenolaldehyde moulding compound for electric baking pan shell as claimed in claim 1, is characterized in that comprising the following steps:
A) prepare substrate material, the resol 25-35 part taking is by weight dropped in pulverizer and pulverized, obtain the substrate material of powdery;
B) prepare compound, by the solidifying agent 3-6 part taking by weight, inorganic reinforcing fiber 10-30 part, nanometer reinforcement powder 5-10 part, curing catalyst 1-3 part, coupling agent 1-2 part, releasing agent 1-2 part, mineral filler 5-10 part and toughening elastic body 10-20 part in company with by steps A) substrate material of the powder shaped that obtains introduces in kneader and mediates, and obtains compound;
C) plasticate, by by step B) compound that obtains introduces plasticator and plasticates, and plasticating temperature is controlled as 90-110 ℃, and the time of plasticating is controlled as 5-10min, is then cooled to room temperature, and what obtain sheet treats granulation material;
D) granulation, by by step C) the granulation material for the treatment of of the sheet that obtains introduces pulverizer and pulverizes, then through screening, obtain electric baking pan shell phenolaldehyde moulding compound.
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| CN201410253622.5A CN104045966A (en) | 2014-06-10 | 2014-06-10 | Phenolic molding plastic for electric baking pan housing and preparation method of phenolic molding plastic |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104725767A (en) * | 2015-03-12 | 2015-06-24 | 常熟东南塑料有限公司 | Flame resistant and tin-dipping resistant phenolic moulding plastic and preparation method thereof |
| CN104927296A (en) * | 2015-06-08 | 2015-09-23 | 安徽省金正塑业有限公司 | Antiflaming phenol formaldehyde plastic and preparation method thereof |
| CN105199311A (en) * | 2015-10-09 | 2015-12-30 | 国网山东省电力公司临沂供电公司 | Antiaging material for electric meter boxes |
| CN105924893A (en) * | 2016-06-30 | 2016-09-07 | 禹州市远大塑料电器有限责任公司 | Phenol formaldehyde molding compound for electric baking pans and preparation technique thereof |
| CN107353584A (en) * | 2017-07-26 | 2017-11-17 | 常熟东南塑料有限公司 | A kind of anti-mildew becomes phenolaldehyde moulding compound and preparation method thereof |
| CN110527245A (en) * | 2019-09-12 | 2019-12-03 | 常熟东南塑料有限公司 | A kind of phenolaldehyde moulding compound of high durable |
| CN111363302A (en) * | 2020-03-18 | 2020-07-03 | 常熟东南塑料有限公司 | Phenolic molding compound reinforced by phenolic molding compound reclaimed material powder |
| CN112876806A (en) * | 2021-02-09 | 2021-06-01 | 常熟东南塑料有限公司 | Phenolic molding plastic toughened by PET reclaimed materials |
| CN112898728A (en) * | 2021-02-10 | 2021-06-04 | 常熟东南塑料有限公司 | Oil-resistant heat-resistant dimensionally stable phenolic moulding compound |
| CN112898727A (en) * | 2021-02-10 | 2021-06-04 | 常熟东南塑料有限公司 | Preparation method of oil-resistant heat-resistant dimensionally stable phenolic molding compound |
| CN113024990A (en) * | 2021-03-19 | 2021-06-25 | 常熟东南塑料有限公司 | High-toughness flame-retardant heat-resistant phenolic molding compound and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725767A (en) * | 2015-03-12 | 2015-06-24 | 常熟东南塑料有限公司 | Flame resistant and tin-dipping resistant phenolic moulding plastic and preparation method thereof |
| CN104927296A (en) * | 2015-06-08 | 2015-09-23 | 安徽省金正塑业有限公司 | Antiflaming phenol formaldehyde plastic and preparation method thereof |
| CN105199311A (en) * | 2015-10-09 | 2015-12-30 | 国网山东省电力公司临沂供电公司 | Antiaging material for electric meter boxes |
| CN105924893A (en) * | 2016-06-30 | 2016-09-07 | 禹州市远大塑料电器有限责任公司 | Phenol formaldehyde molding compound for electric baking pans and preparation technique thereof |
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| CN111363302A (en) * | 2020-03-18 | 2020-07-03 | 常熟东南塑料有限公司 | Phenolic molding compound reinforced by phenolic molding compound reclaimed material powder |
| CN112876806A (en) * | 2021-02-09 | 2021-06-01 | 常熟东南塑料有限公司 | Phenolic molding plastic toughened by PET reclaimed materials |
| CN112898728A (en) * | 2021-02-10 | 2021-06-04 | 常熟东南塑料有限公司 | Oil-resistant heat-resistant dimensionally stable phenolic moulding compound |
| CN112898727A (en) * | 2021-02-10 | 2021-06-04 | 常熟东南塑料有限公司 | Preparation method of oil-resistant heat-resistant dimensionally stable phenolic molding compound |
| CN113024990A (en) * | 2021-03-19 | 2021-06-25 | 常熟东南塑料有限公司 | High-toughness flame-retardant heat-resistant phenolic molding compound and preparation method thereof |
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Application publication date: 20140917 |