CN107556698B - A kind of high temperature resistant urea moulding material and preparation method thereof - Google Patents
A kind of high temperature resistant urea moulding material and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to polymer-modified technical fields, specifically, be related to a kind of high temperature resistant urea moulding material and preparation method thereof, the high temperature resistant urea moulding material includes following component by weight percentage: Lauxite 55-70%, inorganic filler 3-5%, wood pulp 25-30%, remaining be auxiliary agent；Wherein, the inorganic filler is one of calcium carbonate, zinc oxide and magnesia of coupling processing or a variety of.High temperature resistant urea moulding material of the present invention, inorganic filler has been used to improve the high temperature resistance of urea moulding material, the inorganic filler used is calcium carbonate, zinc oxide and magnesia, it is pre-processed by coupling, utilize charge transfer complex, so that coupling agent is closely connected on one side with inorganic filler particle, forms key with high molecular material on one side, inorganic filler particle is uniformly fixed to reach and be uniformly distributed around macromolecule.
Description
Technical field
The present invention relates to polymer-modified technical fields, in particular to a kind of high temperature resistant urea moulding material and its system
Preparation Method.
Background technique
Urea moulding material is one of amino film plastics, belongs to thermosetting plastics.Relative to three in amino film plastics
Melamine-formaldehyde moulding compound, urea moulding material prices of raw materials relative moderate, can freely colour, and surface hardness is high, finish
It is good, there is excellent heat-resisting, self-extinguishment, electric appliance index is higher, is patched by being largely used to make low pressure (≤250V) electric appliance
The products such as the products such as part, switch, lamp cap, the ring cover for processing bathroom toilet seat and recreation product such as dominoes.With
Since reform and opening-up, the improvement of people's housing condition, a large amount of colored electrical connectors installed in house are exactly to be molded by ureaformaldehyde
Material is made, instead of bakelite powder product before, in addition the closing cover of closet of urea moulding material instead of it is original it is wooden,
The ring cover of ABS is especially processed using thermosetting plastics urea moulding material in European a large amount of turn to, replaces thermoplastic ABS
With the market of PP plastics, demand accounts for 60% of total amount or so.
In the material index of urea moulding material in the application, mainly there are three characteristic indexs, ISO14527-3-1999 (E)
Load deformation temperature T1.8With load deformation temperature T8.0It is the temperature for indicating batten deformation under the conditions of different load, reflects
The heat resistance of material.Other two indexs are moulding compound shrinking percentage SM0(%) and post-shrinkage ratio S168h(%), respectively indicates batten
After processing is cooling after the shrinking percentage of size and 168h size shrinking percentage, be after embodying fabricated product, the size of product shape is steady
It is qualitative.Currently, the load deformation temperature T of the urea moulding material of Britain BIP preparation1.8Up to 133 DEG C, moulding compound shrinking percentage with
Post-shrinkage ratio is 0.76% and 0.45-0.5% respectively.
However, usually being processed under the high temperature conditions when processing low-voltage electrical apparatus connector using conventional urea moulding material
When, conventional urea moulding material will appear cracking, deformation phenomena such as, reduce the processing efficiency of low-voltage electrical apparatus connector, generate
A large amount of underproof products.
Therefore, it is badly in need of providing a kind of urea moulding material resistant to high temperature, so as to solve the deficiencies in the prior art.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of high temperature resistant urea moulding material, the load change of the urea moulding material
Shape temperature T1.8>=155 DEG C, load deformation temperature T8.0>=110 DEG C, and the shrinking percentage S of urea moulding materialM0And S168hIt is positively retained at
0.4-0.6% and 0.5-0.5% has excellent high temperature resistance.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of high temperature resistant urea moulding material includes following component by weight percentage:
Lauxite 55-70%；
Inorganic filler 3-5%；
Wood pulp 24-30%；
Wherein, the inorganic filler is one of calcium carbonate, zinc oxide and magnesia of coupling processing or a variety of.
Compared with the existing technology, high temperature resistant urea moulding material of the present invention has used inorganic filler to improve ureaformaldehyde
The high temperature resistance of moulding compound, the inorganic filler used are pre-processed by coupling for calcium carbonate, zinc oxide and magnesia, are utilized
Charge transfer complex makes coupling agent be closely connected on one side with inorganic filler particle, key is formed with high molecular material on one side, by nothing
Machine filler grain is uniformly fixed to reach and be uniformly distributed around macromolecule.
Preferably, the partial size of the calcium carbonate is 0.03-0.08 μm, and the partial size of the zinc oxide is 20-40 μm, the oxygen
The partial size for changing magnesium is 10-20 μm.
Preferably, the high temperature resistant urea moulding material includes following component by weight percentage:
Lauxite 55-70%；
Inorganic filler 3-5%；
Wood pulp 24-30%；
Pigment 0.5-1.5%；
Curing agent 0.5-2%；
Release agent 0.5-1.5%；
Methenamine 3-5%.
Preferably, the pigment is that gorgeous beauty is yellow, gorgeous beauty is red, gorgeous beauty orchid, titanium dioxide, one of permanent violet or more
Kind, the curing agent is sulfamic acid organic amine esters curing agent or acid anhydride type curing agent, and the release agent is zinc stearate, firmly
One of resin acid, ethylene bis stearic acid amide are a variety of.
According to demand, different pigment formulas can be used；Titanium dioxide is both coloring filler and weatherability filling
Ultraviolet light can be reflected and be absorbed to agent, improve the weatherability of high temperature resistant urea moulding material.Zinc stearate, stearic acid, ethylene are double hard
Resin acid amide not only can be used as thermostabilization and, but also lubricant when being material depanning.
Preferably, the coupling agent of the coupling processing is silane coupling agent or titante coupling agent.
Having simultaneously in the molecule of silane coupling agent can be with inanimate matter material (such as inorganic filler) chemically combined reaction
Group and with organic material (such as high molecule plastic) chemically combined reactive group, the addition of silane coupling agent can improve nothing
Dispersibility and bonding force of the machine filler in resin improve the compatibility between inorganic filler and resin, improve processing performance simultaneously
Improve machinery, electricity and the weatherability etc. of plastics.
There is long carbon bond alkyl group, flexibility is good, can be bent with organic polymer chain in titante coupling agent
It tangles, improves the compatibility between organic polymer and inorganic filler, improve the impact strength of material；And metatitanic acid
Contain hydroxyl, amino, epoxy group or double bond containing group in esters coupling agent, is connected to the end of metatitanic acid ester molecule, Ke Yiyu
Organic polymer is chemically reacted and is combined together, and compatibility is further improved；And inorganic filler can be made to be lived
Change processing improves processing performance etc. to improve loading.
Preferably, the dosage of the coupling agent accounts for the 0.2%-0.5% of inorganic filler quality.
The dosage of coupling agent can effectively ensure that inorganic filler uniformly dividing around urea moulding material within the scope of this
Cloth also avoids coupling agent dosage excessive, and superfluous coupling agent declines plastics performance.
The second object of the present invention is to provide the preparation method of high temperature resistant urea moulding material described in one kind, this method general
Inorganic filler carries out coupling processing in advance, and inorganic filler is uniformly distributed in urea moulding material, the compatibility with ureaformaldehyde mould resin
It is good, effectively improve the high temperature resistance of urea moulding material.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of preparation method of high temperature resistant urea moulding material, comprising the following steps:
A) inorganic filler is dried；
B) under high velocity agitation, coupling agent is sprayed into inorganic filler, is then stirred for 0.1-2h, obtains the nothing of coupling processing
Machine filler；
C) Lauxite, the inorganic filler of coupling processing, wood pulp, pigment, curing agent, release agent, methenamine are mixed
It mediates, vacuum dehydration；
D) by dewatered particle drying, high temperature resistant urea moulding material is obtained.
Inorganic filler is carried out coupling processing by the preparation method of high temperature resistant urea moulding material of the invention in advance, inorganic to fill out
Material is uniformly distributed in urea moulding material, good with the compatibility of urea moulding material, effectively improves the heat-resisting quantity of urea moulding material
Energy.
Preferably, the preparation method of the high temperature resistant urea moulding material, further includes following steps:
E) by the Particle Breakage after the drying process of step d) at the particulate of default fineness, and under vacuum conditions by particulate
Gas solid separation is carried out, solid phase particulate is collected；
F) ball milling is carried out to solid phase particulate, discharging carries out wet granulation after ball milling, and then particle is dried；
G) whole grain, sub-sieve are carried out to the particle after drying in step f), collects the graininess high temperature resistant of certain particle size range
Urea moulding material, packed products obtain high temperature resistant urea moulding material particle.
The high temperature resistant urea moulding material being prepared further is granulated processing by above-mentioned steps, obtains satisfactory particle
The high temperature resistant urea moulding material of shape.
Preferably, inorganic filler is dried in the step a), make its be dried at 120 DEG C water content≤
0.3%.
Since the fineness of inorganic filler is high, large specific surface area is easy moisture absorption during processing and storage, absorbs in air
Moisture and cause moisture content to increase；After drying, the excessively high coupling for influencing inorganic filler of water content is avoided.
Preferably, in the step b) coupling agent dosage be inorganic filler quality 0.2%-0.5%.
Preferably, ureaformaldehyde mould resin in the step c), the inorganic filler of coupling processing, wood pulp, pigment, curing agent, de-
Mould agent, methenamine dosage be respectively as follows: 3-5%, 24-30%, 0.5-1.5%, 0.5-2%, 0.5- by mass percentage
1.5%, 3-5%.
Preferably, vacuum dehydration to water content is lower than 30% in the step c).
Preferably, dewatered particle drying to water content is lower than 4% in the step d).
Preferably, the particle that wet granulation obtains is dried in the step f), make its water content 3.7 ±
0.2%.
Preferably, the graininess high temperature resistant urea moulding material of 12-60 mesh is collected in the step g), packed products are greater than
Again whole grain, sub-sieve, the fine grained less than 60 mesh re-start wet granulation to the coarse granule of 12 mesh.
Compared with prior art, the invention has the benefit that
(1) calcium carbonate, zinc oxide and magnesia inorganic filler are added in ureaformaldehyde mould resin, are effectively increased and are prepared
Urea moulding material high temperature resistance；
(2) inorganic filler for using coupling processing, is pre-processed by coupling, using charge transfer complex, makes coupling agent
It is closely connected on one side with inorganic filler particle, forms key with high molecular material on one side, inorganic filler particle is uniformly fixed to
Reach and be uniformly distributed around macromolecule；
(3) after being added to the calcium carbonate, zinc oxide and magnesia of coupling processing, the load for the urea moulding material being prepared
Deformation temperature T1.8>=155 DEG C, load deformation temperature T8.0≥110℃。
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
High temperature resistant urea moulding material provided in this embodiment, the dosage of each raw material are respectively as follows:
Lauxite 643kg, inorganic filler 30kg, wood pulp 265kg, titanium dioxide 10kg, sulfamic acid organic amine esters are solid
Agent 5kg, zinc stearate 7kg, methenamine 40kg.
Wherein, the inorganic filler is the magnesia of coupling processing, and the magnesia partial size is 10-20 μm, and magnesia contains
Amount >=99.5%, calcium oxide content≤0.05%, iron content < 0.01%, specific surface area are 70 ± 20m2/ g, calcination loss≤
0.5%, loss on drying≤0.5%, sulphates content 0.02%.The coupling agent is silane coupling agent, the coupling agent
Dosage accounts for the 0.2% of inorganic filler quality.
Embodiment 2
High temperature resistant urea moulding material provided in this embodiment, the dosage of each raw material are respectively as follows:
Lauxite 643kg, inorganic filler 30kg, wood pulp 265kg, titanium dioxide 10kg, sulfamic acid organic amine esters are solid
Agent 5kg, zinc stearate 7kg, methenamine 40kg.
Wherein, the inorganic filler is the zinc oxide of coupling processing, and the zinc oxide average grain diameter is 30 ± 10 μm, compares table
Area > 35m2/ g, purity >=99.9%, dry loss of weight≤0.3%, the content of PbO therein in terms of Pb≤0.0001%, MnO
Content in terms of Mn≤content of 0.0001%, CuO in terms of Cu≤0.0001%.The coupling agent is silane coupling agent, institute
The dosage for stating coupling agent accounts for the 0.2% of inorganic filler quality.
Embodiment 3
High temperature resistant urea moulding material provided in this embodiment, the dosage of each raw material are respectively as follows:
Lauxite 650kg, inorganic filler 35kg, wood pulp 250kg, gorgeous beauty's Huang 0.5kg, titanium dioxide 4.5kg, liquid acid
Anhydride curing agent 10kg, zinc stearate 10kg, methenamine 40kg.The liquid acid anhydride type curing agent is to be dissolved in ethyl acetate
The mixture of acid anhydride type curing agent and solvent in equal organic solvents, the acid anhydride type curing agent occupy the quality point of solvent
Number is 30%-60%.
Wherein, the inorganic filler is the calcium carbonate of coupling processing, and the average grain diameter of the calcium carbonate is 0.03-0.08 μ
M, specific surface area 30-37m2/ g, oil factor 23-36mL/100g, pH value 8.3-9.0, calcination loss 44-46% burn
Calcium oxide content 52-54% after burning, iron, aluminium oxide content 0.2%.The coupling agent is titante coupling agent, described
The dosage of coupling agent accounts for the 0.3% of inorganic filler quality.
Embodiment 4
High temperature resistant urea moulding material provided in this embodiment, the dosage of each raw material are respectively as follows:
Lauxite 640kg, inorganic filler 35kg, wood pulp 255kg, gorgeous beauty's Huang 0.5kg, titanium dioxide 7.5kg, amino sulphur
Sour organic amine esters curing agent 10kg, zinc stearate 7kg, methenamine 45kg.
Wherein, the inorganic filler is the magnesia of coupling processing, and the coupling agent is titante coupling agent, the idol
The dosage of connection agent accounts for the 0.3% of inorganic filler quality.
Embodiment 5
High temperature resistant urea moulding material provided in this embodiment, the dosage of each raw material are respectively as follows:
Lauxite 650kg, inorganic filler 35kg, wood pulp 255kg, gorgeous beauty's Huang 0.5kg, titanium dioxide 7.5kg, amino sulphur
Sour organic amine esters curing agent 10kg, zinc stearate 7kg, methenamine 35kg.
Wherein, the inorganic filler is the zinc oxide of coupling processing, and the coupling agent is titante coupling agent, the idol
The dosage of connection agent accounts for the 0.3% of inorganic filler quality.
Embodiment 6
High temperature resistant urea moulding material provided in this embodiment, the dosage of each raw material are respectively as follows:
Lauxite 623kg, inorganic filler 40kg, wood pulp 260kg, titanium dioxide 15kg, sulfamic acid organic amine esters are solid
Agent 15kg, zinc stearate 7kg, methenamine 40kg.
Wherein, the inorganic filler is the calcium carbonate of coupling processing, and the coupling agent is silane coupling agent, the coupling
The dosage of agent accounts for the 0.5% of inorganic filler quality.
Embodiment 7
High temperature resistant urea moulding material provided in this embodiment, the dosage of each raw material are respectively as follows:
Lauxite 643kg, inorganic filler 40kg, wood pulp 255kg, titanium dioxide 10kg, sulfamic acid organic amine esters are solid
Agent 10kg, zinc stearate 7kg, methenamine 35kg.
Wherein, the inorganic filler is the magnesia of coupling processing, and the coupling agent is silane coupling agent, the coupling
The dosage of agent accounts for the 0.5% of inorganic filler quality.
Embodiment 8
High temperature resistant urea moulding material provided in this embodiment, the dosage of each raw material are respectively as follows:
Lauxite 638kg, inorganic filler 50kg, wood pulp 250kg, titanium dioxide 10kg, sulfamic acid organic amine esters are solid
Agent 5kg, zinc stearate 7kg, methenamine 40kg.
Wherein, the inorganic filler is the zinc oxide of coupling processing, and the coupling agent is silane coupling agent, the coupling
The dosage of agent accounts for the 0.5% of inorganic filler quality.
Embodiment 9
The preparation method of high temperature resistant urea moulding material described in embodiment 1-8, comprising the following steps:
A) inorganic filler is dried；Specifically, inorganic filler is put into high-speed mixer, collet leads to 0.1-
The steam of 0.15MPa opens stirring and low-speed running, is then turned on vacuum suction and is dried, drying time about two hours, make
Inorganic filler is dried to water content≤0.3% at 120 DEG C.
B) after drying, the vacuum condition of high-speed mixer is released, and blender is subjected to high-speed cruising, revolving speed is greater than
800rpm/min, and sprayed into appropriateness diluted coupling agent in high-speed mixer by the compressed air of 0.1MPa, make inorganic fill out
Material is coupled with coupling agent, then the steam of high-speed mixer collet is switched to room temperature cooling by stirring coupling 20min or so
Water stirs at low speed about 1h, obtains the inorganic filler of coupling processing, spare.
C) Lauxite is put into kneader, then put into step b) obtained in coupling processing inorganic filler with
And wood pulp, pigment, curing agent, release agent, methenamine carry out kneading dipping, vacuum dehydration controls temperature of charge in 58-63
DEG C, vacuum degree is improved to -0.88bar by atmospheric pressure and steps up -0.95bar again, and dehydration terminates substantially, aqueous in material
Amount is lower than 30%, discharges after temperature of charge is reduced to 54 DEG C.
D) the obtained material of step c) is sent to drier and is dried, hot blast temperature controls 85-95 DEG C, heating time
2.5h obtains the dried granules that water content is lower than 4%.This is primarily due to, the material after kneading, be belong to it is a degree of pre-
Polycondensation substance, water content continue condensation polymerization reaction in the drying process, reach molecular weight and constantly increase still 24 ± 1%
Big process, while being also constantly to reduce by formaldehyde weak solution bring moisture content, while removing continued polycondensation again and closing the contracting generated
Heshui, after completing chemical reaction, material starts particle that is loose, and being presented not of uniform size, and water content is lower than 4%.
E) particle not of uniform size that will be dried to obtain in step d) is broken into the particle of 1mm partial size, and passes through high speed powder
Broken machine carries out high speed crushing in 3000rpm/min, and particulate is then carried out gas solid separation, collects solid phase particulate.
F) by the continuous 5h ball milling of solid phase particulate obtained in step e), material is made to reach certain fineness, coarse powder substantially subtracts
It is few；Again with 80 mesh wire mesh screens powder, the material made is more fine and glossy；Then wet granulation is carried out, material is carried out after wet granulation
It is dry, make its water content 3.7 ± 0.2%.
G) whole grain, sub-sieve are carried out to the particle after drying in step f), collects the graininess high temperature resistant ureaformaldehyde mould of 12-60 mesh
Plastics, packed products, greater than the coarse granules of 12 mesh, whole grain, sub-sieve, the fine grained less than 60 mesh re-start wet granulation again.
Wherein, in the step c) Lauxite the preparation method comprises the following steps:
Formaldehyde weak solution and the 480kg urea that 900kg mass fraction is 37% are weighed respectively, and the formaldehyde of aforementioned quantities is put into
In reaction kettle, start agitating paddle, the sodium hydrate aqueous solution for being added 10% is adjusted to pH >=7.5, is then added into reaction kettle
Urea, Temperature fall opens steam valve until when temperature no longer changes under stirring conditions, is passed through in reaction kettle man set
The heating of 0.1MPa steam, as temperature of charge rises, urea is completely dissolved, and reaction solution tends to clarify；
When temperature of charge is increased to 30 DEG C, gradually steam off valve, until temperature of charge is increased to close completely at 35 DEG C
It closes steam and stops heating, the reaction was continued 60min, temperature of charge is increased to 60 DEG C, reaches reaction end, obtains the ureaformaldehyde tree
Rouge.
Experimental example 1
The resulting high temperature resistant urea moulding material of embodiment 1-8 is subjected to load deformation temperature test, and by each embodiment institute
Corresponding high temperature resistant urea moulding material is processed into graininess urea moulding material, carry out load deformation temperature and moulding compound shrinking percentage,
The test of post-shrinkage ratio, result are as shown in table 1 below.
The load deformation temperature and shrinking percentage parameter of the resulting high temperature resistant urea moulding material of 1 embodiment 1-8 of table
Simultaneously by taking embodiment 2 as an example, high temperature resistant urea moulding material corresponding to embodiment 2 is processed into graininess ureaformaldehyde mould
Plastics carry out the test of load deformation temperature and moulding compound shrinking percentage, post-shrinkage ratio, as a result as shown in table 2 below.
The load deformation temperature parameter of the resulting high temperature resistant urea moulding material of 2 embodiment of table 2
| Project | Embodiment 2 | Britain BIP |
| Load deformation temperature T1.8/℃ | 157 | 133 |
| Load deformation temperature T8.0/℃ | 111.5 | —— |
| Moulding compound shrinking percentage SM0(%) | 0.55-0.75 | 0.76 |
| Post-shrinkage ratio S168h(%) | 0.41-0.5 | 0.45-0.5 |
By above-mentioned table 1 it is found that in high temperature resistant urea moulding material of the invention, be added a certain amount of calcium carbonate, magnesia,
After zinc oxide, load deformation temperature T1.8With load deformation temperature T8.0It is greatly improved, the ureaformaldehyde of Britain BIP preparation can be surpassed
The load deformation temperature T of moulding compound1.8133 DEG C, illustrate high temperature resistant urea moulding material of the invention have fabulous heat resistance
Energy.And as shown in Table 2, the moulding compound shrinking percentage of high temperature resistant moulding compound of the invention processing is respectively reached with post-shrinkage ratio
0.55% and 0.41%, lower than the moulding compound shrinking percentage and post-shrinkage ratio of the urea moulding material of Britain BIP preparation, illustrate this hair
The good stability of the dimension of bright high temperature resistant urea moulding material fabricated product.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from of the invention
Many other change and modification can be made in the case where spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (7)
1. a kind of high temperature resistant urea moulding material, which is characterized in that be made by weight percentage of following component:
Lauxite 55-70%；
Inorganic filler 3-5%；
Wood pulp 24-30%；
Pigment 0.5-1.5%；
Curing agent 0.5-2%；
Release agent 0.5-1.5%；
Methenamine 3-5%；
The sum of above-mentioned each component is 100%；
Wherein, the inorganic filler is one of calcium carbonate, zinc oxide and magnesia of coupling processing or a variety of；
The method of the coupling processing includes:
A) inorganic filler is dried；
B) under high velocity agitation, coupling agent is sprayed into inorganic filler, is then stirred for 0.1-1h, obtains the inorganic of coupling processing and fill out
Material；
Inorganic filler is dried in the step a), it is made to be dried to water content≤0.3% at 120 DEG C；
The dosage of the coupling agent accounts for the 0.2%-0.5% of inorganic filler quality.
2. high temperature resistant urea moulding material according to claim 1, which is characterized in that the partial size of the calcium carbonate is 0.03-
0.08 μm, the partial size of the zinc oxide is 20-40 μm, and the partial size of the magnesia is 10-20 μm.
3. high temperature resistant urea moulding material according to claim 1, which is characterized in that the pigment is that gorgeous beauty is yellow, gorgeous good
One of beautiful red, gorgeous beauty orchid, titanium dioxide, permanent violet are a variety of, and the curing agent is the solidification of sulfamic acid organic amine esters
Agent or acid anhydride type curing agent, the release agent are one of zinc stearate, stearic acid, ethylene bis stearic acid amide or a variety of.
4. high temperature resistant urea moulding material according to claim 1, which is characterized in that the coupling agent of the coupling processing is silicon
Alkanes coupling agent or titante coupling agent.
5. the preparation method of the described in any item high temperature resistant urea moulding materials of claim 1-4, which is characterized in that including following step
It is rapid:
A) inorganic filler is dried；
B) under high velocity agitation, coupling agent is sprayed into inorganic filler, is then stirred for 0.1-1h, obtains the inorganic of coupling processing and fill out
Material；
C) by Lauxite, the inorganic filler of coupling processing, wood pulp, pigment, curing agent, release agent, methenamine mixer kneader,
Vacuum dehydration；
D) by dewatered particle drying, high temperature resistant urea moulding material is obtained.
6. the preparation method of high temperature resistant urea moulding material according to claim 5, which is characterized in that further include walking as follows
It is rapid:
E) by the Particle Breakage after the drying process of step d) at the particulate of default fineness, and particulate is carried out under vacuum conditions
Gas solid separation collects solid phase particulate；
F) ball milling is carried out to solid phase particulate, discharging carries out wet granulation after ball milling, and then particle is dried；
G) whole grain, sub-sieve are carried out to the particle after drying in step f), collects the graininess high temperature resistant ureaformaldehyde of certain particle size range
Moulding compound, packed products obtain high temperature resistant urea moulding material particle.
7. the preparation method of high temperature resistant urea moulding material according to claim 6, which is characterized in that true in the step c)
Sky dehydration to water content is lower than 30%；Dewatered particle drying to water content is lower than 4% in the step d)；The step f)
In the particle that wet granulation obtains is dried, make its water content 3.7 ± 0.2%.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412241A (en) * | 2001-10-16 | 2003-04-23 | 上海欧亚合成材料有限公司 | High temp. resistant inorganic fibre reinforced injection type phenolic moulding plastics |
| CN1958662A (en) * | 2006-10-30 | 2007-05-09 | 林良菽 | Plastic of phenolic aldehyde mould in no ammonia type, and manufacturing method |
| CN101974198A (en) * | 2010-10-14 | 2011-02-16 | 常熟东南塑料有限公司 | Heat-resisting phenolic moulding compound |
| CN103342830A (en) * | 2013-06-26 | 2013-10-09 | 中国科学院化学研究所 | Inorganic composite phenol modified urea formaldehyde resin foam and preparation method thereof |
| CN103937150A (en) * | 2014-04-20 | 2014-07-23 | 桂林电器科学研究院有限公司 | Fibrilia-reinforced injection-type phenol aldehyde molding compound and preparation method thereof |
| CN105086356A (en) * | 2014-05-22 | 2015-11-25 | 溧阳市乔森塑料有限公司 | Modified urea formaldehyde molding compound and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3050919A1 (en) * | 2015-01-29 | 2016-08-03 | Basf Se | Mixtures containing lignocellulosic materials with salts of n-substituted carbamic acids |
-
2017
- 2017-10-12 CN CN201710944710.3A patent/CN107556698B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412241A (en) * | 2001-10-16 | 2003-04-23 | 上海欧亚合成材料有限公司 | High temp. resistant inorganic fibre reinforced injection type phenolic moulding plastics |
| CN1958662A (en) * | 2006-10-30 | 2007-05-09 | 林良菽 | Plastic of phenolic aldehyde mould in no ammonia type, and manufacturing method |
| CN101974198A (en) * | 2010-10-14 | 2011-02-16 | 常熟东南塑料有限公司 | Heat-resisting phenolic moulding compound |
| CN103342830A (en) * | 2013-06-26 | 2013-10-09 | 中国科学院化学研究所 | Inorganic composite phenol modified urea formaldehyde resin foam and preparation method thereof |
| CN103937150A (en) * | 2014-04-20 | 2014-07-23 | 桂林电器科学研究院有限公司 | Fibrilia-reinforced injection-type phenol aldehyde molding compound and preparation method thereof |
| CN105086356A (en) * | 2014-05-22 | 2015-11-25 | 溧阳市乔森塑料有限公司 | Modified urea formaldehyde molding compound and preparation method thereof |
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