CN103203883A - Method for preparing honeycomb enhanced phenolic foam composite materials - Google Patents
Method for preparing honeycomb enhanced phenolic foam composite materials Download PDFInfo
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- CN103203883A CN103203883A CN2013100931352A CN201310093135A CN103203883A CN 103203883 A CN103203883 A CN 103203883A CN 2013100931352 A CN2013100931352 A CN 2013100931352A CN 201310093135 A CN201310093135 A CN 201310093135A CN 103203883 A CN103203883 A CN 103203883A
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Abstract
The invention relates to a method for preparing honeycomb enhanced phenolic foam composite materials. The method is characterized by including the steps of: (1) pouring phenolic resin foam composite into a die; (2) vertically placing a honeycomb in the phenolic resin foam composite in the die; (3) placing the die with the phenolic resin foam composite and the honeycomb in the step (2) into a baking oven at the temperature of 50-100 DEG C for foaming for 5-10h, and obtaining the honeycomb enhanced phenolic foam composite material. Via one-time soaking and heating consolidation, the method is capable of preparing the honeycomb enhanced foam composite materials with phenolic foam ingredients in the honeycomb materials and phenolic foam filled in honeycomb lattice holes, the operation procedure is extremely simple, only the die and the baking oven are utilized as equipment, so that the method has the advantages of efficiency and low cost, meanwhile, the composite material products can be guaranteed to have the advantages of good combination properties like light weight, sound insulation, heat insulation, specific strength, specific modulus, water resistance and flame retardance.
Description
Technical field
The present invention relates to a kind of preparation method of composite, relate in particular to a kind of preparation method of enhancement mode phenol formaldehyde foam composite.
Background technology
Phenol formaldehyde foam has lightweight, sound insulation and good characteristic such as heat insulation, and wherein the most outstanding characteristics are difficult combustion, low cigarette and high temperature resistance distortion; Because the foam of phenol formaldehyde foam is closed pore, and moisture and moisture are difficult to enter, therefore has the good advantage of resistance to water soak simultaneously.But also there are the relatively poor shortcomings of mechanical property such as shear strength and compressive strength in phenol formaldehyde foam.
Cellular material has good characteristics such as high specific strength and specific modulus, but also has many shortcomings, and for example because honeycomb is open-celled structure, air can carry out convection current in the honeycomb checkerwork cell makes that the honeycomb heat-insulating property is poor; More inapplicable wet processings or resin injection technology make honeycomb be restricted in fields such as boats and ships and wind-powered electricity generations; And honeycomb in use, can be because surface layer destroys, produce micro-flaw, cause seepage problem, further, under low temperature condition, the water that enters in the honeycomb hole is expanded by after freezing, destroy the bonding of contiguous honeycomb hole lattice, this has just reduced the performance of honeycomb sandwich construction, gives maintenance or the trouble of conversion materials more.
With cellular material and phenol formaldehyde foam combination, the preparation honeycomb strengthens the phenol formaldehyde foam composite, can have at phenol formaldehyde foam on the basis of characteristics such as lightweight, sound insulation and heat-proof quality, in conjunction with performances such as the high specific strength of honeycomb and specific modulus, obtain the excellent comprehensive performance, enlarge the application of composite.But, existing composite is honeycomb to be flooded be heating and curing separately behind the phenol formaldehyde foam foamed material and get, composite still keeps the checkerwork cell structure of honeycomb, still can cross-ventilation or liquid flow between checkerwork cell and the checkerwork cell, there are shortcomings such as waterproof, poor fire.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, provide a kind of operating process and equipment extremely simple, better guarantee the content of phenolic resins in the honeycomb checkerwork cell, thereby guarantee the uniformity of material monolithic density, can well guarantee the foam in place technology of the adhesive strength between foam and the honeycomb, finished thermal insulation, sound insulation, honeycomb water-fast and good flame resistance strengthen the preparation method of phenol formaldehyde foam composite.
For achieving the above object, the technical solution used in the present invention is: a kind of honeycomb strengthens the preparation method of phenol formaldehyde foam composite, it is characterized in that, comprise the steps: that (1) pour phenolic resins foaming combination material in the mould into, make described phenolic resins foaming combination material in mould, keep liquid level height unanimity; (2) honeycomb is vertically put into described mould, insert in the described phenolic resins foaming combination material; (3) step (2) mould that is equipped with described phenolic resins foaming combination material and honeycomb is put into 50 ℃-100 ℃ in baking oven, and 5h-10h foams, and makes described honeycomb enhancing phenol formaldehyde foam composite.
Preferably, in the step (2), in each honeycomb checkerwork cell of described honeycomb, the amount of described phenolic resins foaming combination material is identical.
Preferably, in the step (1), described mould bottom surface places horizontal plane.
Preferably, the axis normal of described honeycomb checkerwork cell is in the end face of described honeycomb, and the both ends of the surface of described honeycomb are parallel to each other.
Preferably, described honeycomb is non-metal honeycomb.
Preferably, the interior shape of described mould matches with the external shape of described honeycomb.
Preferably, the checkerwork cell of described honeycomb is rectangle or regular hexagon, and perhaps described honeycomb is flexible honeycomb.
Preferably, temperature of oven described in the step (3) is 60 ℃-80 ℃, foaming 6h-8h.
The invention solves the defective that exists in the background technology, have following beneficial effect:
1. preparation method of the present invention makes honeycomb strengthen in the honeycomb checkerwork cell of foamed composite and is filled with phenol formaldehyde foam, forms hole-closing structure, on the basis of legacy cellular premium properties, stops cross-ventilation, increases heat insulation, sound insulation value.Simultaneously, because the abscess of its closed-cell foam of phenol formaldehyde foam is separate, to air and the equal impermeable of liquid, can play waterproof effect on the one hand, make water and steam can not enter honeycomb inside, reduce the cost of maintenance test; On the other hand, can slow down the propagation of flame, flue gas, certain anti-flaming function is arranged, the amount of being fuming is low, and is safer, environmental protection.
2. the honeycomb of the inventive method preparation strengthens foamed composite, not only can enlarge the honeycomb scope of application, and honeycomb is strengthened the service life under particular surroundings, and cost more steps to a new level the serviceability of honeycomb more economically.
3. preparation method of the present invention, by once soaking into and being heating and curing, namely obtain comprising in the cellular material honeycomb that is filled with phenol formaldehyde foam in phenol formaldehyde foam composition, the while honeycomb checkerwork cell and strengthen foamed composite, operating process is extremely easy, equipment is also only used mould and baking oven, have efficiently, low-cost, can also guarantee that simultaneously composite finished product is in the advantage of the good combination property of lightweight, sound insulation, heat insulation, specific strength, specific modulus, heat insulation, sound insulation, aspect such as water-fast and fire-retardant.
4. preparation method of the present invention, honeycomb is inserted in the phenolic resins foaming combination material, be convenient to make the amount of the phenolic resins foaming combination material that is placed in each checkerwork cell of honeycomb to be consistent, guarantee the global density unanimity of composite, and then raising gained honeycomb strengthens quality and the standardization level of foamed composite, everywhere sound insulation of composite, correlated performance such as heat insulation, water-fast, fire-retardant are guaranteed, and the combination property of composite integral body is improved.
5. preparation method of the present invention can simply place horizontal plane with mould, makes the mold bottom level, and liquid phenolic resins foaming combination material can be easy to keep the level height unanimity, and then makes the amount in each checkerwork cell identical.
6. preparation method of the present invention better guarantees the content of phenolic resins in the honeycomb checkerwork cell, thereby guarantees the uniformity of material monolithic density, is the foam in place technology that can well guarantee the adhesive strength between foam and the honeycomb.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the schematic diagram of the composite of the inventive method preparation;
Fig. 2 is the schematic diagram of the raw material honeycomb of the inventive method use;
Fig. 3 is the schematic diagram of the mould that adopts in the inventive method;
Fig. 4 is the schematic diagram of the die cover of the mould that adopts in the inventive method;
Among the figure: 1, mould, 2, die cover, 3, flange, 4, pin hole, 5, steam vent.
The specific embodiment
The present invention is further detailed explanation in conjunction with the accompanying drawings and embodiments now, and these accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only shows the formation relevant with the present invention.
Embodiment 1:
A kind of honeycomb strengthens the preparation method of phenol formaldehyde foam composite, comprises the steps:
(1) phenolic resins foaming combination material is poured in the mould 1, made described phenolic resins foaming combination material in mould 1, keep liquid level height unanimity.As shown in Figure 3-4, described mould 1 is uncovered case shape, has the die cover 2 that cooperates with mould 1 openend.The openend of mould 1 is provided with outside flange 3, and the correspondence position of flange 3 and die cover 2 is provided with pin hole 4, is used for connection, fixed mould 1 and die cover 2.
(2) honeycomb is as shown in Figure 2 vertically put into mould 1, insert in the described phenolic resins foaming combination material, make in each honeycomb checkerwork cell of described honeycomb, the amount of described phenolic resins foaming combination material is identical.
Particularly, described honeycomb is aramid fiber paper wasp nest, and the checkerwork cell of honeycomb is rectangle or regular hexagon, and perhaps described honeycomb is flexible honeycomb.The specification of honeycomb is the 1000*1000*20mm of NH-2.75-35.Preferably, the axis normal of described honeycomb checkerwork cell is in the end face of described honeycomb, and the both ends of the surface of described honeycomb are parallel to each other.
(3) die cover 21 is covered mould 1 openend, and by pin hole 4 that mould 1 and die cover 2 is fixing with buckle.
(4) mould 1 that is equipped with described phenolic resins foaming combination material and honeycomb is put into 50 ℃-100 ℃ in baking oven, and 5h-10h foams, and preferred 60～80 ℃, foaming 6～8h.The honeycomb that makes as shown in Figure 1 strengthens the phenol formaldehyde foam composite.Die cover 2 is provided with steam vent 5, is convenient to phenolic resins timely exhaust of when foaming foaming combination material, is convenient to control the shape of the phenol formaldehyde foam of filling in the shape of honeycomb checkerwork cell in the composite and the checkerwork cell, improves regularity and the quality of composite.
Preferably, the interior shape of described mould 1 matches with the external shape of described honeycomb, makes phenolic resins foaming combination material unlikely outside that is attached to the finished product composite when foaming, makes foaming back gained composite can directly obtain regular shape.
Embodiment 2:
A kind of honeycomb strengthens the preparation method of phenol formaldehyde foam composite, is with the difference of embodiment 1:
In the step (1), mould 1 bottom surface is placed horizontal plane, again phenolic resins foaming combination material is poured in the mould 1, can be easy to make described phenolic resins foaming combination material in mould 1, to keep the level height unanimity.
In the step (2), the specification of described honeycomb is the 2600*1300*20mm of NH-3.67-40.
Embodiment 3:
A kind of honeycomb strengthens the preparation method of phenol formaldehyde foam composite, is with the difference of embodiment 2:
In the step (2), the specification of described honeycomb is the 1000*500*20mm of 4.5-45, and described honeycomb is the glass fibre honeycomb.
Need to prove that among the embodiment 1-3, described phenolic resins foaming combination material adopts industry universal method formulated by the raw material of following weight portion ratio: 100 parts in phenolic resins, emulsifying agent 0.05-1 part, curing agent 0.05-1 part, blowing agent 5-20 part.Phenolic resins, emulsifying agent, curing agent, blowing agent can be selected the general corresponding raw material of the industry respectively for use.Particularly, among the embodiment of the invention 1-3, the inventor select for use phenolic resins, emulsifying agent, curing agent, blowing agent all available from Langfang Yi Ruida heat preservation construction material Co., Ltd, phenolic resins is expandable phenolic resin, the main component of emulsifying agent is the polyoxyethylene sorbitan mono fatty acid ester, curing agent is phosphate aqueous solution, and blowing agent is carrene.
Above foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must determine technical scope according to the claim scope.
Claims (8)
1. the preparation method of a honeycomb enhancing phenol formaldehyde foam composite is characterized in that, comprises the steps:
(1) phenolic resins foaming combination material is poured in the mould, made described phenolic resins foaming combination material in mould, keep liquid level height unanimity;
(2) honeycomb is vertically put into described mould, insert in the described phenolic resins foaming combination material;
(3) step (2) mould that is equipped with described phenolic resins foaming combination material and honeycomb is put into 50 ℃-100 ℃ in baking oven, and 5h-10h foams, and makes described honeycomb enhancing phenol formaldehyde foam composite.
2. a kind of honeycomb according to claim 1 strengthens the preparation method of phenol formaldehyde foam composite, it is characterized in that: in the step (2), in each honeycomb checkerwork cell of described honeycomb, the amount of described phenolic resins foaming combination material is identical.
3. a kind of honeycomb according to claim 1 strengthens the preparation method of phenol formaldehyde foam composite, and it is characterized in that: in the step (1), described mould bottom surface places horizontal plane.
4. a kind of honeycomb according to claim 1 strengthens the preparation method of phenol formaldehyde foam composite, and it is characterized in that: the axis normal of described honeycomb checkerwork cell is in the end face of described honeycomb, and the both ends of the surface of described honeycomb are parallel to each other.
5. a kind of honeycomb according to claim 1 strengthens the preparation method of phenol formaldehyde foam composite, and it is characterized in that: described honeycomb is non-metal honeycomb.
6. a kind of honeycomb according to claim 1 strengthens the preparation method of phenol formaldehyde foam composite, and it is characterized in that: the interior shape of described mould matches with the external shape of described honeycomb.
7. a kind of honeycomb according to claim 1 strengthens the preparation method of phenol formaldehyde foam composite, and it is characterized in that: the checkerwork cell of described honeycomb is rectangle or regular hexagon, and perhaps described honeycomb is flexible honeycomb.
8. a kind of honeycomb according to claim 1 strengthens the preparation method of phenol formaldehyde foam composite, and it is characterized in that: temperature of oven described in the step (3) is 60 ℃-80 ℃, foaming 6h-8h.
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| CN2013100931352A CN103203883A (en) | 2013-03-22 | 2013-03-22 | Method for preparing honeycomb enhanced phenolic foam composite materials |
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| CN2013100931352A CN103203883A (en) | 2013-03-22 | 2013-03-22 | Method for preparing honeycomb enhanced phenolic foam composite materials |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108676195A (en) * | 2018-04-16 | 2018-10-19 | 安徽昊森新材料科技有限公司 | A kind of light sound-proof phenolic resin |
| CN109021489A (en) * | 2017-06-09 | 2018-12-18 | 北京强幕工贸有限责任公司 | Phenol formaldehyde foam aluminum honeycomb product and preparation process |
| CN111674137A (en) * | 2020-06-24 | 2020-09-18 | 深圳市龙睿新材科技有限责任公司 | Full-water-based foamed polyurethane board and preparation method thereof |
| CN113619103A (en) * | 2020-05-08 | 2021-11-09 | 东友科技股份有限公司 | Flame-retardant three-dimensional molded article and method for producing same |
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| CN102198744A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Method for manufacturing phenol-formaldehyde-foam-filled honeycomb core reinforced advanced compound material |
| CN102199308A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Manufacturing method of phenolic-foam-filled honeycomb composite material |
| CN102514249A (en) * | 2011-12-28 | 2012-06-27 | 天津鑫茂鑫风能源科技有限公司 | Manufacturing method for sandwich material with honeycomb composite foam structure for wind power |
-
2013
- 2013-03-22 CN CN2013100931352A patent/CN103203883A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198744A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Method for manufacturing phenol-formaldehyde-foam-filled honeycomb core reinforced advanced compound material |
| CN102199308A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Manufacturing method of phenolic-foam-filled honeycomb composite material |
| CN102514249A (en) * | 2011-12-28 | 2012-06-27 | 天津鑫茂鑫风能源科技有限公司 | Manufacturing method for sandwich material with honeycomb composite foam structure for wind power |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109021489A (en) * | 2017-06-09 | 2018-12-18 | 北京强幕工贸有限责任公司 | Phenol formaldehyde foam aluminum honeycomb product and preparation process |
| CN108676195A (en) * | 2018-04-16 | 2018-10-19 | 安徽昊森新材料科技有限公司 | A kind of light sound-proof phenolic resin |
| CN113619103A (en) * | 2020-05-08 | 2021-11-09 | 东友科技股份有限公司 | Flame-retardant three-dimensional molded article and method for producing same |
| CN111674137A (en) * | 2020-06-24 | 2020-09-18 | 深圳市龙睿新材科技有限责任公司 | Full-water-based foamed polyurethane board and preparation method thereof |
| WO2021258421A1 (en) * | 2020-06-24 | 2021-12-30 | 深圳市龙睿新材料科技有限责任公司 | Full-water-based foamed polyurethane sheet material and preparation method therefor |
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Application publication date: 20130717 |