CN106220979A - Water miscible thermal expansion molding core and preparation method thereof and using method - Google Patents
Water miscible thermal expansion molding core and preparation method thereof and using method Download PDFInfo
- Publication number
- CN106220979A CN106220979A CN201610599459.7A CN201610599459A CN106220979A CN 106220979 A CN106220979 A CN 106220979A CN 201610599459 A CN201610599459 A CN 201610599459A CN 106220979 A CN106220979 A CN 106220979A
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- CN
- China
- Prior art keywords
- thermal expansion
- molding core
- water miscible
- expansion molding
- core
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3807—Resin-bonded materials, e.g. inorganic particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a kind of water miscible thermal expansion molding core and preparation method thereof and using method, calculate according to the mass fraction, including aqueous adhesive 5～10 parts, expandable microspheres 10～50 parts, metal powder conductive powder 20～30 parts and inorganic filler 40～50 parts are for preparing raw material.The present invention devises a kind of water miscible thermal expansion molding core, and this molding core expands under heating condition, again can dissolution in the way of water-soluble after machining, there is good forming effect, the advantages such as technique is simple, with low cost, are particularly suitable for the hollow the part with complicated structure made with prepreg.Material source of the present invention is extensive, and the feature of environmental protection is good, and using effect is preferable.
Description
Technical field
The present invention relates to technical field of polymer materials, a kind of water miscible thermal expansion molding core and preparation side thereof
Method and using method.
Background technology
Advanced Resin-based Composites is with high-molecular organic material as matrix, and high-performance continuous fiber is reinforcing material,
It is prepared from by combination process, and has the class new material being substantially better than stock blend performance.For labyrinth goods
Overall co-curing and Multicarity, enclosed construction molding frequently with thermal expansion moulding process, thermal expansion molding is after i.e. mould is heated, due to
Core material thermal expansion coefficient is bigger than external mold, and volumetric expansion is restricted, and produces pressure, i.e. flatulence of heat type pressure, with this in die cavity
Realize the pressurization to composite solidification process.For taking out the product of core material, silicone rubber is difficult to as core material
Realize.Patent inventor describes one in patent CN201510074327.8 and reacts as thermal source using calcium oxide and water, micro-
Ball foaming agent expanded by heating provides the method that pressure makes composite hollow fiber goods, but for using prepreg system
Make prepreg length hardening time during hollow product, temperature height, therefore use spontaneous heating bulbs of pressure bag to have certain limitation.
Summary of the invention
It is an object of the invention to: a kind of water miscible thermal expansion molding core and preparation method thereof and using method are provided, it
Good forming effect, technique is simple, with low cost, is suitable for prepreg to make hollow the part with complicated structure, to overcome existing skill
The deficiency of art.
The present invention is achieved in that water miscible thermal expansion molding core, calculates according to the mass fraction, including aqueous adhesive
5～10 parts, expandable microspheres 10～50 parts, metal powder conductive powder 20～30 parts and inorganic filler 40～50 parts are for preparing raw material.
Described aqueous adhesive is polyvinyl acetate, aqueous ethylene-vinyl acetate copolymer, polyvinyl alcohol resin or water-soluble
Property silicone rubber, the solids content of aqueous adhesive is 50-60%.
Described metal powder conductive powder is the aluminium powder of 100-320 mesh, iron powder or copper powder.
Described expandable microspheres is microcapsule-type microspheres.
The preparation method of water miscible thermal expansion molding core, takes each component by above-mentioned mass fraction, by aqueous adhesive, swollen
Swollen microsphere, metal powder conductive powder and inorganic filler mixing, and after stirring, by material at silicone rubber or other soft moulds
Molding in tool, it is thus achieved that core just base, dries core just base 30～60 minutes at 40～50 DEG C, it is thus achieved that water miscible thermal expansion becomes
Core die.
The using method of water miscible thermal expansion molding core, uses water miscible thermal expansion molding core in composite heat
In expansion process, water miscible thermal expansion molding core is placed on position to be formed, at the bar that processing temperature is 100～300 DEG C
Under part, heat 1～3 hour, after material product completion of cure to be composite, by molding core dissolution in the way of water-soluble.
Owing to have employed technique scheme, compared with prior art, the present invention devises a kind of water miscible thermal expansion
Core die, this molding core expands under heating condition, after machining again can dissolution in the way of water-soluble, have into
The advantages such as type is effective, and technique is simple, with low cost, are particularly suitable for the hollow the part with complicated structure made with prepreg.This
Bright material source is extensive, and the feature of environmental protection is good, and using effect is preferable.
Detailed description of the invention
By the following examples the present invention is further described specifically.In following embodiment, each component
Consumption is weight consumption.Be necessary it is pointed out here that be that following example are served only for that the present invention is described further, no
It is understood that for limiting the scope of the invention, this art skilled person do the present invention according to the invention described above content
Go out some nonessential improvement and adjustment, still fall within protection scope of the present invention.
Embodiments of the invention 1: the preparation of water miscible thermal expansion molding core, calculate according to the mass fraction, aqueous gluing
Agent 10 parts, expandable microspheres 50 parts, metal powder conductive powder 20 parts and inorganic filler 40 parts；Described aqueous adhesive be aqueous ethylene-
Acetate ethylene copolymer, the solids content of aqueous adhesive is 55%；The described copper powder that metal powder conductive powder is 200 mesh, institute
The expandable microspheres stated is microcapsule-type microspheres F-48D.
The using method of water miscible thermal expansion molding core, product to be formed is a hollow profile stick, T700 carbon
Fiber prepreg material；(1) making of water solublity thermal expansion core: use the core film molding mold that silastic material is made, by aqueous
Adhesive, expandable microspheres, metal powder conductive powder and inorganic filler mixing, and after stirring in film filling mixture
Material, makes mixed material molding in film obtain core just base, is dried 60 minutes by core just base, it is thus achieved that water miscible at 40 DEG C
Thermal expansion molding core；(2) on water solublity thermal expansion core, the thick silicone rubber of 1mm is brushed, it is thus achieved that the inner tube of a tyre；(3) prepreg presses one
After fixed size dimension cuts, then fibrous material is laid on the inner tube of a tyre by certain laying direction, prepreg has been laid
After finishing, closed die will heat 2 hours in overall for the mould baking oven putting into 120 DEG C in the lump；(4) after resin solidifies, product is taken out,
And product is soaked 10 minutes in water, the foaming material that after core material chance water, product inner core is remained by deliquescing again with giant
Material is gone out, and i.e. can get required product.
Embodiments of the invention 2: the preparation of water miscible thermal expansion molding core, calculate according to the mass fraction, aqueous gluing
Agent 10 parts, expandable microspheres 50 parts, metal powder conductive powder 20 parts and inorganic filler 40 parts；Described aqueous adhesive is polyvinyl alcohol,
The solids content of aqueous adhesive is 60%；The described iron powder that metal powder conductive powder is 150 mesh, described expandable microspheres is micro-
Capsule-type microspheres F36D.
The using method of water miscible thermal expansion molding core, product to be formed is a hollow sphere, and material uses T700
Carbon fiber prepreg；(1) making of water solublity thermal expansion core: use the core film molding mold that polyurethane material is made, by water
Property adhesive, expandable microspheres, metal powder conductive powder and inorganic filler mixing, and after stirring in film filling mixture
Material, makes mixed material molding in film obtain core just base, is dried 60 minutes by core just base, it is thus achieved that water miscible at 50 DEG C
Thermal expansion molding core；(2) on water solublity thermal expansion core, the thick silicone rubber of 1mm is brushed, it is thus achieved that the inner tube of a tyre；(3) prepreg presses one
After fixed size dimension cuts, then fibrous material is laid on the inner tube of a tyre by certain laying direction；Prepreg has been laid
After finishing, closed die takes out product by heating 2 hours in overall for the mould baking oven putting into 120 DEG C in the lump after resin solidifies；(4)
Taking out product after resin solidifies, and soaked in water 10 minutes by product, after water met by core material, giant is used in deliquescing again
The expanded material that product inner core remains is gone out, i.e. can get required product.
Comparative example:
Preparing identical product with embodiment 1, its core uses thermal expansion silica gel.
Product and process that comparative example 1 prepares with embodiment 1 compare as shown in table 1.
Table 1
Visible, the present invention is faster more than 4 times than prior art on the integral production time, and it is mainly the big of knockout course
Width simplifies, and the demoulding time can be made greatly to shorten, and the total quality of product is good.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-described embodiment
Limit, the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine, simplify,
All should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (6)
1. a water miscible thermal expansion molding core, it is characterised in that: calculate according to the mass fraction, including aqueous adhesive 5～10
Part, expandable microspheres 10～50 parts, metal powder conductive powder 20～30 parts and inorganic filler 40～50 parts are for preparing raw material.
Water miscible thermal expansion molding core the most according to claim 1, it is characterised in that: described aqueous adhesive is poly-vinegar
Acid ethylene, aqueous ethylene-vinyl acetate copolymer, polyvinyl alcohol resin or water-soluble silicon rubber, the solid of aqueous adhesive contains
Amount is 50-60%.
Water miscible thermal expansion molding core the most according to claim 1, it is characterised in that: described metal powder conductive powder is
The aluminium powder of 100-320 mesh, iron powder or copper powder.
Water miscible thermal expansion molding core the most according to claim 1, it is characterised in that: described expandable microspheres is micro-glue
Bladder type microspheres.
5. the preparation method of a water miscible thermal expansion molding core as claimed in claim 1, it is characterised in that: by above-mentioned matter
Amount number takes each component, aqueous adhesive, expandable microspheres, metal powder conductive powder and inorganic filler is mixed, and is sufficiently stirred for all
After even, by material at in-mold molding, it is thus achieved that core just base, core just base is dried 30～60 minutes at 40～50 DEG C, obtains
Obtain water miscible thermal expansion molding core.
6. the using method of a water miscible thermal expansion molding core as claimed in claim 1, it is characterised in that: by water solublity
Thermal expansion molding core use in Composite Thermal Expansion technique, water miscible thermal expansion molding core is placed on position to be formed
Put, under conditions of processing temperature is 100～300 DEG C, heat 1～3 hours, after material product completion of cure to be composite,
By molding core dissolution in the way of water-soluble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610599459.7A CN106220979A (en) | 2016-07-27 | 2016-07-27 | Water miscible thermal expansion molding core and preparation method thereof and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610599459.7A CN106220979A (en) | 2016-07-27 | 2016-07-27 | Water miscible thermal expansion molding core and preparation method thereof and using method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106220979A true CN106220979A (en) | 2016-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610599459.7A Pending CN106220979A (en) | 2016-07-27 | 2016-07-27 | Water miscible thermal expansion molding core and preparation method thereof and using method |
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| CN (1) | CN106220979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978361A (en) * | 2019-12-09 | 2020-04-10 | 东莞木羊复合材料有限公司 | Die pressing forming process based on high-pressure double-sided soft die application |
-
2016
- 2016-07-27 CN CN201610599459.7A patent/CN106220979A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978361A (en) * | 2019-12-09 | 2020-04-10 | 东莞木羊复合材料有限公司 | Die pressing forming process based on high-pressure double-sided soft die application |
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