CN106563629A - Primer for polytrifluorochloroethylene and metallic matrix thermoplastic pressing pretreatment and preparation method of primer - Google Patents
Primer for polytrifluorochloroethylene and metallic matrix thermoplastic pressing pretreatment and preparation method of primer Download PDFInfo
- Publication number
- CN106563629A CN106563629A CN201610997598.5A CN201610997598A CN106563629A CN 106563629 A CN106563629 A CN 106563629A CN 201610997598 A CN201610997598 A CN 201610997598A CN 106563629 A CN106563629 A CN 106563629A
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- CN
- China
- Prior art keywords
- polytrifluorochloroethylene
- metallic matrix
- mass percent
- metalwork
- priming paint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/10—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2451/00—Type of carrier, type of coating (Multilayers)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2506/00—Halogenated polymers
- B05D2506/10—Fluorinated polymers
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention provides a preparation method of primer for polytrifluorochloroethylene and metallic matrix thermoplastic pressing pretreatment. The primer comprises 2.6 to 7.5 percent by mass of chromium trioxide, 30 to 35 percent by mass of distilled water, 3.4 to 9.5 percent by mass of phosphoric acid and 45 to 59 percent by mass of polytrifluorochloroethylene dispersion liquid. A surface treatment method for coating the surface, bonded with polytrifluorochloroethylene, of a metallic matrix with the transitional primer is adopted, so the adhesion strength of the polytrifluorochloroethylene and the metal can be effectively improved; and meanwhile, the polytrifluorochloroethylene achieves the effects of sealing property and medium resistance.
Description
Technical field
The present invention relates to a kind of space product polytrifluorochloroethylene and the base paint formulation of metal fever plastic compression pre-treatment, together
When further relate to a kind of compound method of the priming paint, belong to macromolecule-metal-base composites and field of new, apply in space flight
In valve, door product living.
Background technology
Valve rod class product material is metal in the current carrier rocket liquid hydrogen of China, liquid oxygen fill valve, when fill valve is moved, gold
Abrasion is easily produced between category, causes motion clamping stagnation.The fifth wheels such as the chip that in addition galling is produced enter guiding clearance, also hold
It is easily caused fill valve motion clamping stagnation.
New generation's carrier rocket liquid hydrogen, liquid oxygen fill valve kinematic dexterity are one of keys of valve reliably working, are this
The bonding fluoroplastics bushing on valve rod, compared with the metal-metal matching pair of not then lined, bushing not only can prevent metal
Between viscous abrasion, and bushing has resistivity to fifth wheel, even if fifth wheel enters valve lever clearance, also can be mitigated or eliminated many
The impact that excess is moved to guide post, so as to improve the kinematic dexterity of fill valve.
Valve rod class product is the key components and partss of fill valve, and design is coated valve rod from polytrifluorochloroethylene, to valve rod
Play a protective role, to improve the reliability of valve.Traditional technique is, using the method for cold bonding, a strata to be coated on valve rod
CTFE.Polytrifluorochloroethylene fluoroplastics are because the characteristics of its molecular composition, surface is in chemical inertness, belongs to typical difficulty
The material of bonding, if without special surface treatment, it is difficult to be bondd with general adhesive.Even if having carried out bonding, it can
It is also not high by property, the problems such as easily there is unsticking in the use in later stage.
The content of the invention
The present invention provides a kind of priming paint compound method that pre-treatment is suppressed for polytrifluorochloroethylene and metallic matrix thermoplastic,
Its adopt transition priming paint to the metal base surface polytrifluorochloroethylene that obtains of process and metallic matrix adhesive strength up to 14Mpa with
On.
Realize the technical scheme of the object of the invention：A kind of polytrifluorochloroethylene suppresses the bottom of pre-treatment with metallic matrix thermoplastic
Paint, it includes：Chromic acid, mass percent is 2.6～7.5%；Distilled water, mass percent is 30～35%；Phosphoric acid, matter
Amount percentage ratio is 3.4～9.5%；Polytrifluorochloroethylene dispersion liquid, mass percent is 45～59%.
A kind of polytrifluorochloroethylene as above suppresses the priming paint of pre-treatment, its gold being applied to metallic matrix thermoplastic
Category matrix includes aluminum, steel or GH4169 high temperature alloys.
A kind of polytrifluorochloroethylene of the present invention suppresses pretreatment primer compound method with metallic matrix thermoplastic, its bag
Containing following steps：
(1) chromic acid, distilled water, phosphoric acid are weighed；Chromic anhydride is dissolved in distilled water and adds phosphoric acid, after being sufficiently stirred for
It is made into mix acid liquor；Then polytrifluorochloroethylene dispersion liquid is weighed again；Wherein, chromic acid, mass percent be 2.6～
7.5%；Distilled water, mass percent is 30～35%；Phosphoric acid, mass percent is 3.4～9.5%；Polytrifluorochloroethylene point
Dispersion liquid, mass percent is 45～59%；
(2) first the mix acid liquor obtained by step (1) is equably applied to by metalwork surface, acid to be mixed using coating method
After liquid dries, then by mix acid liquor repetitive coatings 1～3 time；
(3) after the mix acid liquor of step (2) metalwork surface-coated dries, polytrifluorochloroethylene homogeneous dispersion is applied
Metalwork surface is overlying on, after polytrifluorochloroethylene dispersion liquid dries, then by polytrifluorochloroethylene dispersion liquid repetitive coatings 1～3
It is secondary；
(4) and then by the metalwork after drying it is put into 50～60 DEG C of 15～60min of drying in oven；Metal after drying
Part is stored in standby in the baking oven of cleaning or exsiccator.
A kind of polytrifluorochloroethylene as above suppresses pretreatment primer compound method with metallic matrix thermoplastic, described in it
The metallic matrix that is applied to of priming paint include aluminum, steel or GH4169 high temperature alloys.
Effect of the invention is that：
The present invention is for valve rod, the construction featuress for being combined the products such as push rod, flap and polytrifluorochloroethylene in fill valve
Physical and chemical performance, by the method for thermoplastic shaping, realizes the reliable bonding of polytrifluorochloroethylene and metallic matrix.Using in gold
The surface treatment method of category matrix adhesive aggregation CTFE face coating transition priming paint then can effectively increase polytrifluorochloroethylene
With Bond Strength.The effect of priming paint is the adhesive force for improving metal base surface, closes metal base surface micropore, profit
With mechanical interlocking and the mechanism of physical absorption, make polytrifluorochloroethylene that the special geometric of matrix surface is fully infiltrated in molten condition
Structure, depends on the surface area of height extension, forms the effect closed equivalent to anchor.
Adopt the acid transition priming paint with polytrifluorochloroethylene as main component, compared with priming paint is not adopted, poly- trifluoro chlorine
The average pull-off strength of ethylene and metallic matrix is higher than 20MPa, this explanation transition priming paint substantially increase polytrifluorochloroethylene with
The pull-off strength of metallic matrix.The products such as valve rod, compound push rod, flap of this transition primer applications in fill valve are in liquid nitrogen ring
Under border, there are not the phenomenons such as unsticking and crackle in polytrifluorochloroethylene bushing, demonstrate polytrifluorochloroethylene in fill valve valve rod,
Bonding reliability on the products such as compound push rod, flap, disclosure satisfy that the motion guide effect under fill valve special operation condition, solve
The motion clamping stagnation problem that fill valve is likely to occur.After in rocket mechanism, existed using the abrasion resistance properties of polytrifluorochloroethylene
Metallic matrix is protected in fill valve motor process well, while polytrifluorochloroethylene serves sealing property and media-resistant is made
With.
Specific embodiment
Before suppressing a kind of polytrifluorochloroethylene of the present invention and metallic matrix thermoplastic with reference to specific embodiment
Process priming paint compound method to be further described.
Embodiment 1：
(1) 1g chromic acids (chromic anhydride), 5g distilled water, 1.3g phosphoric acid are weighed.
(2) chromic anhydride is dissolved in distilled water, adds phosphoric acid, mix acid liquor is made into after being sufficiently stirred for.
(3) weigh 7.3g polytrifluorochloroethylene dispersion liquids to be placed in another beaker.
(4) a small amount of mix acid liquor is dipped with clean brush pen, metalwork blast face is applied to uniform and thinly, treat the coated 1st
After drying all over the metalwork of acid solution, then carry out the 2nd coating.
(5) after the metalwork of coated 2 times mix acid liquors dries, by polytrifluorochloroethylene dispersion liquid it is uniform and thin be applied to
Metalwork blast face, coating pass is 2 times.
(6) it is painted with after the metalwork of polytrifluorochloroethylene priming paint dries, is put into 50～60 DEG C of drying in oven half an hour.
Priming paint, the average pull-off strength of polytrifluorochloroethylene-metal of final thermoplastic compacting are obtained by this kind of method
28.6MPa。
Embodiment 2：
(1) 1g chromic acids (chromic anhydride), 5.5g distilled water, 1.3g phosphoric acid are weighed.
(2) chromic anhydride is dissolved in distilled water, adds phosphoric acid, mix acid liquor is made into after being sufficiently stirred for.
(3) weigh 7.8g polytrifluorochloroethylene dispersion liquids to be placed in another beaker.
(4) a small amount of mix acid liquor is dipped with clean brush pen, metalwork blast face is applied to uniform and thinly, treat the coated 1st
After drying all over the metalwork of acid solution, then carry out the 2nd coating.
(5) after the metalwork of coated 2 times mix acid liquors dries, by polytrifluorochloroethylene dispersion liquid it is uniform and thin be applied to
Metalwork blast face, coating pass is 2 times.
(6) it is painted with after the metalwork of polytrifluorochloroethylene priming paint dries, is put into 55 DEG C of drying in oven half an hour.
Priming paint, the average pull-off strength of polytrifluorochloroethylene-metal of final thermoplastic compacting are obtained by this kind of method
23MPa。
Embodiment 3：
(1) 0.8g chromic acids (chromic anhydride), 4.5g distilled water, 1.0g phosphoric acid are weighed.
(2) chromic anhydride is dissolved in distilled water, adds phosphoric acid, mix acid liquor is made into after being sufficiently stirred for.
(3) weigh 6.9g polytrifluorochloroethylene dispersion liquids to be placed in another beaker.
(4) a small amount of mix acid liquor is dipped with clean brush pen, metalwork blast face is applied to uniform and thinly, treat the coated 1st
After drying all over the metalwork of acid solution, then carry out the 2nd coating.
(5) after the metalwork of coated 2 times mix acid liquors dries, by polytrifluorochloroethylene dispersion liquid it is uniform and thin be applied to
Metalwork blast face, coating pass is 2 times.
(6) it is painted with after the metalwork of polytrifluorochloroethylene priming paint dries, is put into 60 DEG C of drying in oven 15min.
Priming paint, the average pull-off strength of polytrifluorochloroethylene-metal of final hot pressing compacting are obtained by this kind of method
22MPa。
Embodiment 4：
(1) 1g chromic acids (chromic anhydride), 13.5g distilled water, 1.3g phosphoric acid are weighed.
(2) chromic anhydride is dissolved in distilled water, adds phosphoric acid, mix acid liquor is made into after being sufficiently stirred for.
(3) weigh 22.8g polytrifluorochloroethylene dispersion liquids to be placed in another beaker.
(4) a small amount of mix acid liquor is dipped with clean brush pen, metalwork blast face is applied to uniform and thinly, treat the coated 1st
After drying all over the metalwork of acid solution, then carry out the 3rd coating.
(5) after the metalwork of coated 3 times mix acid liquors dries, by polytrifluorochloroethylene dispersion liquid it is uniform and thin be applied to
Metalwork blast face, coating pass is 3 times.
(6) it is painted with after the metalwork of polytrifluorochloroethylene priming paint dries, is put into 50 DEG C of drying in oven 1 hour.
Priming paint, the average pull-off strength of polytrifluorochloroethylene-metal product of final thermoplastic compacting are obtained by this kind of method
26.9MPa。
Metalwork can be aluminum, steel or GH4169 high temperature alloys in above-described embodiment 1～4.
Claims (4)
1. a kind of polytrifluorochloroethylene and metallic matrix thermoplastic suppress the priming paint of pre-treatment, it is characterised in that：The priming paint includes：
Chromic acid, mass percent is 2.6～7.5%；
Distilled water, mass percent is 30～35%；
Phosphoric acid, mass percent is 3.4～9.5%；
Polytrifluorochloroethylene dispersion liquid, mass percent is 45～59%.
2. a kind of polytrifluorochloroethylene according to claim 1 and metallic matrix thermoplastic suppress the priming paint of pre-treatment, and it is special
Levy and be：The metallic matrix that described priming paint is applied to includes aluminum, steel or GH4169 high temperature alloys.
3. a kind of polytrifluorochloroethylene suppresses pretreatment primer compound method with metallic matrix thermoplastic, it is characterised in that：The method
Comprise the steps of：
(1) chromic acid, distilled water, phosphoric acid are weighed；Chromic anhydride is dissolved in distilled water and adds phosphoric acid, be made into after being sufficiently stirred for
Mix acid liquor；
Then polytrifluorochloroethylene dispersion liquid is weighed again；
Wherein, chromic acid, mass percent is 2.6～7.5%；Distilled water, mass percent is 30～35%；Phosphoric acid, matter
Amount percentage ratio is 3.4～9.5%；Polytrifluorochloroethylene dispersion liquid, mass percent is 45～59%；
(2) first the mix acid liquor obtained by step (1) is equably applied to by metalwork surface using coating method, acid solution to be mixed is dried in the air
After dry, then by mix acid liquor repetitive coatings 1～3 time；
(3) after the mix acid liquor of step (2) metalwork surface-coated dries, polytrifluorochloroethylene homogeneous dispersion is coated on
Metalwork surface, after polytrifluorochloroethylene dispersion liquid dries, then by polytrifluorochloroethylene dispersion liquid repetitive coatings 1～3 time；
(4) and then by the metalwork after drying it is put into 50～60 DEG C of 15～60min of drying in oven；Metalwork after drying is protected
Exist standby in the baking oven or exsiccator of cleaning.
4. a kind of polytrifluorochloroethylene according to claim 3 suppresses pretreatment primer preparation side with metallic matrix thermoplastic
Method, it is characterised in that：The metallic matrix that described priming paint is applied to includes aluminum, steel or GH4169 high temperature alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997598.5A CN106563629B (en) | 2016-11-14 | 2016-11-14 | Pre-treatment primer for thermoplastic pressing of polychlorotrifluoroethylene and metal substrate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997598.5A CN106563629B (en) | 2016-11-14 | 2016-11-14 | Pre-treatment primer for thermoplastic pressing of polychlorotrifluoroethylene and metal substrate and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106563629A true CN106563629A (en) | 2017-04-19 |
| CN106563629B CN106563629B (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610997598.5A Active CN106563629B (en) | 2016-11-14 | 2016-11-14 | Pre-treatment primer for thermoplastic pressing of polychlorotrifluoroethylene and metal substrate and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109206990A (en) * | 2018-10-30 | 2019-01-15 | 首都航天机械有限公司 | A kind of priming paint and the preparation method and application thereof |
| CN111570229A (en) * | 2020-05-26 | 2020-08-25 | 梦天家居集团股份有限公司 | Roller coating process for UV roller color primer and water-based white finish |
-
2016
- 2016-11-14 CN CN201610997598.5A patent/CN106563629B/en active Active
Non-Patent Citations (5)
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| 段予忠等: "《常用塑料原料与加工助剂》", 30 November 1991, 科学技术文献出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109206990A (en) * | 2018-10-30 | 2019-01-15 | 首都航天机械有限公司 | A kind of priming paint and the preparation method and application thereof |
| CN111570229A (en) * | 2020-05-26 | 2020-08-25 | 梦天家居集团股份有限公司 | Roller coating process for UV roller color primer and water-based white finish |
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| Publication number | Publication date |
|---|---|
| CN106563629B (en) | 2020-11-20 |
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