CN1740216A - Polyurethane foam metallizing treatment process - Google Patents
Polyurethane foam metallizing treatment process Download PDFInfo
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- CN1740216A CN1740216A CN 200510104878 CN200510104878A CN1740216A CN 1740216 A CN1740216 A CN 1740216A CN 200510104878 CN200510104878 CN 200510104878 CN 200510104878 A CN200510104878 A CN 200510104878A CN 1740216 A CN1740216 A CN 1740216A
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Abstract
The polyurethane foam metallizing treatment process includes deoiling polyurethane foam substrate, activation with activating base palladium solution comprising stannous chloride and palladium chloride in molar ratio, reduction, and chemical plating. It features activating base palladium solution comprising stannous chloride and palladium chloride in molar ratio is used in activating polyurethane foam substrate. Compared with traditional process, the present invention has no coarsing and sensitizing steps, less pollution and low cost, and, what is more important is that the present invention has less foam silk breaking, well maintenance of the foam form, greatly strengthened foamed nickel strength and homogeneity. The present invention is ideal plate material for the positive pole and negative pole in high quality Ni-H power battery.
Description
Technical field:
The present invention relates to a kind of polyurethane foam metallizing treatment process, belong to the environmental protection field.
Technical background:
Traditional foamed metal conductionization production technique is: polyurethane foam matrix → oil removing → alligatoring → sensitization → activation → reduction → electroless plating.Roughening process is difficult in the traditional technology grasps, the alligatoring deficiency, and the foam base plate closed pore is not opened, and electroless plating is inhomogeneous, and alligatoring is excessive, single wire fracture, the foam original appearance is destroyed, and the mechanical property of finished foam nickel descends, yield rate.Strong acid strong oxidizer content height in the while coarsening process, environmental pollution is serious.
Purpose of the present invention aims to provide a kind of performance that can improve foamed metal, satisfies the requirement of heavy-duty battery plate material, can reduce the metallizing treatment process of pollution, minimizing operation again.
Summary of the invention:
Polyurethane foam activating process of the present invention is: polyurethane foam matrix → oil removing → activation → reduction → electroless plating.The polyurethane foam activating process adopts the alkali palladium activation solution of tin protochloride and Palladous chloride mol ratio, wherein the mol ratio of tin protochloride and Palladous chloride is 35～45, and the mean pore size of polyurethane foam is below 110PPI, and sodium-chlor is 100g/L, 40～70 ℃ of service temperatures, soak time 3～15min.Palladous chloride concentration is 0.1～0.3g/]
Below the present invention is described in further detail:
Described oil removal treatment is a traditional technology, sodium hydroxide 30～50g/L, 50～70 ℃ of service temperatures, oil removing time 10～50min.
Described activation solution is to be 35～45 at tin protochloride and Palladous chloride mol ratio, sodium-chlor 100g/L, 35～80 ℃ of service temperatures, soak time 5～10min.
It is to carry out in 10% hydrochloric acid soln that described reduction is handled, 30～40 ℃ of service temperatures, operating time 1～8min.
Described chemical nickel plating is at single nickel salt 20～30g/L, inferior sodium phosphate 20～25g/L, Trisodium Citrate 10～20g/L, ammonia chloride 35～50g/L.PH value is 8～10,35～80 ℃ of temperature, chemical nickel plating time 5～15min.
In the polyurethane foam pre-treating technology of the present invention, activation solution configuration most critical.Its configuration step is as follows: with the PdCl of 0.1～0.3g/l
2Be dissolved in the 5ml concentrated hydrochloric acid as 1. liquid; SnCl with 8～24g
2Be dissolved in fully in the mixed solution of 5ml concentrated hydrochloric acid and 10ml distilled water as 2. liquid; Respectively will be 1. liquid and 2. liquid be warming up to 60～70 ℃, under constantly stirring, mix, continue to stir 3. liquid of 20min conduct; The NaCl of 100～180g is dissolved in the 1000ml distilled water fully, is warming up to 50～60 ℃ and mixes with 3. liquid; Continue to stir 20min, and solution is incubated 3～5h in 50～70 ℃.
Described poling processing technique treatment step is as follows:
(1) water bath with thermostatic control is controlled at about 30～50 ℃, the beaker that an amount of activation solution is housed is put into carried out preheating.
(2) the urethane foam matrix after will cleaning is put in the activation solution about 30～50 ℃, floods 5～10 minutes, makes it fully activation evenly, fully.
(3) after the activation, rinse well repeatedly.
(4) subsequently the urethane foam matrix is placed on 30～50 ℃ separate in the glue, dispergation 3～7min, it is clean to take out washing.
(5) matrix behind the dispergation is put into presoak, 20～30 ℃ of preimpregnation of temperature 0.5～1.5 minute are taken out washing and are done
Advantage of the present invention is:
Improve the mechanical property of foamed metal; Intact maintenance foam pattern; Improve raw material availability; Reduce production costs; Reduce environmental pollution.
Description of drawings
Fig. 1 is the nickel foam of this paper prepared
Fig. 2 is the nickel foam of traditional technology preparation
Fig. 3 is the foamed nickel supported-distortion spirogram of tradition and the adopting process preparation of this paper institute.The present invention is relatively proved by accompanying drawing 1 and accompanying drawing 2 unusual effect that keeps the foam original appearance:
As can be seen from the figure Fig. 1 single wire fracture seldom, and Fig. 2 single wire fracture is more. This is because adopt tradition thick Change, sensitization technology is because the pH value of Treatment Solution is low, and contains the strong oxidizing property material (such as, KMnO4、CrO
3Deng), Make polyurethane moment generation oxidation Decomposition, operation is difficult to control. This paper records Salt-Based Colloid Palladium with ten thousand/balance and lives Change the weight-loss ratio of processing foam at 1.5～3.0g/dm3, the percent opening of foam is greater than 98%. This explanation Salt-Based Colloid Palladium also Have obvious alligatoring effect, it is acid that Salt-Based Colloid Palladium solution is, at 60 ℃ of lower polyurethane foam generation hydrolysis, The reaction speed gentleness. Adopt suitable alkali palladium activation can satisfy the requirement of opening closed pore, can avoid again because alligatoring The foam single wire fracture that excessively brings, mechanical performance descend and the low shortcoming of yield rate, have in automated production heavily The effect of wanting.
The present invention is proved by Fig. 3 the remarkable result that improves the foam metal mechanical performance
The nickel foam that the Salt-Based Colloid Palladium activation method that curve 1 and curve 2 adopt for this paper among Fig. 3 prepares, curve 3 Nickel foam for the traditional handicraft preparation. As can be seen from the figure this paper adopts the nickel foam percentage elongation of method preparation with strong Degree all is better than the nickel foam of traditional handicraft preparation.
Embodiment
The polyurethane foam sponge of example 1 size 50mm * 15mm * 2mm, its mean pore size 90PPI, percentage of open area 80%～90%, unit elongation＞150%, density 20～22kg/m
3, porosity is greater than 96%.Successively through oil removing, chemical nickel plating is reduced in activation.
Described activation is containing Palladous chloride 0.1g/l, sodium-chlor 100g/L, and 60 ℃ of service temperatures are carried out under the soak time 7min situation.
Described chemical nickel plating is at sulfur acid nickel 20-30g/L, inferior sodium phosphate 20g/L, Trisodium Citrate 10g/L, ammonia chloride 35g/L.The Ph value is 9.5, and 55 ℃ of temperature are carried out under the situation.
Example 2 technologies are with example 1
Described activation is to contain Palladous chloride 0.15g/l, sodium-chlor 100g/L, and 60 ℃ of service temperatures are carried out under the soak time 7min situation.
Described chemical nickel plating is at sulfur acid nickel 20-30g/L, inferior sodium phosphate 20g/L, Trisodium Citrate 10g/L, ammonia chloride 35g/L.The Ph value is 9.5, and 55 ℃ of temperature are carried out under the chemical nickel plating time 10min situation.
Example 3 technologies are with example 1
Described activation is to contain Palladous chloride 0.2g/l, sodium-chlor 100g/L, and 60 ℃ of service temperatures are carried out under the soak time 7min situation.
Described chemical nickel plating is at sulfur acid nickel 20-30g/L, inferior sodium phosphate 20g/L, Trisodium Citrate 10g/L, ammonia chloride 35g/L.The Ph value is 9.5, and 55 ℃ of temperature are carried out under the chemical nickel plating time 10min situation.
Example 4 technologies are with example 1
Described activation is to contain Palladous chloride 0.25g/l, sodium-chlor 100g/L, and 60 ℃ of service temperatures are carried out under the soak time 7min situation.
Described chemical nickel plating is at sulfur acid nickel 20-30g/L, inferior sodium phosphate 20g/L, Trisodium Citrate 10g/L, ammonia chloride 35g/L.The Ph value is 9.5, and 55 ℃ of temperature are carried out under the chemical nickel plating time 10min situation.
Example 5 technologies are with example 1
Described activation is to contain Palladous chloride 0.3 g/l, sodium-chlor 100g/L, and 60 ℃ of service temperatures are carried out under the soak time 7min situation.
Described chemical nickel plating is at sulfur acid nickel 20-30g/L, inferior sodium phosphate 20g/L, Trisodium Citrate 10g/L, ammonia chloride 35g/L.The Ph value is 9.5, and 55 ℃ of temperature are carried out under the chemical nickel plating time 10min situation.
Example 6 technologies are with example 1
Described activation is to contain Palladous chloride 0.3g/l, sodium-chlor 100g/L, and 60 ℃ of service temperatures are carried out under the soak time 7min situation.
Described chemical nickel plating is at sulfur acid nickel 20-30g/L, inferior sodium phosphate 20g/L, Trisodium Citrate 10g/L, ammonia chloride 35g/L.The Ph value is 9, and 55 ℃ of temperature are carried out under the chemical nickel plating time 10min situation.
Claims (4)
1, a kind of polyurethane foam metallizing treatment process is characterized in that: the polyurethane foam activating process adopts the alkali palladium activation solution of tin protochloride and Palladous chloride mol ratio, and the mol ratio of tin protochloride and Palladous chloride is 35～45 in the tool.
2, according to the described a kind of polyurethane foam metallizing treatment process of claim 1, it is characterized in that: the mean pore size of polyurethane foam is below 110PPI.
3, according to the described a kind of polyurethane foam metallizing treatment process of claim 1, it is characterized in that: sodium-chlor 100g/L, 40～70 ℃ of service temperatures, soak time 3～15min.
4, according to the described a kind of polyurethane foam metallizing treatment process of claim 1, it is characterized in that: Palladous chloride concentration is 0.1～0.3g/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510104878 CN1740216A (en) | 2005-09-27 | 2005-09-27 | Polyurethane foam metallizing treatment process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510104878 CN1740216A (en) | 2005-09-27 | 2005-09-27 | Polyurethane foam metallizing treatment process |
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| CN1740216A true CN1740216A (en) | 2006-03-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386377C (en) * | 2006-06-09 | 2008-05-07 | 清华大学 | Low temperature thermolytic polyacrylonitrile composite tin base cathode material preparation method |
| CN101824619A (en) * | 2010-06-01 | 2010-09-08 | 武汉银泰科技电源股份有限公司 | Preparation method of foam tin material |
| CN106119816A (en) * | 2016-08-19 | 2016-11-16 | 华东理工大学 | A kind of method preparing metallic cobalt/Graphene composite foam material |
| CN107297200A (en) * | 2017-07-31 | 2017-10-27 | 浙江工业大学 | A kind of foam coppe ferrite and its preparation and application using organic polyurethane foam as substrate |
| CN111809196A (en) * | 2020-06-23 | 2020-10-23 | 复旦大学 | Hollow foam autocatalytic electrode and preparation method thereof |
-
2005
- 2005-09-27 CN CN 200510104878 patent/CN1740216A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386377C (en) * | 2006-06-09 | 2008-05-07 | 清华大学 | Low temperature thermolytic polyacrylonitrile composite tin base cathode material preparation method |
| CN101824619A (en) * | 2010-06-01 | 2010-09-08 | 武汉银泰科技电源股份有限公司 | Preparation method of foam tin material |
| CN106119816A (en) * | 2016-08-19 | 2016-11-16 | 华东理工大学 | A kind of method preparing metallic cobalt/Graphene composite foam material |
| CN107297200A (en) * | 2017-07-31 | 2017-10-27 | 浙江工业大学 | A kind of foam coppe ferrite and its preparation and application using organic polyurethane foam as substrate |
| CN107297200B (en) * | 2017-07-31 | 2020-06-23 | 浙江工业大学 | Foamed copper ferrite with organic polyurethane foam as substrate and preparation and application thereof |
| CN111809196A (en) * | 2020-06-23 | 2020-10-23 | 复旦大学 | Hollow foam autocatalytic electrode and preparation method thereof |
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