CN102817017A - Preparation method for surface modification of bakelite groove drum - Google Patents
Preparation method for surface modification of bakelite groove drum Download PDFInfo
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- CN102817017A CN102817017A CN2012103187538A CN201210318753A CN102817017A CN 102817017 A CN102817017 A CN 102817017A CN 2012103187538 A CN2012103187538 A CN 2012103187538A CN 201210318753 A CN201210318753 A CN 201210318753A CN 102817017 A CN102817017 A CN 102817017A
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Abstract
The invention discloses a preparation method for surface modification of a bakelite groove drum, belonging to the field of surface engineering. The preparation method comprises the following steps: 1. pretreatment of a groove drum surface; 2. sensitizing activation of the groove drum surface; and 3. chemical plating of the groove drum surface. The preparation method disclosed by the invention is simple and convenient to operate; and the preparation method can obviously enhance the wear resistance of the bakelite groove drum, effectively save the cost and enhance the effective utilization rate of resources and energies.
Description
Technical field
The invention belongs to the Surface Engineering field, particularly a kind of preparation method who is used for phenoplast groove drum surface-treated.
Background technology
Groove drum is one of important winding unit on the slot-cylinder type cheese winder, is important core technology part.The groove drum shape is a cylinder grooved cam normally, on its periphery, is carved with the reciprocal spiral grooves of a sealing vertically.On its periphery, be carved with the reciprocal spiral grooves of a sealing vertically.Groove drum groundwork position is the spiral slot of groove drum circumferential surface; Mainly utilize the circumferential motion of spiral groove realization yarn in the groove letter and to-and-fro movement in axial direction during doff, make yarn be wound on the surface of bobbin equably and form bobbin with the shape of spiral-line.Because groove drum outside surface and flute surfaces and the secular high-speed friction of yarn, cause groove drum very easily to wear and tear and then scrap.Therefore, it becomes one of crucial wearing detail in the textile manufacturing machine gradually, both at home and abroad this is all taken much count of.
At present, domestic widespread production and use mainly be the phenoplast groove drums, but in view of performance, exist deficiency: at first; Run up down; Phenoplast groove drum and yarn tube surface are prone to triboelectrification, cause insulation resistance very high (1013～1016 Ω), and the static of generation can't leak; Cause the surface of plastics groove drum to form stronger electrostatic field, and the generation of electrostatic field brings very adverse influence can for guide and doubling; Next, the hardness of phenoplast groove drum is low, and (30～40HBS), wear resistance is relatively poor, and under the successive DRY SLIDING, national every year cause nearly 3,000 ten thousand yuan financial loss for being merely about 3 months the work-ing life of plastics groove drum.But groove drum such as duraluminum that cost higher, stainless steel good with wear resistance compared; The phenoplast groove drum is because of low-cost and good still widespread use on cheese winder of workability; But because of its low wear resistance and the non-conductive very big yarn qualities that influences; Textile industry hopes that conduction is arranged, wear-resisting inexpensive novel phenoplast groove drum, to adapt to the needs of network man-made fibre yarn.
Because the main abrading section of groove drum is outside surface and trench portions, therefore can only carry out modification to the surface of phenoplast, can practice thrift cost effectively, improve resource, effective utilization rate of energy.Electroless plating technology (Eletroless Plating) is because to have technology simple, and it is superior to obtain coating performance, and is applicable to the characteristics such as workpiece surface of any complicated shape and has obtained increasing attention, and can directly be plated on the various matrixes.The narrowest part of groove drum groove has only 3.5mm, and the deepest part can reach 21.5mm, adopts electroless plating to carry out surface-treated for special-shaped component like this and has incomparable advantage.
Summary of the invention
To the relatively poor present situation of existing phenoplast groove drum wear resistance, the technical problem that quasi-solution of the present invention is determined is to design a kind of preparation method who is used for phenoplast groove drum surface-treated.This method can effectively improve the wear resistance of groove drum, and simple to operation.
A kind of preparation method who is used for phenoplast groove drum surface-treated provided by the invention comprises the steps:
(1) phenoplast groove drum surface preparation;
1. with cleaning behind the phenoplast groove drum sanding and polishing, dry 8h～10h under 100～120 ℃ of temperature then.
2. cleaned groove drum is immersed in the mixing solutions of being made up of sodium hydroxide solution and sodium carbonate solution in inciting somebody to action 1., and temperature is controlled at 50～60 ℃, uses washed with de-ionized water subsequently, is immersed in then in the phosphoric acid solution, uses washed with de-ionized water after the completion.
3. groove drum is immersed in the mixed solution of ydrogen peroxide 50 and sulfuric acid composition and floods 0～10min in will be 2., uses washed with de-ionized water after the taking-up.
(2) phenoplast groove drum surface sensitizing activation;
1. the groove drum after 3. step is handled in (1) is immersed in the sensitizing solution of being made up of tin protochloride and hydrochloric acid, dipping 5～10min uses washed with de-ionized water then.
2. cleaned sensitization sample is immersed in the activation solution by Palladous chloride and hydrochloric acid in inciting somebody to action 1., and normal temperature is dipping 2～5min down, uses washed with de-ionized water then.
(3) phenoplast groove drum surface chemical plating;
The 2. cleaned groove drum of step in (2) is put in the mixed liquor A of being made up of single nickel salt, lactic acid, propionic acid; Then A liquid is put in the water-bath and heated; Will be by inferior sodium phosphate, anhydrous sodium acetate, the mitigation B liquid that thiocarbamide is formed is poured in the A liquid; Under certain temperature and pH value condition, carry out 45～60min electroless plating, can obtain to improve the nickel-phosphor alloy chemical plating of phenoplast groove drum wear resistance.
The said sodium hydroxide solution that preprocessing process is used and the concentration of sodium carbonate solution are respectively 0.5～1.5mol/L and 0.5～1.5mol/L.
Said phosphoric acid and deionized water volume ratio are 1: 3～1: 5.
In the mixed solution that said ydrogen peroxide 50 and sulfuric acid are formed, the volume ratio of the two is 1: 3.5～1: 5.5.
The concentration of tin protochloride described in the sensitizing solution and hydrochloric acid is respectively 8～12g/L and 35～45ml/L.
The concentration of Palladous chloride described in the activation solution and hydrochloric acid is respectively 0.1～0.4g/L, 55～65ml/L.
Described in the electroless plating process in the mixed liquor A concentration of single nickel salt, lactic acid and propionic acid be respectively 28～40g/L, 6～10g/L and 6～10g/L.
The concentration of inferior sodium phosphate, anhydrous sodium acetate and thiocarbamide is respectively 22～34g/L, 10～20g/L and 0.5～1mg/L in the said mixed liquid B.
Said chemical plating fluid temperature is 80～95 ℃.
Said chemical plating fluid pH is controlled at 4.4～5.4.
Beneficial effect of the present invention is:
(1) adopts sulfuric acid-ydrogen peroxide 50 acid etching phenoplast, improved the wetting ability of phenoplast base materials, it can fully be contacted with sensitizing and activating liquid, further improved the utilization ratio of chemical plating fluid, condition is provided for obtaining uniform coating.
(2) chemical Ni-plating layer can effectively improve phenoplast groove drum surface property in the successful coating on phenoplast groove drum surface, for the improved performance of phenoplast matrix workpiece provides new thinking.
(3) range of application of phenoplast matrix workpiece can be effectively expanded in the improvement of phenoplast groove drum surface abrasion resistance property, prolongs the work-ing life of phenoplast matrix workpiece.
(4) this method has improved the effective rate of utilization of resource, the energy, has also avoided the environmental pollution that causes in the phenoplast duplication of production process.
Description of drawings
Fig. 1 is sem (SEM) picture on the phenoplast groove drum surface after the modification of embodiment 1 preparation;
Fig. 2 is sem (SEM) picture behind the phenoplast groove drum surface abrasion after the modification of embodiment 1 preparation.
Embodiment
Adopting chemical plating method, is sample with the phenoplast groove drum, through surperficial alkali cleaning and acid etching, and sensitizing and activating, technologies such as electroless plating are invented out a kind of preparation method who is used for phenoplast groove drum surface-treated.
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Embodiment 1
A kind of preparation method who is used for phenoplast groove drum surface-treated, this method steps is following:
(1) phenoplast groove drum surface preparation;
1. with cleaning behind the phenoplast groove drum sanding and polishing, dry 10h under 100 ℃ of temperature then.
2. in will be 1. cleaned groove drum to be immersed in concentration be the 1mol/L sodium hydroxide solution with the mixing solutions of concentration for 1mol/L yellow soda ash composition in; 60 ℃ of temperature; Use washed with de-ionized water subsequently; Be immersed in then in the phosphoric acid solution (volume ratio of phosphoric acid and deionized water is 1: 4), use washed with de-ionized water after the completion.
3. to be immersed in ydrogen peroxide 50 and sulfuric acid volume ratio be to flood 7min in 1: 4 the mixed solution to groove drum in will be 2., uses washed with de-ionized water after the taking-up.
(2) phenoplast groove drum surface sensitizing activation;
1. the groove drum after step in (1) 3. being handled is immersed in by concentration and is respectively in the sensitizing solution that 8g/L tin protochloride and 40ml/L hydrochloric acid forms, and normal temperature time floods 5min, uses washed with de-ionized water then.
2. cleaned sensitization groove drum is immersed in concentration and is respectively in the activation solution of 0.2g/L Palladous chloride and 60ml/L hydrochloric acid in will be 1., and normal temperature is dipping 3min down, with the sample after the washed with de-ionized water activation.
(3) phenoplast groove drum surface chemical plating;
2. cleaned groove drum of step in (2) is put into concentration to be respectively in the mixed liquor A that 36g/L single nickel salt, 10g/L lactic acid and 8g/L propionic acid form; Then A liquid is put in 90 ℃ of water-baths and heated; The mitigation B liquid that concentration is respectively 30g/L inferior sodium phosphate, 15g/L anhydrous sodium acetate and 0.5mg/L thiocarbamide composition is poured in the A liquid; The plating bath pH regulator is 5.4, carries out the 60min electroless plating.Through test, phosphorus content is 7.76% in the nickel-phosphor alloy coating on phenoplast groove drum surface.Compare with the phenoplast matrix, the hardness on surface has improved 5.5 times after the modification, and wear rate is by 9 * 10
-5G/s is reduced to 1.28 * 10
-6G/s.
Embodiment 2
A kind of preparation method who is used for phenoplast groove drum surface-treated, this method steps is following:
(1) phenoplast groove drum surface preparation;
1. with cleaning behind the phenoplast groove drum sanding and polishing, dry 12h under 80 ℃ of temperature then.
2. in will be 1. cleaned groove drum to be immersed in concentration be the 1mol/L sodium hydroxide solution with the mixing solutions of concentration for 1.5mol/L yellow soda ash composition in; 60 ℃ of temperature; Use washed with de-ionized water subsequently; Be immersed in then in the phosphoric acid solution (volume ratio of phosphoric acid and deionized water is 1: 5), use washed with de-ionized water after the completion.
3. to be immersed in ydrogen peroxide 50 and sulfuric acid volume ratio be to flood 5min in 1: 5 the mixed solution to groove drum in will be 2., uses washed with de-ionized water after the taking-up.
(2) phenoplast groove drum surface sensitizing activation;
1. the groove drum after step in (1) 3. being handled is immersed in by concentration and is respectively in the sensitizing solution that 10g/L tin protochloride and 42ml/L hydrochloric acid forms, and normal temperature time floods 5min, uses washed with de-ionized water then.
2. cleaned sensitization groove drum is immersed in concentration and is respectively in the activation solution of 0.1g/L Palladous chloride and 65ml/L hydrochloric acid in will be 1., and normal temperature is dipping 3min down, with the sample after the washed with de-ionized water activation.
(3) phenoplast groove drum surface chemical plating;
2. cleaned groove drum of step in (2) is put into concentration to be respectively in the mixed liquor A that 40g/L single nickel salt, 8g/L lactic acid and 10g/L propionic acid form; Then A liquid is put in 92 ℃ of water-baths and heated; The mitigation B liquid that concentration is respectively 32g/L inferior sodium phosphate, 20g/L anhydrous sodium acetate and 0.6mg/L thiocarbamide composition is poured in the A liquid; The plating bath pH regulator is 4.8, carries out the 60min electroless plating.Through test, phosphorus content is 8.37% in the nickel-phosphor alloy coating on phenoplast groove drum surface.Compare with the phenoplast matrix, the hardness on surface has improved 5 times after the modification, and wear rate is by 9 * 10
-5G/s is reduced to 2.08 * 10
-6G/s.
Fig. 1 is sem (SEM) picture on the phenoplast groove drum surface after the modification of embodiment 1 preparation, from figure, can see that nickel-phosphorus coating surface presents significantly " spongy top " weave construction.Fig. 2 is sem (SEM) picture behind the phenoplast groove drum surface abrasion after the modification of embodiment 1 preparation.As can be seen from the figure the groove mark of nickel-phosphorus coating wear surface is low weight, and hardness plays main effect, and the coating abrasion resistance properties is better.
Claims (10)
1. a preparation method who is used for phenoplast groove drum surface-treated is characterized in that, this method steps is following,
(1) phenoplast groove drum surface preparation;
1. with cleaning behind the phenoplast groove drum sanding and polishing, dry 8h～10h under 100～120 ℃ of temperature then,
2. cleaned groove drum is immersed in the mixing solutions of being made up of sodium hydroxide solution and yellow soda ash in inciting somebody to action 1., and temperature is controlled at 50～60 ℃, uses washed with de-ionized water subsequently, is immersed in then in the phosphoric acid solution, uses washed with de-ionized water after accomplishing,
3. groove drum is immersed in the mixed solution that ydrogen peroxide 50 and sulfuric acid forms and floods 0～10min in will be 2., uses washed with de-ionized water after taking out,
(2) phenoplast groove drum surface sensitizing activation;
1. the groove drum after 3. step is handled in (1) is immersed in the sensitizing solution of being made up of tin protochloride and hydrochloric acid, dipping 5～10min uses washed with de-ionized water then,
2. cleaned sensitization sample is immersed in the activation solution by Palladous chloride and hydrochloric acid in inciting somebody to action 1., and normal temperature is dipping 2～5min down, uses washed with de-ionized water then,
(3) phenoplast groove drum surface chemical plating;
The 2. cleaned groove drum of step in (2) is put in the mixed liquor A of being made up of single nickel salt, lactic acid, propionic acid; Then A liquid is put in the water-bath and heated; Will be by inferior sodium phosphate, anhydrous sodium acetate, the mitigation B liquid that thiocarbamide is formed is poured in the A liquid; Under certain temperature and pH value condition, carry out 45～60min electroless plating, can obtain to improve the nickel-phosphor alloy chemical plating of phenoplast groove drum wear resistance.
2. method according to claim 1 is characterized in that, the sodium hydroxide solution that preprocessing process is used and the concentration of sodium carbonate solution are respectively 0.5～1.5mol/L and 0.5～1.5mol/L.
3. method according to claim 1 is characterized in that, phosphoric acid and deionized water volume ratio that preprocessing process uses are 1: 3～1: 5.
4. method according to claim 1 is characterized in that, in the mixed solution that ydrogen peroxide 50 that preprocessing process is used and sulfuric acid are formed, the volume ratio of the two is 1: 3.5～1: 5.5.
5. method according to claim 1 is characterized in that, the tin protochloride in the sensitizing solution and the concentration of hydrochloric acid are respectively 8～12g/L and 35～45ml/L.
6. method according to claim 1 is characterized in that the concentration of Palladous chloride and hydrochloric acid is respectively 0.1～0.4g/L in the activation solution, 55～65ml/L.
7. method according to claim 1 is characterized in that, in the electroless plating process in the mixed liquor A concentration of single nickel salt, lactic acid and propionic acid be respectively 28～40g/L, 6～10g/L and 6～10g/L.
8. method according to claim 1 is characterized in that the concentration of inferior sodium phosphate, anhydrous sodium acetate and thiocarbamide is respectively 22～34g/L, 10～20g/L and 0.5～1mg/L in the mixed liquid B.
9. method according to claim 1 is characterized in that, the chemical plating fluid temperature is 80～95 ℃.
10. method according to claim 1 is characterized in that chemical plating fluid pH is controlled at 4.4～5.4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103187538A CN102817017A (en) | 2012-09-03 | 2012-09-03 | Preparation method for surface modification of bakelite groove drum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047834A (en) * | 2014-07-03 | 2014-09-17 | 肇庆匹思通机械有限公司 | Piston ring for rolling piston compressor of air conditioner and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285180A (en) * | 2008-01-11 | 2008-10-15 | 西北工业大学 | Process for preparing micro-coiled carbon fiber/Ni composite material by chemical nickel plating |
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2012
- 2012-09-03 CN CN2012103187538A patent/CN102817017A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285180A (en) * | 2008-01-11 | 2008-10-15 | 西北工业大学 | Process for preparing micro-coiled carbon fiber/Ni composite material by chemical nickel plating |
Non-Patent Citations (2)
| Title |
|---|
| 刘建等: "酚醛塑料化学镀Ni-P合金镀层的显微结构与摩擦磨损性能", 《摩擦学学报》 * |
| 刘磊等: "双氧水-硫酸酸蚀对酚醛塑料/化学镀镍层结合力的影响", 《表面技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047834A (en) * | 2014-07-03 | 2014-09-17 | 肇庆匹思通机械有限公司 | Piston ring for rolling piston compressor of air conditioner and preparation method thereof |
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Application publication date: 20121212 |