阅读说明：本技术 一种用于聚苯硫醚及其复合材料的粗化液及其制备方法和使用方法 (Roughening liquid for polyphenylene sulfide and composite material thereof, preparation method and use method thereof ) 是由 罗坤 吕新伟 于 2020-07-21 设计创作，主要内容包括：本发明公开了一种用于聚苯硫醚及其复合材料的粗化液,该粗化液包括如下用量的组分：10-100ml/L的氢氟酸、10-300ml/L的硫酸、10-100ml/L的硝酸、0.1-5g/L的氯化钠、1-30g/L的九水硝酸铁,余量为水。该粗化液采用化学粗化方式,其可以渗入小孔及凹槽内部,即使针对复杂结构的基材也能实现均匀的微观粗化。(The invention discloses a roughening liquid for polyphenylene sulfide and a composite material thereof, which comprises the following components in parts by weight: 10-100ml/L hydrofluoric acid, 10-300ml/L sulfuric acid, 10-100ml/L nitric acid, 0.1-5g/L sodium chloride, 1-30g/L ferric nitrate nonahydrate, and the balance of water. The coarsening liquid adopts a chemical coarsening mode, can permeate into the small holes and the grooves, and can realize uniform microcosmic coarsening even aiming at the base material with a complex structure.)

1. The roughening liquid for the polyphenylene sulfide and the composite material thereof is characterized by comprising the following components in parts by weight: 10-100ml/L hydrofluoric acid, 10-300ml/L sulfuric acid, 10-100ml/L nitric acid, 0.1-5g/L sodium chloride, 1-30g/L ferric nitrate nonahydrate, and the balance of water.

2. The roughening solution for polyphenylene sulfide and composite material thereof according to claim 1, wherein said roughening solution comprises the following components in amounts: 30-80ml/L hydrofluoric acid, 50-200ml/L sulfuric acid, 30-100ml/L nitric acid, 0.5-2g/L sodium chloride, 5-20g/L ferric nitrate nonahydrate, and the balance of water.

3. The roughening solution for polyphenylene sulfide and composite material thereof according to claim 1 or 2, wherein a mass concentration of said hydrofluoric acid is 55%, a mass concentration of said sulfuric acid is 98%, and a mass concentration of said nitric acid is 68%.

4. The method for preparing a roughening solution for polyphenylene sulfide and composite material thereof according to claim 1, wherein hydrofluoric acid, sulfuric acid, nitric acid, sodium chloride and ferric nitrate nonahydrate are sequentially dissolved in water in proportion to form an aqueous solution.

5. The method for preparing the roughening solution for polyphenylene sulfide and composite material thereof according to claim 4, wherein sulfuric acid is added into water, after the temperature is reduced to room temperature, hydrofluoric acid and nitric acid are added into the sulfuric acid aqueous solution according to the above steps, and finally sodium chloride and ferric nitrate nonahydrate are added and mixed uniformly to obtain the roughening solution.

6. The method for using the roughening solution for polyphenylene sulfide and composite material thereof according to claim 1, wherein the method comprises the step of placing a workpiece made of polyphenylene sulfide material or composite material thereof into the roughening solution for chemical immersion roughening.

7. The method as claimed in claim 6, wherein the roughening time is 5-30 min.

8. The method as claimed in claim 6, wherein the roughening temperature is 20-40 ℃.

Technical Field

The invention relates to the technical field of electroplating pretreatment of plastic products, in particular to a roughening liquid for polyphenylene sulfide and a composite material thereof, and a preparation method and a use method thereof.

Background

Compared with the 3G/4G era, the 5G era with high frequency and high speed has higher requirements and challenges on a plurality of related devices and materials, and the antenna element is one of the devices and the materials. As an important component inside the 5G base station, the number of antenna elements increases sharply, and excellent performance is required to meet the requirement of 5G communication transmission. Compared with the traditional metal antenna oscillator, the 3D plastic antenna oscillator has great advantages in the aspects of loss, cost, weight and the like, and has already obtained the authentication of a base station terminal client. In the following 5G base station construction scheme, the 3D plastic antenna oscillator can comprehensively replace the traditional metal antenna, and the use amount and the output value can meet a peak period.

Polyphenylene sulfide (PPS for short) has good high resistivity and low dielectric constant, and its electric insulation property is less changed with temperature, and can retain good electric insulation property even under the condition of high-temp. And secondly, the PPS has excellent chemical stability, can resist various acid and alkali corrosion, and has corrosion resistance close to that of Polytetrafluoroethylene (PTFE). The excellent comprehensive performance of the PPS makes the PPS the first choice of the mainstream high-frequency communication material at present, and for example, the antenna element adopts the scheme greatly at present.

It is known that the larger the specific surface area, the larger the roughness and the better the bonding force. If the surface of the plastic is required to have a desired roughness, the surface of the material must be roughened. For example, chromic acid is adopted for roughening ABS plastic electroplating, and some polycarbonate common plastics and the like can be subjected to bite roughening by using strong alkali. However, polyphenylene sulfide has excellent corrosion resistance, and therefore, roughening of the surface is difficult. Patent CN109640539A mentions that the roughening method is physical sand blasting, but the roughening method can only roughen the surface of a flat or simpler structure material, and the grain size of the sand is large, so that micro-roughening cannot be achieved, and the bonding force with the surface coating is not ideal.

Disclosure of Invention

In order to solve the problems in the background art, the invention provides a roughening solution for polyphenylene sulfide and composite materials thereof, wherein the roughening solution adopts a chemical roughening mode, can permeate into pores and grooves, and can realize uniform micro-roughening even aiming at a base material with a complex structure. In addition, the invention also provides a preparation method and a use method of the roughening liquid for the polyphenylene sulfide and the composite material thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect of the present invention, a roughening solution for polyphenylene sulfide and composite materials thereof is provided, wherein the roughening solution comprises the following components in amounts: 10-100ml/L hydrofluoric acid, 10-300ml/L sulfuric acid, 10-100ml/L nitric acid, 0.1-5g/L sodium chloride, 1-30g/L ferric nitrate nonahydrate, and the balance of water.

Wherein, the coarsening liquid comprises the following components in parts by weight: 30-80ml/L hydrofluoric acid, 50-200ml/L sulfuric acid, 30-100ml/L nitric acid, 0.5-2g/L sodium chloride, 5-20g/L ferric nitrate nonahydrate, and the balance of water.

Wherein the mass concentration of the hydrofluoric acid is 55%, the mass concentration of the sulfuric acid is 98%, and the mass concentration of the nitric acid is 68%.

In a second aspect of the present invention, a preparation method of the above roughening solution for polyphenylene sulfide and composite material thereof is provided, wherein hydrofluoric acid, sulfuric acid, nitric acid, sodium chloride and ferric nitrate nonahydrate are sequentially dissolved in water according to a certain proportion to form an aqueous solution.

Adding sulfuric acid into water, cooling to room temperature, adding hydrofluoric acid and nitric acid into the sulfuric acid aqueous solution according to the steps, adding sodium chloride and ferric nitrate nonahydrate, and mixing uniformly to obtain the coarsening liquid.

In a third aspect of the present invention, a method for using the above roughening solution for polyphenylene sulfide and composite material thereof is provided, which comprises placing a workpiece made of polyphenylene sulfide material or composite material thereof into the roughening solution to perform chemical immersion type roughening.

Wherein, when the coarsening liquid is used, the coarsening time is 5-30 min.

Wherein, when the coarsening liquid is used, the coarsening temperature is 20-40 ℃.

Compared with the prior art, the invention has the following beneficial effects:

the invention compounds three strong acids (hydrofluoric acid, sulfuric acid and nitric acid) with strong oxidizing property and strong corrosivity to form a solution with strong oxidizing property, which can carry out corrosion coarsening on fillers such as polyphenylene sulfide, glass fiber and the like, can swell a high molecular chain segment and further carry out corrosion, improves the specific surface area of a base material, can further improve the oxidation corrosion capability of the coarsening solution by adding ferric nitrate nonahydrate, and further accelerates the corrosion speed of the coarsening solution on the base material by adding sodium chloride salt substances.

Compared with the traditional physical roughening, the roughening solution disclosed by the invention can permeate into small holes and grooves on the base material, even the base material with a complex structure can realize uniform micro roughening, the chemical roughening greatly improves the direct bonding force of the coating and the base material, and the roughening solution can be applied to the metallization requirements of polyphenylene sulfide and composite materials thereof, such as chemical plating, electroplating or magnetron sputtering.

Detailed Description