より多い 80% 二輪車の外装部品の (スクーター) ABSプラスチック製品です, そのため、コーティングの品質はオートバイの市場競争力に直接影響します. 本稿では、ABSプラスチック製品の前処理とコーティング技術を紹介します。, and analyzes and discusses some special requirements for the pretreatment and coating of ABS plastics due to the particularity of ABS plastic materials.
Surface properties
ABS (acrylonitrile, butadiene and styrene terpolymer) is a thermoplastic resin plastic, which has high mechanical strength and good processing performance, but its hardness is low, weather resistance and solvent resistance is poor, which can be improved by secondary processing of plastic surface. Coating is one of the important methods of secondary processing of plastic surface. ABS plastics often have problems such as bad adhesion effect, loss of light and pitting point. The main reasons are: surface tension (less than 100mn/cm), solubility parameters are different from solubility parameters of resin and solvent in coating, and the internal stress produced during forming is easy to produce crack of paint film or reduce coating luster, and electrostatic and dust are easily generated on the surface, which affects coating effect Fruit.
Surface preparation
The oil pollution on the plastic surface will greatly reduce the adhesion of the coating, which contains the film remover (stearate, wax, ポリビニルアルコール, NS。), auxiliary (plasticizer, antistatic agent, 潤滑剤, anti-aging agent, anti-combustion agent), and other (lubricating oil, dust), NS.
processing method
(1) Manual friction test is a kind of treatment method with high labor intensity, and it is usually used in low yield. There are many disadvantages in manual friction test. Due to artificial reasons, the quality is unstable. The dirty cloth will cause the plastic surface to be polluted again, and the solvent is harmful to the operator and pollutes the environment.
(2) The method can effectively remove the weak interface layer such as oil pollution, film remover and antistatic agent, and make the surface coarsening porous, thus improving the adhesion of the coating. But high temperature operation is not conducive to safety production.
(3) The water solution treatment method is especially suitable for the situation of large production and high production efficiency. This method has the advantages of stable quality, light environmental harm, low cost and easy operation, and is gradually replacing the two methods.
technological process
Pre degreasing → degreasing → primary water washing → secondary water washing → deionization water washing → activation → blowing drying → water drying (70-75 ℃, 15min)
The pretreatment of ABS plastic products can be produced in line. All processes are spray treated and transported by hanging chain. The equipment adopts the structure of sealed dust chamber.
Degreasing
一般的に, the water degreaser containing surfactant is used for spray cleaning, the time is 2-3min, the injection pressure is 20-30psi, and the temperature is 45-55 ℃. Degreasing formula contains phosphate, silicate, surfactant, inorganic minerals, NS. When degreasing agent is used repeatedly, impurities and dirt in the tank liquid accumulate, which will cause the re attachment of the plastic surface dirt, which will affect the coating quality. したがって、, the management of filtration and renewal of the tank liquid should be strengthened. The degreasing effect of water degreaser is good and the quality is stable, but the wastewater discharged by the agent contains phosphorus. 同時に, it is an etching product. Glass fiber reinforced plastic must be lined in the tank and equipment of low carbon steel to prolong the service life of the equipment. In view of the above two points, it is suggested to adopt stainless steel structure equipment and tank body to increase the service life of the equipment. Before discharge, the wastewater can be discharged after it is treated to the standard.
activation
Activation is a process of water meter adjustment containing water macromolecules. It can be sprayed at room temperature for 1min and injection pressure of 7-14psi.
The activation can help to remove hard water, convert the hydrophobic plastic surface into the surface containing hydrophilic base, and form a uniform film on the plastic surface, with a thickness of no more than 5nm, but it improves the wettability and adhesion of the coating to the plastic surface. After activation, it should be dried with clean compressed air and dried at 70-75 ℃ for 15min.
JasonMould Industrial CompanyLimitedについて
ジェイソンモールドは 中国の金型メーカー プラスチック金型の- 射出成形金型, ダイカスト金型, プラスチックブロー成形, 回転成形, 医療 プラスチック射出成形, ツーショット プラスチック射出成形, インサート成形, オーバーモールド, 金属射出成形, マイクロ射出成形, 粉末射出成形, セラミック射出成形, 液体射出成形, ハスキーインジェクションモールディング, 家庭用カビ, 鋳造金型, ダイモールドツール, カスタムモールド, 中国のカビ, ラピッドプロトタイピングツール, プラスチックプロトタイピングツーリング, パンチプレス工具, 携帯電話/携帯電話部品用の金型と工具, 自動車部品, 掃除機, 充電式ツール, 電話, コピー機, コンピューター, マルチメディアスピーカー, および他の多くの電子製品および家電製品. また、プラスチック製品メーカー, 金型メーカー中国- プラスチックの部品, プラスチック製の水タンク, プラスチックボール, プラスチック容器, プラスチックバックル, プラスチックアンカー, プラスチックハンガー, プラスチックスプーン, プラスチックパイプフィッティング, プラスチックタンブル, プラスチック製食器, プラスチックのコップ, ペットボトル, プラスチックトレイ, プラスチック化粧品容器, プラスチックケース, プラスチック製の食品容器, プラスチック製の椅子, プラスチックキャップ, プラスチックキャップクロージャー, プラスチックチューブ, プラスチック製の水道管, プラスチック製のノブ, プラスチックチューブ, プラスチック製ユーティリティボックス, プラスチックラックなど.
連絡先:
人: ジェームズ・ユアン
会社: JasonMould Industrial Company Limited
追加: 竜崗村,Long西町,博羅県,恵州市,広東省, 中国
電話: 86-752-6682869
Eメール: [email protected]
