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分享塑料成品電鍍前的外表處置手藝

宣布時候:2020-01-09 17:08:11 禮拜四
擇要:

SULIAOCHENGPINDEWAIBIAOCHUZHISHOUYAOBAOHANTUCENGCHUZHIHETUCENGCHUZHI。   PUTONGLAIJIANG,SULIAODEJIEJINGDUDA,JIXINGXIAOHUOFEIJIXING,WAIBIAONENG […]

SULIAOCHENGPINDEWAIBIAOCHUZHISHOUYAOBAOHANTUCENGCHUZHIHETUCENGCHUZHI。

 

PUTONGLAIJIANG,SULIAODEJIEJINGDUDA,JIXINGXIAOHUOFEIJIXING,WAIBIAONENGDI,HUIYINGXIANGTUCENGDEFUCHULI。YINWEISULIAOSHIYIZHONGFEIDAODIANJUEYUANTI,BUNENGANDIANDUGONGYIGUICHENGJIANJIEZAISULIAOWAIBIAOTUFU。SHIYI,ZAITINGZHIWAIBIAOCHUZHIZHIQIAN,YINGTINGZHIXUYAODEYUCHUZHI,YIJINBUTUCENGDEFUCHULI,BINGWEITUCENGGONGGEIJUBEIJIECHUFUCHULIDEDAODIANDICENG。

TUCENGDEYUCHUZHIBAOHANSULIAOWAIBIAODETUOZHICHUZHI,JIYOUWUHETUOMOJIXIZHUOWAIBIAO,HESULIAOWAIBIAODEHUOHUACHUZHI,YIJINBUTUCENGDEFUCHULI。

 

一。塑料成品的脫脂
近似于金屬成品的脫脂。塑料成品的脫脂可接納無機溶劑或含外表活性劑的堿性水溶液停止洗濯。無機溶劑脫脂合用于洗濯塑料外表的白臘、蜂蠟、油脂等無機污垢。利用的無機溶劑不消融、收縮或開裂塑料,具備低沸點、揮發性、無毒性和不可燃性。

JIANXINGSHUIRONGYEHEYONGYUNAIJIANSULIAODETUOZHI。RONGYEDANGZHONGHANYOUKEXINGNA、JIANYANHEGELEIWAIBIAOHUOXINGWUZI。ZUIJINGCHANGSHIYONGDEWAIBIAOHUOXINGJISHIOPXILIE,JIWANJIFENJUYANGYIXIMI,TABUHUIGOUCHENGPAOMOHUOLIUZAISULIAOWAIBIAO。

 

2。塑料成品外表活化
這類活化是為了進步塑料的外表能,即在塑料外表天生一些極性基團或使其變粗,使涂層更輕易潤濕和吸附在整機外表。外表活化有多種方式,如化學氧化法、火焰氧化法、溶劑蒸氣刻蝕法和電暈放電氧化法等。此中,最經常使用的方式是化學晶體氧化,通經常使用作鉻酸處置溶液。其典范配方為重鉻酸鉀4.5%,水8.0%,濃硫酸(96%跨越)87.5%。
一些塑料產物,如聚苯乙烯和ABS塑料,能夠間接涂覆而不停止化學氧化處置。
為了取得高品質的涂層,它也合用于化學氧化處置。比方,ABS塑料脫脂以后,能夠用稀鉻酸處置液停止蝕刻。典范的處置配方為420gL鉻酸和200mlL硫酸(比重1.83)。典范的處置工藝為65℃、70℃5min、10min、洗濯、枯燥。

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TUCENGYUCHUZHIDEMUBIAOSHIJINBUTUCENGYUSULIAOWAIBIAOJIANDEFUCHULI,BINGZAISULIAOWAIBIAOGOUCHENGDAODIANJINSHUJIBAN。

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一。機器粗化和化學粗化
別離接納機器粗化和化學粗化兩種方式對塑料外表停止粗化,以增添涂層與基體的打仗面積。普通來講,機器粗化的連系力僅為化學粗化的10%擺布。

 

2。化學脫脂
塑料外表涂膜后的脫脂方式與涂膜后不異。

 

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SI。HUOHUA

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5GE。FUYUANCHUZHI

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6。HUAXUEDUDEMUBIAOSHIZAISULIAOCHENGPINWAIBIAOGOUCHENGDAODIANJINSHUMO,WEIZAISULIAOCHENGPINZHISHANGDIANDUJINSHUCENGDIZAOQIANTI。SHIYI,HUAXUEDUSHISULIAODIANDUDEGUANTOUBUZOU。

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