└PBT KP515G30WBL」、PP F600、TPU 9385、EVA LV266、‖。PP PT181 、ABS SD-0150W PTFE L169J(粉)、PA6 GR20、PETG GN001、→,EAA 1430、TPE VT3108、PA66 N-276、PA6 RS6000‖。 FL00218、PA6 2412GHF6、‖。ABS MG37EPX 、‖。LCP E6807LHFL、LDPE LL7420D1、HDPE 8012、‖。PP HE125MO、→,PC DDF029、‖。PC GS-2040MDF、→,PP PT6F1 UHMWPE U010T、‖。PC FXG121R、‖。PA66 RFL36XX GY 、‖。PA6T HT1V-4H FWA、→,PC ML-6500ZAH 、‖。PBT HX420HP、PA66 VF008、PP PM383 ‖。 ML50、PMMA GS、‖。PBT EC44G-30POE 8203、→,PA6 CM1021TM、→,氟橡膠 FE5624Q、‖。PA66 70G33HS1L、‖。PBT WC003、‖。PP GB311U、PBT 1210G3、→,TPV 3780、→,PA66 A30H1V25、→,PP P524MABS surface pretreatment is necessary to pre treat the plastic surface before painting, in order to improve the adhesion of the coating on the surface of the plastic and improve the appearance of the plastic. (1) when annealed plastic ABS is formed, it is easy to form internal stress and easy to crack at the stress concentration after coating. Annealing or surface treatment can be used to eliminate stress. Annealing treatment is to heat the ABS plastic molding parts below the thermal deformation temperature, that is, 60 degrees centigrade, and heat preservation 2H. In order to reduce investment in equipment, the whole surface treatment can be used to improve the surface condition. The formulation and process of the whole surface treatment are listed in Table 1. Table 1 whole surface treatment formula and process parameters / 1 water / 3 temperature / temperature / C room temperature treatment time /mi15 - 20 (2) oil removal ABS plastic parts are often contaminated with oil, hand sweat and demoulding agent, which will make the adhesion of the coating worse, the coating produces cracking, foaming and shedding. Oil removal should be carried out before coating. ABS plastic parts are usually cleaned with gasoline or alcohol and then chemical degreasing. The process formula is listed in Table 2. Table 2 the residual alkaline solution on the surface of the workpiece should be thoroughly cleaned after the process parameters of sodium hydroxide (S/L) sodium 50~70 phosphate (S/L) 20~30 sodium carbonate (S/L) 10~20 surface active agent (S/L) 5~10 temperature / 50~60 treatment time /min10 to 15 chemical oil, and cleaned with pure water Zui, drying or drying. (3) electrical and dust removal plastic products are insulators, and the surface resistance is generally around 1013 ohms, which is easy to generate static electricity. After charged, it is easy to adsorb tiny dust in the air and stick to the surface. It is very difficult to remove dust from electrostatic adsorption by general blowing method. High pressure ionized air flow has good effect in addition to electrostatic precipitator.【通用隨機(jī)圖片】
TPV熱塑性三元乙丙動(dòng)態(tài)硫化彈性體/橡膠的主要性能:TPV易于焊接、可重復(fù)使用、環(huán)保無毒。TPV熱塑性三元乙丙動(dòng)態(tài)硫化彈性體/橡膠的主要特點(diǎn):1、優(yōu)異的抗老化性能和良好的耐候、耐熱性能;2、優(yōu)異的抗yong久變形性能;3、優(yōu)異的抗張強(qiáng)度、高韌性和高回彈性;4、優(yōu)異的環(huán)保性能和可重復(fù)使用;5、優(yōu)異的電絕緣性能;6、硬度范圍廣泛;7、使用溫度范圍廣泛;8、顏色多樣化,有全透明、半透明、淺色系列,著色容易,容易加工成型;9、可與PP、PA、PC‖、ABS、PS、PBT、PET等多種材料共注射或擠出成型。TPV 8221-60、TPV 203-50、TPV 281-45MED、TPV 281-55MED、TPV 281-64MED、TPV 281-73MED
TPV thermoplastic three ethylene propylene dynamically vulcanized elastomer / rubber main properties: TPV is easy to weld, reusable, environmentally friendly and non-toxic. TPV thermoplastic three EPR dynamic vulcanized elastomer / rubber main characteristics: 1, excellent anti-aging properties and good weather resistance, heat-resistant performance; 2, excellent resistance to Yong long deformation properties; 3, excellent tensile strength, high toughness and high resilience; 4, excellent environmental protection and reusable; 5, excellent electrical insulation 6, 6, a wide range of hardness; 7, a wide range of use temperature; 8, color diversity, transparent, translucent, light color series, easy coloring, easy to process molding; 9, can be used with PP, PA, PC, ABS, PS, PBT, PET and other materials co injection or extrusion molding. TPV 8221-60, TPV 203-50, TPV 281-45MED, TPV 281-55MED, TPV 281-64MED, TPV 281-73MED
化學(xué)改性的常用方法:一種是以被改性的樹脂單體為一元,改性單體為另一元,在反應(yīng)釜內(nèi)進(jìn)行接枝共聚并獲得新的共聚物;第二種方法是將被改性樹脂作為主要原料,通過增加樹脂分子中的極性元素對(duì)其進(jìn)行有效的改性。
The common methods of chemical modification are: one is one element of the modified resin monomer, the modified monomer is another, graft copolymerization in the reaction kettle and a new copolymer. The second method is to modify the modified resin as the main raw material by increasing the polar element in the resin molecule.
聚丙烯廣泛用于塑料管材的生產(chǎn),但PP是一種抗老化性能差的材料,為了改善PP的性能,通過化學(xué)改性方法發(fā)明了PP-B和PP-R樹脂。
Polypropylene is widely used in the production of plastic pipes, but PP is a kind of poor anti-aging material. In order to improve the performance of PP, PP-B and PP-R resin have been invented by chemical modification.
PP-B樹脂是丙烯和乙烯的嵌段共聚物。合成丙烯-乙烯嵌段共聚物要用兩個(gè)聚合反應(yīng)釜
PP-B resin is a block copolymer of propylene and ethylene. Two polymerization reactors for the synthesis of propylene ethylene block copolymers
PA66對(duì)許多溶劑具有抗溶性,但對(duì)酸和其它一些氯化劑的抵抗力較弱。
PA66 is resistant to many solvents, but is less resistant to acids and other chlorinated agents.
工藝條件
process conditions
干燥處理:如果加工前材料是密封的,那么就沒有必要干燥。然而,如果儲(chǔ)存容器被打開,那么建議在85℃的熱空氣中干燥處理。如果濕度大于0.2%,還需要進(jìn)行105℃,12小時(shí)的真空干燥。熔化溫度:260~290℃。對(duì)玻璃添加劑的產(chǎn)品為275~280℃。熔化溫度應(yīng)避免高于300℃。 模具溫度:建議80℃。模具溫度將影響結(jié)晶度,而結(jié)晶度將影響產(chǎn)品的物理特性。對(duì)于薄壁塑件,如果使用低于40℃的模具溫度,則塑件的結(jié)晶度將隨著時(shí)間而變化,為了保持塑件的幾何穩(wěn)定性,需要進(jìn)行退火處理。注射壓力:通常在750~1250bar,取決于材料和產(chǎn)品設(shè)計(jì)。
Drying: if the material is sealed before processing, there is no need to dry. However, if the storage container is opened, it is recommended to dry at 85 C hot air. If the humidity is greater than 0.2%, the vacuum drying at 105 C and 12 hours is required. Melting temperature: 260~290 C. The product of glass additive is 275~280 C. The melting temperature should be avoided above 300 degrees C. Mold temperature: recommended 80 degrees C. The mold temperature will affect the crystallinity, and the crystallinity will affect the physical characteristics of the product. For thin-walled plastic parts, if the mold temperature below 40 degrees is used, the crystallinity of the plastic parts will change with time. In order to maintain the geometric stability of the plastic parts, the annealing process is needed. Injection pressure: usually in 750~1250bar, depending on material and product design.
注射速度:高速(對(duì)于增強(qiáng)型材料應(yīng)稍低一些)。 高性能PC‖/ABS A2200合金材料具有高抗沖擊、優(yōu)良的耐候性和亞光效果,可應(yīng)用于車載音響和DVD系統(tǒng)、汽車儀表板等部件。 電鍍級(jí) PC‖/ABS A2200MP具有杰出的電鍍效果和良好的耐低溫性能,可應(yīng)用于汽車把手等電鍍部件。
Injection speed: high speed (for enhanced material should be slightly lower). High performance PC /ABS A2200 alloy material has high impact resistance, excellent weatherability and sub light effect. It can be used in vehicle audio, DVD system, vehicle dashboard and other components. Electroplated grade PC /ABS A2200MP has excellent electroplating effect and good low temperature resistance. It can be applied to electroplating parts such as car handles.
注意事項(xiàng):/PC‖塑料成型過程問題
Note: /PC plastics molding process problem
??產(chǎn)生原因 及解決辦法
Causes and Solutions
??1、銀絲
1, silver silk
??a、原材料受潮————干燥原料
A, raw materials are dampened - dry raw materials
??b、樹脂過熱分解————減低成型溫度
B, superheated decomposition of resin -- reducing molding temperature
??c、螺桿壓縮比小,背壓不足————增加背壓
C, screw compression ratio is small, back pressure is insufficient -- increase back pressure.
??d、模溫過低————加熱模具
D, low mold temperature -- heating die
??e、排氣不良————模具分型面開排氣槽
E and poor exhaust -- the exhaust manifold of the mold parting surface、→,CAB 285A2R30016PPO INT1512、‖。LCP L204G35、‖。PPS FZ-1140-D5、TPE XL9055X-1、TPE BT-1163D、‖。POM W2320-0035LEV PA9T G2450-KY008