pok/9060(圖)
pa66瑞士ems ag-15
pom 工程塑料 f10-02
p化f4008
pvc韓華el-103
gpps廣東星輝(汕頭sk)skg-118
tpu深圳科思創(chuàng)拜耳u-95a10
mvldpe(茂金屬)美國陶氏5400g
pok/9060(圖)
pc帝人 lv-2250y bk
lcp住友化學e5002l nc
pbt美國杜邦ce2558
lcp上野5540g
pok/9060(圖)
pbt基礎---塑料b12gf30 fr bk
lcp美國伊士曼lgm641
ldpe泰國ptt化學ld2426h
tpv 美國aes 121-62m100
(3) the pressure protection pressure of pom injection molding is larger (similar to the injection pressure) to reduce the pressure . the screw speed can not be too high&the residual amount is less.,、the growth of peek resin in the european market, espe---lly the growth of auto parts market, is the fastest. espe---lly for the parts around engine, transmission parts&steering parts, peek plastics are used instead of some traditional high priced metals as manufacturing materials. as the automotive industry adapts to miniaturization, lightweight,&cost reduction requirements, the demand for peek resins will continue to grow. a european model has 44 parts with peek plastics instead of traditional metal products.、9.pvc coating products,、3. the drying of raw materials is not sufficient.,、use electronic appliances: no fuse wire, electro---ic switch, reversion transformer, household appliance handle, connector, shell、performance&use,、abs can also be classified into: general, heat resistant, electroplating, flame-retardant, transparent, antistatic, extruded,&tube grade.,、tpu主要特性1.高耐磨性:tpu與其它材料的taber磨耗對比磨耗條件:cs17輪、1000g/輪,、5000r/m23℃材料磨耗量mg材料磨耗量mgtpu0.5-3.5天然橡膠146尼龍61016耐沖擊pvc160聚酯薄膜18丁---橡膠177尼龍1124增塑pvc187hdpe29丁基橡膠205pf42abs275丁橡膠44cbr280尼龍6649ps324ldpe70尼龍63662.硬度范圍廣:通過改變tpu各應組分的配比,,可以不同硬度的產(chǎn)品,而且隨著硬度的,,其產(chǎn)品仍保持良的彈性,。3.機械強度高:tpu制品的承載能力、抗沖擊性及減震性能---,。耐寒性---:tpu的玻璃態(tài)轉變溫度比較低,,在零下35度仍保持良的彈性、柔順性和其他物理性能。4.加工性能:tpu可采用常見的熱塑性材料的加工進行加工,,如,、擠出、壓延等等,。同時,,tpu與某些高分子材料共同加工能夠性能互補的聚合物合金。,、under normal conditions, ppa resins usually exhibit excellent anti solubility for fatty hydrocarbons, aromatic hydrocarbons, chlorinated hydrocarbons, esters, ketones, alcohols&most aqueous solutions. this kind of resin can not withstand the effect of extremely strong acid&strong oxidizing agent. it is soluble in phenol&cresol. ppa is not naturally flame-retardant. according to the ul94 standard, the flame retardant grade resin is graded to vo until 0.031 inches thick. ,、the reinforced glass fiber reinforced 21002100n, 2100r, 21102110n, 2110r, 22002200r, 22102210r, 23002300n, 2300r, 23102310r, 240024102410r、product&mould design,、pps general - purpose polystyrene is a thermoplastic resin that is a colorless, odorless, tasteless, glossy, transparent bead/granular solid. the density is 1.04 to 1.09, the transparency is 88% to 92%,&the refractive index is 1.59 to 1.60. under the stress action, the birefringence is produced, that is, the so-called stress optical effect. the melting temperature of the product is 150~180 c, the thermal deco-ition temperature is 300, the thermal deformation temperature is 70~100,&the long-term use temperature is 60~80. at the lower temperature of 5~6, the stress can be eliminated&the thermal deformation temperature can be improved. if a little alpha methylstyrene is added to the production process, the heat-resistant grade of the general polystyrene can be improved. ,、 、pdx81338
,、pa46(聚己二酰)是一種具有高熔點和高結晶度的新型聚---樹脂,。中文名pa46工程塑料適用領域塑料加工所屬學科高分子材料與工程俗稱尼龍46工程塑料又名聚己二酰工程塑料pa46工程塑料[1]荷蘭---企業(yè)d帝斯曼工程塑料公早成功地確立了工業(yè)上生產(chǎn)pa46的,商品名稱stanyl,并在全球推廣的耐熱及耐磨的聚---46號,。pa46是由和己二酸縮聚而成的脂肪族聚---,,雖然有尼龍66相似的分子結構,但stanylpa46的每個給定長度的鏈上的---組數(shù)更多,,鏈結構更對稱,;而高度對稱的鏈結構致使其結晶度高約為70%,而且結晶速度快,,因而熔點更高295℃,,熱變形溫度也高,而長期使用溫度(cut5000hours)可達163℃,。這些特性使stanylpa46比其它工程塑料如pa6,、pa66、ppa和聚酯在耐熱,、高溫下的機械強度,、耐磨等方有技術優(yōu)勢,并且成型,,加工更經(jīng)濟,。、according to polymerization method, pvc can be divided into four main categories: suspension polyvinyl chloride, emulsion polymerization, polyvinyl chloride, bulk polymerization, polyvinyl chloride&solution polyvinyl chloride. suspension polyvinyl chloride (pvc) is one of the most productive varieties, accounting for about 80% of the total output of pvc. polyvinyl chloride suspension method is divided into six models according to absolute viscosity: xs-1, xs-2... xs-6; xj-1, xj-2... xj-6. the meaning of each letter in the model: x- suspension; s- loose type; j- compact. method,、pc modification,、general - purpose polystyrene is made of styrene as a monomer through free radical polymerization/ionic polymerization. the methods of production include bulk polymerization, solution polymerization, suspension polymerization&emulsion polymerization. the main methods used in industrial production are suspension polymerization&bulk polymerization.、catalog,、epdm第三單體三元乙丙橡膠合成中的非共軛二烯烴類型的單體是通過與和的共聚,,在聚合物中產(chǎn)生不飽和鍵,,以便實現(xiàn)化。三元乙丙橡膠生產(chǎn)中主要是用enb和雙---dcpd,。其中廣泛使用的是enb,,它比dcpd產(chǎn)品化要快得多。隨著二烯烴第三單體的,,將會有下列影響發(fā)生:更快化率,,---的壓縮形變,高定伸,,促進劑選擇的多樣性,,的防焦性和延展,更高的聚合物成本,。分子量三元乙丙橡膠的分子量及分布可以通過凝膠滲透色譜法使作為溶劑在高溫下150℃測量而得。分子量分布通常被稱為是重量平均分子量與數(shù)量平均分子量的比例,。根據(jù)普通和高度支化的結構,,這個值通常在2到5之間變化。三元乙丙橡膠的門尼粘度可以映其分子量的大小,,三元乙丙橡膠的門尼粘度范圍通常在20到100之間,。
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