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亞克力的加工工藝

亞克力可以采用澆鑄、注塑、擠出、熱成型、激光雕刻、激光切割等工藝。
澆鑄成型
澆鑄成型用于成型有機(jī)玻璃板材、棒材等型材，即用體本體聚合方法成型型材。澆鑄成型后的制品需要進(jìn)行后處理，后處理?xiàng)l件是60℃下保溫2小時(shí)，120℃下保溫2小時(shí)。
注塑成型
注塑成型采用懸浮聚合所制得的顆粒料，成型在普通的柱塞式或螺桿式注塑機(jī)上進(jìn)行。工藝參數(shù)包括螺桿式注塑機(jī)、柱塞式注塑機(jī)、料筒溫度后部180℃～200℃;中部 190℃～230℃;前部 180℃～210℃;噴嘴溫度180℃～210℃或210℃～240℃;模具溫度℃ 40℃～80℃;注射壓力80MPa～120MPa 或80MPa～130MPa;保壓壓力MPa 40MPa～60MPa;螺桿轉(zhuǎn)速-1.20rp.m～30rp.m;注塑制品也需要后處理消除內(nèi)應(yīng)力，處理在70～80℃熱風(fēng)循環(huán)干燥箱內(nèi)進(jìn)行，處理亞克力棒時(shí)間視制品厚度，一般均需4小時(shí)左右。
熱成型
熱成型是將有機(jī)玻璃板材或片材制成各種尺寸形狀制品的過(guò)程，將裁切成要求尺寸的坯料夾緊在模具框架上，加熱使其軟化，再加壓使其貼緊模具型面，得到與型面相同的形狀，經(jīng)冷卻定型后修整邊緣即得制品。加壓可采用抽真空牽伸或用對(duì)帶有型面的凸模直接加壓的方法。采用快速真空低牽伸成型制品時(shí)，宜采用接近下限溫度，成型形狀復(fù)雜的深度牽伸制品時(shí)宜采用接近上限溫度，一般情況下采用正常溫度。

部分型號(hào)部分物性表

LDPE (low density polyethylene # LDPE) /1938Z500/ SABIC of Saudi Arabia
Use: other
Feature remark: product trademark: SABIC
Important parameters: melt flow rate: 38 g/10min density: 0.919 g/cm3 VEKA softening point: 78 C
Manufacturer: Saudi Basic Industry Company
LDPE (low density polyethylene LDPE #) /FT3240/ Borealis
Use: film grade
Feature notes: no additives
Important parameters: melt flow rate: 0.25 g/10min density: 0.924 g/cm3 tensile strength: 26 MPa breaking elongation: 550% VEKA softening point: 97 C
Manufacturer: Nordic Chemical Co., Ltd.
LDPE (low density polyethylene LDPE #) /MA9230/ Borealis
Use: other
Feature notes: good rigidity and high gloss.
Important parameters: melt flow rate: 22 g/10min density: 0.923 g/cm3 notch impact strength: 160 elongation at break: 130% hardness: 49 VEKA softening point: 92 C
Manufacturer: Nordic Chemical Co., Ltd.
LDPE (low density polyethylene # LDPE) /F1107/ Taiwan poly
Use: film grade
Characteristic notes: contractility
Important parameters: melt flow rate: 1.1 g/10min density: 0.922 g/cm3 notch impact strength: 140 VEKA softening point: 96 C embrittlement temperature: -70 C
Manufacturer: Asian aggregated Limited by Share Ltd
LDPE (low density polyethylene # LDPE) /1922Z900/ SABIC of Saudi Arabia
Use: other
Feature remark: product trademark: SABIC
Important parameters: melt flow rate: 22 g/10min density: 0.919 g/cm3 VEKA softening point: 83 C
Manufacturer: Saudi Basic Industry Company
LDPE (low density polyethylene LDPE /XDS34/ Australia Qenos #)
Use: film grade
Important parameters: melt flow rate: 0.3 g/10min density: 0.922 g/cm3 tensile strength: 23 MPa breaking elongation: 820%
Manufacturer: Qenos, Australia
LDPE (low density polyethylene LDPE /LDJ225/ Australia Qenos #)
Use: film grade
Important parameters: melt flow rate: 2.5 g/10min density: 0.922 g/cm3 tensile strength: 16 MPa breaking elongation: 720%
Manufacturer: Qenos, Australia
LDPE (low density polyethylene # high-pressure polyethylene) /2800/ Holland DSM
Use: film grade
Characteristic feature: non slip agent, minimum film thickness 0.045mm
Important parameters: melt flow rate: 0.3 g/10min density: 0.922 g/cm3
Manufacturer: Holland DSM company
LDPE (low density polyethylene # high-pressure polyethylene) /1I50A/ Lanzhou petrochemical
Use: other
Important parameters: melt flow rate: 50 g/10min density: 0.916 g/cm3 tensile strength: 7.5 MPa breaking elongation: 370% VEKA softening point: 73 C
Manufacturer: PetroChina Lanzhou Petrochemical Branch
LDPE (low density polyethylene # LDPE) /NA208/ Taiwan polymerization
Use: film grade
Note: the characteristics of powder coating
Important parameters: melt flow rate: 22 g/10min density: 0.924 g/cm3 hardness: 53 VEKA softening point: 96 C embrittlement temperature: -60 C
Manufacturer: Taiwan polymerized chemical Limited by Share Ltd
LDPE (low density polyethylene # LDPE) /611A/ DuPont dow
Use: film grade
Feature notes: product trademark DOW
Important parameters: melt flow rate: 0.88 g/10min density: 0.924 g/cm3, notched impact strength: 120 tensile strength: 16.9 MPa, elongation at break: 560% bending modulus: 227 MPa, VEKA softening point: 97.2 degrees.
Manufacturer: Dow DuPont Co
LDPE (low density polyethylene LDPE /DFDA-0562/ Union Carbide #)
Use: film grade
Characteristic notes: good impact resistance and tearing
Important parameters: melt flow rate: 0.1 g/10min density: 0.922 g/cm3
Manufacturer: Union Carbine Co
LDPE (low density polyethylene LDPE #) /LD-62/ Korea Dalin
Use: film grade
Feature notes: characteristics: NECK-IN, excellent adhesion, tasteless.
Important parameters: melt flow rate: 7 g/10min density: 0.919 g/cm3
Manufacturer: Dalin, Korea
LDPE (low density polyethylene LDPE #) /2060/ America flintcomb ash
Use: other
Characteristic notes: high flow characteristics and good processing performance. Application areas:
Important parameters: melt flow rate: 30 g/10min density: 0.921 g/cm3 tensile strength: 9 MPa breaking elongation: 375% hardness: 50 VEKA softening point: 93 C
Manufacturer: American flint Hill resources
LDPE (low density polyethylene LDPE # /HMA025/ Mobil Exxon)
Use: other
Characteristic notes: additive: UV stabilizer
Important parameters: melt flow rate: 8 g/10min density: 0.964 g/cm3
Manufacturer: Exxon Mobil Corp
LDPE (low density polyethylene LDPE # /HMA014/ Mobil Exxon)
Use: other
Characteristic notes: additive: UV stabilizer
Important parameters: melt flow rate: 4 g/10min density: 0.96 g/cm3
Manufacturer: Exxon Mobil Corp
LDPE (low density polyethylene # LDPE) /PX 20020X/ Pemex in Mexico
Use: other
Important parameters: melt flow rate: 2 g/10min density: 0.92 g/cm3 tensile strength: 10.9 MPa breaking elongation: 640%
Manufacturer: Mexico national oil company
LDPE (low density polyethylene # high-pressure polyethylene) /G MN71020/ quantum chemistry
Use: other
Important parameters: melt flow rate: 22 g/10min density: 0.915 g/cm3, tensile strength: 11 MPa elongation at break: 550% bending modulus: 121 MPa hardness: 52 VEKA softening point: 83 C embrittlement temperature: -45 C
Manufacturer: American quantum chemical company
LDPE (low density polyethylene # high-pressure polyethylene) /G MN71120/ quantum chemistry
Use: other
Important parameters: melt flow rate: 22 g/10min density: 0.915 g/cm3 tensile strength: 11 MPa elongation at break: 550% bending modulus: 121 MPa hardness: 52 VEKA softening point: 83 temperature embrittlement temperature: -56