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聚(甲基丙烯酸丁酯),Poly(butyl methacrylate) [PBMA];free flow beads, Mw 211,000

别名:聚甲基丙烯酸丁酯;PBMA; 线性分子式: (C8H14O2)n CAS号: 9003-63-8
制造商品牌: 西格玛 Sigma-Aldrich
货号(SKU): 910716
CAS号: 9003-63-8
MDL号: MFCD00084402
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¥960.92

说明

传统的高分子量聚(甲基丙烯酸丁酯)很容易形成熔块,在使用前需要机械力(例如锤击)将其分解成小颗粒。该产品采用防粘连技术开发,具有易于使用、自由流动的珠状形式。

聚(甲基丙烯酸丁酯)在各个领域都有应用。它可用于研究嵌入聚(甲基丙烯酸丁酯)(PBMA)聚合物薄膜中的 EuTFC 中的光致发光。

它还用于涂料、表面改性、固态电池、丝印油墨、塑料和铝的粘合剂、硬质甲基丙烯酸丁酯树脂的增塑剂,以及改善色漆中氯乙烯树脂的户外耐久性。

这种聚合物在室温下溶解,但需要不断搅拌以防止溶剂溶胀的聚合物颗粒形成附聚物并粘在容器壁上。
重要提示:聚合物珠粒应直接筛入搅拌溶剂的漩涡中,以加速润湿和分散。建议持续低剪切搅拌 1-12 小时,具体取决于树脂的等级和浓度。

当溶液在罐中变得清澈后,应将样品铺在 Leneta 卡或玻璃杯上。在溶剂蒸发并在卡片或玻璃上形成薄膜后,不应有任何树脂种子。如果有任何种子,应进一步搅拌罐以充分溶解树脂。在薄膜测试表明没有树脂种子之前,不应停止罐搅拌(取样除外)。任何混浊或残留可能表明一些聚合物仍未溶解。系统中水的存在也会导致浑浊。
加热可缩短溶解时间;大多数常见溶剂无需回流设备即可加热至约 49°C (120°F)。高剪切搅拌也可以缩短溶解时间,但需要注意避免过热和过多的溶剂损失。

一般描述

Additional Benefit:

Conventional high molecular weight poly(butyl methacrylate) easily forms a fused block that require mechanical force (such as hammering) to break it down into small particles before usage. This product was developed with an anti-blocking technology and comes in an easy-to-use, free flowing, bead form.
 

应用

Poly(butyl methacrylate) finds applications in various areas.

It may be used to study the photoluminescence in EuTFC embedded in Poly(butyl methacrylate) (PBMA) polymer films.

It has also been used for coatings, surface modification, solid state battery, silk screen inks, adhesives for plastic and aluminum, plasticizer for hard butyl methacrylate resins, and for improving outdoor durability of vinyl chloride resins in pigmented lacquers.
 

制备说明

How to Prepare Solutions:

This polymer dissolves at room temperature but requires constant agitation to prevent solvent-swollen granules of polymer from forming agglomerates and sticking to the walls of the vessel.
Important: The polymer beads should be sifted directly into the vortex of the stirred solvent to speed wetting-out and dispersion. Continuous low-shear agitation for periods of 1-12 hours, depending on the grade and concentration of resin, is recommended.

After the solution appears clear in the tank, a sample should be spread out on a Leneta card or glass. After the solvent evaporates and a film forms on the card or glass, there should not be any resin seeds. If there are any seeds, the tank should be agitated further to fully dissolve the resin. Tank agitation should not be stopped (except for sampling) until the film test indicates there are no resin seeds. Any cloudiness or residue may indicate that some polymer remains undissolved. The presence of water in the system can also cause cloudiness.
Solution time can be reduced by heating; most common solvents can be heated to approximately 49°C (120°F) without the need for reflux equipment. High-shear agitation also cuts dissolving time, but requires care to avoid overheating and excessive solvent loss.
 
 

属性

描述

Brookfield Viscosity in 40% toluene: 500-800 cPs
Glass transition temperature onset: 20 °C
Maximum % Moisture: 0.30%

形式

solid (bead)

分子量

Mw 211,000

折射率

n/D 1.483

密度

1.07 g/mL at 25 °C (lit.)

InChI

1S/C8H14O2/c1-4-5-6-10-8(9)7(2)3/h2,4-6H2,1,3H3

InChI key

SOGAXMICEFXMKE-UHFFFAOYSA-N

 

安全信息

象形图

Exclamation mark

警示用语:

Warning

危险声明

危险分类

Skin Sens. 1

储存分类代码

11 - Combustible Solids

WGK

WGK 3

商品规格
属性名称属性值
储存温度 Storage temp.常温阴凉避光
全球实时库存 Availability √美国St. Louis ≥ 55 | 欧洲Eur. ≥ 16 | 東京Tokyo ≥ 8 | 香港与北京 ≥ 10
商品标签 [tags]