Alcotex 7206

One of the core challenges in the suspension polymerization process of polyvinyl chloride (PVC) is polymer scaling on the inner walls and internal components of the reactor. Scale buildup has a negative impact on reactor heat transfer and extends the time it takes for polymerization. More importantly, companies have to do expensive, high-pressure cleaning on their reactors on a regular basis, which reduces how much the equipment can be used. ALCOTEX 225 and ALCOTEX 234 scale inhibitors offer a way to address this issue.     1.Industrial Impacts and Scaling Inhibition Needs of Scaling  Scaling happens in polymerization when free radicals or monomers in water stick to solid surfaces like reactor walls or agitators. They then deposit and polymerize more on these surfaces. These solids, especially metals, can have higher temperatures or provide good places for polymerization, which causes local hot spots or uneven reactions. Scaling has several negative effects on S-PVC production, including:  Limited Production Cycle: A certain number of runs must be completed before shutdown for cleaning, limiting continuous production capacity. Product quality fluctuations: Detached scale contaminating the resin can lead to deterioration in product color, thermal stability, and impurity content. Energy consumption and maintenance costs: Increased energy consumption due to the investment in high-pressure cleaning equipment and labor, as well as decreased heat transfer efficiency. The S-PVC industry focuses on making good scale inhibitors because it helps reactors run longer without stopping.   2. ALCOTEX 225: The Main Barrier Against Reactor Wall Sticking ALCOTEX 225 is clearly defined as a scale inhibitor for vinyl chloride suspension polymerization. Its design goal is to eliminate polymer scale buildup on the inner wall of the reactor. 2.1. Physicochemical Properties Property Typical Value Appearance Dark blue aqueous solution Total Solids 5.0–6.0 PH 12.5–13.0 2.2. Mechanism of Action ALCOTEX 225 (POVAL L-10) achieves anti-sticking by forming an extremely thin protective layer on the inner wall of the reactor. This protective layer primarily functions to: Passivate active sites: Cover and passivate active sites on the metal surface that may initiate free radical polymerization. Change surface energy: Adjust the surface energy of the reactor wall to make it unfavorable for the adsorption and wetting of polymers and monomers. Physical Barrier: Establishes a physical barrier to effectively prevent the adhesion and deposition of VCM monomers or primary polymer particles on the reactor wall. This treatment method ensures the reactor wall remains clean during polymerization, which is key to achieving a significant increase in the number of production runs before cleaning.   3. ALCOTEX 234: Synergistic Protector for Internal Components ALCOTEX 234 is not used alone but is designed to work in conjunction with ALCOTEX 225 as a scaling inhibitor. It focuses on areas that are difficult for ALCOTEX 225 to completely cover or are susceptible to mechanical wear. 3.1. Physicochemical Properties Property Typical Value Appearance Dark blue aqueous solution Freezing Point - 1 Specific Gravity 1.1 Total Solids 19.0-21.0 Viscosity @20℃ < 20 PH > 13.0 3.2. Synergistic Application and Targeted Scaling The main function of ALCOTEX 234 is to eliminate scaling on baffles, agitators, or other areas with poor surface quality inside the reactor. Key Protection Areas: Baffles and agitators are areas subjected to high shear forces during polymerization and are also the areas with the most intense heat transfer and monomer/polymer contact. Scaling in these areas is often more stubborn and difficult to inhibit. Synergistic Effect: By applying ALCOTEX 225 to the reactor walls and ALCOTEX 234 to internal components such as agitators and baffles, a comprehensive, high-strength protection is achieved over the entire polymerization contact surface. This combined application strategy is essential for improving overall production efficiency.   4. Application Implementation and Maximizing Industrial Benefits The use of ALCOTEX 225 and 234 imposes specific requirements on the operation of the polymerization process to ensure maximum effectiveness: Thorough Pretreatment: Before first use of the system, all previous polymerization residues in the reactor must be thoroughly removed, and the reactor must be cleaned and dried. Any residual polymer or impurities will affect the adsorption and film formation of the inhibitor. Formulation and Measurement: The concentration and coating amount of the inhibitor need to be precisely optimized based on the reactor geometry, material, and polymerization formulation of the target PVC product. Industrial Benefits: Successful application of the inhibitor system directly results in higher production runs, significantly increased productivity, and improved stability of PVC resin quality.   The ALCOTEX 225 and 234 system is not merely a cleaning agent, but a specialized surface modification and protection system. Together, they constitute a mature and efficient S-PVC scaling management solution, which is a key technological support for modern PVC polymerization plants to achieve high-yield, stable, and high-quality production.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com

Sarung tangan merupakan alat pelindung yang paling umum digunakan di laboratorium selain kacamata. Ada banyak jenis sarung tangan, dan setiap sarung tangan memiliki kegunaan yang berbeda-beda. 1. Karet alam (lateks)Sarung tangan lateks, yang terbuat dari karet alam, biasanya tidak memiliki lapisan dan tersedia dalam versi bersih dan steril. Sarung tangan ini dapat memberikan perlindungan yang efektif terhadap alkali, alkohol, dan berbagai larutan kimia encer, serta dapat mencegah korosi akibat aldehida dan keton dengan lebih baik. 2. Sarung tangan polivinil klorida (PVC)Sarung tangan ini tidak mengandung alergen, bebas bedak, memiliki produksi debu rendah, kandungan ion rendah, ketahanan korosi kimia yang kuat, dapat melindungi hampir semua zat kimia berbahaya, dan juga memiliki sifat antistatis. Permukaan yang ditebalkan dan dirawat (seperti permukaan bulu domba) juga dapat mencegah keausan mekanis umum, dan jenis yang ditebalkan juga dapat mencegah dingin, dengan suhu pengoperasian -4℃ hingga 66℃. Dapat digunakan di lingkungan bebas debu.Standar penilaian sarung tangan PVC:Produk Kelas A, tidak ada lubang di permukaan sarung tangan (sarung tangan PVC dengan bubuk), bubuk seragam, tidak ada bubuk yang terlihat, warna putih susu transparan, tidak ada noda tinta yang terlihat, tidak ada kotoran, dan ukuran serta sifat fisik setiap bagian memenuhi persyaratan pelanggan.Produk kelas B, noda sedikit, 3 bintik hitam kecil (1mm≤diameter≤2mm), atau sejumlah besar bintik hitam kecil (diameter≤1mm) (diameter> 5), deformasi, kotoran (diameter≤1mm), warna agak kuning, bekas paku serius, retakan, dan ukuran serta sifat fisik setiap bagian tidak memenuhi persyaratan. 3. Sarung tangan PESarung tangan PE adalah sarung tangan sekali pakai yang terbuat dari polietilena. Sarung tangan ini kedap air, kedap minyak, antibakteri, dan tahan terhadap asam dan basa. Catatan: Sarung tangan PE aman digunakan untuk makanan dan tidak beracun. Sebaiknya sarung tangan PVC dijauhkan dari makanan, terutama jika makanan panas. 4. Sarung tangan karet nitrilSarung tangan karet nitril biasanya dibagi menjadi sarung tangan sekali pakai, sarung tangan tanpa lapisan tugas sedang, dan sarung tangan berlapis tugas ringan. Sarung tangan ini dapat mencegah erosi oleh minyak (termasuk lemak hewani), xilena, polietilena, dan pelarut alifatik; sarung tangan ini juga dapat mencegah sebagian besar formulasi pestisida dan sering digunakan dalam penggunaan komponen biologis dan bahan kimia lainnya. Sarung tangan karet nitril tidak mengandung protein, senyawa amino, dan zat berbahaya lainnya, dan jarang menyebabkan alergi. Sarung tangan ini bebas silikon dan memiliki sifat antistatis tertentu, yang cocok untuk kebutuhan produksi industri elektronik. Sarung tangan ini memiliki residu kimia permukaan yang rendah, kandungan ion rendah, dan kandungan partikel kecil, serta cocok untuk lingkungan ruang bersih yang ketat. 5. Sarung tangan neoprenaMirip dengan kenyamanan karet alam, sarung tangan neoprene tahan terhadap cahaya, penuaan, kelenturan, asam dan alkali, ozon, pembakaran, panas dan minyak. 6. Sarung tangan karet butilKaret butil hanya digunakan sebagai bahan untuk sarung tangan tanpa lapisan berukuran sedang dan dapat digunakan untuk operasi di kotak sarung tangan, kotak anaerobik, inkubator, dan kotak operasi; memiliki daya tahan super terhadap asam fluorida, aqua regia, asam nitrat, asam kuat, alkali kuat, toluena, alkohol, dll., dan merupakan sarung tangan cairan sintetis karet khusus yang tahan. 7. Sarung tangan polivinil alkohol (PVA)Polivinil alkohol (PVA) dapat digunakan sebagai bahan untuk sarung tangan berlapis berukuran sedang, sehingga jenis sarung tangan ini dapat memberikan perlindungan tingkat tinggi dan ketahanan terhadap korosi terhadap berbagai bahan kimia organik, seperti hidrokarbon alifatik, aromatik, pelarut terklorinasi, fluorokarbon, dan sebagian besar keton (kecuali aseton), ester, dan eter. Situs web: www.elephchem.comWhatsapp: (+)86 13851435272Surel: admin@elephchem.com