Suspension polymerization (EPS)

Suspension polymerization (EPS) Optimization

EPS is a colorless and transparent plastic material. When the product falls to the ground or is knocked, it makes a crisp sound like metal. It has good gloss and transparency, similar to glass, but is brittle and easy to break. Common products: building thermal insulation materials, stationery, cups, food containers, home appliance housings, electrical accessories, etc.

The suspension polymerization of PS is a homogeneous suspension polymerization. The polymerization reaction conditions are relatively simple and the products are mostly transparent beads.

Cellulose Ether for Suspension polymerization (EPS)

Hydroxypropyl methyl cellulose (HPMC)

HPMC has excellent dispersing properties and can form a stable suspension, prevent particle aggregation and improve product performance. Recommend grade: Celopro®MK100, Celopro®MF50, Celopro®ME50, Celopro®ME15

Celopro® cellulose ether has high mechanical strength, flexibility, heat resistance and cold resistance, and has good compatibility with various resins and plasticizers.

Celopro® Cellulose Ether Advantages

1. Dispersibility

Celopro® cellulose ether increases the viscosity of the dispersion medium, thereby hindering the microspheres from getting closerand reducing their surface tension. At the same time, a protective film is formed on the microspheres to prevent adhesion, thereby our customer can obtainthe uniform polystyrene particles.

2. Stability

Celopro® cellulose ether reduces the surface tension of water, making the suspension system more stable and more conducive to controlling the size and morphology of EPS particles.

3. Improve product performance

Using Celopro® cellulose ether as a dispersant to make EPS particles usually have better pore structure and mechanical properties, which helps to improve the final application performance of EPS, such as thermal insulation and lightness.

Recommended Products

Typical Properties of Celopro® Cellulose Ethers

Product MeO (%) HPO (%) Viscosity (mPas) NaCl (%) Fe (ppm) H2O (%)
Celopro MK100 22-23 6-7 80 – 120 <2.0 <150 <5.0
Celopro MF50 28-29 6-7 40 – 60 <1.5 <150 <5.0
Celopro ME50 29-30 11-12 45 – 55 <1.5 <150 <5.0

Solution Properties of Celopro® Cellulose Ethers

Product Gel Temp. Extractable Cellulose Ethera (%) IFTb (dyne/cm) Viscosityc (mPas) Application
Celopro MK100 72 0.42 15.6 100 Rigid PVC, low porosity, high bulk density
Celopro MF50 67 1.58 11.2 50 General purpose suspending agent
Celopro ME50 60 2.46 8.6 50 Flexible PVC, high porosity, low VCM residuals
Celopro ME15 62 3.2 7.5 15 Flexible PVC, high porosity, low VCM residuals

 

Our Service

“Celotech-Cellulose Ether Expert Services”
We provide comprehensive cellulose ether solutions. From raw material selection to product application, our team of experts will work closely with you to ensure that your project needs are met. Our products are widely used in many industries such as building materials, oil drilling, daily chemicals, food, and pharmaceuticals. In addition to cellulose ethers, we also provide a full range of chemical additives for the building materials field to help you find the most suitable products.

“Leads Technological Innovation”
Celotech has advanced laboratory facilities and professional technicians, dedicated to the technological innovation and research and development of cellulose ethers.
Our laboratory technical support team will provide you with technical consultation, formula optimization and customized solutions to help you solve technical problems and improve product quality.

“Why Choosing Celotech Free Samples?”

Quality assurance: We promise that the samples you receive are of the same quality as the bulk products.
Wide application: Whether you are an expert in the construction industry or a beginner, our cellulose ethers always meet your needs.
Professional recommendation: You only need to tell us the type you are currently using or other application directions, and we can match the most suitable cellulose ether products for you.

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Frequently Asked Questions

Our Celotech Application Lab usually prepares free samples weighing less than 1.0kg, but the freight delivery fees from my lab to consignee should be on consignee’s account.

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