Cradle to Consumer
Identity ID
9c979a22-e2aa-48a0-b291-b8fd1fca7ec5
Materials
Associated ID
e07c9330-f150-448d-a627-854280e5ddf2
Included activities starts
Included activities ends
Description
This dataset is a market dataset, representing the consumption market of the region; the dataset includes the transport of the product from the gate to the consumer end, and the transport service is calculated according to the transport situation of this product in this region. MBS resin is mainly used as a transparent plastic product modifier in processing scenarios with requirements for transparency and impact resistance, and is also used in fields such as general-purpose PVC modification, engineering plastics modification, coatings and adhesives modification, and the preparation of transparent impact-modified masterbatches. MBS resin is modelled as a pure substance; when modelling this substance the user needs to add a solvent of their choice in the model; the dataset contains the main raw and auxiliary materials, energy, waste and atmospheric emissions of the production process, in which the preliminary treatment of wastewater in the auxiliary units and the waste gas treatment process are included within the dataset boundary, and infrastructure such as the manufacture of production equipment and the construction of plant buildings is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activities of this product include styrene-butadiene latex (core layer) synthesis, core-shell graft polymerisation (shell layer construction), coagulation, dehydration and washing, and low-temperature drying.
Activity Description
The production activities of this product include styrene-butadiene latex (core layer) synthesis, core-shell graft polymerization (shell layer construction), coagulation, dehydration washing, low-temperature drying and other processes.
Process Description
MBS resin (methyl methacrylate, butadiene, styrene terpolymer) is a core-shell structure polymer material produced by emulsion graft copolymerization of methyl methacrylate (MMA), butadiene (BD), and styrene (St). It appears as a white or slightly yellow powder and has a density of about 1.05-1.08g/cm3. The glass transition temperature (Tg) is adjusted with the proportion of the components and has dual characteristics of rigidity and toughness. It is insoluble in water, easily soluble in toluene, xylene, ethyl acetate and other aromatic hydrocarbons and ester organic solvents. It has excellent compatibility with polymer materials such as polyvinyl chloride (PVC), stable chemical properties, excellent weather resistance and aging resistance, and has good processing fluidity and optical transparency. Industrially, it is mainly used for the processing of PVC transparent products (as a core impact modifier, without affecting the transparent appearance), the modification of general PVC products, and the modification of engineering plastics. It is also used for the modification of coatings and adhesives, and the preparation of transparent impact modified masterbatch. It is especially suitable for polymer material processing scenarios that have dual requirements for transparency and impact resistance.
Time period
2018
2026
Geography
China,Hunan
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Emulsion graft polymerization is an advanced mainstream technology for MBS resin production. This data set represents this mainstream technology: first, butadiene and styrene are emulsified in water and emulsifier, polymerized under the action of initiator to produce styrene-butadiene latex (SBR latex), then styrene and methyl methacrylate are added for emulsion graft polymerization to obtain MBS resin graft latex (MBS resin latex), and finally the MBS resin finished product is obtained after coagulation, dehydration and drying, including waste treatment.
1. Add butadiene, styrene, initiator and various prepared additives to the polymerization reactor in a certain amount and order, stir at a certain temperature to perform emulsion polymerization, stop the reaction when the reaction reaches a certain conversion rate, and remove unreacted monomers to obtain styrene-butadiene latex. There are special requirements for the styrene-butadiene latex used to prepare MBS resin. The first is that the butadiene content in styrene-butadiene latex should be 70%-80%. This is to ensure that the MBS resin produced has certain impact resistance, cold resistance and good processability when modifying PVC.
2. After the obtained styrene-butadiene latex is diluted with water, emulsifier and initiator are added, and then graft polymerization is performed with styrene and methyl methacrylate.
3. The dehydrated and washed MBS resin is sent to the drying section (water content is about 35%). Because MBS resin contains unsaturated double bonds, it is prone to aging and discoloration at high temperatures. Therefore, it is required that the temperature of the drying process should not be too high (the oven drying temperature should be less than 60°C) and the time should be as short as possible.