R1618

R1618 belongs to the conductive hyperdispersant category; its official full name is "Conductive carbon black hyperdispersant for plastics R1618"; main component: polyolefin ether; mechanism field: "chemical dispersion + conductive pathway construction". The technical data pages and catalog lines of the four versions of the material corroborate one another verbatim: "R1618 hyperdispersant is a hyperdispersant with a conductive function developed specifically for conductive carbon black in plastics." (Data source: product handbook / official product data)

Overview paragraph, verbatim: "R1618 hyperdispersant is a dispersant developed by our company and specially used for conductive carbon black ultrafine powders. It is a polymer aqueous solution produced under high-temperature and high-pressure conditions using a precise ratio. It has an excellent molecular weight and a fairly narrow molecular weight distribution, and provides excellent dispersion and conductive effects for conductive carbon black powders and conductive carbon black masterbatches." (Data source: product handbook / official product data)

The advantages paragraph states the field problems and functional positioning verbatim: "R1618 hyperdispersant is a water-soluble high-efficiency dispersant with a low dosage, and it provides excellent dispersion and conductive effects for conductive carbon black and conductive carbon black masterbatches. For example, when producing ultrafine powders such as conductive carbon black and conductive carbon black masterbatches, the finer the powder, the more prone it is to agglomeration, which seriously affects product quality. The dispersants commonly used by many factories generally have only a dispersion effect, whereas R1618 hyperdispersant offers hyperdispersion, lubrication and wetting, and encapsulation, and in particular also has a conductive function." (Data source: product handbook / official product data)

This product is part of the hyperdispersant series, and the official list of representative models in the series includes this model; the company introduction list sentence in the product handbook also records "plastic conductive carbon black hyperdispersant: R1618". All effect statements given in the material are qualitative: no resistivity values, no quantified dispersion efficiency values, and no comparative data on conductive performance; this page makes no extrapolations and gives no commitments. (Data source: product handbook / official product data)

• Water-soluble system — supplied in the form of a polymer aqueous solution, readily soluble in water, with a low dosage.
• Four effects in one — "offers hyperdispersion, lubrication and wetting, and encapsulation, and in particular also has a conductive function"; the material also records that it has a relatively low resistivity and can enable rubber or plastics to achieve a certain degree of electrical conductivity.
• Molecular weight characteristics — "excellent molecular weight and a fairly narrow molecular weight distribution".
• Targeted at the ultrafine powder dilemma — "the finer the powder, the more prone it is to agglomeration, which seriously affects product quality"; the dispersion targets of this product are conductive carbon black ultrafine powders and conductive carbon black masterbatches.
• Target systems (two lists in the handbook) — Antistatic products: conductive foamed tubes, charging rollers, static eliminators, antistatic conveyor belts, antistatic rubber sheets, antistatic boxes and hollow boards, antistatic tubes, medical rubber products, carpets, copier rollers, printing press rollers, electronic component packaging films, explosion-proof cables, antistatic table mats, antistatic shoe soles, etc.; Conductive products: cable shielding compounds, planar heating elements, conductive films, elastic electrodes, printed circuits, conductive coatings, conductive inks, conductive fibers, conductive leather products and adhesives, mining conveyor belts, mining plastic pipes, mining air ducts, etc.
• Note on records — this product has no pairing, substitution, or upgrade relationship with any model (the model selection sentence in the handbook is a parallel recommendation); its dosage and composition are independent of and not interchangeable with models of the same type for other directions.

Composition and preparation: the main component is polyolefin ether; the material records that it is "a polymer aqueous solution produced under high-temperature and high-pressure conditions using a precise ratio", with an excellent molecular weight and a fairly narrow molecular weight distribution — dispersion stability derives from this. (Data source: product handbook / official product data)

The dispersion stage acts on conductive carbon black ultrafine powders: the finer the powder, the more prone it is to agglomeration, and agglomeration directly affects product quality; ordinary dispersants have only a dispersion effect, whereas in addition to hyperdispersion this product also provides lubrication and wetting and encapsulation, and in particular also has a conductive function. (Data source: product handbook / official product data)

How the conductive function is read (as expressed on the page): dispersant dosage increases → conductive carbon black is dispersed particle by particle → conductive pathways light up one by one and form a network; the page illustrates this process for visitors, and the page itself notes "not measured resistance data" — this page makes no quantitative statements based on it and cites no resistance values. The only writable statement in the material regarding conductive performance is "has a relatively low resistivity and can enable rubber or plastics to achieve a certain degree of electrical conductivity". (Data source: product handbook / official product data)

1. Water-soluble dispersion — polymer aqueous solution enters the systemAdded in the form of a polymer aqueous solution; readily soluble in water and with a low dosage, it first distributes evenly in the medium.
2. De-agglomeration — dispersion of ultrafine conductive carbon blackTargeting the ultrafine powder dilemma in which "the finer, the more agglomerated": hyperdispersion + lubrication and wetting + encapsulation de-agglomerate the conductive carbon black and disperse it stably.
3. Network formation — construction of conductive pathwaysAfter the carbon black particles are evenly dispersed and the distance between them is reduced, continuous conductive pathways gradually form; this enables rubber or plastics to achieve a certain degree of electrical conductivity. This process is a qualitative reading, and the schematic diagram on the page is not measured resistance data.
4. Into application — antistatic / conductive articlesPer the two lists in the handbook: antistatic product category and conductive product category; it provides excellent dispersion and conductive effects for conductive or antistatic articles and raw materials such as cable compounds.

The six physicochemical indicators recorded in the product handbook and official product data are as follows (the wording of both sources is transcribed item by item, without cross-modification). The values in the table are as recorded in the source materials; before bulk use, it is recommended to conduct small-scale trials with your own formulation for verification.

Reading notes: (1) The pH value item is recorded as "6.8-7mgKOH/g" in both the handbook and the official product data (the pH row carries the mgKOH/g unit); this page transcribes it as-is without substituting a correction, and it has been listed as pending verification; (2) Differences in wording between layers for values such as density, solid content, and viscosity (e.g. 12-12.7% ↔ 12.0%–12.7%) are typographic normalization, and the values themselves are consistent; (3) The test methods / conditions / standard numbers for the six indicators are not listed in the source materials. (Data source: product handbook / official product data)

The dosage of this grade is a "two coexisting" case: within the same page of the handbook, two dosage lines coexist, each with its denominator explicitly stated, and with the same numerical range (0.5–2%) — one relative to the total carbon black weight, the other relative to the final plastic product. Both lines are presented side by side; this page does not choose between them and does not convert across lines.

The reason both lines coexist is that the denominators differ: the amount relative to the carbon black feed and the amount relative to the final product are two separate baselines. When using, first confirm the formulation basis before selecting a value — calculate the addition amount based on total carbon black weight, or based on the total amount of the final plastic product. The source materials do not provide applicability notes for the two lines, nor do they state a thickness-dosage direction clause (neither the grade's handbook pages nor the page contain any mention of "thinner" or "thickness").

Pending verification: (1) The two lines coexist (0.5-2% based on total carbon black weight / 0.5%—2% for the final plastic product) — it is recommended that the source material side add an applicability note for the two lines or a unified basis note; this page does not draft one on its behalf. (2) The source materials do not list the feeding order / mixing method / addition point; the clues are the overview sentence "polymer aqueous solution" and the physicochemical item "readily soluble in water". (3) The source materials do not provide a thickness-dosage direction clause (explicitly stated as "none"). (4) All of the above are values recorded in the source materials; for actual production, please conduct small-scale trials with your own carbon black and system for confirmation.

The product handbook [Application Scope] provides two lists (antistatic product category, conductive product category), transcribed item by item as follows; the application tags in the official field are verified tags such as conductive film.

Antistatic product category

Conductive foam tubes, charging rollers, static eliminators, antistatic conveyor belts, antistatic rubber sheets, antistatic boxes and hollow boards, antistatic tubes, medical rubber products, carpets, copier rollers, printing press rollers, electronic component packaging films, explosion-proof cables; also antistatic bench mats, antistatic shoe soles, etc.

Conductive product category

Cable shielding compounds, planar heating elements, conductive films, elastic electrodes, printed circuits, conductive coatings, conductive inks, conductive fibers, conductive leather products and adhesives; mining conveyor belts, mining plastic pipes, mining ventilation ducts, etc.

Conductive carbon black masterbatch

One of the main subjects of the overview paragraph and the advantages paragraph: it has good dispersing and conductive effects on conductive carbon black powder and conductive carbon black masterbatch.

Subject description (handbook main text sentence)

"It has a relatively low resistivity, can give rubber or plastic a certain conductive performance, and provides good dispersing and conductive effects on raw materials for various conductive or antistatic products, such as antistatic or conductive rubber, plastic products, cable compounds, etc."

Usage method clues

The source materials do not list the feeding order / mixing method; the clues are "polymer aqueous solution" and "readily soluble in water" (physicochemical items).

Boundary notes

This product is independent from same-category or similar-numbered grades in the meltblown softening direction, water-based direction, carbon nanotube direction, etc. — their category fields, target systems, and dosage systems all differ, there is no substitution or pairing relationship, and values are not interchangeable.

Field issues & application examples (as recorded in the source material)

The differences between R1618 and similar models in each direction all lie in the category field, mechanism field, target system, main components, and dosage system; identification is based on the official full name and category field, not on numbering or appearance analogy. Comparison as follows:

Reading notes: (1) Among the three models the numbering or category may overlap (R1608S and R1618 share the "16 / 8" digit positions in their numbers; D3-A and R1618 both belong to the conductive hyperdispersant category), but their target, components, appearance, and dosage systems are each independent, and the values are not interchangeable; (2) The same category also has models in the carbon nanotube direction, whose dosage systems are independent and are not listed in this table; (3) The selection sentence (in the handbook) recommends this model alongside R1800-SK, R1800-SH, R900A, etc., which is a parallel listing and is not written as a substitution or derivation relationship. (Data source: product handbook / official product data)

The following points come item by item from the recorded materials; items not listed in the materials are not drafted on our behalf.

The data on this page comes from two types of materials, and each item can be traced back:

• Product handbook: the full section of this model's technical data page (overview / advantages / main components / six physicochemical property items / two application scope lists / addition level / packaging / storage conditions); the table of contents line and the company introduction list sentence; the hyperdispersant by category section; the masterbatch selection section (parallel recommendation sentence).
• Official product data: all fields of this model (name, category, positioning, description, mechanism, application, physicochemical parameters, main components, recommended dosage); series entries (representative model list).

Not covered by the source material (not written on this page — to be added later)

• Two dosage lines in parallel: it is suggested that the materials be supplemented with an applicability note for the two lines (or a unified basis note).
• The pH value unit is written as "6.8-7mgKOH/g" (the pH row carries the mgKOH/g unit): recorded as-is without change on our behalf; it is suggested that the materials be reviewed.
• The test methods / conditions / standard numbers for the six indicators are not listed; there are no quantified performance values.
• Shelf life / transportation / usage method (feeding order, mixing method) / processing temperature window / safety notes / disclaimer — not listed, not drafted on our behalf.