News

Knowledge

Company News

Application Mind Map

Test Report

Technical Article

Industry News

Raw materials for traditional adhesives

Release time:

2025-04-01 17:11

Raw materials for traditional adhesives
Raw materials for traditional adhesives

In the long river of human civilization, adhesives—playing the crucial role of an essential bonding material—bear the heavy responsibility of joining objects together and transmitting forces. From ancient natural resins to modern synthetically produced polymers, the raw materials of adhesives have undergone a long and rich evolutionary process, and the types and properties of adhesives have continuously evolved as well. This article will delve deeply into the raw materials of traditional adhesives, revealing the richness of these traditional adhesive ingredients and the scientific rigor behind their preparation processes, thereby unveiling the mysteries of these remarkable bonding materials.

I. Extraction and Utilization of Natural Materials

In traditional adhesives, natural materials occupy an important position. Most of these materials are derived from plants and animals and possess the characteristics of natural macromolecular compounds, making them ideal raw materials for adhesive production.

Plant-based adhesives such as starch, cellulose, tannins, gum arabic, and sodium alginate are widely found in nature. Starch is obtained by grinding grains, while cellulose is extracted from plants like wood and cotton. Tannins are primarily derived from plants such as oak and sumac, whereas gum arabic and sodium alginate come from the acacia tree and seaweed, respectively. The extraction processes for these plant-based adhesives are generally simple and straightforward, involving steps such as boiling in water, soaking, filtration, and drying to yield the desired raw materials.

Animal-based adhesives are equally diverse and abundant, including bone glue, fish glue, blood protein glue, casein, and shellac. These adhesives are primarily derived from natural macromolecular compounds found in animals—such as bones, swim bladders, blood, and insect secretions. The extraction process varies depending on the raw material, but most procedures involve steps like crushing, boiling, filtering, concentrating, and drying. For example, to extract bone glue, animal bones are first crushed and then boiled; the resulting mixture is filtered and concentrated to yield a bone-glue solution, which is subsequently dried into a powdered form.

II. Manufacturing and Development of Synthetic Materials

With the advancement of technology, synthetically produced materials have gradually become an important component of traditional adhesives. These materials are manufactured through chemical synthesis methods and boast excellent performance as well as a wide range of applications.

Synthetic resins are among the finest examples of artificially synthesized materials, including epoxy resins, phenolic resins, unsaturated polyesters, and polyurethanes. The manufacturing processes of these resins involve complex chemical reactions such as polymerization, condensation, and crosslinking. Take epoxy resin as an example: its production process requires the polymerization of bisphenol A and epichlorohydrin in the presence of a catalyst to obtain an epoxy resin prepolymer. This prepolymer then undergoes subsequent processing steps—including neutralization, washing, drying, and grinding—to finally yield the finished epoxy resin product.

Rubber and elastomers are also important members of synthetically produced materials, including chloroprene rubber, butyl rubber, and ethylene-propylene rubber. The manufacturing processes for these rubbers are equally complex, requiring precise control over the proportions of raw materials and reaction conditions. Take chloroprene rubber as an example: its production involves a copolymerization reaction between butadiene and chlorine gas in the presence of a catalyst, yielding a chloroprene rubber prepolymer. This prepolymer then undergoes subsequent processing steps—such as washing, drying, and calendering—to ultimately produce the finished chloroprene rubber product.

III. Additive Addition and Performance Optimization

In addition to the main raw materials, traditional adhesives may also contain various additives to meet specific physicochemical requirements. These additives include curing agents, toughening agents, diluents, and fillers, among others.

The curing agent is a key component that accelerates the solidification of adhesives through chemical reactions. Its manufacturing process varies depending on the specific type, but most often involves chemical synthesis or extraction. Toughening agents are used to enhance the toughness of adhesives and improve their impact resistance. Diluents, on the other hand, are employed to reduce the viscosity of adhesives, thereby improving their wettability and flowability. Fillers are added to increase the consistency and strength of adhesives while also lowering costs. The addition and optimization of these additives have enabled traditional adhesives to expand into a wider range of applications and deliver superior performance.

IV. Summary

The raw materials for traditional adhesives fall into two major categories: natural materials and synthetically produced materials. Each category has its own unique extraction and manufacturing processes. Natural materials, with their wide availability and environmentally friendly, renewable characteristics, occupy an important position in adhesives; while synthetically produced materials, owing to their superior performance and broad range of applications, have become an indispensable part of traditional adhesives. Meanwhile, by adding and optimizing various additives, the performance of traditional adhesives has been further enhanced, meeting the needs of an ever-expanding array of fields.

Disclaimer: The above content is sourced from the internet and is for reference only. If any infringement occurs, please contact us, and we will remove it promptly. 

Share to:

Previous page

An Analysis of Traditional Adhesive Processing Technologies

Types of Traditional Adhesives (Part 2)

Next page

Related News

Types of Traditional Adhesives (Part 2)

With the rapid development of modern industry, adhesives have become an indispensable part of industrial materials, and their varieties and performance are constantly advancing and improving. Synthetic adhesives, as a product of modern industrial civilization, have gradually become the dominant force in the adhesive market thanks to their diverse raw materials, outstanding performance, and wide range of applications.

Types of Traditional Adhesives (Part 1)

As a magical bond that connects everything, adhesives play an indispensable role. From ancient crafted artifacts to cutting-edge modern technologies, adhesives are ubiquitous in our daily lives, with a wide variety of types and diverse performance characteristics. Among them, natural adhesives—among the earliest adhesive types discovered and utilized by humans—continue to play an irreplaceable role in numerous fields today, thanks to their unique advantages derived from nature.

Characteristics of traditional adhesives

As an important class of bonding materials, adhesives play an indispensable role in both traditional industries and modern technologies. Not only do they possess unique physical and chemical properties that enable them to meet a wide range of complex bonding requirements, but they are also highly favored for their diverse application advantages. This article aims to explore the key characteristics and limitations of conventional adhesives, with the hope of providing valuable reference for professionals in related fields.