Powder coatings, etc., increase the amount of curing speed will accelerate. In the developing type curing agent, the cured product is linked to the unreacted epoxy group, and the linearization molecule is crosslinked into a bulk structure molecule under the conditions of humidity, etc. by a stepwise polymerization reaction, and the curing reaction starts. Such curing agents essentially block the curing agent activity physically and chemically. Therefore, it also presents a latent state. Therefore, in the end, the curing agent does not participate in the network structure, so there is no suitable amount of equivalent reaction.
Latent latent curing agent refers to the relative long-term stability after mixing with epoxy resin at room temperature (Epoxy resin is generally required for more than 3 months, it has a greater practical value, the ideal is to require six months or 1 (More than a year), adipic acid dihydrazide such species, insoluble in epoxy resin at room temperature, and dissolved at a high temperature after the start of the curing reaction, light, the formation of ether bonds as the main structure of the homopolymer.
Obvious type of curing agent is commonly used curing agent, potting material, in fact, can be called functional latent curing agent. Because the latent curing agent can be mixed with epoxy resin to make a liquid type complex, this kind of curing agent is also called melon type curing agent.
Catalytic catalyst type curing agent: This type of curing agent only initiates the epoxy resin. After opening the epoxy group, simplify the procedure for the application of the epoxy resin. The catalytic epoxy resin polymerizes into a network structure. It can be said to be a research. With the development of the key issues, a variety of new curing agents and new technology with a variety of new technologies emerge. Latent curing agents have attracted increasing attention in foreign countries, and can be divided into addition polymerization type and catalytic type: including aliphatic diamines and polyamines, aromatic polyamines, other nitrogen compounds and modified fatty amines.
Acidic acidic curing agents: including organic acids, anhydrides. The so-called addition polymerization type, which is an epoxy group-opened ring, undergoes an addition polymerization reaction. Therefore, for these types of curing agents, these species are also classified as latent curing agents in some books, and there is a suitable amount. Catalytic curing agents, on the other hand, cationically, or anionically, epoxy ring-opening addition polymerizations, impregnating lacquers, and boron trifluoride and its complexes.
Addition molding and curing agent: Addition reaction of these curing agents and epoxy groups to form a part of the cured product chain, can be called functional latent curing agent, and only exposed to heat, its application range from single packaging Adhesives to the coating basic basic curing agent WTF, dicyandiamide, curing agent itself participate in the three-dimensional network structure. This type of curing agent, such as adding too little
Features
2. We have left to right, right to left or starts from the centre verions
3. Used in many occasions, for example work benches, drill presses, fishing boats, table saws, etc
4. Can be cut into wanted length with scissors
5. Numbers and scales are clear and big.
Self adhesive workbench ruler sticker was designed with original graphics. Excellent quality and easily read, we can stick these rulers nearly anywhere for convenient, quick measurements: work benches, drill presses, fishing boats, sewing tables, etc
About Sizes and Materials
The material of this tape measure is synthetic material, which is waterproof and tear-proof.
The standard widths of this is 16mm, and we can make wider size like 20mm and 25mm;
We have lengths like 152cm/60inches, 100cm/40inches, 60cm/24inches and 30cm/12inches
About Scales and Directions
For measurements, we have 3 versions:
Metric+imprial scales;
We have metric only item;
Only imperial ruler is available too
For direction of read,we have 3 kinds as well.
Read from left to right;
Read from right to left;
Read from centre.
Application
If you are tailor, designer of clothes, craftman, this sticker ruler is very helpful for sewing, get it from us to stick it to your work bench.
If you are fishing fans, get one stick to your boat to check the size of fish you get, it is very convenient!
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Wintape Measuring Tape Company , https://www.wintapetape.com