How to deal with nylon and glass fiber scorched marks?

1. The compatibility between glass fiber and nylon is poor, and the nylon has low fluidity in the modification process and does not completely infiltrate the glass fiber.

2. In the injection molding process, due to the frictional shear force of the screw, nozzle, runner and gate in the flow process of the plastic melt, it will cause the difference of local viscosity, and at the same time will destroy the interface layer on the surface of the glass fiber, the smaller the viscosity of the melt, the more serious the damage to the interface layer, and the smaller the adhesion between the glass fiber and the resin, when the adhesion force is small to a certain extent, the glass fiber will get rid of the constraints of the resin matrix, and gradually accumulate to the surface and be exposed.

Qingdao Zhebang polymer science and technology introduction to the formation of floating fiber is also related to the difference in the proportion of glass fiber and the base material, in the process of plastic melt flow, due to the difference in the fluidity of glass fiber and resin, and the mass density is also different, so that the two have a tendency to separate, glass fiber floats to the surface, resin sinks to the inside, so the phenomenon of glass fiber exposure is formed.

Fountain effect. When the nylon melt is injected into the mold, it will form a "fountain" effect, that is, the glass fiber will flow from the inside to the outside, and contact with the surface of the cavity.

Therefore, the formation of the "floating fiber" phenomenon is not only related to the composition and characteristics of plastic materials, but also related to the molding process, which has great complexity and uncertainty.

How to use nylon plus glass fiber pretreatment agent:

1. Clean the oil and dust on the surface of the workpiece (wipe it with white oil and alcohol).

2. Spray nylon pretreatment agent (film thickness 3-5 microns, cross-shaped spraying is OK) 3. Bake at 65 degrees for 5-10 minutes after spraying the treatment agent, and dry for 15 minutes without conditions for baking.

4. After the treatment agent is completely dry, you can spray the target paint.

Nylon is a material with excellent comprehensive properties, but it also has obvious advantages and disadvantages, such as physical properties that are sensitive to temperature, large impact on water absorption, dimensional stability, and poor low-temperature toughness. Modification by chemical and physical methods can greatly improve its performance. It is a common method to greatly improve water absorption and dimensional stability by adding glass fiber materials, and can improve the wall wall and toughness of resin.

In addition to some other engineering material applications, the application of nylon plus glass fiber material is also used in automobiles, toys, small household appliances, small commodities and other fields, which generally need to be coated and decorated with nylon plus glass fiber material. Therefore, in many surface treatment processes, the application of nylon and glass fiber surface painting is becoming more and more extensive.

If you have nylon and glass fiber, this is a useful one, just like the fire that burned coal for him, and this can eliminate all the glue marks for him.

How to deal with nylon and glass fiber with adhesive marks? There's no good way to do this. There are glue marks, and he's a very hard thing, unless he's handed it over.

If there is an exchange, it can be heated and then smoothed.

If there are glue marks, you can't use it anymore, you have to do it again.

This trace of nylon fibers needs to be dealt with.

There are glue marks on the glass fiber. Is there just a little bit of glue marks? Li Jiaheng is a performance of unqualified quality. If there is such a place, he will affect the quality of production.

Now nylon and its glass fiber are still exchanged, if we want to deal with it, we should still solve it in a better way.

It depends on the cause, if it is a burn, there is nothing to be done.

If there is a glue mark on the nylon, it can be processed with another synthetic agent, and then the glue mark can be removed.

The allocation of money is still treated with glue marks, and we can still see the corresponding policies and more ways.

How to deal with nylon plus glass fiber anxiety? This should be looked up on the Internet to find out about this aspect of life.

There are many kinds of nylon material series, and the nylon plus glass fiber substrate obtained after glass fiber modification is a common material in the field of painting, but because nylon is a substrate with high crystallinity, low surface energy, poor adhesion, and the structure of the substrate becomes more complex after modification, the paint often falls off when spraying paint on its surface.

Nylon plus 30% glass fiber substrate spray paint adhesion problem, first confirm the substrate, and then see whether the pre-care cleaning work on the surface of the substrate is in place, oil and dust and other substances will cause a weak interface layer, the formation of pseudoadhesion phenomenon. If it is confirmed that there is no problem or the phenomenon of paint peeling, it is caused by insufficient adhesion between nylon and paint, and the adhesion properties and wettability of nylon plus 30% glass fiber material can be improved by priming Shizukawa nylon treatment agent, and then forming chemical bonds with the paint to improve adhesion, and the adhesion test of 100 grids reaches 5b.

Nylon plus corrugated fiber depends on the content of corrugated fiber, the greater the corrugated fiber content, the better the strength of the workpiece, but it will affect the adhesion when painting, I have tested Heshan Keding 14896A in 30% corrugated fiber content are adhesed, I have tested the market better hydroxyl resin.

Nylon plus 30% glass fiber This nylon material has poor surface polarity, and the hardness of the material is extremely high, nylon or glass fiber nylon belongs to the substrate with high crystalline and low surface energy, and the activity of polar groups is not strong, so it is necessary to solve the problem of paint loss by activating the surface of the substrate and improving the adhesion and bonding strength between it and paint.

The main solution to improve the surface adhesion environment of nylon or glass fiber nylon is to spray the nylon fiberization treatment agent on the substrate after cleaning and cleaning by priming, and the cleaning must be done at this time, because oil stains and other weak interface layers will be formed. Then the topcoat or primer is sprayed directly, and the middle layer of the nylon surface treatment agent promotes the adhesion of each other, improves the substrate, strengthens the chemical bond with the paint, and forms a coating that is strong for the paint.

This problem is not clear enough, there is no way, you can give me a message specifically, and I will help you solve the related problems.

Who is attached to whom? PA and GF or the attachment of this product and other things?

There are many reasons for the exposure of glass fiber, which is generally caused by the fact that the quality of glass fiber is not very good, which can be improved by adding some lubricant, or trying to change a glass fiber.

If the temperature of the leaky fiber is not enough during injection molding or the cooling of the product after molding is not handled well, try annealing after injection molding.

I make more than 50% of the fiber, and the fiber will not be exposed, so you can replace the bottom material and take a look.

That is, the material is not done well, and the temperature of the mold will be better if you hit the product.

You can try my ingredients.

Appropriate glass beads can be added to improve.

I would like to recommend you to the frozen trimming machine, but according to my experience, the product material you said is not the same as the rubber, it may belong to similar plastic steel materials, high strength, but the low temperature of the liquid nitrogen of the frozen trimming machine will make you crack, and the cost of liquid nitrogen and consumables of the frozen trimming machine is not small, so you can go to Alibaba to see the Mi Ray ultrasonic deburring, I am so good in their ** products that there are several machines for deburring injection molded parts, I hope it will help you.

Nylon + glass fiber or other materials Glass fiber can be appropriately added to the material to solve the problem of fiber leakage.

You can post ** out, and I'll help you solve it. And what products do you make? What brand and type of material are used? Tell me more about it, and I can answer them for you one by one! --Sanyan Plastics.

If the adhesion of nylon and glass fiber is not good, it can be solved by Shizukawa nylon treatment agent, sprayed on the surface of the substrate, and then sprayed with paint to improve the adhesion between layers and solve the problems of paint loss.

Nylon material itself has many characteristics, its material has a smooth surface, good toughness, high fatigue resistance, and can also resist corrosion. However, now the diversification of products on the market, nylon material to meet the various needs of the finished product, it is not enough to rely on a material alone, the technical department R & D personnel through the test knows, in the injection molding nylon material process to add a glass fiber material into it, so that the nylon + glass fiber material injection molding workpiece is more perfect. However, due to the low polarity of the surface of the nylon material and the glass fiber material, coupled with the crystal structure, it is difficult to adhere to the paint and coating.

If this phenomenon occurs, it is necessary to use nylon fiberization treatment agent to base on nylon material + glass fiber material to continue the next step of the production process, nylon fiberization treatment agent can effectively increase surface adhesion. Jiongsheng nylon plus glass fiber treatment agent can effectively improve the surface hydroxyl group of modified nylon, improve the adhesion performance of paints and coatings, and its adhesion can reach 5b effect in the face of 100 grid tests, high and low temperature tests, boiling tests, etc.

Features of nylon plus glass fiber treatment agent:

1.It has excellent flexibility, many nylon glass fiber workpieces need to be bent test, ordinary adhesives will burst once bent, even after plasticizing treatment, it will crack after a long time, 7805 has excellent flexibility and long-term effect.

2.Resistance to temperature denaturation, especially low temperatures, is also a disadvantage of ordinary nylon fiberization treatments. It has excellent resistance to low temperatures.

The principle of use of Shizukawa nylon fiberization treatment agent: after brushing on the nylon material, a dense film is formed, which can change the polarity of the surface of the material, and improve the adhesion of the nylon fiberization treatment agent to the material by increasing the intermolecular force. The adhesion of the topcoat promotes the formation of bidirectional hydroxyl bonds in the film, which links the nylon fiberization treatment agent to the resin molecules, thereby improving adhesion.

The effect of using nylon and glass fiber treatment water will be better.

First look at how much glass fiber is added, and then choose the appropriate bottom water to spray. Thank you!

Hit a layer of bottom water on the nylon material first, and it's OK!

With nylon water! A lot of searches on the Internet.

Actually, it's not the reason for the material! It's that the injection speed is too fast, slow down and see, there is also pressure, pressure holding, and the mold temperature must be high!

It is not enough to use reinforced nylon particles directly.

Try using a quick injection, taking care that the flow is not too large. The material opening can also be enlarged. The mold temperature must be high. The last step is to shift the inlet.

The back pressure is increased, mainly because the pressure speed is slower, a feed is beaten, and then the pressure is accelerated

Nylon is a crystalline plastic, and the nylon molecular chains and glass fibers are oriented during the molding process, resulting in warping and deformation.

When designing the mold, it is necessary to confirm the direction of deformation through CAE and molding experience, and design the size and position of the gate and even the shape of the mold for pre-denaturation.

Now that the mold has been done, the only way to analyze the direction and degree of its deformation is to try to change the molding conditions (reduce the rate of injection, increase or decrease the mold temperature and cooling time, make the mold temperature difference, etc.), and then you can correct the size and position of the gate.

Nylon fiber-reinforced materials are more prone to warping and deformation during injection molding, which is mainly caused by the orientation stress of glass fibers. Solution: First of all, it can be solved by adjusting the process, if not, it is necessary to consider replacing the raw materials.

That's because the materials you use haven't been modified well.

This is only a matter of processing technology and mold.

Processing technology, injection pressure, holding time and so on.

The mold is too professional and not very understood.

When you buy a screw, you should explain it to the screw manufacturer and ask them to have a chrome finish on the surface. You can also ask PA66 manufacturers to try to do a good job in fluidity and plasticity when granulating, and add less filler, which is also helpful for screws. We are the manufacturer of PA66 modified materials.

Spraying alloys can prolong the service life.

First of all, consider adjusting the machine, increasing the injection temperature, the sol time is long, the injection pressure is low, the injection rate is low, the mold temperature is low, etc. Secondly, the effect of whitishing can not be removed by adjusting the machine, and it can only be replaced with better glass fiber nylon materials, nylon fiber materials without material flowers, please ask if you don't understand.