How to improve the hardness of plastic products, do I need to add any hardening agent?

Hello everyone, I'm Henan Ruiqite. Recently, more customers have come to consult some plastic products that are deformed or soft after molding, how to solve this problem?

There is an additive on the plastic that specifically increases the hardness and rigidity, called the nucleating agent CH, which has a better effect of increasing the heat deflection temperature and improving the rigidity. In the past, some customers used PE materials instead of PP materials.

to reduce costs, but the hardness is not enough because the PE material is softer. Finally, it is also a problem solved by adding nucleating agent CH! How to use the nucleating agent? Let me share it with you step by step! (Let's take injection molded products as an example).

First of all, take the plastic plastic raw materials (raw materials added to the normal production, color masterbatch.

etc.), and nucleating agent CH, according to the nucleating agent added as a plastic raw material of two thousandths to prepare the test raw materials.

Add the well-proportioned plastic raw materials and nucleating agent CH to the blender and stir thoroughly. About 5-10 minutes. The better the dispersion, the better the final result.

The stirred test material is then added to the injection molding machine for production injection molding. Final molding. The nucleating agent also has the effect of increasing the crystallization speed, which can make the injection molded product crystallize quickly. Increasing the production rate also prevents shrinkage!

Finally, the products with nucleating agent added and those without nucleating agent were compared, and the hardness was obviously greatly improved. The hardness can be increased by 20 -40 .

To harden PP plastic, PP special hardening agent can be added.

Summary. The strength and hardness of the pro-friendly PVC foam wall panel can be achieved by adding a reinforcing agent during the production process. Enhancers are usually inorganic substances, such as calcium carbonic acid and silica, etc., which can be mixed with PVC blowing agents.

These reinforcing agents are able to strengthen the mixture and increase its hardness and strength. In addition, their proportions can also be changed to adjust the strength and hardness of the wall panels. In addition, the surface of PVC foam board can also be enhanced by coating material or fiber reinforcement material to enhance its strength and hardness.

What raw materials can be added to PVC products to increase the hardness of the product.

Excuse me, PVC foam wall panels increase strength and hardness.

Hello <> dear <>

I'm glad to answer for you. The addition of calcium raw materials, fillers, lead salt stabilizers, and acrylic esters to PVC products can increase the hardness of the product.

Are there any other additives?

The strength and hardness of the pro-friendly PVC foam wall panel can be achieved by adding a reinforcing agent during the production process. Enhancers are usually inorganic substances, such as calcium, carbonic acid and silica, which can be combined with PVC foaming agents to mix sock lead. These reinforcing agents reinforce the mixture and increase its hardness and strength.

In addition, their proportions can also be changed to adjust the strength and hardness of the wall panels. In addition, the surface of PVC foam board can also be enhanced by adding a good marking coating material or fiber reinforcement material to enhance its strength and hardness.

Can the addition of glass fibers increase strength?

Dear, yes. Kiss Hello Extended information: The addition of glass fiber can increase the strength and durability of PVC foam wall panels.

Glass fiber is a high-strength material, which can increase the tensile strength, flexural strength and compressive strength of PVC foam wall panels. In addition, fiberglass can also improve the impact resistance and abrasion resistance of PVC foam wallboard, making it more durable. Therefore, adding a certain amount of glass fiber in the production of PVC foam wall panels is a common method of reinforcing materials.

Hardness refers to the ability of a material to resist other hard objects pressing into its surface.

Commonly used methods to express hardness are: Shore hardness, Rockwell hardness, and Mohs hardness.

Addition to improve the hardness of plastics: a modification method for adding hard additives to plastics. Commonly used hardness fillers are rigid inorganic fillers and fibers.

Surface treatment improves the hardness of plastics: This modification method only improves the hardness of the outer surface of the plastic product, while the hardness of the inside of the product remains unchanged. This is relatively low-cost.

It is mainly used for objects, decorative materials, optical materials and daily necessities. This modification method mainly includes coating rubbing and surface treatment.

Blending and compounding to improve the hardness of plastics: common blending resins are: ABS, PMMA, PS and MF, etc., as long as the resin that needs to be modified is PE, PA, PTFE, PP, etc.

Commonly used composite resins are: PS, PMMA, ABS, MF, etc. Cross-linking improves the hardness of plastics:

After cross-linking, the hardness can be significantly improved.

1. Glass fiber.

2. Inorganic fillers.

3. Nucleating agent.

1. Add filler.

2. Glass fiber. 3. Add rigid nucleating agent to harden nucleating agent. WNA-108 stiffening nucleating agent can significantly improve the hardness, flexural modulus, heat deflection temperature, surface gloss and other properties of polypropylene (PP) and nylon (PA) plastic products.

Summary. Hello! (Soft PVC increases hardness, what additives are good.) The full name is polyvinylchlorid, the main ingredient is polyvinyl chloride, and other components are added to enhance its heat resistance, toughness, ductility, etc. The top layer of this surface ** is lacquer, the main component in the middle is polyvinyl chloride, and the bottom layer is the back-coated adhesive. PVC can be divided into soft PVC and hard PVC.

Soft PVC is generally used on floors, ceilings and leather surfaces, but its use is limited because soft PVC contains softener (which is also the difference between soft PVC and hard PVC), which is easy to become brittle and difficult to preserve. Hard PVC does not contain softeners, so it is flexible, easy to form, not easy to brittle, non-toxic and pollution-free, and has a long storage time, so it has great development and application value.

Soft PVC generally refers to PVC with a hardness of less than 90A. Rigid PVC generally refers to a hardness of more than 100A. The connection method of soft PVC and hard PVC is generally to use co-extrusion, that is, two extruders are used to extrude at the same time, and then connect at the die head to produce soft and hard co-extrusion products.

When choosing additives, please try to use the same additives for soft and hard PVC.

(Soft PVC increases hardness, what additives are good.) Ask for a high finger to teach.

Hello! (Soft PVC increases hardness, what additives are good.) ), the full name is polyvinylchlorid, the main part is polyvinyl chloride, and other components are added to enhance its heat resistance, toughness, ductility, etc.

The top layer of this surface ** is lacquer, the main component in the middle is polyvinyl chloride, and the bottom layer is the back-coated adhesive. PVC can be divided into soft PVC and hard PVC. Soft PVC is generally used on floors, ceilings and leather surfaces, but its use is limited because soft PVC contains softener (which is also the difference between soft PVC and hard PVC), which is easy to become brittle and difficult to preserve.

Hard PVC does not contain softeners, so it is flexible, easy to form, not easy to brittle, non-toxic and non-polluting, and has a long storage time, so it has great development and application value. Soft PVC generally refers to PVC with a hardness of less than 90A. Rigid PVC generally refers to a hardness of more than 100A.

The connection method of soft PVC and hard PVC is generally to use co-extrusion, that is, two extruders are used to extrude at the same time, and then connect at the die head to produce soft and hard co-extrusion products. When choosing additives, please try to use the same additives for soft and hard PVC.

I hope mine can help you, if you are satisfied with my service, please give a thumbs up.

(Soft PVC increases hardness, what additives are good.) Ask for a high finger to teach.

(Soft PVC increases hardness, what additives are good.) Ask for a high finger to teach. Hello dear, when making soft PVC, reduce the amount of plasticizer to become harder.

PVC is an amorphous polymer with no obvious melting point and is malleable when heated to 120 150. Due to its poor thermal stability, it contains a small amount of HCl released at this temperature to promote its further decomposition, so it is necessary to add alkaline stabilizer and HCl to inhibit its catalytic cracking and side-sensitive lysis reaction. Pure PVC is a rigid product, which needs to be added with an appropriate amount of plasticizer to make it soft, and for different products, additives such as ultraviolet absorbers, fillers, lubricants, pigments, and antifungal agents need to be added to improve the performance of PVC products.

As with other plastics, the properties of resins determine the quality of the product and the processing conditions. For PVC, the resin properties related to processing are: particle size, thermal stability, molecular weight, fisheye, bulk density, purity and foreign impurities, and porosity.

The viscosity and gelatinization properties of PVC paste and paste should be measured to facilitate the grasp of processing conditions and product quality. Soft PVC is generally used on floors, ceilings and leather surfaces, but because soft PVC contains softener (which is also the difference between soft PVC and hard PVC), it is easy to become brittle and difficult to preserve, so its use range is limited. Hard PVC does not contain softeners, so it has good flexibility, easy molding, not easy to brittle, non-toxic nuclear branches, no pollution, and long storage time, so it has great development and application value.

The essence of PVC is a vacuum blister film, which is used for the surface packaging of various panels, so it is also known as decorative film and adhesive film, which is used in many industries such as building materials, packaging, and medicine. Among them, the building materials industry accounts for the largest proportion, 60%, followed by the packaging industry, and a number of other small application industries. Hope it helps.

Good evening, a simple method can be filled with some inorganic fillers such as calcium carbonate and silica to increase the density to improve the hardness, if the plastic has a certain reactivity, it can also be copolymerized with other monomers such as phenolic and epoxy modified to form composite alloys, proper control of molding temperature and pressure can also improve the surface hardness and flexibility to a certain extent. The first method is the most straightforward.

Hardening and toughening masterbatch.

Toughened masterbatch is an additive material used for modified polyolefin plastics prepared by special surface treatment and manufacturing process with micron or submicron calcium carbonate particles as the main raw material. The masterbatch can increase the impact strength of high-density polyethylene (HDPE), homopolymer polypropylene (PP) and copolymer polypropylene materials at room temperature and low temperature to 2 to 4 times that of raw materials, increase the flexural modulus by 25% to 30%, reduce the low-temperature brittleness of the material, and improve the dimensional stability of the product.

The specific grades and applications of Nanjing Sutai toughened masterbatch are as follows:

Nanjing Sutai toughened masterbatch ST11 is mainly used for HDPE water pipes, bellows, blow molding trays, hollow containers, plastic turnover boxes and other plastic products (dosage 30-50%). It can increase the impact strength of products by 2 3 times, increase the stiffness by 30%, and reduce the production cost of plastic products.

Nanjing Sutai toughened masterbatch ST12 is mainly used in copolymer PP turnover boxes, pallets, PPR pipes (dosage 10-30%), PP container bag flat wire (dosage 8-10%), and other plastic products. It can improve the impact strength of products by 3 5 times, increase the stiffness by 30 to 50%, and reduce the production cost of plastic products.

Nanjing Sutai toughened masterbatch ST13 is mainly used in HDPE low-pressure film to improve film stiffness, ductility, strength and modulus, and significantly reduce product cost. The modification effect is obvious in HDPE heavy packaging bags.

Nanjing Sutai toughened masterbatch ST14 is mainly used for modified PP for the preparation of car bumpers, door panels, instrument panels (dosage 10-30%), improve impact toughness and rigidity, reduce the amount of elastomers, and reduce product costs. It is also directly used in the preparation of plastic products such as PP turnover boxes and pallets.

Nanjing Sutai toughened masterbatch ST15 is mainly used in LLDPE or LDPE film to improve film stiffness, ductility, strength and modulus, and significantly reduce product cost. The modification effect in PE shopping bags is remarkable.