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Dongguan Mingzhen Rubber & Plastic Products Co., Ltd.

18 yearsFocus on R & D and production of silicone rubber products

Become a respected supplier of silicone rubber products

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+86-136 6988 8704

Dongguan Mingzhen Rubber & Plastic Products Co., Ltd.
18 years focus on silicone rubber products research and development and production
Professional customization

Dongguan Minz Rubber & Plastics Co., Ltd.

Add.: No.4, New Industrial Road, Shipai Tangwei, shipai town, Dongguan City
Tel: +86-0769-8665 2688
Fax: +86-796-8180 6477
Contact: Miss Li +86-136 6988 8704
Mailbox:lixiaoxia@dgminz.com.cn

Silicone products why will appear dark lines

Silicone products why will appear dark lines

2021-01-18 15:05:40

The newly trained raw materials should pay attention to the temperature adjustment during molding. If the temperature is insufficient, stripes and even unripe phenomena will appear after the silicone products are molded. Therefore, the temperature should be raised every time they are molded. The silicone raw materials will also have problems after the silicone products factory is over-vulcanized. The raw materials themselves are transparent and vulcanized at high temperature after adding color masterbatch, and there is no problem at normal high temperature. However, if the vulcanization time is too long, with the increase of temperature, the color masterbatch will have a slight scattering phenomenon of silicone key manufacturers in the raw materials, so there will also be color deviation phenomenon inside the product and dark marks. Therefore, it is not advisable to have too high temperature in the production process, and the temperature is too low to keep up with it. In this way, the dark mark phenomenon of the seal of the product can be solved and the customer is more satisfied. Silicone strip in addition to good sealing, there are many characteristics of quite good. 1. Silicone sealing strip has good sealing performance, high temperature resistance, weather resistance, aging resistance, shockproof and waterproof, and can fit various rubber products with smooth surface materials. 2. Self-adhesive tape, better sealing performance, long-term use of high temperature resistant glue does not fall off, environmental protection and safety, good insulation, high temperature resistance, small compression deformation, strong resilience, and non-toxic. 3, heat resistance: rubber button silicone rubber has much better heat resistance than ordinary rubber, can be used almost forever at 150 degrees without performance change, can be used continuously at 200 degrees for 10,000 hours, at 350 degrees can also be used for a period of time. We often encounter many problems in the production process of silicone products. What gives us a headache is the quality of the products. The quality problems can be divided into many types, including artificial problems, natural phenomena, mold problems, raw material problems of silicone products, etc. There are too many and too many problems. Then we find that the products have stripes and dark lines. Then the following small series will tell you about the cause analysis of dark lines in silicone products. We carry out glue mixing process. Due to mechanized silicone key adhesive, uneven mixing will occur more or less. After adding vulcanizing agent and color masterbatch, the mixing time is too short, resulting in uneven original internal color and half dark and half light color. Therefore, it is important for glue mixing personnel to remind that the first process is required by sealing ring, and too long time after glue mixing will also lead to product quality problems in silicone products, generally, the material that is placed too long has a great influence on the hardness of the product. It should be used in time, and it should not be placed too long for one to two days. Liquid silica gel.

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Why high temperature silicone products silicone tube will change color

Why high temperature silicone products silicone tube will change color

2021-01-16 16:35:51

Silicone tube manufacturers analyze for you: it is of course a good idea to use anti-yellow agent and anti-yellow vulcanizing agent, but it is also important to pay attention to whether the silicone tube you use is ideal. Silicone products factories cannot add too many internal release agents and zinc stearate. Therefore, it is necessary to communicate with suppliers to see if there is hydrogen-containing silicone oil in it to provide anti-yellow effect. If the iron content in it is too high, a silicone key manufacturer will definitely yellowing. Process of silicone products. Molding molding is the most common manufacturing process, which is mainly completed by mold matching. The shape of the mold determines the shape of the silicone product. Molded silicone products are usually molded by applying pressure through a vulcanizing machine after the high-temperature mold of the seal is put into the solid silicone raw material added with vulcanizing agent, and the high-temperature sulfur is solidified. The hardness of molded silicone rubber products is usually 30 C- 70 C. This manufacturing process is relatively simple and suitable for all silicone products. Injection (injection) this process is a relatively high quality requirements, is a combination of liquid silica gel and plastic. Its products are characterized by good thermal stability, cold resistance rubber buttons, excellent electrical insulation performance, and no toxic substances when burned. Therefore, it is used in health products, automobiles, baby products, medical supplies, diving supplies, kitchen utensils and seals. What is the cause of the discoloration of silicone tube products at high temperature? We will all encounter some discoloration of products in our normal work. The latex tube will turn white when stored at normal temperature and the silicone tube will turn yellow at high temperature. The existing problem with silicone products is that the transparent silicone tube that food needs to contact will turn yellow after being placed at a high temperature of 200 ℃ for 4 hours. What is going on. C- 15 with silica gel high anti-yellow vulcanizing agent, the problem may be solved by silica gel keys. Generally, food-grade products have this requirement. To prevent secondary sulfur yellowing, be sure to use anti-yellowing catalyst. Both are indispensable, but these two things will make it a little sticky during hydraulic production, which is something to pay attention to by the sealing ring. According to the amount of silica gel plus 2-3 thousandths of hydrogen-containing silicone oil, high hydrogen-containing silicone oil can solve the yellowing problem, but the product may be a little brittle and sticky. A layer of silicone oil can be sprayed on the mold to solve the demoulding problem of liquid silica gel. In addition, platinum is the only bridge.

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Why the surface of the rubber seal of the seal fitting will crack

Why the surface of the rubber seal of the seal fitting will crack

2021-01-14 11:16:48

What are the factors affecting the surface of rubber seals in silicone products factory. Analysis of the causes of cracking of silicone rubber seal fittings. Generally, the service life of silicone rubber products is relatively long. If the silicone rubber products crack after not long use of the seal, it will seriously affect the customer's experience and trust in the manufacturer. Therefore, the quality of silicone products has become a crucial item. There are actually many ways to prevent the fracture of silicone rubber products, except to comply with the use environment of rubber products, more importantly, it is important to control the product quality at the source. The raw materials for the production of silicone rubber products are the key. If the raw materials are better, the products produced will have good service life. Rubber keys will have different product quality requirements if the prices of the products are different in the market. Therefore, silicone products factories will have different requirements for raw materials. Manufacturers of brand silicone seals usually choose rubber materials with better extensibility. Silicone cake mold products can be cleaned after rinsing in water, but also in the dishwasher. Long life: silicone material properties are very stable, made of silicone products cake mold products, than other materials have a longer life. Soft and comfortable: thanks to the softness of the silicone material, the cake mold product feels comfortable to the touch, is extremely flexible and does not deform. Silica gel products have an open porous silica gel button structure, can absorb many substances, is a good desiccant, adsorbent and catalyst carrier, silica gel adsorption is mainly physical adsorption, can be regenerated and used repeatedly, in alkali metal silicate (such as sodium silicate) sealing ring solution with acid, acidification, and then add a certain amount of electrolyte stirring, that is, the formation of silicic acid gel, alternatively, the addition of an acid or ammonium salt to a more concentrated sodium silicate solution can also produce a silicic acid gel. Under the pressure of liquid silica gel in the abnormal operation of equipment, the leakage of rubber seals exceeds the allowable level. The leakage of rubber seals will not only cause the loss of medium, but also damage the hard sealing data due to the constant leakage of equipment medium. The sealing surfaces of rubber seals commonly used in silicone product factories are smooth and flat. However, it is also very difficult to achieve absolute leakage under the pressure of medium, under the designated pressure value, if the rubber seal is invisible to the naked eye at the outlet end and the silicone key manufacturer does not leak, it is considered that the sealing function is qualified.

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How to enhance rubber sealing ring for anti-aging silicone products

How to enhance rubber sealing ring for anti-aging silicone products

2021-01-13 16:37:46

Some people say that when he mentions silicone products, he will think of silicone key manufacturers of gender products in his mind. Many people also say that when he mentions silicone products, he will feel that such products are only one kind of raw material. However, people also need to say that apart from gender products, there are also silicone product mobile phone cases that he can understand when discussing silicone products, the real silicone seal products in addition to this more excellent effect, what are the silicone products you never know. Silicone products are also known as silicone rubber, but silicone products belong to large categories, including silicone and inorganic silicon, and silicone and inorganic rubber products are also a type, including silicone, liquid glue, perforated silicone products, coarse-porous silicone products and fine-porous silicone products. Silicone rubber products belong to a common rubber key commodity in various manufacturing industries and belong to a raw material in silicone products-silicone-solid silicone products. Therefore, many spare parts of silicone products seen in the sales market are all produced and processed by purchasing silicone solid or liquid silicone rubber. Rubber sealing ring is a sealing product with good elasticity. Small stress in different media will produce large deformation. This deformation can provide contact pressure, compensate for leakage gap, and achieve the purpose of sealing. O-ring cold resistance Silicone products: ordinary rubber is delayed for -20 °-30 °, that is, silicone rubber still has good elasticity at -60 °-70 °, some specially formulated silicone rubbers can also withstand extremely low temperatures. The aging phenomena such as cracking, hardening, stickiness, pulverization and tear strength decrease caused by the silicone key rubber sealing ring under the condition of repeated deformation are called fatigue aging. The heat resistance of O-ring: silicone rubber has much better heat resistance than ordinary rubber. It can be used almost forever without performance change for several sealing rings at 150 degrees. It can be used continuously for 10000 hours at 200 degrees and for a period of time at 350 degrees, widely used in heat-resistant occasions, hot water bottle sealing ring, pressure pot ring heat-resistant hand liquid silicone handle, not only rubber sealing ring, in the actual use of rubber products also have a lot of fatigue aging, such as mobile phone accessories, shockproof rubber products and so on. Therefore, in the design of rubber sealing ring with excellent fatigue aging resistance, the design of formula and processing technology should be carried out from the rubber type, crosslinking agent and vulcanization system, filler, antioxidant type, processing technology, etc.

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Silicone seal characteristics affect the quality of silicone tube

Silicone seal characteristics affect the quality of silicone tube

2021-01-12 16:43:58

Silicone seals are familiar to many people, but they know less about oil-taking silicone seals. What are the characteristics of oil-taking silicone seals? Next, rubber will answer for everyone. O-ring silicone products are becoming more and more popular because of their environmental protection performance. Oil-taking silicone seals have the following characteristics:. 1. Good self-lubricating performance and processing performance. 2, take the oil silicone seal has good heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inert silicone keys and smaller surface tension (explain: the object is subjected to tension when the mutual traction), in addition to low viscosity-temperature coefficient, relatively high resistance to compression, some varieties also have the performance of radiation resistance. 3. The oil-taking silicone seal has a slow-release effect of a sealing ring, which not only ensures the lubrication effect, but also improves the use time. 4. The oil-taking silicone seal feels smooth, the surface finish is relatively high, the face is relatively flat, it will not produce sticky dust, the wear resistance is improved, and the adhesion is strong. Liquid silica gel 5, dustproof, anti-sticking performance is good, but also has a low viscosity temperature coefficient, high resistance to compression. What is the reason that affects the quality of silicone tube. 1. The quality of silicone rubber raw materials is not good, the performance is too poor, and the toughness is not good, so it will be very easy to cause rupture in the silicone product factory, so the silicone raw materials must be closed. 2. Silicone products are incomplete in the vulcanization process. When the molding die temperature is too low or the vulcanization time is too short, it will cause the product to cling to the mold and not be easily demoulded. Silicone key manufacturers are also prone to cracking and other conditions may occur. Therefore, it is necessary to increase the molding temperature or lengthen the vulcanization time in the vulcanization process. 3, silicone products molding temperature is too high, the temperature is too high will make the silicone products in the seal molding brittle, easy to break when demoulding, also prone to rupture, so appropriate to reduce the molding temperature can be. 4. The surface of the silicone product molding mold is too rough or accumulates dirt, so it is not conducive to demoulding, and it will also cause cracking of rubber products. It only needs to be clear or electroplated on the mold. 5. Sometimes, because the operator's operation method for demoulding is irregular, it is easy to have many problems. Therefore, it is necessary for the demoulding operator to have operation training. The cracking of silicone rubber key rubber products is inevitable. However, we can reduce the proportion of defective products caused by cracking through our good specifications. Generally, the cracked silicone rubber products account for the majority of miscellaneous parts, so we must pay attention to these aspects in the production process.

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