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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 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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Customized silicone products details carving process

Customized silicone products details carving process

2021-01-12 16:34:00

The use of silicone products is more and more, many people will often use, such as cups, some car-related, or some manufacturers in the production of the time will often use the corresponding accessories, so generally will be customized, but when the silicone products, there are many details still need to be considered clearly. First, on-the-spot inspection of the factory, because silicone products such as foamed silicone strips have high requirements on the workshop environment, and resolutely reject dirty, messy and miscellaneous workshops, because in this environment, the quality of silicone products produced by silicone keys cannot be guaranteed. Second, carefully check the mold drawing to confirm that the opened mold is consistent with the design drawing, otherwise it is a waste of time. O-ring silicone is becoming more and more popular because of its environmental protection performance. To understand the knowledge of silicone products, the silicone raw materials must be started. Third, customized details of silicone products: For silicone products with more colors and relatively complicated patterns, it is necessary to confirm whether the factory will simplify the drawing files. Because the traditional process, the cost of making products with more liquid silicone colors will be higher, so many factories will simplify. The multi-color integrated molding process of Haotian silicone does not need to be simplified. O-ring silicone is more and more popular because of its environmental protection performance, to understand the knowledge of silicone products silicone products factory, you have to start with silicone raw materials. Fourth, carefully confirm the sample to see if it is consistent with the drawing file, whether the mold is defective, whether the workmanship is exquisite, whether there is dirt (dirty and unclean), burrs and other problems. Silicone key manufacturers often use engraving technology to produce silicone products, such as laser engraving, also known as laser engraving, but also pay attention to when using laser engraving, because the melting point of silicone is low, only cold laser can be used, cold laser is no temperature, will not burn the surface of silicone products, seals. It is well known that the laser marking machine is a non-contact marking form, he uses the high energy density of the laser beam on the target, so that the target surface physical or chemical changes, so as to obtain a visible pattern of marking, high energy rubber products laser beam focused on the surface of the material, so that the material quickly vaporized, the formation of pits. Silicone products use extremely fine laser beams focused by laser engraving like cutting tools, which can remove the surface materials of objects point by point. Its advanced nature lies in that the marked rubber key process is non-contact processing, and no mechanical extrusion or mechanical stress is generated, so the processed objects will not be damaged. Due to the small size, small heat affected area and fine processing after laser focusing, some processes that cannot be realized by regular methods can be completed.

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Silicone rubber products hygiene unqualified reason main characteristics

Silicone rubber products hygiene unqualified reason main characteristics

2021-01-12 16:27:47

At present, it is found that the sanitary index of exported silicone rubber products is not qualified mainly for the following three reasons:. First, the quality control of raw materials is not strict. The O-ring seal is insulated with silicone pad and has excellent high temperature resistance. Silicone (food grade silicone) silicone products can withstand high temperatures of 200 ℃ and can be used for a long time. The raw materials produced by this product meet SGS standards and pass FDA food grade silicone testing standards. It is tasteless and nontoxic. Manufacturers produce according to models. Color and shape can be customized. Some enterprises of silicone key have not paid enough attention to the control of raw materials used for kitchen tableware. Without testing (checking and testing) of raw materials, silicone materials with low quality grade are used for the production of food contact products, or unqualified color glue is used for coloring in the production of sealing rings, resulting in the hygiene index of molded products exceeding the standard. Second, the production process is arbitrary. O-ring silica gel is becoming more and more popular because of its environmental protection performance. To understand the knowledge of liquid silica gel in silica gel products, one must start with silica gel raw materials. Silicone sealing rings are mainly used for waterproof sealing and preservation of daily necessities such as fresh-keeping boxes, electric rice cookers, drinking fountains, lunch boxes, heat preservation boxes, water cups, ovens, magnetization cups, coffee pots, etc. Due to the particularity of raw materials, silica gel products factories, silicone rubber miscellaneous parts have high requirements for production process control, especially enough baking time is required to remove volatile substances after the products are formed. In order to pursue production efficiency, some companies do not have silicone key manufacturers to pack the finished products into boxes when they reach the specified baking time, resulting in the total migration amount exceeding the standard. Yinzhou Bureau has found that 3 batches of products are unqualified due to this reason since this year. Silicone products are made of methyl vinyl silicone rubber as the base glue, and various fillers (reinforcing agents, heat-resistant agents, modifiers, etc.) are added to the seals through mixing, bookflow, filtration, sulfur addition, molding, extrusion, bonding and other production processes. Vulcanized rubber products have the following characteristics:. (1) High and low temperature resistance: rubber products can be used for a long time at 200 ℃, and still have elasticity at -60 ℃. (2) Electrical insulation properties: The dielectric properties of silicone rubber are excellent, especially the dielectric properties at high temperatures are much higher than those of ordinary organic rubber, and the dielectric strength is almost unaffected by temperature in the range of 20-200 ℃. (3) Excellent weather resistance, ozone resistance and ultraviolet radiation resistance, long-term outdoor use does not crack, it is generally believed that silicone rubber can be used outdoors for more than 20 years.

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Rubber product performance requirements for fillers

Rubber product performance requirements for fillers

2020-12-05 16:36:20

Rubber, together with plastic and fiber, is called the three major synthetic materials. It is the only polymer material with high flexibility and excellent elasticity. Silicone product manufacturers are easy to clean: silicone cake mold products can be washed with clean water after use, and silicone products can also be cleaned in dishwashers. Long life: silicone material properties are very stable, made of cake mold products, than other materials have a longer life. Soft and comfortable: thanks to the softness of silica gel material, cake mold products feel comfortable, very flexible, no deformation, silica gel products with silica gel keys open porous structure, can absorb many substances, is a good desiccant, adsorbent and catalyst carrier. The adsorption effect of silica gel is mainly physical adsorption, which can be regenerated and used repeatedly. Seal ring acid is added to alkali metal silicate (such as sodium silicate) solution to acidify it, and then a certain amount of electrolyte is added to stir, I .e. silicic acid gel is generated, or acid or ammonium salt can be added to concentrated sodium silicate solution to generate silicic acid gel. The biggest characteristic of rubber is that the elastic modulus is very small and the elongation is high. Silica gel products have an open porous structure, can absorb many substances, is a good desiccant, adsorbent and catalyst carrier, the adsorption of silica gel is mainly physical adsorption, can be regenerated and used repeatedly, in alkali metal silicate (such as silica gel products factory sodium) solution plus acid, so that 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. The reinforcing filler particles should have strong chemical active silica gel key manufacturer in name, can produce good combination with rubber, can improve the mechanical function, aging resistance function and adhesive function of vulcanized rubber, silica gel products have open porous structure, can adsorb many substances, is a good desiccant, adsorbent and catalyst carrier, the adsorption effect of sealing silica gel is mainly physical adsorption, can be regenerated and repeatedly used. Add acid to alkali metal silicate (such as sodium silicate) solution to acidify it, and then add a certain amount of electrolyte to stir to generate silicic acid gel, or add acid or ammonium salt to concentrated sodium solution of silicone rubber products to generate silicic acid gel. The non-reinforcing filler particles are chemically inert in name, do not produce chemical combination with rubber, and do not affect the mechanical function, weather resistance, acid and alkali resistance and water resistance of vulcanized rubber. Individually, the finer the rubber key particles of the reinforcing filler, the larger the nominal product, the larger the contact area with the rubber, and the better the reinforcing consequences. The finer the non-reinforcing filler particles, the better the mixing consequences after adding rubber, but the evacuation must be uniform. If the evacuation is uneven, even if the particles are very fine, the mixing consequences are not good.

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Rubber products production process common raw materials

Rubber products production process common raw materials

2020-12-05 16:23:10

The process of converting plastic rubber into elastic rubber by vulcanization is called vulcanization. It is to add a certain amount of vulcanizing agent (such as sulfur, vulcanization promoter, etc.) to the semi-finished product made of raw rubber (carried out in a vulcanization tank), heat and keep warm at the temperature of the designated silica gel product, so that the linear molecules of raw rubber are crosslinked to form a broken network structure through generation and sulfur bridges, so that the plastic rubber into the existence of high elastic vulcanized rubber. Silicone products manufacturers are easy to clean silicone keys: silicone cake mold products can be washed in clean water after use, and can also be cleaned in the dishwasher. Long life: silicone material properties are very stable, made of cake mold products, seals 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 structure and can absorb many substances. It is a good desiccant, liquid silica gel adsorbent and catalyst carrier. The adsorption of silica gel is mainly physical adsorption, which can be regenerated and used repeatedly. Acid is added to the alkali metal silicate (such as sodium silicate) solution to acidify it, and then a certain amount of electrolyte is added into the silica gel product factory for stirring to generate silicic acid gel, or in a more concentrated sodium silicate solution with acid or ammonium salt can also generate silicic acid gel, because the crosslinking bond is composed of sulfur, so called, vulcanization. Silica gel products with open silica gel key manufacturers of porous 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. Butyl rubber IIR. Advantages of seals: they are impermeable to most individual gases, have good resistance to sunlight and odor, can be exposed to animals or animal oil or gasifiable chemicals, problems: they are not advocated to be used at the same time as petroleum solvents, kerosene and aromatic hydrogen rubber products, and are used for inner tubes, leather bags, rubber paste paper, window frame rubber, steam hoses, heat-resistant conveyor belts, etc. EPDM. Advantages: good weather resistance and ozone resistance, excellent water resistance and chemical resistance of rubber buttons, alcohols and ketones, high temperature vapor resistance, good non-permeability to gas, silica gel products with open porous structure, can absorb many substances, is a good desiccant, adsorbent and catalyst carrier.

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