CN101701106B - Two-component addition type room temperature vulcanized silicone rubber for manufacturing handprint mold and footprint mold - Google Patents
Two-component addition type room temperature vulcanized silicone rubber for manufacturing handprint mold and footprint mold Download PDFInfo
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Abstract
The invention discloses a two-component addition type room temperature vulcanized silicone rubber for manufacturing a handprint mold and a footprint mold, which comprises a basic component and a catalyst component, wherein the volume ratio of the basic component to the catalyst component is 1-3:1; the basic component comprises the following raw materials: 40-80% of vinyl silicone oil, 0.5-10% of methyl hydrogen silicone fluid of cross-linking agent, 0.01-0.5% of inhibitor, 3-15% of releasing agent, 1-10% of plasticizer and 10-60% packing; and the catalyst component comprises the following raw materials: 40-80% of vinyl silicone oil, 3-15% of methyl vinyl siloxane coordination platinum complex, 3-15% of releasing agent, 1-10% of plasticizer and 10-60% of packing. The invention has convenience and safety.
Description
Technical field
The present invention relates to the silicon rubber field, specifically is a kind of double component room temperature vulcanization silicon rubber that is used to make impression of the hand mould and footprint mould.
Background technology
Addition type room temperature vulcanized silicone rubber sulphur (Gu) be two components separately before changing, a component mainly is vinyl silicone oil and Methyl Hydrogen Polysiloxane Fluid linking agent, another component main component is to contain platinum complex catalyst.During use two components are mixed according to a certain percentage, solidify under the room temperature, set time is different because of prescription, does not wait to a few hours in several minutes.Dual composition addition type room temperature vulcanized silicone rubber sulphur (Gu) to change reaction principle be the alkene addition reaction of hydrogen, addition reaction, generation-CH take place with the polycarbosilane hydroxide (hydrogen of SiH) of Methyl Hydrogen Polysiloxane Fluid linking agent in the vinyl on the vinyl silicone oil molecule under platinum complex catalysis
2-CH
2-Si-cross-link bond.Discharging because of the alkene addition reaction of hydrogen has small molecules, do not have contraction so solidify the back, is excellent cast material.Can add reinforcing filler in the prescription in addition, as be fuming type silicon-dioxide and other filler, as silica powder, silicon powder, lime carbonate, kaolin, titanium dioxide, talcum powder etc., this silicon rubber has suitable physical and mechanical properties, room temperature sulphur (Gu) change, easy to use, can be used as sealing material and adhesives etc.
Impression of the hand mould and footprint mould on the market generally all is that organic polymer material or modified clay are made now.Organic polymer impression of the hand mould and footprint mold materials, it is the double-component cold curing type, as epoxy resin, before the seal carving mould, basic component of Resins, epoxy and solidifying agent are mixed, palm or sole are pressed on the still uncured Resins, epoxy material, some hrs after fixing, impression of the hand or footprint are just forever enrolled the resin surface after curing.But the used solidifying agent of Resins, epoxy is an organic amine curing agent, and irritating smell and toxicity are arranged, and is unfavorable to infantile health.When using in addition inconvenience is arranged in celebration activity, because its curing speed is slow, need more than 2 hours, when celebration activity finished, moulage is completely solidified not also.The clay moulage is moist puttylike nian before using, and behind admission impression of the hand or the footprint, makes clay dry voluntarily, and drying process is very slow, needs more than 24 hours.Dried clay is more crisp, easily breaks into pieces, is difficult for permanent the preservation.
Xian Shi impression of the hand mould and footprint mold materials are in security in a word, and there is obvious defects curing speed and materials ' durability aspect.
Summary of the invention
The invention provides a kind of two-component addition type room temperature vulcanized silicone rubber that is used to make impression of the hand mould and footprint mould, form, the silica cement that two components can furnishing very high viscosity puttylike nian by the basic component and the catalyst component of separate packages.
Technical scheme of the present invention is:
Be used to make the two-component addition type room temperature vulcanized silicone rubber of impression of the hand mould and footprint mould, include basic component and catalyst component, it is characterized in that: according to the adjusting of the content of metal platinum complex compound catalyst in the catalyst component, the volume ratio of described basic component and catalyst component can be respectively 1: 1; 2: 1; Or 3: 1.
(1), in the described basic component there be each material component:
Vinyl silicone oil 40-80%
Linking agent Methyl Hydrogen Polysiloxane Fluid 0.5-10%
Inhibitor 0.01-0.5%
Releasing agent 3-15%
Softening agent 1-10%
Filler 10-60%;
Described vinyl silicone oil is the linear ethylene base silicone oil of viscosity at the 50-65000 centipoise, vinyl molar content 0.05%-0.5%; Can contain methyl on the vinyl silicone oil Siliciumatom, ethyl or phenyl.
Described Methyl Hydrogen Polysiloxane Fluid linking agent, viscosity 20-50 centipoise, hydrogen content 0.3-2.0% has hydrogen atom directly to link to each other with chemical bond with Siliciumatom on the methyl-silicone oil;
Described inhibitor is low-molecular-weight liquid, selects 1 for use, and 3-divinyl dimethyl sily oxide is or/and ring-like vinylsiloxane;
The kinematic viscosity of described releasing agent is 5-40mm
2/ s selects organic silicone oil for use or/and mineral oil;
Described softening agent is selected phthalic ester plasticizer or environment-friendly type softening agent for use;
Described filler is selected silicon dioxide powder, aluminum oxide powder, titanium dioxide, lime carbonate, talcum powder, kaolin, polynite, unformed specific surface area be fuming type white carbon black or the wherein multiple mixture between the 160-300 meters squared per gram for use;
(2), in the described catalyst component there be each material component:
Vinyl silicone oil 40-80%
Ethylene methacrylic radical siloxane coordination platinum complex catalyst
Releasing agent 3-15%
Softening agent 1-10%
Filler 10-60%;
Described vinyl silica gel is the linear ethylene ylmethyl silicone oil of viscosity at the 50-65000 centipoise, vinyl molar content 0.05%-0.5%; Can contain methyl on the vinyl silicone oil Siliciumatom, ethyl or phenyl.
Described ethylene methacrylic radical siloxane coordination platinum complex catalyst, in catalyst component, the actual effective content of platinum is 5ppm-50ppm, ethylene methacrylic radical siloxane coordination platinum complex catalyst is to be made by Platinic chloride and vinyl silicone oil reaction;
The kinematic viscosity of described releasing agent is at 5-40mm
2/ s selects organic silicone oil or mineral oil for use;
Described softening agent is selected phthalic ester plasticizer or environment-friendly type softening agent for use;
Described filler is selected silicon dioxide powder, aluminum oxide powder, titanium dioxide, lime carbonate, talcum powder, kaolin, polynite, unformed specific surface area be fuming type white carbon black or the wherein multiple mixture between the 160-300 meters squared per gram for use.
Linking agent Methyl Hydrogen Polysiloxane Fluid in the described basic component can contain other substituted radical, and as ethyl and phenyl, each molecule of linking agent Methyl Hydrogen Polysiloxane Fluid contains the hydrogen atom that directly links to each other with Siliciumatom more than two; Vinyl silicone oil in the described basic component is the linear methyl ethylene silicone oil that contains two vinyl-functional end groups on each polysiloxane molecule, linear methyl phenyl vinyl silicone oil, linear ethyl vinyl silicone oil, or the mixture of above-mentioned silicone oil; Vinyl silicone oil in the described catalyst component is the linear methyl ethylene silicone oil that contains two vinyl-functional end groups on the polysiloxane molecule, linear methyl phenyl vinyl silicone oil, linear ethyl vinyl silicone oil, or the mixture of above-mentioned silicone oil; Platinum content weight percent accounts for 0.2-5% in the ethylene methacrylic radical siloxane coordination platinum complex catalyst in the described catalyst component.
Be added with the mineral dye of metallic luster in the described basic component, metallic luster such as gold, silver color, coppery etc., the weight percent of the shared basic component of mineral dye is 2-20%.Also can add the pigment dyestuff of other any color,, the weight percent of shared basic component is 0.5-5%.。
In the two components of the present invention, can add pigment in the basic component, color is arranged; Catalyst component does not have pigment, is white.Basis component and catalyst component can 1: 1, or 2: 1 or 3: 1 volume ratios be mixed into even of the same colour after, be in 2 minutes to 3 hours in the working hour, can enroll impression of the hand or footprint, curing molding in 10 minutes to 5 hours.Parameters such as working hour and set time can be by changing catalyst content in the prescription, inhibitor content and adjusting.According to the different users and the needs of use occasion, the working hour can be adjusted in several minutes to a few hours scopes, can correspondingly be adjusted in several minutes set time to a few hours scopes.
The present invention is its surperficial tolerance range height compared to the remarkable improvement of other impression of the hand mould and footprint mold materials, solidifies the back linear shrinkage less than 0.2%, and fingerprint and palmmprint details are clear indeformable; Material hygienic safety free from extraneous odour; Easy to use, but fast setting or solidified nature at a slow speed can be adjusted in several minutes set time to the scope of a few hours.It is curable in 30 minutes to adjust prescription if desired; Material after the curing has flexible resilient.
Embodiment
Be used to make the two-component addition type room temperature vulcanized silicone rubber of impression of the hand mould and footprint mould, include the basic component and the catalyst component of separate packages:
The basis component is mixed by the following raw materials component:
(1), vinyl silicone oil: weight percent 40-80%, viscosity is at the linear methyl ethylene methyl-silicone oil of 50-65000 centipoise, linear methyl phenyl vinyl silicone oil, linear ethyl vinyl silicone oil, or the mixture of above-mentioned silicone oil can use.The vinyl silicone oil of several different viscosity can be mixed and adjust to required viscosity, the linear ethylene base silicone oil that contains two vinyl-functional end groups on each polysiloxane molecule is more suitable, 0.05 mole of %-0.5 mole of contents of ethylene %;
(2), linking agent Methyl Hydrogen Polysiloxane Fluid: weight percent 0.5-10%, viscosity 20-50 centipoise, hydrogen content 0.3%-1.0%, there is hydrogen atom directly to link to each other with chemical bond on the methyl-silicone oil with Siliciumatom, the Methyl Hydrogen Polysiloxane Fluid linking agent can also contain other substituted radical, as alkyl (ethyl), aryl, halogeno-group and other substituting group.Each molecule of linking agent preferably contains the hydrogen atom that directly links to each other with Siliciumatom more than two;
(3), inhibitor: be low-molecular-weight liquid, weight percent 0.01-0.5% is used to postpone addition curing reaction, can collect and record impression of the hand or footprint after making the user have time enough that two component material are mixed.Inhibitor commonly used is 1,3-divinyl dimethyl sily oxide and ring-like vinylsiloxane.
(4), releasing agent: weight percent 3-15%, kinematic viscosity is at 5-40mm
2/ s is easy to curing back silicon rubber is taken off from trace surface, and industrial releasing agent commonly used can be used as organic silicone oil and mineral wet goods, and releasing agent purity is food grade or medical grade;
(5), softening agent: weight percent 1%～10%, industrial silicon rubber softening agent commonly used can be used, as phthalic ester plasticizer, but for greater safety, the softening agent of environment-friendly type is more suitable, as the DX-360 environment-friendly plasticizer of Nantong city precious one-tenth softening agent Science and Technology Ltd. production;
(6), filler: weight percent 10%-60%, widely available filler comprises silicon dioxide powder, aluminum oxide powder, titanium dioxide, lime carbonate, talcum powder, kaolin, polynite or the like, wherein unformed specific surface area is more suitable between the type white carbon black of being fuming of 160-300 meters squared per gram, Cab-o-SilTS-530 as the production of Cabot company, Cab-o-Sil TS-140, the AR200 that Cab-o-Sil M5 and Evonik Degussa company produce, R812, R106 and R8200, optional single filler of filler or mixed fillers;
(10), pigment: available metal powder mineral dye, but also using liquid color.The weight percent content of metal powder mineral dye in component is 2%～20%, as the copper bronze, and aluminium silver powder; Also can use organic color of any color, the degree of color in component is 1%-5%.
Catalyst component is mixed by the following raw materials component:
(1) vinyl silicone oil: weight percent 40-80%, linear methyl ethylene methyl-silicone oil, linear methyl phenyl vinyl silicone oil, linear ethyl vinyl silicone oil, or the mixture of above-mentioned silicone oil can use.The vinyl silicone oil of several different viscosity can be mixed and adjust to required viscosity, the linear ethylene base silicone oil that contains two vinyl-functional end groups on each polysiloxane molecule is more suitable, 0.05 mole of %-0.5 mole of contents of ethylene %; The range of viscosities 50-65000 centipoise of vinyl silica gel;
(2) ethylene methacrylic radical siloxane coordination platinum complex catalyst: platinum content accounts for the platinum complex catalyst of 0.1-5%, as the P21-3000 platinum complex catalyst of the Liyang extra large chemical industry of indigo plant company limited production.In catalyst component, the actual effective content of platinum is that the addition reaction under 5ppm-50ppm. hydrogen and the vinyl room temperature needs noble metal catalyst, only is platinum complex catalyst, platinum complex catalyst is made by Platinic chloride and vinyl silicone oil reaction, as the complex compound of other precious metal or salt also useful as catalysts,, consider toxicity as corresponding complex compound of precious metals such as palladium, rhodium or salt useful as catalysts, platinum complexes catalyzer safety non-toxic, optimum;
(3) releasing agent: weight percent 3-15%, kinematic viscosity is at 5-40mm
2/ s is easy to the toy after solidifying is taken out from mould form, also makes two components of puttylike nian not touch with one's hand.Industrial releasing agent commonly used can be used as organic silicone oil and mineral wet goods, and releasing agent purity is food grade or medical grade preferably;
(6) softening agent: weight percent 1-10%, industrial silicon rubber softening agent commonly used can be used, as phthalic ester plasticizer, but for greater safety, the softening agent of environment-friendly type is more suitable, as the DX-360 environment-friendly plasticizer of Nantong city precious one-tenth softening agent Science and Technology Ltd. production;
(7) filler: weight percent 10%-60%, widely available filler comprises silicon dioxide powder, aluminum oxide powder, titanium dioxide, lime carbonate, talcum powder, kaolin, polynite or the like, wherein unformed specific surface area is more suitable between the type white carbon black (silicon-dioxide) of being fuming of 160-300 meters squared per gram, Cab-o-Sil TS-530 as the production of U.S. Cabot company, Cab-o-Sil TS-140, the AR200 that Cab-o-Sil M5 and German EvonikDegussa company produce, R812, R106 and R8200 etc., optional single filler of filler or mixed fillers;
Preferably use the star-like stirrer of duplicate rows (the perfect vacuum degree is lower than 0.02MPa) under vacuum even in stirring at room, the material of gained is puttylike nian, and is tack-free.Two components mix with 1: 1 volume ratio, and to the hobby of shade and the requirement of curing speed speed, the volumetric mixture ratio of basic component and catalyst component also can be 2: 1 or 3: 1 according to the individual.The basis component is many, and catalyst component is few, and color is dark behind the mixing, and curing speed slows down; The basis component is few, and catalyst component is many, and of light color behind the mixing, curing speed is fast.At room temperature, after mixing, palm or sole can be pressed on material surface some seconds, remove palm or sole, treat material cured after, impression of the hand mould or footprint mould are promptly finished.Formula adjustment is paved and follow-up admission impression of the hand and footprint after allowing general user have time enough that two component material are mixed.Under room temperature 23-25 degree centigrade, approximately want 90-120 second, the material mixing can be paved, in 2-5 minute, enroll impression of the hand and footprint, curing molding in 20-30 minute then.
Claims (3)
1. be used to make the two-component addition type room temperature vulcanized silicone rubber of impression of the hand mould and footprint mould, include the basic component and the catalyst component of separate packages, it is characterized in that: the volume ratio of described basic component and catalyst component is 1-3: 1;
(1), in the described basic component there be each material component:
Vinyl silicone oil 30-80%
Linking agent Methyl Hydrogen Polysiloxane Fluid 0.5-10%
Inhibitor 0.01-0.5%
Releasing agent 3-15%
Softening agent 1-10%
Filler 10-60%;
Described vinyl silicone oil is the linear ethylene ylmethyl silicone oil of viscosity at the 50-65000 centipoise, vinyl molar content 0.05%-0.5%;
Described Methyl Hydrogen Polysiloxane Fluid linking agent, viscosity 20-50 centipoise, hydrogen content 0.3-1.0% has hydrogen atom directly to link to each other with chemical bond with Siliciumatom on the methyl-silicone oil;
Described inhibitor is low-molecular-weight liquid, selects 1 for use, and 3-divinyl dimethyl sily oxide is or/and ring-like vinylsiloxane;
The kinematic viscosity of described releasing agent is 5-40mm
2/ s selects organic silicone oil for use or/and mineral oil;
Described softening agent is selected phthalic ester plasticizer or environment-friendly type softening agent for use;
Described filler is selected silicon dioxide powder, aluminum oxide powder, titanium dioxide, lime carbonate, talcum powder, kaolin, polynite, unformed specific surface area be fuming type white carbon black or the wherein multiple mixture between the 160-300 meters squared per gram for use;
(2), in the described catalyst component there be each material component:
Vinyl silicone oil 30-80%
Ethylene methacrylic radical siloxane coordination platinum complex catalyst
Releasing agent 3-15%
Softening agent 1-10%
Filler 10-60%
Described vinyl silicone oil is the linear methyl ethylene silicone oil of viscosity at the 50-65000 centipoise, vinyl molar content 0.05%-0.5%;
Described ethylene methacrylic radical siloxane coordination platinum complex catalyst; In catalyst component, the actual effective content of platinum is 5ppm-50ppm;
The kinematic viscosity of described releasing agent is at 5-40mm
2/ s selects organic silicone oil or mineral oil for use;
Described softening agent is selected phthalic ester plasticizer or environment-friendly type softening agent for use;
Described filler is selected silicon dioxide powder, aluminum oxide powder, titanium dioxide, lime carbonate, talcum powder, kaolin, polynite, unformed specific surface area be fuming type white carbon black or the wherein multiple mixture between the 160-300 meters squared per gram for use.
2. the dual composition addition type room temperature vulcanized silicone rubber that is used to make impression of the hand mould and footprint mould according to claim 1, it is characterized in that: the linking agent Methyl Hydrogen Polysiloxane Fluid in the described basic component can contain other substituted radical, and each molecule of linking agent Methyl Hydrogen Polysiloxane Fluid contains the hydrogen atom that directly links to each other with Siliciumatom more than two; Vinyl silicone oil in the described basic component is the linear methyl ethylene silicone oil that contains two vinyl-functional end groups on each polysiloxane molecule, or linear methyl phenyl vinyl silicone oil, or linear ethyl vinyl silicone oil, also can be the mixture of above-mentioned silicone oil; Vinyl silicone oil in the described catalyst component is the linear methyl ethylene silicone oil that contains two vinyl-functional end groups on each polysiloxane molecule, or linear methyl phenyl vinyl silicone oil, or linear ethyl vinyl silicone oil, also can be the mixture of above-mentioned silicone oil; Platinum content accounts for 0.1-5% in the ethylene methacrylic radical siloxane coordination platinum complex catalyst in the described catalyst component.
3. the two-component addition type room temperature vulcanized silicone rubber that is used to make impression of the hand mould and footprint mould according to claim 1 is characterized in that: be added with the pigment of metallic luster in the described basic component, select golden yellow, silvery white for use, bronze-colored pigment.
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