CN102276162B - Casting technology for protecting lamps - Google Patents
Casting technology for protecting lamps Download PDFInfo
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- CN102276162B CN102276162B CN 201110117724 CN201110117724A CN102276162B CN 102276162 B CN102276162 B CN 102276162B CN 201110117724 CN201110117724 CN 201110117724 CN 201110117724 A CN201110117724 A CN 201110117724A CN 102276162 B CN102276162 B CN 102276162B
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- light fixture
- protective membrane
- fluorescent tube
- epoxy
- pouring technology
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Abstract
The invention discloses a casting technology for protecting lamps, which aims at solving the problems of fragment scattering, inconvenience for cleaning, easiness in generation of accidents and mercury discharge after the rupture of a lamp tube. The casting technology mainly comprises the steps of: 1, firstly, manufacturing a die with a shape identical with the shape of the lamp tube of a lamp; 2, melting raw materials of a protecting film at 138 DEG C to 142 DEG C for 30 to 40 minutes and then injecting the melted raw materials into the die with the lamp tube of step 1; and 3, curing for 2 to 3 minutes and removing the die to form the protecting film with the thickness of 0.5 to 2mm on the surface of the lamp tube. The lamp tube of the lamp manufactured by the invention is not easy to crack; even if the lamp tube is cracked, because of the action of the protecting film, glass crisp pieces of the lamp tube are reserved in the protecting film without scattering outside; simultaneously, mercury in the lamp tube is also reserved in the protecting film without leakage, thus the environmental protection action and the safety action are effectively performed.
Description
Technical field
The present invention relates to the light fixture production technical field, particularly a kind of light fixture protection pouring technology.
Background technology
Light fixture refers to energy printing opacity, distribution and the photodistributed utensil of change light source, comprises being useful on whole zero, parts fixing and that the protection light source is required except light source, and is connected necessary circuit annex with power supply.
The fluorescent tube of light fixture breaks after (colliding/break), and the glass fragment of fluorescent tube can scatter a ground, clears up loaded down with trivial details, and glass fragment scratches cleaning person easily when cleaning, usually glass fragment is not easy to be cleaned out because area of dispersion is bigger, and there is potential safety hazard in residual glass fragment.In the time of the fluorescent tube fragmentation, the leakage that also can shed of the mercury in the fluorescent tube can work the mischief to environment, and mercury toxicity is bigger, and people's safety has also been caused certain threat.
Existing light fixture prevents that the measure commonly used that fluorescent tube breaks from being to add shield cap at fluorescent tube, and fluorescent tube is difficult for being broken up/breaking into pieces like this, but the protection of shield cap is not very effective, and fluorescent tube still more easily breaks, and still has the problems referred to above after fluorescent tube breaks.
The disclosure of the Invention of publication number CN1750217A a kind of coating liquid for protective film of cold cathode fluorescent lamp and compound method thereof, contain following composition by weight: 10～20 parts of γ phase alumina, 100 parts of analytical pure butylacetates, 110～240 parts of nitro-cotton glues.This coating liquid making method comprises the steps: at first, gets γ phase alumina and analytical pure butylacetate by the predetermined weight deal, both are mixed and stirs; Then, get the nitro-cotton glue by the predetermined weight deal, again it is mixed with the mixed solution of γ phase alumina with the analytical pure butylacetate, after stirring, be kept in the glassware stand-byly, the coating liquid that configures can directly be coated in the glass-tube inwall, because the γ phase alumina can be filled the slit between the glass-tube inwall molecule fully, thereby can effectively slow down the melanism of glass-tube glass and the generation of black sodium amalgam, reduce the fluorescent tube light decay, it is logical to keep fluorescent tube light.What this invention processing protective membrane adopted is coated technique, and the thoroughness of the protective membrane firmness of being combined with fluorescent tube and protective membrane covering is bad like this, and this protective membrane is positioned at fluorescent tube, can't protect when fluorescent tube is cracked that fragment scatters and the leaking of mercury.
Summary of the invention
The objective of the invention is to solve fluorescent tube break the back fragment be scattered; cleaning inconvenience, cause security incident and fluorescent tube to break easily problem that back mercury leaks provide a kind of light fixture protection pouring technology, by the light fixture after this processes; fluorescent tube is difficult for breaking; after even fluorescent tube breaks, because the protective membrane effect is retained in the protective membrane crisp of tube glass; can not spread the outside; mercury is also stayed in the protective membrane in the fluorescent tube simultaneously, can not leak, and effectively plays environmental protection, safety effect.
The present invention also provides a kind of light fixture protection pouring technology with protective membrane and light fixture with this protective membrane.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of light fixture protection pouring technology, described light fixture protection pouring technology may further comprise the steps:
Step 1: make the mould identical with the fluorescent tube profile of light fixture earlier, in the mould of then fluorescent tube being packed into;
Step 2: with the protective membrane raw material under 138 ℃ ~ 142 ℃ high temperature after fused 30 ~ 40 minutes implantation step 1 be equipped with in the mould of fluorescent tube, described protective membrane raw material is grouped into by following one-tenth by weight: paraffin 18 ~ 20%, modified epoxy 38 ~ 42%, polyether diamine 14 ~ 15%, two basic triamines 18 ~ 20%, silica gel 5 ~ 8%;
Step 3:2 ~ 3 minute curing back disengageding mould, surface of the light tube forms thickness at the protective membrane of 0.5 ~ 2mm.
Paraffin has fire retardation, has improved the resistance to elevated temperatures of protective membrane, is difficult for the fusing distortion like this when lamp hole temperature is higher.Modified epoxy plays adhesive effect.Polyether diamine is solidifying agent, can improve the toughness of protective membrane.Two basic triamines at high temperature have splendid water-soluble and thermostability, have improved the thermal stability of protective membrane.Silica gel has powerful adsorption, can adsorb the moisture of sealing quickly and effectively, can the illumination performance of light fixture not exerted an influence like this, and the silica gel chemical property is stable, nontoxic.
As preferably, the modified epoxy described in the step 2 is mixed and made into by following composition by weight: Resins, epoxy 48 ~ 53%, base polyurethane prepolymer for use as 18 ~ 20%, Dyhard RU 100 8 ~ 10%, 4,4'-diamines ditolylmethane 9 ~ 10%, 4,4'-, two amidos-3,3'-xylene dichloride methylmethane 10 ~ 12%.Resins, epoxy has many advantages, as the chemical stability of excellence, and erosion resistance, electrical apparatus insulation and shrinking percentage are low, easy machine-shaping etc.Yet because cross-linking density height behind the single epoxy resin cure is tridimensional network, exist internal stress big, matter is crisp, poor impact resistance, and shortcomings such as easy cracking are difficult to satisfy the engineering requirement, make its application be subjected to certain restriction.For a long time, Resins, epoxy is carried out toughening modifying is an important research contents always.Base polyurethane prepolymer for use as is the macromolecular material of a class excellent property, have high impact strength and excellent resistance to low temperature, with the base polyurethane prepolymer for use as modified epoxy both are had complementary advantages, obtain a kind of more satisfactory tackiness agent that had not only had certain snappiness but also had fine cohesive strength.Modified epoxy is made by these 5 kinds of composition rational proportions, and tensile strength and shock strength are good, tenacity excellent.
The preparation process of modified epoxy is: Resins, epoxy, base polyurethane prepolymer for use as, Dyhard RU 100,4,4'-diamines ditolylmethane and 4,4'-two amidos-3,3'-xylene dichloride methylmethane is to react 1.5 ~ 2.5 hours under the condition of catalyzer at trimeric cyanamide, temperature of reaction is at 150～160 ℃, 140～150 ℃ of following underpressure distillation 1.5 ~ 2.5 hours, get modified epoxy then.
As preferably, described base polyurethane prepolymer for use as is the hydroxyl-terminated polyurethane performed polymer.The performed polymer that has hydroxyl end groups is called the hydroxyl-terminated polyurethane performed polymer, and its reactive behavior is general, and storage period is longer, makes tackiness agent host usually and uses.
As preferably, described Resins, epoxy is the glycidyl ester based epoxy resin.Glycidyl ester based epoxy resin and diphenylol propane epoxidation resin compare, and it is low that it has viscosity, use good manufacturability, reactive behavior height; Bounding force is than universal epoxy resin height, and the cured article mechanical property is good; Electrical insulating property is good; Weathering resistance is good, and has good anti-ultralow warm nature, under condition of ultralow temperature, still has the cohesive strength higher than other type of epoxy resin.Surface gloss is preferably arranged, and light transmission, weathering resistance are good.
As preferably, the transmittance of described protective membrane is greater than 90%.The transmittance height of protective membrane can not influence the illumination performance of fluorescent tube like this.
A kind of light fixture protection pouring technology protective membrane, described protective membrane is mixed and made into by following composition by weight: paraffin 18 ~ 20%, modified epoxy 38 ~ 42%, polyether diamine 14 ~ 15%, two basic triamines 18 ~ 20%, silica gel 5 ~ 8%.
As preferably, described modified epoxy is mixed and made into by following composition by weight: Resins, epoxy 48 ~ 53%, base polyurethane prepolymer for use as 18 ~ 20%, Dyhard RU 100 8 ~ 10%, 4,4'-diamines ditolylmethane 9 ~ 10%, 4,4'-, two amidos-3,3'-xylene dichloride methylmethane 10 ~ 12%.
As preferably, described base polyurethane prepolymer for use as is the hydroxyl-terminated polyurethane performed polymer.
As preferably, described Resins, epoxy is the glycidyl ester based epoxy resin.
A kind of light fixture with protective membrane that adopts described light fixture protection pouring technology to make.
The invention has the beneficial effects as follows:
1, production cost is low, and production technique is simple;
2, by the light fixture of processes of the present invention, fluorescent tube is difficult for breaking, even after fluorescent tube breaks; because the protective membrane effect is retained in the protective membrane crisp of tube glass, can not spread the outside; mercury is also stayed in the protective membrane in the fluorescent tube simultaneously, can not leak, and effectively plays environmental protection, safety effect.
3, the light transmission of protective membrane is good, does not influence lamp lighting; Protective membrane toughness, resistance to elevated temperatures are good.
Description of drawings
Fig. 1 is the sectional structure synoptic diagram of a kind of light fixture of making of technology of the present invention;
Fig. 2 is the sectional structure synoptic diagram of the another kind of light fixture that makes of technology of the present invention.
Among the figure: 1, lamp holder, 2, fluorescent tube, 3, protective membrane.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1:
A kind of light fixture protection pouring technology, described light fixture protection pouring technology may further comprise the steps:
Step 1: make the mould identical with the fluorescent tube profile of light fixture earlier, in the mould of then fluorescent tube being packed into;
Step 2: with paraffin 18kg, modified epoxy 42 kg, polyether diamine 15 kg, two basic triamine 20 kg and silica gel 5 kg under 138 ℃ of high temperature after fused 40 minutes implantation step 1 be equipped with in the mould of fluorescent tube, the proportioning of modified epoxy sees Table 1;
Solidified the back disengageding mould in step 3:2 minute, it is the protective membrane of 0.5mm that surface of the light tube forms thickness.
Embodiment 2:
A kind of light fixture protection pouring technology, described light fixture protection pouring technology may further comprise the steps:
Step 1: make the mould identical with the fluorescent tube profile of light fixture earlier, in the mould of then fluorescent tube being packed into;
Step 2: just paraffin 20kg, modified epoxy 38 kg, polyether diamine 14 kg, two basic triamine 20 kg and silica gel 8 kg under 142 ℃ of high temperature fused after 30 minutes implantation step 1 be equipped with in the mould of fluorescent tube, the proportioning of modified epoxy sees Table 1;
Solidified the back disengageding mould in step 3:3 minute, it is the protective membrane of 2mm that surface of the light tube forms thickness.
Embodiment 3:
A kind of light fixture protection pouring technology, described light fixture protection pouring technology may further comprise the steps:
Step 1: make the mould identical with the fluorescent tube profile of light fixture earlier, in the mould of then fluorescent tube being packed into;
Step 2: with paraffin 20kg, modified epoxy 40 kg, polyether diamine 15 kg, two basic triamine 18 kg and silica gel 7 kg under 140 ℃ of high temperature after fused 35 minutes implantation step 1 be equipped with in the mould of fluorescent tube, the proportioning of modified epoxy sees Table 1;
Solidified the back disengageding mould in step 3:2.5 minute, it is the protective membrane of 1mm that surface of the light tube forms thickness.
See accompanying drawing 1, accompanying drawing 2 by the fitting structure that technology of the present invention makes, light fixture is made up of lamp holder 1, fluorescent tube 2, and fluorescent tube 2 is coated with protective membrane 3.
The set of dispense of table 1 modified epoxy is reaction conditions when
The outer protective membrane of the light fixture fluorescent tube that technology of the present invention makes is transparent, and transmittance is up to more than 90%, the 110 ℃ of high temperature of high energy tolerance of protective membrane, reach fully fluorescent tube high temperature resistant/the well-illuminated performance requriements of high light.Because the protective membrane effect can guarantee that fluorescent tube falls glass fragment from 2.5 meters eminences and can not spread outside the protective membrane, the mercury in the fluorescent tube is also stayed in the protective membrane simultaneously.The present invention mainly plays the safety and environmental protection effect, is conducive to fluorescent tube simultaneously and reclaims, and the protective membrane material price is cheap, and pouring technology is simple.
Above-described embodiment is a kind of preferable scheme of the present invention, is not that the present invention is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (8)
1. a light fixture protects pouring technology, it is characterized in that: described light fixture protection pouring technology may further comprise the steps:
Step 1: make the mould identical with the fluorescent tube profile of light fixture earlier, in the mould of then fluorescent tube being packed into;
Step 2: with the protective membrane raw material under 138 ℃ ~ 142 ℃ high temperature after fused 30 ~ 40 minutes implantation step 1 be equipped with in the mould of fluorescent tube, described protective membrane raw material is grouped into by following one-tenth by weight: paraffin 18 ~ 20%, modified epoxy 38 ~ 42%, polyether diamine 14 ~ 15%, two basic triamines 18 ~ 20%, silica gel 5 ~ 8%; Described modified epoxy is mixed and made into by following composition by weight: Resins, epoxy 48 ~ 53%, base polyurethane prepolymer for use as 18 ~ 20%, Dyhard RU 100 8 ~ 10%, 4,4'-diamines ditolylmethane 9 ~ 10%, 4,4'-two amidos-3,3'-xylene dichloride methylmethane 10 ~ 12%;
Step 3:2 ~ 3 minute curing back disengageding mould, surface of the light tube forms thickness at the protective membrane of 0.5 ~ 2mm.
2. light fixture according to claim 1 protects pouring technology, and it is characterized in that: described base polyurethane prepolymer for use as is the hydroxyl-terminated polyurethane performed polymer.
3. light fixture according to claim 1 protects pouring technology, and it is characterized in that: described Resins, epoxy is the glycidyl ester based epoxy resin.
4. according to claim 1 or 2 or 3 described light fixture protection pouring technologies, it is characterized in that: the transmittance of described protective membrane is greater than 90%.
5. a light fixture protects the pouring technology protective membrane, and it is characterized in that: described protective membrane is mixed and made into by following composition by weight: paraffin 18 ~ 20%, modified epoxy 38 ~ 42%, polyether diamine 14 ~ 15%, two basic triamines 18 ~ 20%, silica gel 5 ~ 8%; Described modified epoxy is mixed and made into by following composition by weight: Resins, epoxy 48 ~ 53%, base polyurethane prepolymer for use as 18 ~ 20%, Dyhard RU 100 8 ~ 10%, 4,4'-diamines ditolylmethane 9 ~ 10%, 4,4'-two amidos-3,3'-xylene dichloride methylmethane 10 ~ 12%.
6. light fixture according to claim 5 protects the pouring technology protective membrane, and it is characterized in that: described base polyurethane prepolymer for use as is the hydroxyl-terminated polyurethane performed polymer.
7. light fixture according to claim 5 protects the pouring technology protective membrane, and it is characterized in that: described Resins, epoxy is the glycidyl ester based epoxy resin.
8. a light fixture as claimed in claim 1 protects the light fixture with protective membrane that pouring technology makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110117724 CN102276162B (en) | 2011-05-09 | 2011-05-09 | Casting technology for protecting lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110117724 CN102276162B (en) | 2011-05-09 | 2011-05-09 | Casting technology for protecting lamps |
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| Publication Number | Publication Date |
|---|---|
| CN102276162A CN102276162A (en) | 2011-12-14 |
| CN102276162B true CN102276162B (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110117724 Expired - Fee Related CN102276162B (en) | 2011-05-09 | 2011-05-09 | Casting technology for protecting lamps |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054389C (en) * | 1995-12-15 | 2000-07-12 | 中国人民解放军海军后勤技术装备研究所 | Fire-retardant, electrostatic-conducting, heat-resisting and anticorrosive paint |
| CN1162819C (en) * | 2002-04-26 | 2004-08-18 | 潘二保 | Process for producing integrated energy saving neon lamp |
| CN1962752B (en) * | 2005-11-07 | 2010-05-05 | 中国科学院化学研究所 | Epoxy plastic packaging material and its preparation method |
| CN101173159B (en) * | 2006-11-02 | 2010-12-08 | 比亚迪股份有限公司 | A kind of epoxy resin packaging material composition |
| CN201448756U (en) * | 2009-05-25 | 2010-05-05 | 宿迁市嘉润照明有限公司 | Anti-broken lamp bulb and strip lamp |
| CN101724368B (en) * | 2009-11-24 | 2013-03-27 | 烟台德邦科技有限公司 | Anti-impact epoxy structural rubber and preparation method thereof |
| CN101724340A (en) * | 2009-12-21 | 2010-06-09 | 李苏辉 | Method for producing anti-shatter coating for glass and application method thereof |
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