CN103613910B - A kind of material for the preparation of long lifetime salt-fog test equipment box and preparation method - Google Patents
A kind of material for the preparation of long lifetime salt-fog test equipment box and preparation method Download PDFInfo
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- CN103613910B CN103613910B CN201310624242.3A CN201310624242A CN103613910B CN 103613910 B CN103613910 B CN 103613910B CN 201310624242 A CN201310624242 A CN 201310624242A CN 103613910 B CN103613910 B CN 103613910B
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Abstract
The invention provides a kind of material for the preparation of long lifetime salt-fog test equipment box, it is characterized in that the batching comprising following composition by weight: phenol formaldehyde epoxy vinyl ester resin 100 parts; Mineral filler 150 ~ 230 parts; Initiator 0.8 ~ 1.5 part; Releasing agent 0.5 ~ 1.5 part; Thickening material 0.8 ~ 1.4 part; Process auxiliaries 1.8 ~ 2.5 parts; Salt spray resistance nanometer additive 8 ~ 12 parts; Account for the alkali-free short glass fiber of compound total amount 15 ~ 20%.The invention has the beneficial effects as follows: tank material of the present invention possesses alternative import PVC, PP sheet material of the etch-proof ability of superior salt spray resistance; Disposal pressed moulding, ensure that equipment box sealing, ne-leakage.
Description
Technical field
The present invention relates to plastic box and manufacture field, particularly a kind of material for the preparation of long lifetime salt-fog test equipment box and prepare the method for this casing.
Background technology
The casing of salt-fog test equipment general at present: mostly select the plastic plates such as import rigid polyvinyl chloride (PVC), polypropylene (PP), carbonate synthesis (PC) shaping through hot press moulding, again through operations such as plane, milling, mills, final high temperature is welded, and general tolerable temperature is all at about 70 DEG C.This kind of boxboard be made up of thermoplastics, under the repeated stock of long-term temperature change, can cause early stage thermal stress fatigue and lose efficacy.And common thermosetting resin on average all can work under the long term high temperature of 120 DEG C, if through special modification selection, both improved the corrosion resistant ability in salt mist environment, and higher intensity can have been kept under the impact of temperature variation repeatedly again.This is the problem that salt-spray cabinet body manufacturing firm is endeavouring to seek to solve always.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of for the preparation of long-life not only etch-proof tank material of salt spray resistance that is high temperature resistant but also tool high strength.For making the casing of salt-fog test equipment, and the sheet materials such as the alternative hard PVC from external import costliness.
For achieving the above object, technical scheme of the present invention is as follows: novel casing material is by the high-performance pnenolic aldehyde epoxy vinyl ester resin containing lower shrinkage (profile) additive, mineral filler, initiator, releasing agent, thickening material, salt spray resistance nanometer additive and alkali-free short glass fiber, the Bulk Molding Compound of mixing according to a certain percentage, again through the box shape at high temperature under high pressure needed for once shaped, without the need to follow-up supplementary processing.
Preferably, described phenol formaldehyde epoxy vinyl ester resin is the high-performance pnenolic aldehyde epoxy vinyl ester resin of MFE757 namely containing lower shrinkage (profile) additive.
Preferably, described mineral filler be respectively 350 orders by particle diameter, water-ground limestone that 800 orders, 1200 object calcium carbonate powderss obtain by 1:0.6:0.3 mixture.
Preferably, described initiator is peroxidized t-butyl perbenzoate (TBPB).
Preferably, described releasing agent is Zinic stearas.
Preferably, described thickening material is calcium hydroxide or magnesium oxide.
Preferably, described process auxiliaries is the additive that BYK-P9050 has that demoulding functions reduces mist shadow.
Preferably, described salt spray resistance nanometer additive is the ZT-719 additive adopting special technique to refine by multiple nano material, its pH value (aqueous solution of 10%) 7.5 ~ 8.5, median size 4 ~ 6 μ, tap density 2.2 ~ 2.4 g/cm3, water capacity thing≤0.3%, oil number (g/100g)≤20%, bright vector≤0.5%.
Preferably, described alkali-free short glass fiber length is 6mm, diameter 13 μ.
The present invention also provides a kind of method preparing long lifetime salt-fog test equipment box, comprises the following steps:
A) powder body material in aforementioned batching is mixed 6 ~ 8 minutes in V-shaped dry powder mixer, then proceed in Sigama kneader;
B) dropped into by the liquid components in aforementioned batching in the tempering tank of high speed hollander, strong stirring injected Sigama kneader after 10 ~ 16 minutes;
C) after powder body material and fluent material mix 25 ~ 30 minutes continuously in Sigama kneader, then drop into glass fibre, stir discharging after 4 ~ 6 minutes, obtain the moulding compound treating slaking;
D) above-mentioned moulding compound is dropped in the mould being heated to 140 ~ 160 DEG C after weighing as required after slaking, press forming.
The invention has the beneficial effects as follows:
1, tank material of the present invention possesses the etch-proof ability of superior salt spray resistance, the sheet material test piece made of the present invention and conventional import PVC, PP sheet material test piece, be placed in same salt-fog test environment, tested 20 months continuously, add up to reach 1600h, test piece of the present invention remains unchanged maintenance 10 grades of surface grade, and surface crack has appearred in PVC, PP plate of synchronism detection;
2, alternative import PVC, PP sheet material of tank material of the present invention;
3. casing of the present invention adopts moulding compound disposal pressed moulding, ensure that equipment box seals, ne-leakage hidden danger, to carry out cutting unlike PVC, PP plate, swaging, machining, finally also must the multiple tracks post-treatment operation such as high-temperature soldering, not only take a lot of work, the cycle is long, and easily leave processing hidden danger.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described
embodiment one
Take the batching of following weight part:
Phenol formaldehyde epoxy vinyl ester resin 100 parts
Mineral filler 150 ~ 230 parts
Initiator 0.8 ~ 1.5 part
Releasing agent 0.5 ~ 1.5 part
Thickening material 0.8 ~ 1.4 part
Process auxiliaries 1.8 ~ 2.5 parts
Salt spray resistance nanometer additive 8 ~ 12 parts
15 ~ 20% of alkali-free short glass fiber compound total amount.Wherein mineral filler can be calcium carbonate or talcum powder or kaolin, and thickening material can be calcium hydroxide or magnesium oxide, and initiator, releasing agent, salt spray resistance nanometer additive adopt the commercially available respective material in market.
Long lifetime, salt-fog test equipment box preparation method was as follows: the powder body material in above-mentioned batching is first mixed 6 ~ 8 minutes in V-shaped dry powder mixer, then proceeds in Sigama kneader;
Then dropped into by the liquid components in batching in the tempering tank of high speed hollander, strong stirring also injected Sigama kneader after 10 ~ 16 minutes;
After powder and liquid material mix 25 ~ 30 minutes continuously in Sigama kneader, more successively drop into glass fibre, then stir 4 ~ 6 minutes, i.e. turning discharging, load in sealing bag for subsequent use;
Above-mentioned moulding compound is dropped in the mould being heated to 140 ~ 150 DEG C after weighing as required after slaking, by relevant processing parameter matched moulds, is pressed into required box parts.
Owing to have employed phenol formaldehyde epoxy vinyl ester resin, casing salt spray resistance significantly improves.The sheet material test piece that the present invention makes and conventional import PVC, PP sheet material test piece, be placed in same salt-fog test environment, tested 20 months continuously, add up to reach 1600h, test piece of the present invention remains unchanged maintenance 10 grades of surface grade, and PVC, PP plate of synchronism detection occurs surface crack.
embodiment two
In the present embodiment, mineral filler be respectively 350 orders by particle diameter, water-ground limestone that 800 orders, 1200 object calcium carbonate powderss obtain by 1:0.6:0.3 mixture, mineral filler adopts the grating of variable grain diameter, has very large benefit to the degree of compactness and apparent mass improving goods.Initiator is peroxidized t-butyl perbenzoate (TBPB).Releasing agent is Zinic stearas.
The thickening material of the present embodiment is calcium hydroxide, add thickening material, it is the state that the viscoelastic physical efficiency of wishing through the fully mixed homogeneous phase of kneader keeps its homogeneous, homogeneous phase substantially, be not separated, more do not wish that liquid resin is separated out, and wish that giving batch mixing therebetween in shaping flowing can also flow together with glass, is full of each position of die cavity.When temperature is lower, magnesium oxide MgO can be selected, to reach the object of quick multiviscosisty.
Choose 37.9kg (100 parts) MFE757 phenol formaldehyde epoxy vinyl ester resin, the calcium carbonate of 75.8kg (200 parts) mixture, 379g (1.0 parts) TBPB, 568.5g (1.0 parts) calcium hydroxide, 758g (2.0 parts) BYK-P9050,3.79kg (10 parts) ZT-719 and 27kg chopped glass fiber, stand-by.
Powder body material in above-mentioned batching is first mixed 6 ~ 8 minutes in V-shaped dry powder mixer, then proceeds in Sigama kneader;
Then dropped into by the liquid components in batching in the tempering tank of high speed hollander, strong stirring also injected Sigama kneader after 10 ~ 16 minutes;
After powder and liquid material mix 25 ~ 30 minutes continuously in Sigama kneader, more successively drop into glass fibre, then stir 4 ~ 6 minutes, i.e. turning discharging, load in sealing bag for subsequent use;
Above-mentioned moulding compound is dropped in the mould being heated to 140 ~ 150 DEG C after weighing as required after slaking, by relevant processing parameter matched moulds, is pressed into required box parts.
embodiment three
In the present embodiment, process auxiliaries is the additive that BYK-P9050 has that demoulding functions reduces mist shadow.
The salt spray resistance nanometer additive of the present embodiment is the ZT-719 additive adopting special technique to refine by multiple nano material, its pH value (aqueous solution of 10%) 7.5 ~ 8.5, median size 4 ~ 6 μ, tap density 2.2 ~ 2.4 g/cm3, water capacity thing≤0.3%, oil number (g/100g)≤20%, bright vector≤0.5%.Alkali-free short glass fiber length is 6mm, diameter 13 μ.
Choose 10kg (100 parts) MFE757 phenol formaldehyde epoxy vinyl ester resin, the calcium carbonate of 15kg (150 parts) mixture, 150g (1.5 parts) TBPB, 80g (0.8 part) calcium hydroxide, 180g (1.8 parts) BYK-P9050,80g (8 parts) ZT-719 and 4.5kg chopped glass fiber, stand-by.
Powder body material in above-mentioned batching is first mixed 6 ~ 8 minutes in V-shaped dry powder mixer, then proceeds in Sigama kneader;
Then dropped into by the liquid components in batching in the tempering tank of high speed hollander, strong stirring also injected Sigama kneader after 10 ~ 16 minutes;
After powder and liquid material mix 25 ~ 30 minutes continuously in Sigama kneader, more successively drop into glass fibre, then stir 4 ~ 6 minutes, i.e. turning discharging, load in sealing bag for subsequent use;
Above-mentioned moulding compound is dropped into after slaking in the holding bin of BMC injection moulding machine, by the processing parameter of injection moulding machine by setting, be automatically injected in the mould of 150 ~ 160 DEG C, make required salt-fog chamber's rack part.
embodiment four
Choose the MFE757 phenol formaldehyde epoxy vinyl ester resin of weight part 100 parts, the calcium carbonate of the mixture of 230 parts, the TBPB of 0.8 part, 1.4 parts of calcium hydroxides, the BYK-P9050 of 2.5 parts, the ZT-719 of 12 parts and the chopped glass fiber of gross weight 25%, stand-by.
Powder body material in above-mentioned batching is first mixed 6 ~ 8 minutes in V-shaped dry powder mixer, then proceeds in Sigama kneader;
Then dropped into by the liquid components in batching in the tempering tank of high speed hollander, strong stirring also injected Sigama kneader after 10 ~ 16 minutes;
Powder and liquid material be in Sigama kneader continuously mixing after 25 ~ 30 minutes, more successively drop into glass fibre, then stir 4 ~ 6 minutes, i.e. turning discharging, loads in sealing bag for subsequent use;
Above-mentioned moulding compound is dropped into after slaking in the holding bin of BMC injection moulding machine, by the processing parameter of injection moulding machine by setting, be automatically injected in the mould of 150 ~ 160 DEG C, make required salt-fog test equipment box.
Although the present invention is described by reference to preferred embodiment, those of ordinary skill in the art should understand, and can be not limited to the description of the present embodiment, in the scope of claims, can make the various changes in form and details.
Claims (8)
1., for the preparation of a material for long lifetime salt-fog test equipment box, it is characterized in that the batching comprising following composition by weight:
Phenol formaldehyde epoxy vinyl ester resin 100 parts
Mineral filler 150 ~ 230 parts
Initiator 0.8 ~ 1.5 part
Releasing agent 0.5 ~ 1.5 part
Thickening material 0.8 ~ 1.4 part
Process auxiliaries 1.8 ~ 2.5 parts
Salt spray resistance nanometer additive 8 ~ 12 parts
15 ~ 20% of alkali-free short glass fiber compound total amount.
2., according to a kind of material for the preparation of long lifetime salt-fog test equipment box described in claim 1, it is characterized in that described phenol formaldehyde epoxy vinyl ester resin is MFE757.
3. according to a kind of material for the preparation of long lifetime salt-fog test equipment box described in claim 1, it is characterized in that described mineral filler be respectively 350 orders by particle diameter, water-ground limestone that 800 orders, 1200 object calcium carbonate powderss obtain by 1: 0.6: 0.3 mixture.
4., according to a kind of material for the preparation of long lifetime salt-fog test equipment box described in claim 1, it is characterized in that described initiator is peroxidized t-butyl perbenzoate (TBPB).
5., according to a kind of material for the preparation of long lifetime salt-fog test equipment box described in claim 1, it is characterized in that described releasing agent is Zinic stearas.
6., according to a kind of material for the preparation of long lifetime salt-fog test equipment box described in claim 1, it is characterized in that described thickening material is calcium hydroxide or magnesium oxide.
7., according to a kind of material for the preparation of long lifetime salt-fog test equipment box described in claim 1, it is characterized in that described process auxiliaries is BYK-P9050.
8. prepare a method for long lifetime salt-fog test equipment box, it is characterized in that comprising the following steps:
A) powder body material in claim 1 being prepared burden mixes 6 ~ 8 minutes in V font dry powder mixer, then proceeds in Sigama kneader;
B) liquid components in claim 1 being prepared burden drops in the tempering tank of high speed hollander, and strong stirring injected Sigama kneader after 10 ~ 16 minutes;
C) after powder body material and fluent material mix 25 ~ 30 minutes continuously in Sigama kneader, then drop into glass fibre, stir discharging after 4 ~ 6 minutes, obtain the moulding compound treating slaking;
D) above-mentioned moulding compound is dropped in the mould being heated to 140 ~ 160 DEG C after weighing as required after slaking, press forming.
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| CN104017384A (en) * | 2014-06-20 | 2014-09-03 | 江苏兆鋆新材料股份有限公司 | High-compression strength bulk molding compound and production method thereof |
| CN104987674B (en) * | 2015-06-05 | 2018-05-15 | 东莞市联洲知识产权运营管理有限公司 | A kind of sea water resistance vinyl ester composites and preparation method thereof |
| CN106848566B (en) * | 2017-03-20 | 2023-07-25 | 杭州利安新材料技术有限公司 | Glass fiber reinforced plastic antenna housing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514206A (en) * | 2011-12-07 | 2012-06-27 | 长春工业大学 | Production method of phenol formaldehyde epoxy vinyl ester resin/carbon fiber composite material |
| CN103183931A (en) * | 2011-12-27 | 2013-07-03 | 常熟市亚美模特儿衣架有限公司 | Phenolic epoxy glass fibre reinforced plastic forming material |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514206A (en) * | 2011-12-07 | 2012-06-27 | 长春工业大学 | Production method of phenol formaldehyde epoxy vinyl ester resin/carbon fiber composite material |
| CN103183931A (en) * | 2011-12-27 | 2013-07-03 | 常熟市亚美模特儿衣架有限公司 | Phenolic epoxy glass fibre reinforced plastic forming material |
Non-Patent Citations (1)
| Title |
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| 酚醛环氧乙烯基酯树脂碳纤维复合材料的;生健;《应用化工》;20120430;第41卷(第4期);第736-738页 * |
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