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Filler resin composition for adjusting high backing plate by filling and preparation method

A filling resin and filling technology, which is applied in the field of resin composition and preparation, can solve the problems of poor toughness of cured products, large curing shrinkage rate of unsaturated polyester resin, low impact strength, low elongation at break, etc., and achieve low viscosity , good mechanical strength and toughness, simple operation

Inactive Publication Date: 2009-02-11
CHANGSHU JIAFA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the conventional unsaturated polyester resin prepared by the reaction of phthalic acid (anhydride), maleic anhydride and polyol ester, and styrene as a reactive diluent monomer has a large curing shrinkage rate, poor toughness of the cured product, impact strength, and elongation at break. The elongation rate is low, which cannot well meet the high toughness requirements of the filled backing plate for precise height adjustment of the rail surface and long-term operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In a 1-liter reactor, put 100 g of bisphenol F glycidyl ether type epoxy resin (NPEF-170), 20 g of glycidyl ether type flexible epoxy resin (DOW CEMIACAL DER732), hexanediol glycidyl ether type epoxy resin Resin reactive diluent (Changshu Jiafa Chemical Co., Ltd. JX-025) 10g, silica filler HGH1000 20g, defoamer A-530 (Bick Chemical, Germany) 0.1g, coupling agent KH-560 1g, at a speed of 100 ~200 rpm, stirring at 25~40°C for 1 hour to obtain the main ingredient.

[0034] Add 146g of triethylenetetramine into a 1-liter three-necked flask, stir and heat up to 60-80°C, add 160g of butyl glycidyl ether (BGE) dropwise, keep the reaction for 3-5 hours, defoam at -0.1MPa, and obtain solidification agent.

Embodiment 2

[0036] In 1 liter of reactor, drop into bisphenol A glycidyl ether type epoxy resin E-51 100g, tetrahydrophthalate glycidyl ester type epoxy resin (711) 20g, neopentyl glycol diglycidyl ether type Epoxy resin reactive diluent (Changshu Jiafa Chemical Co., Ltd. JX-022) 10g, silica filler HGH400 20g, defoamer A-530 (Germany BYK Chemicals) 0.1g, coupling agent KH-560 1g, in Rotate at 100-200 rpm, stir at 25-40°C for 1 hour to obtain the main ingredient.

[0037] Curing agent is with embodiment 1.

Embodiment 3

[0039] Add 300g of bisphenol A type epoxy resin (E-51) and 45g of carboxy-terminated nitrile rubber with a molecular weight of 1500-20 into a 1-liter three-necked flask, stir and heat up to 120-150°C, maintain the reaction for 2-3 hours, and add 1 , 4 butanediol glycidyl ether (Changshu Jiafa Chemical Co., Ltd. JX-024) 60g, cooled and discharged to obtain the main material of modified epoxy resin, the test epoxy equivalent is 190g / mol, viscosity 5000mpa.s25 ℃.

[0040] Add 66g of m-xylylenediamine, 146g of triethylenetetramine, and 93g of phenol into a 1-liter three-necked flask, stir and heat up to 50-80°C, add dropwise 85g of 36% formaldehyde aqueous solution, isooctyl glycidyl ether (Changshu Jiafa Chemical Co., Ltd. JX-014) 116g, maintain the reaction for 3 to 5 hours, heat up to 90-100°C, dehydrate at -0.Mpa, cool down to 50°C, add 100g of benzyl alcohol, polyethertriamine T-403 (HUSTMAN) 100g, in Degassing at -0.1MPa, stirring evenly and discharging to obtain curing agen...

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Abstract

The invention provides a padding resin compound of a filling type height-adjustment pad, which is characterized in that the prescription of the compound includes a main material, a firming agent and an accelerant; the prescription of the main material includes the following components counted in weight portions: 100 portions of epoxide resin, modified epoxide resin or epoxy modified vinylit resin, 0 to 100 portions of padding, 0 to 100 portions of reactive diluents, 0 to 50 portions of tougheners, 0 to 1 portion of foam killer and 0 to 5 portions of resin acceptors; besides, the weight ratio of the main material, the firming agent and the accelerant is 100: 0.5 to 100 : 0 to 10. The compound has the advantages of low viscosity, excellent operation technique as well as excellent mechanical intensity and toughness; the compound is a better filling material for the filling height-adjustment pad of the existing railway plate unballasted tracks; besides, the preparation method of the compound is simply operated and is easy for industrialization.

Description

technical field [0001] The invention relates to a resin composition and a preparation method, in particular to a filling resin composition and a preparation method of a filling-type height adjustment backing plate. Background technique [0002] In order to accurately adjust the height of the rail surface during the track laying process of the railway slab ballastless track, to ensure the smoothness of the rail surface, and to reduce the vibration of the train during operation, the use of a fixed-height backing plate support often cannot meet the requirements for accurate height adjustment, and it is necessary to use A liquid resin and reinforcement are poured and filled at the construction site to realize stepless height adjustment of the rail surface. [0003] CN02224849.8 discloses a filling pad using unsaturated polyester resin as the filling material, but does not describe the characteristics and preparation method of the unsaturated polyester resin used. At present, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08K3/36C08K5/54C08G59/50C08L63/00C08F290/06C08F2/44C08K3/34C08K3/22C08K3/26E01B9/68
Inventor 梁平辉
Owner CHANGSHU JIAFA CHEM
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