CN106589697A - Specific PVC pipe for nano-silica added high heat-resisting and impact-resisting coal mine well and preparation method thereof - Google Patents

Abstract

The invention discloses a specific PVC pipe for a nano-silica added high heat-resisting and impact-resisting coal mine well. The specific PVC pipe is prepared from, by weight, 100 parts of PVC resin, 12-14 parts of coumarone resin, 14.9-15.9 parts of glass fiber, 2-3 parts of nano-silica, 19-22 parts of brucite powder, 3-4 parts of glycerol triacetate, 3.6-4.1 parts of gadolinium oxide, 6-8 parts of low-carbon steel fiber, 0.5-0.8 part of dipotassium glycyrrhizinate, 5-7 parts of amino silane, 2.2-2.5 parts of chlorinated paraffin, and proper amount of water. In the invention, gadolinium oxide is coupled and coated at the surface of glass fiber through amino silane and used as reinforcing material, the brucite powder is modified to be modified filler through nano-silica and low-carbon steel fiber; then the other effective auxiliaries are added, thus the PVC pipe is prepared; the PVC pipe is excellent in both heat resistance and impact resistance in the coal mine well, and easy to process.

Description

A kind of coal mine special PVC pipe of the addition high heat-proof impact-resistant of nano silicon and its Preparation method

Technical field

The present invention relates to PVC and preparation method thereof technical field, more particularly to a kind of addition nano silicon height Coal mine special PVC pipe of heat-proof impact-resistant and preparation method thereof.

Background technology

Polyvinyl chloride（PVC）Resin be thermoplastic resin most widely used in our daily lifes, that consumption is maximum it One, it has lightweight, good insulating, difficult to burn, strong mechanical performance, cheap, abundant raw material source, manufacturing process maturation etc. Feature, thus be used widely in the fields such as coal mine pipes for mining material.However, its rushing of also having that some are difficult to overcome Hit poor performance, the shortcomings of heat endurance is not good enough, in order to overcome many scholars of the disadvantages described above of polyvinyl chloride in PVC toughening modifying sides Face has carried out substantial amounts of research, and current glass fibre has been progressed in the visual field of PVC study on the modification persons, such as document《Glass The preparation of fiber/polyvinyl chloride composite materials and performance study》Glass fibre/PVC is prepared for using injection molding method（Polychlorostyrene second Alkene）Composite.Result of study shows：When shaping penetrate pressure for 130MPa, pressurize be 100MPa, back pressure be 0.5MPa, shaping temperature It is 100 DEG C and w to spend for 420 DEG C, mold temperature（Glass fibre）=15%（For composite quality）When, composite Combination property it is relatively best, its tensile strength（77.4MPa）And shear strength（57.4MPa）Relative maximum, and product table The smooth color in face is normal, and the pure PVC of bending strength ratio improves 68.4%.

It is well known that colliery is a special operating environment, dark, moist, narrow space has falling rocks sometimes, this Being accomplished by PVC will not only have enough impact strengths, also there is the property such as antistatic, fire-retardant, wear-resisting, antibacterial, anti-corrosive properties Energy.Yet with polyvinyl chloride high-insulation, its sheet resistance is up to 1014 Ω or so, and this insulating properties usually make polychlorostyrene second Alkene manufactured goods produce electrostatic and easily cause blast accident during production, accumulating, use, and do not carry out in document antistatic It is modified, in addition due to glass fibre and polyvinyl chloride poor compatibility, the shock resistance of obtained polyvinyl chloride composite materials in document Property, shear strength, tensile strength etc. cannot meet the technical indicator of coal mine pipes for mining requirement, and wear-resisting, antibacterial, anti-corrosive properties compared with Difference, disadvantages described above limits popularization and application of the polyvinyl chloride in underground coal mine.To improve disadvantages described above, need to existing production work Skill and formula rate are improved, and have the advantages that tensile strength is high, antistatic, wear-resisting, Antimicrobial preservative is ageing-resistant to prepare The mining effective modified polyvinyl chloride of underground coal mine.

The content of the invention

The object of the invention is exactly to make up the defect of prior art, there is provided the high heat-resistant of one kind addition nano silicon Coal mine special PVC pipe of punching and preparation method thereof.

The present invention is achieved by the following technical solutions：

A kind of coal mine special PVC pipe for adding the high heat-proof impact-resistant of nano silicon, is prepared by the raw materials in： It is polyvinyl chloride resin 100, coumarone indene resin 12-14, glass fibre 14.9-15.9, nano silicon 2-3, brucite powder 19-22, sweet Oily triacetate 3-4, gadolinium oxide 3.6-4.1, low-carbon (LC) steel fibre 6-8, dipotassium glycyrrhizinate 0.5-0.8, amino silane 5-7, chlorination Paraffin 2.2-2.5, appropriate amount of water.

A kind of preparation method of the coal mine special PVC pipe of the described high heat-proof impact-resistant of addition nano silicon, including Following steps：

（1）Gadolinium oxide, amino silane are scattered in suitable quantity of water and form dispersion liquid, add glass fiber impregnated 10-12 hours, taken Through baking the glass fibre for obtaining gadolinium oxide coating after going out；

（2）Dipotassium glycyrrhizinate is dissolved in into water and is configured to the solution that mass fraction is 3-5%, add brucite powder dipping 8-10 hours Filtering drying, adds nano silicon to mix in 830-950 DEG C of roasting 1-2 hour, and cooling adds triacetin, low-carbon (LC) Steel fibre is put into ball milling 2-3 hours in ball mill, dries the brucite powder that must be modified；

（3）Polyvinyl chloride resin, coumarone indene resin are put in drying box and process 6-8 hours in 110-115 DEG C, sealing preserve is standby；

（4）By step（3）In material input double screw extruder, step is added（1）、（2）Material and other residual components meltings It is blended and granulates and to obtain stuff and other stuff；

（5）Finally by step（4）Stuff and other stuff is put into injection mo(u)lding in plastic injection molding machine, discharging.

It is an advantage of the invention that：Gadolinium oxide Jing amino silanes are coupled and are coated on fiberglass surfacing as enhancing by the present invention On the other hand material is added in raw material, on the one hand improves compatibility of the glass fibre in PVC matrix, when rushing in external force During hitting, the impulsive force that PVC matrix is subject to is transferred to be undertaken on glass fibre and by it, cause glass fibre rupture or from Substantial amounts of energy is absorbed in PVC matrix, so as to reach the purpose of toughness reinforcing；Simultaneously the present invention is also by brucite powder Jing nanometer titanium dioxides Silicon, the process of mild steel fibre modification are added in raw material as modified filler, improve the anti-corrosive properties and tensile resistance of product, Again compatibility adds other pvc pipes obtained in effective auxiliary agent in the well environment of colliery, with excellent heat resistance and excellent Shock resistance, and it is easy to process.

Specific embodiment

A kind of coal mine special PVC pipe for adding the high heat-proof impact-resistant of nano silicon, by the raw material system of following weight portion Into：Polyvinyl chloride resin 100, coumarone indene resin 12, glass fibre 14.9, nano silicon 2, brucite powder 19, triacetin 3rd, gadolinium oxide 3.6, low-carbon (LC) steel fibre 6, dipotassium glycyrrhizinate 0.5, amino silane 5, chlorinated paraffin 2.2, appropriate amount of water.

A kind of preparation method of the coal mine special PVC pipe of the described high heat-proof impact-resistant of addition nano silicon, including Following steps：

（1）Gadolinium oxide, amino silane are scattered in suitable quantity of water and form dispersion liquid, add glass fiber impregnated 10-12 hours, taken Through baking the glass fibre for obtaining gadolinium oxide coating after going out；

（2）Dipotassium glycyrrhizinate is dissolved in into water and is configured to the solution that mass fraction is 3-5%, add brucite powder dipping 8-10 hours Filtering drying, adds nano silicon to mix in 830-950 DEG C of roasting 1-2 hour, and cooling adds triacetin, low-carbon (LC) Steel fibre is put into ball milling 2-3 hours in ball mill, dries the brucite powder that must be modified；

（3）Polyvinyl chloride resin, coumarone indene resin are put in drying box and process 6-8 hours in 110-115 DEG C, sealing preserve is standby；

（4）By step（3）In material input double screw extruder, step is added（1）、（2）Material and other residual components meltings It is blended and granulates and to obtain stuff and other stuff；

（5）Finally by step（4）Stuff and other stuff is put into injection mo(u)lding in plastic injection molding machine, discharging.

Using the surface of coal mine special PVC pipe obtained in the present invention is smooth and color normal, combination property is relatively best, Its tensile strength is 78.7 MPa；Shear strength is 58.8 MPa；The pure pvc pipe of bending strength ratio improves 69.5%.

Claims (2)

1. a kind of coal mine special PVC pipe of the addition high heat-proof impact-resistant of nano silicon, it is characterised in that by following weight portion Raw material make：Polyvinyl chloride resin 100, coumarone indene resin 12-14, glass fibre 14.9-15.9, nano silicon 2-3, water magnesium Stone flour 19-22, triacetin 3-4, gadolinium oxide 3.6-4.1, low-carbon (LC) steel fibre 6-8, dipotassium glycyrrhizinate 0.5-0.8, amino Silane 5-7, chlorinated paraffin 2.2-2.5, appropriate amount of water.

2. the system of the coal mine special PVC pipe of a kind of addition high heat-proof impact-resistant of nano silicon according to claim 1 Make method, it is characterised in that comprise the following steps：

（1）Gadolinium oxide, amino silane are scattered in suitable quantity of water and form dispersion liquid, add glass fiber impregnated 10-12 hours, taken Through baking the glass fibre for obtaining gadolinium oxide coating after going out；

（2）Dipotassium glycyrrhizinate is dissolved in into water and is configured to the solution that mass fraction is 3-5%, add brucite powder dipping 8-10 hours Filtering drying, adds nano silicon to mix in 830-950 DEG C of roasting 1-2 hour, and cooling adds triacetin, low-carbon (LC) Steel fibre is put into ball milling 2-3 hours in ball mill, dries the brucite powder that must be modified；

（3）Polyvinyl chloride resin, coumarone indene resin are put in drying box and process 6-8 hours in 110-115 DEG C, sealing preserve is standby；

（4）By step（3）In material input double screw extruder, step is added（1）、（2）Material and other residual components meltings It is blended and granulates and to obtain stuff and other stuff；

（5）Finally by step（4）Stuff and other stuff is put into injection mo(u)lding in plastic injection molding machine, discharging.