CN103965568A - Strong-acid-resistant composite material of corrosion-resistant lining of chemical process pump - Google Patents

Abstract

The invention discloses a strong-acid-resistant composite material of a corrosion-resistant lining of a chemical process pump. The strong-acid-resistant composite material is characterized by comprising raw materials in parts by weight as follows: 70-75 parts of polytetrafluoroethylene, 2-3 parts of short glass fiber, 12 parts of nylon, 10-12 parts of powder, 2-3 parts of montmorillonite powder, 1-2 parts of methyl methacrylate, 3-5 parts of fused alumina zirconia abrasive, 1-2 parts of graphene and 2-3 parts of composite modified diatomite powder. The specific preparation technology is that polytetrafluoroethylene and the short glass fiber are finely ground by a colloid mill and mixed with other raw materials, the mixture is uniformly ground by the colloid mill, and finally the mixture is sieved by a 70-90-mesh sieve to obtain a product.The composite material is resistant to strong acid, low in manufacturing cost and simple and convenient to process and form.

Description

The anti-strong acid matrix material of chemical flow-process pump corrosion-proof lining

Technical field

The present invention relates to the anti-strong acid matrix material of chemical flow-process pump corrosion-proof lining.

Background technology

Chemical flow-process pump is in chemical industry or petrochemical complex production, pump is at high temperature, low temperature or very low temperature, high pressure, inflammable, explosive, under poisonous strong corrosive medium, work, the feature of chemical flow-process pump in addition can be in high inlet pressure, high-lift, high viscosity, low discharge, under high cavitation conditions, work, chemical industry pump performance is proposed to quite harsh requirement, particularly to erosion resistance, do not allow leakage and wearability requirement high. be to adapt to Chemical Manufacture particular requirement, special production work dedicated pump also in changing machine industry, as plastic pump, glass pump, ceramic pump, graphite pump, canned-motor pump, magnetic drive pump, transh pump etc.Performance requriements for the anticorrosion high temperature resistance liner of chemical flow-process pump improves.

Summary of the invention

The anti-strong acid matrix material that the object of this invention is to provide a kind of chemical flow-process pump corrosion-proof lining, this matrix material is high temperature resistant, cost of manufacture is low, machine-shaping is easy.

Technical scheme of the present invention is as follows:

The anti-strong acid matrix material of chemical flow-process pump corrosion-proof lining, it is characterized in that, raw material by following weight part forms, tetrafluoroethylene 70-75, short glass fiber 2-3, nylon 12 powder 10-12, montmorillonite powder 2-3, methyl methacrylate 1-2, zircon corundum abrasive material 3-5, Graphene 1-2, composite modified diatomite in powder 2-3; Its concrete preparation technology is: tetrafluoroethylene, short glass fiber, with after colloidal mill fine grinding, after mixing, more even with colloidal mill, are finally used 70-90 mesh sieves to sieve and obtained product with other raw materials;

Described composite modified diatomite in powder is made by the raw material of following weight parts: diatomite 80-90, silicon carbide 10-20, titanium dioxide 1-2, secondary alcohol Soxylat A 25-7 0.2-0.4, silane coupling agent KH-792 2-3, tetrabutyl titanate 0.1-0.2, Zinc Stearate 2-5, methyl methacrylate 1-2; Preparation method calcines 3-4 hour by diatomite at 800-830 ℃, cooling after, put into 10-12% hydrochloric acid soln and soak 1-2 hour, take out, clean with clear water repetitive scrubbing, dry to obtain powder; Gained powder is joined in the water that 3-4 doubly measures, be heated with stirring to 70-80 ℃, then add silicon carbide, secondary alcohol Soxylat A 25-7, methyl methacrylate, silane coupling agent KH-792, stir 20-30 minute, cooling, dry, obtain the compound powder of diatomite; Finally the compound powder of diatomite is mixed to grinding distribution and get final product with other leftover materials.

By material by the different workpieces injection processing mold of weighing, processing mold is sent into heat pressing forming machines and be heated to after 230-260 °, apply with 50-100kg/cm2 pressure and model was fixed on to hot-plate in 5-10 minute, to reach thawing post-hardening, cooling 30-50 minute, then to take out model finished product;

The present invention is by diatomite modified, and silicon carbide and titanium dioxide have increased wear resistance and the corrosion resistance nature of material.

Main raw of the present invention is tetrafluoroethylene, and subsidiary material adopt short glass fiber, nylon 12 powder etc., and the anti-strongly-acid of matrix material that utilizes method of the present invention to make is good, cost of manufacture is low, machine-shaping is easy.

Embodiment

The anti-strong acid matrix material of chemical flow-process pump corrosion-proof lining, raw material by following weight part forms, tetrafluoroethylene 70, short glass fiber 3, nylon 12 powder 10, montmorillonite powder 3, methyl methacrylate 2, zircon corundum abrasive material 3, Graphene 1, composite modified diatomite in powder 2; Its concrete preparation technology is: tetrafluoroethylene, short glass fiber, with after colloidal mill fine grinding, after mixing, more even with colloidal mill, are finally used 70-90 mesh sieves to sieve and obtained product with other raw materials;

Described composite modified diatomite in powder is made by the raw material of following weight parts: diatomite 80, silicon carbide 20, titanium dioxide 2, secondary alcohol Soxylat A 25-7 0.4, silane coupling agent KH-792 3, tetrabutyl titanate 0.1, Zinc Stearate 2, methyl methacrylate 2; Preparation method calcines 3-4 hour by diatomite at 800-830 ℃, cooling after, put into 10-12% hydrochloric acid soln and soak 1-2 hour, take out, clean with clear water repetitive scrubbing, dry to obtain powder; Gained powder is joined in the water that 3-4 doubly measures, be heated with stirring to 70-80 ℃, then add silicon carbide, secondary alcohol Soxylat A 25-7, methyl methacrylate, silane coupling agent KH-792, stir 20-30 minute, cooling, dry, obtain the compound powder of diatomite; Finally the compound powder of diatomite is mixed to grinding distribution and get final product with other leftover materials.

Material of the present invention is cast in the inwall of chemical flow-process pump, and the anti-strong acid of energy, carries for acid solution, and can reach more than 10 years work-ing life.Without damaging, more existing chemical pump has 30% raising work-ing life.

Claims (1)

1. the anti-strong acid matrix material of chemical flow-process pump corrosion-proof lining, it is characterized in that, raw material by following weight part forms, tetrafluoroethylene 70-75, short glass fiber 2-3, nylon 12 powder 10-12, montmorillonite powder 2-3, methyl methacrylate 1-2, zircon corundum abrasive material 3-5, Graphene 1-2, composite modified diatomite in powder 2-3; Its concrete preparation technology is: tetrafluoroethylene, short glass fiber, with after colloidal mill fine grinding, after mixing, more even with colloidal mill, are finally used 70-90 mesh sieves to sieve and obtained product with other raw materials;

Described composite modified diatomite in powder is made by the raw material of following weight parts: diatomite 80-90, silicon carbide 10-20, titanium dioxide 1-2, secondary alcohol Soxylat A 25-7 0.2-0.4, silane coupling agent KH-792 2-3, tetrabutyl titanate 0.1-0.2, Zinc Stearate 2-5, methyl methacrylate 1-2; Preparation method calcines 3-4 hour by diatomite at 800-830 ℃, cooling after, put into 10-12% hydrochloric acid soln and soak 1-2 hour, take out, clean with clear water repetitive scrubbing, dry to obtain powder; Gained powder is joined in the water that 3-4 doubly measures, be heated with stirring to 70-80 ℃, then add silicon carbide, secondary alcohol Soxylat A 25-7, methyl methacrylate, silane coupling agent KH-792, stir 20-30 minute, cooling, dry, obtain the compound powder of diatomite; Finally the compound powder of diatomite is mixed to grinding distribution and get final product with other leftover materials.