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Acid-resistant and anticorrosive lining and preparation method thereof

A technology of anti-corrosion lining and barium sulfate, which is applied in the field of acid-resistant anti-corrosion materials, can solve the problems of poor wear resistance and easy deformation of sealing materials, and achieve the effects of enhancing rigidity, enhancing mechanical properties, increasing hardness and corrosion resistance strength

Inactive Publication Date: 2019-01-15
GUIZHOU XIANGYU PUMP VALVE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although PTFE has stable performance, there are still problems such as poor wear resistance and easy deformation as a sealing material. Therefore, it is necessary to invent a polytetrafluoroethylene that can improve the acid corrosion resistance and deformation resistance of the material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1. An acid-resistant and anti-corrosion lining is composed of the following raw materials in parts by weight:

[0031] Polytetrafluoroethylene: 48 parts, Natural rubber: 40 parts,

[0032] Glass fiber: 14 parts, carbon black: 9 parts,

[0033] Copper powder: 3 parts, Accelerator TT: 0.7 parts,

[0034] High styrene: 15 parts, barium sulfate 16 parts,

[0035] Paraffin oil: 7 parts.

[0036] The aforementioned acid-resistant anti-corrosion lining is prepared according to the following steps:

[0037] a. Break polytetrafluoroethylene, natural rubber, glass fiber, carbon black, copper powder, high styrene and barium sulfate into powder;

[0038] b. Mix the above powders and bake at 100-120°C for 4-5 hours to obtain product A;

[0039] c. Stir product A at 25-30°C, add accelerator TT and paraffin oil and mix well to obtain product B;

[0040] d. Put the product B into a sintering furnace after being press-molded and rapidly raise the temperature to 400-420°C,...

Embodiment 2

[0041] Example 2. An acid-resistant and anti-corrosion lining is composed of the following raw materials in parts by weight:

[0042] Polytetrafluoroethylene: 55 parts, Natural rubber: 45 parts,

[0043] Glass fiber: 18 parts, carbon black: 12 parts,

[0044] Copper powder: 5 parts, Accelerator TT: 1 part,

[0045] High styrene: 18 parts, barium sulfate 20 parts,

[0046] Paraffin oil: 9 parts.

[0047] The aforementioned acid-resistant anti-corrosion lining is prepared according to the following steps:

[0048] a. Break polytetrafluoroethylene, natural rubber, glass fiber, carbon black, copper powder, high styrene and barium sulfate into powder;

[0049] b. Mix the above powders and bake at 100-120°C for 4-5 hours to obtain product A;

[0050] c. Stir product A at 25-30°C, add accelerator TT and paraffin oil and mix well to obtain product B;

[0051] d. Put the product B into a sintering furnace after being press-molded and rapidly raise the temperature to 400-420°C, s...

Embodiment 3

[0052] Example 3. An acid-resistant and anti-corrosion lining is composed of the following raw materials in parts by weight:

[0053] Polytetrafluoroethylene: 40 parts, Natural rubber: 35 parts,

[0054] Glass fiber: 10 parts, carbon black: 6 parts,

[0055] Copper powder: 1 part, Accelerator TT: 0.3 part,

[0056] High styrene: 12 parts, barium sulfate 12 parts,

[0057] Paraffin oil: 5 parts.

[0058] The aforementioned acid-resistant anti-corrosion lining is prepared according to the following steps:

[0059] a. Break polytetrafluoroethylene, natural rubber, glass fiber, carbon black, copper powder, high styrene and barium sulfate into powder;

[0060] b. Mix the above powders and bake at 100-120°C for 4-5 hours to obtain product A;

[0061] c. Stir product A at 25-30°C, add accelerator TT and paraffin oil and mix well to obtain product B;

[0062] d. Put the product B into a sintering furnace after being press-molded and rapidly raise the temperature to 400-420°C, s...

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PUM

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Abstract

The invention discloses an acid-resistant and anticorrosive lining, which is composed of the following raw materials (by weight): 40-55 parts of polytetrafluoroethylene, 35-45 parts of natural rubber,10-18 parts of glass fibre, 6-12 parts of carbon black, 1-5 parts of copper powder, 0.3-1 part of a promoter TT, 12-18 parts of high styrene, 12-20 parts of barium sulfate, and 5-9 parts of paraffinoil. The acid-resistant and anticorrosive lining has wear-resistant and anti-deformation characteristics, and has good acid-resistant, corrosion-resistant and anti-deformation characteristics.

Description

technical field [0001] The invention relates to the field of acid-resistant and anti-corrosion materials, in particular to an acid-resistant and anti-corrosion lining. Background technique [0002] Tetrafluoroethylene is a polymer of tetrafluoroethylene. English abbreviation is PTFE. Polytetrafluoroethylene (PTFE) is hardly corroded by any chemical reagents. For example, when boiled in concentrated sulfuric acid, nitric acid, hydrochloric acid, or even in aqua regia, its weight and properties do not change, and it is almost insoluble in all solvents, and only slightly soluble in all alkanes (about 0.1g / 100g) above 300°C. PTFE does not absorb moisture, is non-flammable, and is extremely stable to oxygen and ultraviolet rays, so it has excellent weather resistance. [0003] PTFE can be formed by compression or extrusion, and can also be made into aqueous dispersion for coating, impregnation or fiber. PTFE is widely used as high and low temperature resistant, corrosion resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/00C04B35/632C04B35/63
CPCC04B35/80C04B35/00C04B35/6303C04B35/632C04B2235/3215C04B2235/424C04B2235/48C04B2235/522C04B2235/602C04B2235/656C04B2235/6567C04B2235/9692
Inventor 朱德祥
Owner GUIZHOU XIANGYU PUMP VALVE MFG
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