Preparation method of phenolic resin for automobile filter paper

A technology of phenolic resin and filter paper, which is applied in the field of preparation of phenolic resin for automotive filter paper, and can solve problems such as increased viscosity, flameout, power drop, and wear

Pending Publication Date: 2020-10-23
苏州兴业材料科技南通有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The presence of moisture can emulsify engine oil and fuel, increase the viscosity, and cause wear and corrosion to the oil circuit and the inner wall of the engine; the increase in moisture content in the fuel can also reduce the combustion performance of the oil, resulting in flameout and power decline. The oil-water separation function Automobile filter paper can filter out the water in the oil, but the commonly used automotive filter paper is to achieve the purpose of oil-water separation by coating paraffin materials, which has a general oil-water separation ability, and paraffin-based hydrophobic agents are miscible with engine oil, diesel oil, gasoline, etc. , with the increase of use time, it will gradually dissolve, and the hydrophobic efficiency will gradually decrease, which will make the engine gradually corroded

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 1000g of phenol and 40g of NaOH solution with a concentration of 48%, put them into a 3000ml reaction bottle, add 1200g of formaldehyde with a concentration of 37% dropwise after heating to 95°C, reflux at 102°C for 1.5 hours, then cool down to 55 ℃, add 20g of boric acid to adjust the pH to 5.84, then vacuum dehydrate until the moisture content reaches 2.2wt%; immediately raise the temperature to 90℃, and then react until the polymerization speed is 92 seconds; cool down to 40℃, then add 550g of methanol, 2g of formic acid and 2g of hydrophobic Silicone oil to obtain the finished product of phenolic resin; the resin viscosity was measured to be 79cps, and after cooling to 30°C, it was bottled for later use.

[0021] Take 180g of the synthesized phenolic resin, add 60g of methanol, and soak the filter paper in a 250mL beaker. After the filter paper is completely combined with the resin, put it in an oven at 180°C, take it out after 10 minutes, and obtain the automob...

Embodiment 2

[0023] Take 1000g of phenol and 40g of NaOH solution with a concentration of 48%, put them into a 3000ml reaction bottle, add 1200g of formaldehyde with a concentration of 37% dropwise after heating to 95°C, reflux at 102°C for 1.5 hours, then cool down to 55 ℃, add 20g of boric acid to adjust the pH to 5.80, then vacuum dehydrate until the moisture content reaches 2.4wt%; immediately raise the temperature to 90℃, and then react to the polymerization speed for 95 seconds; cool down to 40℃, then add 550g of methanol, 2g of formic acid and 2g of hydrophobic Silicone oil to obtain the finished product of phenolic resin; the resin viscosity was measured to be 73cps, and after cooling to 30°C, it was bottled for later use.

[0024] Take 180g of the synthesized phenolic resin, add 60g of methanol, and soak the filter paper in a 250mL beaker. After the filter paper is completely combined with the resin, put it in an oven at 180°C, take it out after 10 minutes, and obtain the automobil...

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PUM

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Abstract

The invention discloses a preparation method of phenolic resin for automobile filter paper and belongs to the technical field of organic chemistry. The preparation method of the phenolic resin for theautomobile filter paper comprises the following processes: adding a certain amount of phenol, liquid formaldehyde and a basic catalyst into a reaction kettle; performing reflux reaction for a periodof time at the temperature of 100 to 102 DEG C; cooling to 55 DEG C or below, adding boric acid to control the pH value to be 5.5 to 6.0, then performing vacuum dehydration until the water content isqualified, then continuing to react at the temperature of 90 DEG C until the polymerization speed meets the standard, then cooling to 40 DEG C, adding methanol and formic acid to adjust the viscosity,and finally adding a reactive hydrophobic agent to obtain the phenolic resin material for the automobile filter paper. The phenolic resin prepared by the method can enable the automobile filter paperto have better oil-water separation performance, and the service life of a filter element can be prolonged.

Description

technical field [0001] The invention relates to a technique in the field of organic chemistry, in particular to a method for preparing a phenolic resin for automobile filter paper. Background technique [0002] Phenolic resin is a high molecular organic compound, which is formed by polycondensation of phenolic compounds and aldehyde compounds. Its raw material cost is low and its production process is mature. It is widely used in various fields, and phenolic resin modified automotive filter paper is one of them. important branch. [0003] The phenolic resin used for automotive filter paper is generally phenol-formaldehyde resin, including oil filter paper and fuel filter paper. The main purpose is to filter particulate impurities in engine oil and fuel, and reduce the wear and tear of particulate impurities on key engine components. The automobile filter paper prepared by phenolic resin has good toughness and stiffness. Due to the moisture contained in engine oil and fuel ...

Claims

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Application Information

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IPC IPC(8): C08G8/28B01D17/022D21H17/48
CPCC08G8/28B01D17/02D21H17/48
Inventor 李乐益申同伟王文浩王锦程
Owner 苏州兴业材料科技南通有限公司
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