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Quickly-curable dip-coating glue solution, engine oil filter paper applying same and preparation method thereof

A fast-curing, oil filter paper technology, applied in the field of filter paper, can solve the problems of high brittleness, slow curing speed, and high production cost of filter paper, and achieve the effects of good flexibility, fast curing speed, and increased production

Active Publication Date: 2017-09-19
山东龙德复合材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the curing degree of phenolic resin is difficult to achieve 100% complete curing, and the energy required is high, and the curing time at high temperature is long
[0004] At present, phenolic resin is used for curing, and the following inevitable defects exist in the conventional production process of oil filter materials: when the curing degree is high, the filter paper is brittle, easy to break during the folding process, and lacks flexibility; the curing speed is slow, and the required The curing temperature is high, and the energy consumption is large; the color after curing is dark brown, which is not beautiful; the production cost is high

Method used

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  • Quickly-curable dip-coating glue solution, engine oil filter paper applying same and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Dip glue:

[0036] Low-temperature fast-curing dip-coating glue for engine oil filter paper, its raw material components and their weight percentages are as follows:

[0037] Thermosetting resin 68%, thermoplastic resin 28%, dicyandiamide 1%, hexamethylenetetramine 3%.

[0038] A preparation method of low-temperature fast-curing engine oil filter paper, comprising the following steps:

[0039] (1) Preparation of base paper: Weigh mixed fibers composed of softwood pulp fibers, broadleaf pulp fibers and PET fibers and soak for 45 minutes to disintegrate. Among the mixed fibers, by weight ratio, softwood pulp fibers account for 50%, broadleaf pulp Pulp fiber accounts for 30%, PET fiber accounts for 20%. After the disintegration is completed, it is disintegrated by the disintegrator and then introduced into the disintegrating pulp tank. After being diluted with white water in the disintegrating pulp tank, it is refined by a conical refiner and then introduced into the for...

Embodiment 2

[0043] With the dip coating glue solution described in embodiment 1, the difference is that raw material components and weight percentages thereof are composed as follows:

[0044] Thermosetting resin 70%, thermoplastic resin 25%, dicyandiamide 3%, hexamethylenetetramine 2%.

Embodiment 3

[0046] With the dip coating glue solution described in embodiment 1, the difference is that raw material components and weight percentages thereof are composed as follows:

[0047] Thermosetting resin 65%, thermoplastic resin 30%, dicyandiamide 1%, hexamethylenetetramine 4.

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Abstract

The invention relates to a quickly-curable dip-coating glue solution, engine oil filter paper applying the same and a preparation method thereof. The low-temperature quickly-curable oil filter paper is obtained by impregnation and curing of dip-coating glue solution dilution. The dip-coating glue solution is prepared from, by weight, 60-75% of thermosetting resin, 20-35% of thermoplastic resin, 0.5-2% of an accelerant and 1-5% of a curing agent, wherein the accelerant is hexamethylene tetramine, and the curing agent is dicyandiamide. Compared with adoption of existing phenolic resin, under identical drying oven temperature conditions, adoption of the dip-coating glue solution for dip-coating of raw paper can increase speed by 10%, increase yield and increase profits. Products are high in flexibility on the premise of guaranteeing filter paper quality, and bending at a subsequent section is facilitated.

Description

technical field [0001] The invention belongs to the technical field of filter paper, and in particular relates to a fast-curing dip-coating glue solution, engine oil filter paper using the dip-coating glue solution and a preparation method thereof. Background technique [0002] The oil filter material used for industrial filtration of gas turbines is generally composed of cellulose fibers and synthetic fibers, and the base paper is made after resin impregnation and curing. It has the main characteristics of high burst resistance, stiffness, and flexibility, etc., and is easy to process. [0003] There are two types of phenolic resins, thermosetting and thermoplastic. The thermosetting resin is divided into three stages from the process of impregnating the filter paper until the filter element is cured at high temperature to form the assembly filter element. Its mechanism of action: when the filter paper is impregnated with phenolic resin in the first stage, because of the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/48D21H19/24D21H17/55D21H13/24D21H21/20D21H23/56D21H25/06D21H27/08
Inventor 沈新时同宝
Owner 山东龙德复合材料科技股份有限公司
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