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Preparation method of electronic package mould cleaning rubber

An electronic packaging and rubber technology is applied in the field of preparation of electronic packaging mold cleaning rubber, which can solve the problems of increased mold cleaning cost in the electronic packaging industry, restrictions on the preservation and use of mold cleaning rubber, water or other solvents, etc., and achieves good preservation effect at room temperature. , Improve the performance and competitiveness of products, the effect of convenient manufacturing

Inactive Publication Date: 2014-10-08
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the mold cleaning rubber commonly used in electronic packaging in my country often has the following characteristics: 1. The mold cleaning rubber needs to be stored at low temperature to ensure the cleaning effect; 2. A certain amount of resin is often added; 3. The formula often contains pigments, which is easy to cause secondary pollution ;4. The cleaning ingredients often contain acid, alkali, metal salt and other cleaning ingredients, which have potential corrosion effect on the mold under cleaning conditions; 5. The formula often contains water or other solvents; 6. The price of mold cleaning rubber is quite high
[0004] The above characteristics limit the preservation and use of the above-mentioned mold cleaning rubber, and at the same time greatly increase the mold cleaning cost of the electronic packaging industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Step 1: After adjusting the mixing temperature of the rubber mixer to 55°C, add 100 parts of combined rubber to the open mixer for mastication; the added combined rubber is butadiene rubber, ethylene propylene rubber, isoprene rubber, butadiene rubber, Styrene rubber, the amount added is by weight ratio (2-4): 1: (2-4): (1-3).

[0017] Step 2: Put 4 parts of stabilizer, 1 part of anti-scorch agent, 10 parts of cleaning agent, 50 parts of rubber filler and 10 parts of organic solvent into a high-speed mixer and mix thoroughly for 5-15 minutes, then combine with the product obtained in step 1 The plasticized rubber is mixed together, and it is ready for use after mixing evenly; the stabilizer combination is anti-aging agent A, anti-aging agent H, antioxidant 1010 light stabilizer 4-acetonyl-1,2,2,6, 6-pentamethylpiperidine; the anti-scorch agent is PVI; the cleaning agent combination is formamide and propanolamine with a weight ratio of 2:1; the rubber filler composition ...

example 2

[0021] Step 1: After adjusting the mixing temperature of the rubber mixer to 65°C, add 100 parts of combined rubber to the open mixer for mastication. The added combined rubber is butadiene rubber, ethylene propylene rubber, isoprene rubber, butadiene rubber, Styrene rubber, butyl rubber, the amount added is by weight ratio (3-4):1:(2-4):(1.5-3):(0.5-1);

[0022] Step 2: Put 4 parts of stabilizer, 1 part of anti-scorch agent, 10 parts of cleaning agent, 40 parts of rubber filler and 10 parts of organic solvent into a high-speed mixer and mix thoroughly for 5-15 minutes, then combine with the product obtained in step 1 The plasticized rubber is put into the internal mixer together for mixing, and it is ready for use after mixing evenly. The stabilizer combination is anti-aging agent A, anti-aging agent H, antioxidant 1010 light stabilizer sebacic acid-(2, 2,6,6-tetramethyl-4-hydroxypiperidine) free radical; the anti-scorch agent is CTP; the cleaning agent is composed of acetami...

example 3

[0026] Step 1: After adjusting the rubber mixing temperature of the rubber mixer to 75°C, add 100 parts of combined rubber to the open mixer for mastication; the added combined rubber is butadiene rubber, ethylene propylene rubber, isoprene rubber, butadiene rubber Styrene rubber, the addition amount is added according to the weight ratio (2-4): 1: (2-3): (1-2);

[0027] Step 2: Put 4 parts of stabilizer, 1 part of anti-scorch agent, 15 parts of cleaning agent, 60 parts of rubber filler and 15 parts of organic solvent into a high-speed mixer and mix them thoroughly for 5-15 minutes. Put the rubber into the internal mixer together for mixing, and mix evenly for later use; here the stabilizer combination is anti-aging agent A, anti-aging agent H, antioxidant 1010 light stabilizer 4-epoxy-1 , 2,2,6,6-pentamethylpiperidine; the anti-scorch agent is KA-9026; the cleaning agent combination is dipropylenetriamine and 1-methylimidazole with a weight ratio of 1:2; the rubber filler com...

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Abstract

The invention discloses a preparation method of electronic package mould cleaning rubber. The preparation method comprises the following steps: firstly, adding a synthetic rubber composition into a rubber mixing mill for plastification; secondly, fully mixing a stabilizer, a scorch retarder, a cleaner, a filler composition and a solvent in a high-speed mixer to obtain a mixture, and mixing the mixture and plasticated rubber obtained in the first step in an internal mixer; thirdly, fully mixing a vulcanizer, an accelerant, the filler composition and the solvent in the high-speed mixer to obtain a mixture, and mixing the mixture with a rubber compound obtained in the second step for the second time; fourthly, thinning a rubber compound obtained in the third step for 5-6 times, tabletting, cutting according to the specified size, and plastically packaging. The preparation method has the advantages of being easy to operate and pollution-free; the cleaning rubber cannot corrode a mould, is low in preparation cost and good in cleaning performance, and can be stored at normal temperature.

Description

technical field [0001] The invention discloses a method for preparing mold cleaning rubber, in particular to a method for preparing electronic packaging mold cleaning rubber that can be preserved at normal temperature. Background technique [0002] When rubber, plastic and other composite materials are subjected to molding, injection molding and other operations, residues will inevitably be left on the surface of the mold. The light ones only affect the appearance of the product, and the heavy ones can seriously affect the product quality, and may also corrode the abrasive tools and affect the production efficiency. At present, there are many methods of mold cleaning, such as sand blasting, various solvent washing methods, electrochemical cleaning methods, laser cleaning methods, ultrasonic cleaning methods and so on. Because the mold cleaning rubber method has a series of advantages such as no need to disassemble the mold, fast cleaning speed, short cleaning time, less wea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08L23/16C08L9/06C08K13/02C08K5/13C08K5/3435C08K5/20C08K5/17C08K3/26C08K3/36C08K5/14
Inventor 高崇王树清高天伦刘晓歌单佳慧
Owner NANTONG UNIVERSITY
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