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Preparation method of polyvinyl alcohol formaldehyde adhesive
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A polyvinyl alcohol formaldehyde and adhesive technology, applied in the direction of adhesive additives, non-polymer adhesive additives, etc., can solve the problems of low efficiency and singleness, and achieve the effects of easy operation, convenient and simple preparation, and high purity
Inactive Publication Date: 2014-10-08
ANHUI PIONEER DOOR IND TECH
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Because of its simple process, cheap raw materials, high bonding strength, colorless and transparent, etc., it is widely used in industries such as panel bonding and interior decoration. Single, the efficiency is still relatively low
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Embodiment 1
[0020] Polyvinyl alcohol formaldehyde adhesive, consisting of the following materials by weight:
[0021]
[0022] Another object of the present invention is the method for preparing the polyvinyl alcohol formaldehyde adhesive of the present invention, comprising the following process steps,
[0023] a. Select a reaction kettle, put all the polyvinyl alcohol in the raw material into it according to the recipe amount, then add 1 / 3 of the recipe amount of water into it, stir, and heat up to 90-95°C.
[0024] b. After the temperature rise in the above step a is completed, lower the temperature. When the temperature drops to 90°C, put all the formaldehyde in the raw materials into it according to the formula amount, and stir and mix.
[0025] c. Continue to lower the temperature. When the temperature drops to 85°C, add all the hydrochloric acid in the raw material according to the formula amount, continue the reaction for 17 minutes, and then add the sodiumhydroxide in the raw...
Embodiment 2
[0030] Polyvinyl alcohol formaldehyde adhesive, consisting of the following materials by weight:
[0031]
[0032] Another object of the present invention is the method for preparing the polyvinyl alcohol formaldehyde adhesive of the present invention, comprising the following process steps,
[0033] a. Select a reaction kettle, put all the polyvinyl alcohol in the raw material into it according to the recipe amount, then add 1 / 3 of the recipe amount of water into it, stir, and heat up to 90-95°C.
[0034] b. After the temperature rise in the above step a is completed, lower the temperature. When the temperature drops to 90°C, put all the formaldehyde in the raw materials into it according to the formula amount, and stir and mix.
[0035] c. Continue to lower the temperature. When the temperature drops to 85°C, add all the hydrochloric acid in the raw material according to the formula amount, continue the reaction for 17 minutes, and then add the sodiumhydroxide in the raw...
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Abstract
The invention discloses a preparation method of a polyvinyl alcoholformaldehydeadhesive, and relates to the technical field of chemical industry. The polyvinyl alcoholformaldehydeadhesive comprises the following raw materials: 120-130 parts of polyvinyl alcohol, 800-802 parts of water, 45-55 parts of a formaldehyde with the concentration of 37%, 17-19 parts of a hydrochloric acid with the concentration of 37%, 5-7 parts of sodiumhydroxide, 25-35 parts of tributyl phosphate, and 4-6 parts of an essence. The preparation method has the beneficial effects that the preparation method has the advantages of convenient and simple preparation, environmental protection, no pollution, easy availability of raw materials, little equipment investment, high purity and convenient operation, and the prepared polyvinyl alcohol formaldehyde adhesive is good in using effect, proper in viscosity, and safe and reliable.
Description
technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of polyvinyl alcohol formaldehyde adhesive. Background technique [0002] Adhesives are essential materials for the development of modern industry and the improvement of human living standards. Adhesives and bonding technology are special crafts that cannot be compared with other connection methods, and play an important role in modern economy, modern national defense, and modern science and technology. . For example, there are almost no adhesives and bonding technologies in the various aircraft of modern aerospace. It can be said that where there are human beings, adhesive products and bonding technologies are indispensable. It provides a novel and practical process for the industry. 'Created a colorful life for human beings. Adhesives, plastics, synthetic rubber, and synthetic fiber 1 coatings are collectively known as the five major synthetic m...
Claims
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