A kind of toughened type pentaerythritol acrolein resin and preparation method thereof

A technology of pentaerythritol acrolein resin and pentaerythritol, applied in the field of toughened pentaerythritol acrolein resin and its preparation, to achieve the effect of improving toughness and improving mechanical properties

Active Publication Date: 2019-08-23
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few research reports on the toughening of pentaerythritol acrolein resin

Method used

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  • A kind of toughened type pentaerythritol acrolein resin and preparation method thereof
  • A kind of toughened type pentaerythritol acrolein resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A toughened pentaerythritol acrolein resin, the formulation of which consists of: pentaerythritol acrolein resin: 91 parts, benzyl alcohol: 9 parts, diethyl sulfate: 4.5 parts.

[0027] The preparation of the toughened type pentaerythritol acrolein resin mainly includes the following steps:

[0028] (1) Pretreatment of pentaerythritol acrolein resin: first, preheat the resin in an oven at 50°C, then pass through a 200-mesh screen to remove large particle aggregates, and then treat the resin under vacuum for more than 30 minutes, and the vacuum degree is ≤ -0.090Mpa, the temperature is 50°C, so as to remove the small molecular components, and set aside;

[0029] (2) Water removal treatment of the catalytic curing agent: treat the catalytic curing agent under vacuum conditions for more than 30 minutes, the vacuum degree is ≤ -0.090Mpa, and the temperature is 50°C to remove the water molecules in it, and set aside.

[0030] (3) Ingredients: take the pretreated resin, the ...

Embodiment 2

[0038] A toughened pentaerythritol acrolein resin, the formulation of which consists of: pentaerythritol acrolein resin: 87 parts, benzyl alcohol: 13 parts, diethyl sulfate: 4.4 parts.

[0039] The preparation method is the same as in Example 1.

[0040] The various indicators of the obtained cured product are as follows:

[0041] (1) The viscosity of the material changes as figure 2 , the initial viscosity is 74 centipoise, and the viscosity after curing for 0.5h, 1h, 1.5h, 1.8h and 1.9h is 96 centipoise, 162 centipoise, 1002 centipoise, 8964 centipoise and 31325 centipoise respectively;

[0042] (2) Mechanical properties: tensile strength 14.82MPa, elongation at break 32.51%;

[0043] (3) After the film is impacted by a sudden change in temperature from -40 to 70°C, the appearance has no cracks or blocks.

Embodiment 3

[0045] A toughened pentaerythritol acrolein resin, the formulation of which consists of: pentaerythritol acrolein resin: 83 parts, benzyl alcohol: 17 parts, diethyl sulfate: 4.2 parts.

[0046] The preparation method is the same as in Example 1.

[0047] The various indicators of the obtained cured product are as follows:

[0048] (1) The viscosity of the material changes as figure 2 , the initial viscosity is 70 centipoise, and the viscosity after curing for 0.5h, 1h, 1.5h, 2h and 2.3h is 88 centipoise, 106 centipoise, 376 centipoise, 3131 centipoise and 31500 centipoise respectively;

[0049] (2) Mechanical properties: tensile strength 4.11MPa, elongation at break 63.17%;

[0050] (3) After the film is impacted by a sudden change in temperature from -40 to 70°C, the appearance has no cracks or blocks.

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Abstract

The invention discloses toughening type pentaerythritol acrolein resin. The toughening type pentaerythritol acrolein resin is prepared from the following components in parts by weight: 75 to 95 partsof pentaerythritol acrolein resin, 5 to 25 parts of a flexibilizer and 3 to 5 parts of a catalytic curing agent. The invention also provides a preparation method of the toughening type pentaerythritolacrolein resin. Compared with the prior art, the toughening type pentaerythritol acrolein resin disclosed by the invention has the advantages that a low molecular-weight polymer phenylcarbinol is added for carrying out resin modification and a specific preparation process is selected, so that mechanical properties of the pentaerythritol acrolein resin can be significantly improved; particularly,the toughness of the resin is greatly improved, and further the pentaerythritol acrolein resin can adapt to more severe high and low temperature environment impact.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a toughened pentaerythritol acrolein resin and a preparation method thereof. Background technique [0002] Pentaerythritol acrolein resin is a multi-component prepolymer mixture formed by the polymerization of pentaerythritol and acrolein. Combining pentaerythritol and acrolein in different proportions will produce different products, such as monoacrolein pentaerythritol, diacrolein pentaerythritol, etc. The pentaerythritol acrolein resin system contains polyhydroxyl and alkenyl groups, which can be heated in the presence of an acid catalyst or react with polyols to cure into a highly transparent and good mechanical properties, heat resistance, chemical resistance and electrical properties. hard plastic. The cured resin can be widely used as surface coating, adhesive, electrical potting glue and molded products, etc. [0003] However, the pentaerythritol acrolein resin has the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/00C08K5/05
Inventor 刘慧慧汤滢郑申声蒋全萍
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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