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Water-soluble supramolecular inclusion compound DPG and preparation method and application thereof

A supramolecular compound and supramolecular technology are applied in the field of water-soluble supramolecular clathrate DPG for latex sponge foaming and its preparation, which can solve the problems of easy deposition of DPG, uneven dispersion of DPG, and latex gelation, and the like. Fast curing activation effect, simple and easy preparation method, improved water solubility and thermal stability

Active Publication Date: 2022-02-25
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to solve the problem that DPG is easy to deposit, resulting in uneven dispersion of DPG, excessive local DPG concentration, and partial gelation of the latex

Method used

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  • Water-soluble supramolecular inclusion compound DPG and preparation method and application thereof
  • Water-soluble supramolecular inclusion compound DPG and preparation method and application thereof
  • Water-soluble supramolecular inclusion compound DPG and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1, ball milling for 20 minutes to prepare DPG-HP-β-CD inclusion complex steps are as follows:

[0031] Take 2.286 g of HP-β-CD, add 20 mL of water; after HP-β-CD is completely dissolved, add 0.211 g of DPG, and ball mill at 21 Hz for 20 min at room temperature to mix thoroughly, filter out unreacted DPG, and dry A water-soluble DPG-HP-β-CD clathrate was obtained.

Embodiment 2

[0032] Example 2, ball milling for 60 minutes to prepare DPG-HP-β-CD inclusion complex steps are as follows:

[0033] Take 2.286 g of HP-β-CD and add 20 mL of water; after the HP-β-CD is completely dissolved, add 0.211 g of DPG, and ball mill at room temperature for 60 min at 21 Hz to fully mix, filter out the unreacted DPG, and dry it. A water-soluble DPG-HP-β-CD clathrate was obtained.

Embodiment 3

[0034] Example 3, ball milling for 100 min to prepare DPG-HP-β-CD inclusion complex steps are as follows:

[0035] Take 2.286 g of HP-β-CD and add 20 mL of water; after the HP-β-CD is completely dissolved, add 0.211 g of DPG, and ball mill at room temperature for 100 min at 21 Hz to fully mix, filter out unreacted DPG, and dry A water-soluble DPG-HP-β-CD clathrate was obtained.

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Abstract

The invention discloses a water-soluble supramolecular inclusion compound DPG and a preparation method and application thereof. According to the method, a supramolecular compound and a vulcanization accelerator DPG are subjected to supramolecular interaction to form the supramolecular inclusion compound DPG, the molecular structure of the DPG can be completely reserved while the water solubility and dispersity of the DPG are improved, and the performance of latex cannot be affected by the used supramolecular body. A supramolecular compound and DPG are subjected to ball milling according to a certain proportion to prepare a supramolecular inclusion compound DPG, then the water-soluble supramolecular inclusion compound DPG is added in the natural latex ripening process, and a latex sponge product is obtained after mixing, foaming on a machine, vulcanization in steam box and drying. The tensile strength and rebound resilience of the prepared latex product are obviously improved, the hardness is also reduced, and meanwhile, the latex product is more healthy and sanitary and has a wide market prospect.

Description

technical field [0001] The invention relates to the field of latex industry, in particular to a latex sponge foaming water-soluble supramolecular clathrate DPG and a preparation method and application thereof. Background technique [0002] The chemical name of the accelerator DPG is 1,3-diphenylguanidine. It is a medium-speed accelerator for rubber vulcanization. It is often used as a secondary accelerator that works synergistically with thiazole thiurams and sulfenamide accelerators. Using DPG as a secondary accelerator in rubber compound formulations helps produce faster cure activation, imparting high modulus and tensile strength to the rubber. Nowadays, in the latex industry, DPG is generally prepared into a dispersion with a solid content of about 50% by a ball mill. Due to the low solubility of DPG (about 315 mg / L in water at 25°C), it is easy to deposit, resulting in DPG Uneven dispersion and high local DPG concentration will cause partial gelation of the latex and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/16C08L7/02C08L5/16C08K3/06C08J9/00
CPCC08B37/0015C08J9/0061C08J2307/02C08J2405/16C08J3/24C08L5/16
Inventor 张旺汪钰萍郭俊强刁国旺
Owner YANGZHOU UNIV
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