Water-based PP (polypropylene) treatment agent preparation method

A technology of treating agent and water-based wetting agent, applied in the field of preparation of PP treating agent and water-based PP treating agent, can solve the problems of poor water resistance, poor bonding applicability, high temperature pre-baking, etc., and improve the bonding performance. and the effect of water resistance

Active Publication Date: 2019-04-05
苏州市陆氏新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there are also reports of water-based PP treatment agents, there are generally proble

Method used

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  • Water-based PP (polypropylene) treatment agent preparation method
  • Water-based PP (polypropylene) treatment agent preparation method

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preparation example Construction

[0017] The preparation method of the water-based PP treatment agent of the present invention comprises the following steps: (a) adding 1 to 2 parts of silane coupling agent to 100 parts of chlorinated polyolefin emulsion (i.e. water-based chlorinated polypropylene emulsion), stirring to obtain the first Mixture; (b) add water-based wetting agent, water-based defoamer to the first mixture, stir to obtain the second mixture; (c) add polyurethane water-based thickener and water to the second mixture, control Its indexes are: the solid content is 8-15% (mass content), and the viscosity is 100-500cps. By adding a specific content and type of silane coupling agent to the chlorinated polyolefin emulsion for reaction coordination, and controlling the final solid content and viscosity, this can ensure the cross-linking reaction between the chlorinated polyolefin emulsion and the curing agent, thereby chlorinated The chain structure of polyolefin evolves into a network structure, thereb...

Embodiment 1

[0021] The present embodiment provides a kind of preparation method of aqueous PP treating agent, it comprises the following steps:

[0022] (a) to 100 parts of maleic anhydride-modified water-based chlorinated polypropylene emulsion (reference application number is 201710178027.3 method to make, so that the solid content of the water-based chlorinated polypropylene emulsion is 25 ~ 35%, the chlorine content is 12 ~18% and maleic anhydride content 1~2%), add 1 part of silane coupling agent (KH-450), and stir to obtain the first mixture;

[0023] (b) Add water-based wetting agent (KYC642) and water-based defoamer (AT-470) to the first mixture, and stir to obtain the second mixture; the mass content of water-based wetting agent and water-based defoamer in the second mixture Both are 0.1%;

[0024] (c) Add polyurethane water-based thickener (RM-2020) or / and water to the second mixture, and control the indicators as follows: solid content 8-15%, viscosity 100-500cps.

Embodiment 2

[0026] This example provides a preparation method of a water-based PP treatment agent, which is basically the same as that in Example 1, except that the addition amount of the silane coupling agent (KH-450) is 1.5 parts.

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Abstract

The invention relates to a water-based PP (polypropylene) treatment agent preparation method which includes the steps: (a) adding 1-2 parts of silane coupling agents into 100 parts of chlorinated polyolefin emulsion and stirring the silane coupling agents and the chlorinated polyolefin emulsion to obtain first mixture; (b) adding water-based wetting agents and water-based defoaming agents into thefirst mixture and stirring the water-based wetting agents, the water-based defoaming agents and the first mixture to obtain second mixture; (c) adding polyurethane water-based thickening agents or/and water into the second mixture, and controlling indexes: the solid content of 8-15% and the viscosity of 100-500cps. Therefore, crosslinking reaction of the chlorinated polyolefin emulsion and curingagents can be ensured, so that a chain structure of chlorinated polyolefin is evolved into a network structure, and the adhesion performance and the water resistance of a water-based PP treatment agent are improved. Moreover, crosslinking reaction auxiliary heating temperature is not higher than 80 DEG C, so that the water-based PP treatment agent can be applied to adhesion and flocking of automotive interior products.

Description

technical field [0001] The invention belongs to the field of adhesives, relates to a PP treatment agent, in particular to a preparation method of a water-based PP treatment agent. Background technique [0002] The surface energy of polypropylene (PP) is low, and surface treatment must be carried out before its surface is painted, printed or bonded. Surface treatment can be roughly divided into two categories: physical and chemical. Physical treatment includes plasma treatment, corona treatment and other methods, which require equipment investment and are easy to cause deformation of complex parts; the simplest chemical treatment is to apply PP treatment agent. The surface of the material is evenly coated with the treatment agent, and the next process can be carried out after drying. [0003] At present, most of the PP treatment agents commonly used in the market are solvent-based products, which are simple and reliable in construction, but there are inevitably VOC problems....

Claims

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Application Information

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IPC IPC(8): C09J151/06C09J11/06C09J11/08C08J7/12C08L23/12
CPCC08J7/12C08J2323/12C08J2451/06C09J11/06C09J11/08C09J151/06C08L75/04C08K5/54
Inventor 陆建明
Owner 苏州市陆氏新材料有限公司
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