Polyester plasticizer for leading glass fiber to form felt and preparation method of polyester plasticizer

A polyester plasticizer and glass fiber technology, applied in the direction of adhesive additives, polymer adhesive additives, etc., can solve the problems of not being suitable for glass fiber matting, poor compatibility of adhesives, and narrowing the scope of use. Achieve the effect of improving the scope of application, good bonding strength and low price

Active Publication Date: 2014-02-05
CHANGZHOU TIANMA GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this patent are: the process is complicated, the raw materials are more, a large amount of catalyst is needed, and the molecular weight is very large, there is no flexibility, and it is not suitable for glass fiber matting.
The disadvantages of this patent are: (1) This patent directly makes polyacids and polyols into emulsions with non-ionic emulsifiers, and then makes binders with crosslinking agents, which greatly reduces its scope of use
(2) The dibasic acid used is mainly phthalic acid, which still has the disadvantage of poor compatibility with the binder for glass fiber matting

Method used

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  • Polyester plasticizer for leading glass fiber to form felt and preparation method of polyester plasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0018] The polyester plasticizer for glass fiber matting in this embodiment is made of diethylene glycol, ethylene glycol, adipic acid and maleic anhydride, with a number average molecular weight of 1200 and a viscosity of 0.50 to 0.60 (Pa·s, 25°C).

[0019] The preparation method of this polyester plasticizer has the following steps:

[0020] ①Add 850g of diethylene glycol, 140g of ethylene glycol, 580g of adipic acid, and 220g of maleic anhydride into the reactor, feed in nitrogen gas and stir to gradually raise the temperature to 210°C. After the reaction system becomes uniform and transparent, Keep the temperature and continue the reaction until the measured acid value is less than 12 mgKOH / g.

[0021] ② Cool down to 190°C, add 162g of hydroquinone, then cool to 0°C-40°C, filter, and the filtrate is polyester plasticizer with a weight of 1610g and a number average molecular weight of 1200. Its appearance is light yellow viscous liquid, the acid value is 8-12 mgKOH / g, and...

Embodiment 2）

[0023] This embodiment is basically the same as Embodiment 1, and the differences are shown in Table 1.

Embodiment 3）

[0025] Step 1. in the preparation method of the present embodiment is basically the same as Example 1, and step 2. is as follows:

[0026] ②Cool to 0℃~40℃, filter, and the filtrate is the ester plasticizer. Its appearance is light yellow viscous liquid. See Table 1 for the rest of the differences.

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Abstract

The invention discloses a polyester plasticizer for leading glass fiber to form a felt and a preparation method of the polyester plasticizer. The polyester plasticizer is prepared from dihydric alcohol and dibasic acid. The preparation method comprises the following steps of: 1) adding the dihydric alcohol and the dibasic acid into a reactor, introducing nitrogen, stirring, rising the temperature to be 200-220 DEG C, and under the temperature, reacting till the acid value of the system is less than or equal to 20mgKOH / g; and 2) reducing the temperature to be 180-190 DEG C, adding hydroquinone, cooling to be 0-40 DEG C, filtering, and obtaining filtrate, i.e. the polyester plasticizer; or directly cooling to be 0-40 DEG C, filtering, and obtaining filtrate, i.e. the polyester plasticizer. In the invention, the compatibility of the polyester plasticizer and a bonding agent for leading the glass fiber to form the felt is good, the softness and the impregnability of a glass-fiber chopped felt can be improved and the use range is wide.

Description

technical field [0001] The invention relates to a polyester plasticizer and a preparation method thereof, in particular to a polyester plasticizer for glass fiber matting and a preparation method thereof. Background technique [0002] Glass fiber chopped strand mat is made by chopping glass fiber strands (or rovings) to a certain length and randomly distributing them evenly without orientation, then applying appropriate chemical binders, drying, cold pressing, and cooling felt products. In addition to retaining the inherent characteristics of glass fiber, glass fiber chopped strand mat has many excellent properties. The intrinsic properties of glass fiber chopped strand mat mainly include the strength, softness and permeability of the mat. The main factors affecting the intrinsic properties of the chopped strand mat are the sizing used in the process of forming the original filament and the sizing agent used in the forming process of the chopped strand mat. binder. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/672C09J11/08
Inventor 曹鑫杨春王海军
Owner CHANGZHOU TIANMA GROUP CO LTD
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