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A kind of resin powder binder

A resin powder and binder technology, applied in the direction of adhesives, monocarboxylic acid ester copolymer adhesives, adhesive types, etc., can solve difficult production control, special monomers increase material cost, high molecular weight polyester The problem of high production cost, to achieve the effect of ensuring spreadability and adhesion, low cost and easy synthesis

Inactive Publication Date: 2014-10-29
南京彤天广元高分子材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production cost of high molecular weight polyester is high, the production control is relatively difficult, and the use of special monomers increases the cost of materials

Method used

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  • A kind of resin powder binder
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  • A kind of resin powder binder

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Experimental program
Comparison scheme
Effect test

Embodiment

[0033] The synthesis of polyester is a very mature technology, and the polyester resin with the required softening point can be obtained by adjusting the amount of different alcohols, acids or anhydride monomers. The synthetic formula of polyester A and polyester B is as follows:

[0034]

[0035] The synthesis process of polyester A is: add the above raw materials into the reaction kettle at one time, pass nitrogen, stir, slowly raise the temperature to 140°C for 3 hours, continue to raise the temperature to 240°C, and react until the acid value is 35 and the hydroxyl value is 5. When the temperature is about to cool down, the material is discharged. Its softening point is 105°C and its molecular weight is 2800.

[0036] The synthesis process of polyester B is: add the above raw materials into the reaction kettle at one time, pass nitrogen, stir, slowly raise the temperature to 140°C for 3 hours, continue to heat up to 240°C, and react until the acid value is 50 and the h...

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Abstract

The invention relates to a resin powder bonding agent. The softening point of the resin powder bonding agent is 100-210 DEG C, the resin powder bonding agent is formed by 10%-75wt% of polyester and 25%-90wt% of polyvinyl acetate, wherein the softening point of the polyester is 80-140 DEG C, the polyester is a compound formed by one kind or more than one kind of polyester with the molecular weight of 1000-5000 at an arbitrary portion in a mixing mode, the polyvinyl acetate is formed by means of a polyvinyl acetate process, and the softening point of the polyvinyl acetate is >=100 DEG C. The resin powder bonding agent is low in cost, good in smashing performance, not only easy to smash but also high in smashing efficiency; particle distribution of one-shot smashing is quite matched with set powder bonding agent particle distribution by means of the adjusting of crushing eqipment, second powder preparation is rarely needed; and a glass fiber mat formed by the resin powder bonding agent has good performance.

Description

technical field [0001] The invention relates to a resin powder binder. Background technique [0002] Fiberglass mat is an important class of fiberglass products used in the manufacture of composite storage tanks, profiles, ships, etc. The most common method of making mats is to bond glass fibers into mats with a binder. Powder binders are widely used. The resin powder used as the binder must be able to melt during the heating and forming of the felt, and have good bonding strength after cooling, and a certain particle distribution is also required. Generally, the polyester resin synthesized with special monomers with a molecular weight of more than 3500 is used to make this powder binder, because if the molecular weight is too low, the bonding force is not strong, and the strong bonding force cannot be obtained without using special monomers. It is easy to crush, not easy to agglomerate, and has good dispersibility after being powdered. The production cost of high molecu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J167/00C09J131/04D04H1/587
Inventor 夏涛黄欣王健李静汪辉
Owner 南京彤天广元高分子材料有限公司
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