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Anti-impact epoxy structural rubber and preparation method thereof

An epoxy structural adhesive and impact-resistant technology, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of poor aging resistance, low impact resistance and compression strength, poor toughness, etc., and achieve thermal stability The effects of non-reduced resistance, good compatibility, and improved impact strength and compressive strength

Inactive Publication Date: 2010-06-09
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention mainly solves the problems of poor toughness, low impact and compression strength, and poor aging resistance of existing epoxy resin cured products.

Method used

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  • Anti-impact epoxy structural rubber and preparation method thereof
  • Anti-impact epoxy structural rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Embodiment 1: Taking nanometer rubber particle modified bisphenol A epoxy resin E-51 as example:

[0043] Pretreatment of nano-rubber particles: Weigh 200g of epoxy resin active diluent 1.6 hexanediol diglycidyl ether, 275g of E-51 bisphenol A epoxy resin in a 2000ML glass beaker, add 25g of BYK-P104S wetting and dispersing agent , stirred with a stirrer for 10 minutes; Weighed 500g of superfine fully vulcanized carboxylated nitrile rubber powder and slowly added it to the beaker while stirring, stirred for 1 hour, and left standstill for 24 hours to obtain pretreated nano-rubber particles for subsequent use (total amount 1Kg) ;

[0044] Nano-rubber particle modified E-51: Weigh 389g of E-51 epoxy resin, place it in a 1.5L double planetary power mixing kettle with a high-speed emulsifier, heat the resin to 90°C, and weigh the above-mentioned pretreated nano-rubber particles Add 150g of 150g to the mixing kettle in small amounts while stirring at a speed of 600 rpm; turn...

Embodiment 2

[0050] Embodiment 2: Taking nanometer rubber particle modified bisphenol A epoxy resin E-51 as example:

[0051] Pretreatment of nano-rubber particles: Weigh 200g of epoxy active diluent butyl glycidyl ether BGE, 283.3g of E-51 bisphenol A epoxy resin, put them in a 2000ML glass beaker; add 16.7g of BYK-161 wetting and dispersing agent , stirred with a mixer for 10 minutes; Weighed 500 g of superfine fully vulcanized carboxylated nitrile rubber powder and slowly added it to the beaker while stirring, stirred for 1 hour, and left to stand for 24 hours to obtain pretreated nano-rubber particles for subsequent use;

[0052] Nano-rubber particle modified E-51: Weigh 466g of E-51 epoxy resin, place it in a 1.5L dual planetary power mixing kettle with a high-speed emulsifier, heat the resin to 90°C, and weigh the above-mentioned pretreated nano-rubber particles 120g was added to the mixing tank several times while stirring at a speed of 600 rpm; the high-speed emulsifier was turned ...

Embodiment 3

[0058] Embodiment 3, taking nanometer rubber particle modified bisphenol F epoxy resin BFE170 as example:

[0059] Pretreatment of nano-rubber particles: Weigh 200g of epoxy resin active diluent 1.6 hexanediol diglycidyl ether, 275g of bisphenol F epoxy resin BFE170 in a 2000ML glass beaker, add 25g of BYK-P104S wetting and dispersing agent, and use Mixer stirred for 10 minutes; Weighed 500g of nano-rubber particle powder, slowly added to the beaker while stirring, stirred for 1 hour, and left standstill for 24 hours to obtain pretreated nano-rubber particle, which was set aside (total amount 1Kg);

[0060] Bisphenol F epoxy resin BFE170 modified by nano-rubber particles: Weigh 295g of BFE170 epoxy resin, place it in a 1.5L double planetary power mixing kettle with a high-speed emulsifier, heat the resin to 90°C, and weigh the above-mentioned pretreated nano Add 200g of rubber particles to the mixing kettle in small amounts and multiple times while stirring at a speed of 600 r...

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Abstract

The invention discloses the composition of a bi-component anti-impact epoxy structural rubber adhesive which is cured at room temperature and a preparation method thereof. The anti-impact epoxy structural rubber adhesive is prepared from epoxy resin component and curing agent component based on the weight proportion of 100:45-55. The preparation process comprises pre-treatment of nanometer rubberparticle by a wetting dispersant, modification of epoxy resin of bisphenol A (or bisphenol B) by using nanometer rubber particle, preparation of a component A, preparation of a component B and use ofthe adhesive. The structural rubber has higher anti-impact, anti-vibration and ageing-resistant performances as well as good thermal stability, and is used for adhering metal section bar of an aluminum alloy car body with good effect.

Description

Technical field: [0001] The invention belongs to the technical field of adhesives, in particular to a two-component epoxy resin structural adhesive with good impact resistance, compression resistance, aging resistance and thermal stability and a preparation method thereof. technical background: [0002] Epoxy resin adhesive has excellent bonding performance, thermal stability, good corrosion resistance and high mechanical strength. However, the general cured epoxy glue is brittle, has low impact resistance and poor aging resistance. Usually, acrylic acid, polyurethane, and carboxyl-terminated liquid nitrile rubber are used to modify epoxy resins, which can better improve the toughness of cured epoxy resins. However, these toughening modification methods either reduce the glass transition temperature of the cured product due to the introduction of thermoplastic segments; Decrease; it is difficult to achieve the purpose of improving the toughness of the cured product, improv...

Claims

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Application Information

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IPC IPC(8): C09J163/02C09J11/08
Inventor 刘铁钢王建斌解海华
Owner YANTAI DARBOND TECH
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