즐겨찾기
한국세라텍 쇼핑몰에 없는 품목을 요청해주세요.
 
 

시편 전처리 관련 용품





[PACE TECHNOLOGIES] CASTABLE RESINS - EPOXIES

상품가격  
부가세 부가세 별도
공급원 PACE TECHNOLOGIES
제조국 USA
재고 전화문의
배송비 기본배송료 3,500원
(배송방법, 수량에 따라 배송비가 달라질 수 있습니다.)
제품구성
Cat. No. EP-3000-32P, EH-3000-08P, EPF-3000-32, EHF-3000-08, ULTRA-3000-32, ULTRA-3000-128, ULTRA-3000-5G, ULTRA-3000H-08, ULTRA-3000H-32, ULTRA-3000H-128, ED-300

* 상품가격 및 재고 문의 : https://hankookceratec.co.kr/html/5_1.php 

[Order Information]


* Standard Epoxy (믹싱 무게비 R 11 : H2)

EP-3000-32P  EPOCAST Epoxy Plus Resin (1Liter)

EH-3000-08P   : EPOCAST Epoxy Plus Hardener (250ml)

 

 

* Quick Mount Epoxy (믹싱 무게비 R 10 : H1)

ERF-3000-32   : QUICKMOUNT 2 Fast Epoxy Resin (1Liter)

EHF-3000-08   : QUICKMOUNT 2 Fast Epoxy Hardener (250ml)

 

 

* Low Viscosity Epoxy (믹싱 무게비 R 10 : H1)

ULTRA-3000R-32  : ULTRATHIN 2 Low Viscosity Epoxy Resin (1Liter)

ULTRA-3000H-08   : ULTRATHIN 2 Low Viscosity Epoxy Hardener (250ml)

 

 

CASTABLE RESIN PROPERTIES

 

EPOXY

ACRYLIC

POLYSTER Resin

Type

Epoxy resin and hardener

Acrylic resin and powder 

Polyester resin and hardener 

peak Temperature

38~190oC

65oC

38oC

Shore D Hardness

82

80

76

Cure Time

30 minutes to 8 hours 

5-8 minutes 

6-8 hours 

Comments

Moderate hardness, low shrinkage, transparent 

Very fast cure, translucent, some shrinkage 

Transparent, water clear 

 

 

Epoxy Resins The most common and best performing castable resins are epoxy based (Figure 4-2).

Epoxy resins are typically two-part systems consisting of a resin and a catalyst (hardener).

Mixing ratio's vary from ten parts resin with one part hardener to five parts resin with one part by weight of hardener.

The advantages of mounting with epoxy resins include:  

Metallographic epoxy resin

 

 

  • Low shrinkage
  • Relatively clear
  • Relatively low exotherms
  • Excellent adhesion
  • Excellent chemical resistance
  • Good hardness
  • Relatively inexpensive     

Epoxy curing times are dependent upon a number of variables including:

  1. Volume of mounting resin (larger mounts cure faster).
  2. Thermal mass of specimen (larger specimens absorb heat and therefore require longer curing time).
  3. Specimen material properties.
  4. Initial resin temperature (higher temperatures cure faster).
  5. Ambient temperature (higher temperatures cure faster).
  6. Relative humidity and shelf life (absorption of water degrades resin and shortens shelf life).
  7. Mounting mold (plastic, phenolic rings, rubber absorb heat differently).

As a general rule, curing times can vary from 30-45 minutes for fast curing epoxies up to 24 hours for slower curing epoxies.

For metallographic epoxies to grind properly, the hardness needs to be at least a Shore D80.

Note that epoxy resins typically will continue to harden over a longer period of time (maximum hardness, Shore D90).

In some cases, the curing time and temperature may need to be controlled to compensate for the above variables.

For example, an 8-hour resin system can be cured in 30-45 minutes by preheating the resin to approximately 120°F (50°C) prior to mixing

and then curing at room temperature.

This procedure initiates the catalytic reaction sooner; however, this may also increase the maximum exotherm temperature.

TIP: Preheat the specimen to initiate the epoxy resin at the surface of the mount

and thus have the epoxy shrink towards the sample for better edge retention.

Conversely, the resin curing cycle can be slowed

or reduced by decreasing the curing temperature by forcing air over the curing mounts (fume hood or fan),

placing the mounts into a water bath, or curing in a refrigerator.

In these cases, care must be taken to not stop the reaction; however if this does occur or the resin is too soft after curing,

heating it to 100-120°F for several hours should push the reaction to completion and the mount should be hard after cooling to room temperature.

 

 

장바구니
상품
없음