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  1. #11
    Senior Member TiredFeet's Avatar
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    Nice stuff, except maybe for the weight.

    The spec sheet on the Spaceloft insulating blanket specs the weight at 9.4 lbs/ft for the blanket.

    That works out to: 3'x3'x0.20"x9.4 == 1.41 lbs/yd

    So lets see, an under quilt equal in size to the JRB Mt Washington under quilt, 77"x42" comes out to:

    77"x42"x0.20'x9.4 == 3.52 lbs

    So an under quilt from the Spaceloft blanket is 3.52 lbs as compared to the Mt Washington 3 at 22 oz (1.375 lbs) or the Mt Washington 4 at 28 oz (1.75 lbs).

    Don't think you will have many buyers.

    Now if they had the same blanket at 0.10" thickness, then it would be 1.76 lbs, 28.15 oz which is comparable to the Mt Washington 4 in weight.

    At 0.10" thickness, the R-value would be 1.03. How does that compare to other materials?
    Last edited by TiredFeet; 02-10-2010 at 11:52.

  2. #12
    Senior Member TiredFeet's Avatar
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    Quote Originally Posted by Oh-No View Post
    I have some samples from several years ago.

    It's sort of a fiberous mat infused/impregnated with
    aerogel. If you handle it, fine aerogel dust gets over
    everything and it is very drying and irritating.

    It is heavy, expensive, and has to be encapsulated in
    a cover (or something) to keep the aerogel dust from escaping.

    Other than making a sit pad or boot insert, i.e. a small item,
    I wouldn't fool with it. YMMV
    Yeah, they have a video on the Aspen Aerogel site, laminating the blanket to wall board and installing on interior walls.

    Cutting the blanket to fit the wall board wasn't too bad, but the workers were careful to wear dust masks.

    Drilling to attach to the wall seemed to produce a lot more dust, but some of that may have been from the wall board itself.

  3. #13
    Senior Member WarmSoda's Avatar
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    Quote Originally Posted by TiredFeet View Post
    Nice stuff, except maybe for the weight.

    The spec sheet on the Spaceloft insulating blanket specs the weight at 9.4 lbs/ft for the blanket.

    That works out to: 3'x3'x0.20"x9.4 == 1.41 lbs/yd

    So lets see, an under quilt equal in size to the JRB Mt Washington under quilt, 77"x42" comes out to:

    77"x42"x0.20'x9.4 == 3.52 lbs

    So an under quilt from the Spaceloft blanket is 3.52 lbs as compared to the Mt Washington 3 at 22 oz (1.375 lbs) or the Mt Washington 4 at 28 oz (1.75 lbs).

    Don't think you will have many buyers.

    Now if they had the same blanket at 0.10" thickness, then it would be 4.7 lbs/ft, which brings the under quilt to 1.76 lbs, 28.16 oz which is comparable to the Mt Washington 4 in weight.

    At 0.10" thickness, the R-value would be 1.03. How does that compare to other materials?
    Weight comparison:
    Pyrogel 2250 comes in at 2mm or 0.08". 3'x3'x0.08" = 103.68 cu.inches with a weight of 10.7 lbs/ft3 or 0.00619213 lbs/in3 which gives 10.27 ounces for a square yard (yd2). 77" by 42" comes out to 2.5 yd2. So for the same size as the MW4 at 28 ounces, we could get Pyrogel 2250 at 25.63 ounces. I think this is very comparable for weight.

    Volume comparison:
    I can't find info on MW4, but MW3 has a 8x8x9 stuff sack for 576 cubic inches. The Pyrogel with 103.68 in3/yd2 x 2.5 yd2 will give 259.2 in3. This means that it will take up roughly half the pack volume as the MW3.

    Insulation comparison:
    How well does it insulate? Well, here is a chart that lists down feathers as 0.02 k and Pyrogel is listed as around 0.1 k for temperatures between body temp (34C) and the freezing point of water (0C). I'm not sure how the k is calculated, but it looks like lower is better for this number so, down will insulate 5 times better than Pyrogel 2250. I'm not sure if that is the same volume or the same weight, but I'm guessing weight.
    Last edited by WarmSoda; 02-09-2010 at 18:01. Reason: math makes my head hurt after a while, but it sure is fun!!

  4. #14
    I think the weight issue deals with how its made and what they bond it too. The actual aerogel has almost no weight, it depends on what they bond it to. One article I found said that micalangelo's David would only weigh something like 4 pounds if it was made from aerogel. That's would make for a pretty light uq if they figure out how to make it without the heavy outer coatings to seal the aerogel.

  5. #15
    Senior Member NCPatrick's Avatar
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    Quote Originally Posted by Cannibal View Post
    OK, who wrote this article? A teenager from the 80s?
    I keep expecting Robocop to walk into the video...


    "Civilization is the limitless multiplication of unnecessary necessities."
    - Mark Twain
    I go to nature to be soothed and healed, and to have my senses put in order.
    - John Burroughs

  6. #16
    Senior Member WarmSoda's Avatar
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    Quote Originally Posted by headchange4u View Post
    I contacted the company to get more info and possibly a sample.
    I'd like to see the thermal conductivity properties.
    Is it water proof? water resistant? durable to wear and tear? have a melting point? how brittle or flexible is it? what is the tensile strength?

  7. #17
    Senior Member NCPatrick's Avatar
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    Quote Originally Posted by WarmSoda View Post
    I'd like to see the thermal conductivity properties.
    Is it water proof? water resistant? durable to wear and tear? have a melting point? how brittle or flexible is it? what is the tensile strength?
    What does it taste like? Oh uhmmm sorry. <slinks off>


    "Civilization is the limitless multiplication of unnecessary necessities."
    - Mark Twain
    I go to nature to be soothed and healed, and to have my senses put in order.
    - John Burroughs

  8. #18
    Senior Member BurningCedar's Avatar
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    Pacific Outdoor has been making Aerogel sleeping pads for a year or two now. I don't have one, but earlier reports I read reported them to be expensive and heavy, but they did have a great volume-to-warmth ratio.

    It sounds like some of the later innovations may address both the cost and weight issues. That would be way cool! (Is "cool" too much of an 80's term?).

    So who will be the first to try an Aerogel underquilt?
    David

    The road goes ever on and on Down from the door where it began. Now far ahead the Road has gone, And I must follow, if I can, Pursuing it with weary feet, Until it joins some larger way, Where many paths and errands meet. And whither then? I cannot say.
    -Frodo Baggins, The Fellowship of the Ring

  9. #19
    Senior Member WarmSoda's Avatar
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    Quote Originally Posted by NCPatrick View Post
    What does it taste like? Oh uhmmm sorry. <slinks off>
    I thought that was pretty funny.

    I did find this interesting reading. Its a study of an improved sleeping bag for the military using aerogels from 2007.

  10. #20
    Senior Member ikemouser's Avatar
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    Quote Originally Posted by WarmSoda View Post
    I thought that was pretty funny.

    I did find this interesting reading. Its a study of an improved sleeping bag for the military using aerogels from 2007.
    nice avatar, i love sp.

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